[PATCH 00/13] Add musl to OE-Core

[PATCH 00/13] Add musl to OE-Core

[Khem Raj]

This is a mimimal set of changes brought in from meta-musl
to OE-Core, with this set one can build core-image-minimal using musl
by setting

TCLIBC=musl

for all supported architectures, eventually we will bring
more changes to other packages which will enable more complex
image builds and eventually world.

v2: Address review feedback

Khem Raj (13):
  gcc: Add support for building musl configuration
  autoconf: Add musl support
  gdb: Fix build with musl
  mtd-utils: Backport and create patches to support musl
  squashfs-tools: Define FNM_EXTMATCH if not defined
  mtools: Use proper glibc override to add glibc packages to
    recommendations
  musl: Add recipe
  sysvinit: Fix build with musl
  gettext: Delete libintl.h and charset.alias
  busybox: Add config for musl
  openssl: Add musl configuration support
  libpam: Fix build with musl
  attr: Add patch to account for use of internal glibc header

 meta/recipes-connectivity/openssl/openssl.inc      |   4 +-
 .../openssl/openssl/configure-musl-target.patch    |  27 +++
 .../recipes-connectivity/openssl/openssl_1.0.2d.bb |   1 +
 ...user-use-POSIX-getpwent-instead-of-getpwe.patch |  71 ++++++
 meta/recipes-core/busybox/busybox/musl.cfg         |  12 +
 meta/recipes-core/busybox/busybox_1.24.1.bb        |   2 +
 meta/recipes-core/gettext/gettext_0.16.1.bb        |   5 +
 meta/recipes-core/gettext/gettext_0.19.4.bb        |   4 +
 meta/recipes-core/musl/musl.inc                    |  26 ++
 meta/recipes-core/musl/musl_git.bb                 |  58 +++++
 meta/recipes-core/sysvinit/sysvinit/realpath.patch |  78 ++++++
 meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb     |   1 +
 .../autoconf/autoconf/add_musl_config.patch        |  26 ++
 meta/recipes-devtools/autoconf/autoconf_2.69.bb    |   1 +
 meta/recipes-devtools/gcc/gcc-4.9.inc              |   4 +
 .../gcc/gcc-4.9/0067-gcc-musl-support.patch        | 267 +++++++++++++++++++++
 .../gcc/gcc-4.9/0068-musl-dynamic-linker.patch     | 205 ++++++++++++++++
 .../gcc/gcc-4.9/0069-musl-no-fixincludes.patch     |  21 ++
 .../gcc/gcc-4.9/0070-libstdc-musl.patch            |  32 +++
 meta/recipes-devtools/gcc/gcc-5.2.inc              |   4 +
 .../gcc/gcc-5.2/0043-libstdc-musl.patch            |  32 +++
 .../gcc/gcc-5.2/0044-gcc-musl-support.patch        | 267 +++++++++++++++++++++
 .../gcc/gcc-5.2/0045-musl-dynamic-linker.patch     | 198 +++++++++++++++
 .../gcc/gcc-5.2/0046-musl-no-fixincludes.patch     |  22 ++
 meta/recipes-devtools/gdb/gdb.inc                  |   1 +
 ...0001-Use-exported-definitions-of-SIGRTMIN.patch |  54 +++++
 .../mtd/mtd-utils/0001-Fix-build-with-musl.patch   |  53 ++++
 ...ibfec-use-standard-C-type-instead-of-u_lo.patch |  56 +++++
 .../mtd/mtd-utils/010-fix-rpmatch.patch            |  24 ++
 meta/recipes-devtools/mtd/mtd-utils_git.bb         |   4 +
 meta/recipes-devtools/mtools/mtools_4.0.18.bb      |   4 +-
 .../squashfs-tools/squashfs-tools/fix-compat.patch |  63 +++++
 .../squashfs-tools/squashfs-tools_git.bb           |   1 +
 ...upport-for-defining-missing-funcitonality.patch |  68 ++++++
 .../pam/libpam/include_paths_header.patch          |  59 +++++
 meta/recipes-extended/pam/libpam_1.2.1.bb          |   5 +-
 meta/recipes-support/attr/attr_2.4.47.bb           |   4 +-
 .../attr/files/dont-use-decl-macros.patch          |  56 +++++
 38 files changed, 1815 insertions(+), 5 deletions(-)
 create mode 100644 meta/recipes-connectivity/openssl/openssl/configure-musl-target.patch
 create mode 100644 meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch
 create mode 100644 meta/recipes-core/busybox/busybox/musl.cfg
 create mode 100644 meta/recipes-core/musl/musl.inc
 create mode 100644 meta/recipes-core/musl/musl_git.bb
 create mode 100644 meta/recipes-core/sysvinit/sysvinit/realpath.patch
 create mode 100644 meta/recipes-devtools/autoconf/autoconf/add_musl_config.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0070-libstdc-musl.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch
 create mode 100644 meta/recipes-devtools/gdb/gdb/0001-Use-exported-definitions-of-SIGRTMIN.patch
 create mode 100644 meta/recipes-devtools/mtd/mtd-utils/0001-Fix-build-with-musl.patch
 create mode 100644 meta/recipes-devtools/mtd/mtd-utils/0001-mtd-utils-libfec-use-standard-C-type-instead-of-u_lo.patch
 create mode 100644 meta/recipes-devtools/mtd/mtd-utils/010-fix-rpmatch.patch
 create mode 100644 meta/recipes-devtools/squashfs-tools/squashfs-tools/fix-compat.patch
 create mode 100644 meta/recipes-extended/pam/libpam/0001-Add-support-for-defining-missing-funcitonality.patch
 create mode 100644 meta/recipes-extended/pam/libpam/include_paths_header.patch
 create mode 100644 meta/recipes-support/attr/files/dont-use-decl-macros.patch

-- 
2.6.3

[PATCH 01/13] gcc: Add support for building musl configuration

[Khem Raj]

Most of these patches are already in gcc 6.0/master but we still need them for
older gcc, they have been tested in meta-musl for quite some time

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-devtools/gcc/gcc-4.9.inc              |   4 +
 .../gcc/gcc-4.9/0067-gcc-musl-support.patch        | 267 +++++++++++++++++++++
 .../gcc/gcc-4.9/0068-musl-dynamic-linker.patch     | 205 ++++++++++++++++
 .../gcc/gcc-4.9/0069-musl-no-fixincludes.patch     |  21 ++
 .../gcc/gcc-4.9/0070-libstdc-musl.patch            |  32 +++
 meta/recipes-devtools/gcc/gcc-5.2.inc              |   4 +
 .../gcc/gcc-5.2/0043-libstdc-musl.patch            |  32 +++
 .../gcc/gcc-5.2/0044-gcc-musl-support.patch        | 267 +++++++++++++++++++++
 .../gcc/gcc-5.2/0045-musl-dynamic-linker.patch     | 198 +++++++++++++++
 .../gcc/gcc-5.2/0046-musl-no-fixincludes.patch     |  22 ++
 10 files changed, 1052 insertions(+)
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0070-libstdc-musl.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch

diff --git a/meta/recipes-devtools/gcc/gcc-4.9.inc b/meta/recipes-devtools/gcc/gcc-4.9.inc
index 6ac3685..a602cd1 100644
--- a/meta/recipes-devtools/gcc/gcc-4.9.inc
+++ b/meta/recipes-devtools/gcc/gcc-4.9.inc
@@ -82,6 +82,10 @@ SRC_URI = "\
     file://0064-handle-target-sysroot-multilib.patch \
     file://0065-gcc-483-universal-initializer-no-warning.patch \
     file://0066-cxxflags-for-build.patch \
+    file://0067-gcc-musl-support.patch \
+    file://0068-musl-dynamic-linker.patch \
+    file://0069-musl-no-fixincludes.patch \
+    file://0070-libstdc-musl.patch \
 "
 SRC_URI[md5sum] = "6f831b4d251872736e8e9cc09746f327"
 SRC_URI[sha256sum] = "2332b2a5a321b57508b9031354a8503af6fdfb868b8c1748d33028d100a8b67e"
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch b/meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch
new file mode 100644
index 0000000..9a0b5ad
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch
@@ -0,0 +1,267 @@
+# HG changeset patch
+# Parent e5b4564f249f8634194bdabef4b3057d0e54ee97
+Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
+Upstream-Status: backport [partial]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+
+Index: gcc-4.9.0/gcc/config.gcc
+===================================================================
+--- gcc-4.9.0.orig/gcc/config.gcc	2014-04-22 22:44:17.153567150 -0700
++++ gcc-4.9.0/gcc/config.gcc	2014-04-23 23:54:31.427357051 -0700
+@@ -594,7 +594,7 @@
+ esac
+ 
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+ 
+ # 32-bit x86 processors supported by --with-arch=.  Each processor
+ # MUST be separated by exactly one space.
+@@ -719,6 +719,9 @@
+     *-*-*uclibc*)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+       ;;
++    *-*-*musl*)
++      tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++      ;;
+     *)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+       ;;
+@@ -2328,6 +2331,11 @@
+ 	    powerpc*-*-linux*paired*)
+ 		tm_file="${tm_file} rs6000/750cl.h" ;;
+ 	esac
++        case ${target} in
++	    *-linux*-musl*)
++		enable_secureplt=yes ;;
++	esac
++
+ 	if test x${enable_secureplt} = xyes; then
+ 		tm_file="rs6000/secureplt.h ${tm_file}"
+ 	fi
+Index: gcc-4.9.0/gcc/config/linux.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/linux.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/linux.h	2014-04-24 00:11:29.034028895 -0700
+@@ -32,10 +32,12 @@
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS()			\
+@@ -53,18 +55,21 @@
+    uClibc or Bionic is the default C library and whether
+    -muclibc or -mglibc or -mbionic has been passed to change the default.  */
+ 
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3)	\
+-  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4)	\
++  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+ 
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -84,16 +89,16 @@
+ 
+ #define GNU_USER_DYNAMIC_LINKER						\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,	\
+-			 BIONIC_DYNAMIC_LINKER)
++			 BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+-			 BIONIC_DYNAMIC_LINKER32)
++			 BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+-			 BIONIC_DYNAMIC_LINKER64)
++			 BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+-			 BIONIC_DYNAMIC_LINKERX32)
++			 BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+ 
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+@@ -127,3 +132,74 @@
+ # define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function
+ 
+ #endif
++
++/* musl avoids problematic includes by rearranging the include directories.
++ * Unfortunately, this is mostly duplicated from cppdefault.c */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP			\
++    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },		\
++    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },		\
++    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS			\
++    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL			\
++    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 },	\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS				\
++  {							\
++    INCLUDE_DEFAULTS_MUSL_GPP				\
++    INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    INCLUDE_DEFAULTS_MUSL_CROSS				\
++    INCLUDE_DEFAULTS_MUSL_TOOL				\
++    INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 },		\
++    { 0, 0, 0, 0, 0, 0 }				\
++  }
++#endif
+Index: gcc-4.9.0/gcc/config/linux.opt
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/linux.opt	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/linux.opt	2014-04-22 22:44:17.280233817 -0700
+@@ -30,3 +30,7 @@
+ muclibc
+ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Use musl C library
+Index: gcc-4.9.0/gcc/ginclude/stddef.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/ginclude/stddef.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/ginclude/stddef.h	2014-04-22 22:44:17.280233817 -0700
+@@ -181,6 +181,7 @@
+ #ifndef _GCC_SIZE_T
+ #ifndef _SIZET_
+ #ifndef __size_t
++#ifndef __DEFINED_size_t /* musl */
+ #define __size_t__	/* BeOS */
+ #define __SIZE_T__	/* Cray Unicos/Mk */
+ #define _SIZE_T
+@@ -197,6 +198,7 @@
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
+   || defined(__FreeBSD_kernel__)
+ /* __size_t is a typedef on FreeBSD 5, must not trash it. */
+@@ -214,6 +216,7 @@
+ typedef long ssize_t;
+ #endif /* __BEOS__ */
+ #endif /* !(defined (__GNUG__) && defined (size_t)) */
++#endif /* __DEFINED_size_t */
+ #endif /* __size_t */
+ #endif /* _SIZET_ */
+ #endif /* _GCC_SIZE_T */
+Index: gcc-4.9.0/gcc/config/rs6000/secureplt.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/rs6000/secureplt.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/rs6000/secureplt.h	2014-04-23 23:55:15.114024175 -0700
+@@ -18,3 +18,4 @@
+ <http://www.gnu.org/licenses/>.  */
+ 
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+Index: gcc-4.9.0/gcc/config/rs6000/sysv4.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/rs6000/sysv4.h	2014-04-23 23:52:13.854023015 -0700
++++ gcc-4.9.0/gcc/config/rs6000/sysv4.h	2014-04-24 00:10:55.550695334 -0700
+@@ -538,6 +538,10 @@
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
+ 
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
++
+ /* Pass -G xxx to the compiler.  */
+ #define	CC1_SPEC "%{G*} %(cc1_cpu)" \
+ "%{meabi: %{!mcall-*: -mcall-sysv }} \
+@@ -585,7 +589,8 @@
+ 
+ /* Override the default target of the linker.  */
+ #define	LINK_TARGET_SPEC \
+-  ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
++  ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
++  "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+ 
+ /* Any specific OS flags.  */
+ #define LINK_OS_SPEC "\
+@@ -894,6 +899,7 @@
+   { "link_os_openbsd",		LINK_OS_OPENBSD_SPEC },			\
+   { "link_os_default",		LINK_OS_DEFAULT_SPEC },			\
+   { "cc1_secure_plt_default",	CC1_SECURE_PLT_DEFAULT_SPEC },		\
++  { "link_secure_plt_default",	LINK_SECURE_PLT_DEFAULT_SPEC },		\
+   { "cpp_os_ads",		CPP_OS_ADS_SPEC },			\
+   { "cpp_os_yellowknife",	CPP_OS_YELLOWKNIFE_SPEC },		\
+   { "cpp_os_mvme",		CPP_OS_MVME_SPEC },			\
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch b/meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch
new file mode 100644
index 0000000..605ac66
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch
@@ -0,0 +1,205 @@
+# HG changeset patch
+# Parent 6738fd6f6fcc2a72f2ba527bda3325642af26885
+Support for arm-linux-musl.
+Upstream-Status: Backport [partial]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+
+Index: gcc-4.9.2/gcc/config/arm/linux-eabi.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/arm/linux-eabi.h
++++ gcc-4.9.2/gcc/config/arm/linux-eabi.h
+@@ -81,6 +81,23 @@
+ #undef TARGET_FIX_V4BX_SPEC
+ #define TARGET_FIX_V4BX_SPEC "%{mcpu=arm8|mcpu=arm810|mcpu=strongarm*|march=armv4: --fix-v4bx}"
+ 
++/* For ARM musl currently supports four dynamic linkers:
++   - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
++   - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
++   - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
++   - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
++   musl does not support the legacy OABI mode.
++   All the dynamic linkers live in /lib.
++   We default to soft-float, EL. */
++#undef  MUSL_DYNAMIC_LINKER
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
++#endif
++#define MUSL_DYNAMIC_LINKER \
++  SYSTEMLIBS_DIR "ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
+Index: gcc-4.9.2/libitm/config/arm/hwcap.cc
+===================================================================
+--- gcc-4.9.2.orig/libitm/config/arm/hwcap.cc
++++ gcc-4.9.2/libitm/config/arm/hwcap.cc
+@@ -40,7 +40,11 @@ int GTM_hwcap HIDDEN = 0
+ 
+ #ifdef __linux__
+ #include <unistd.h>
++#ifdef __GLIBC__
+ #include <sys/fcntl.h>
++#else
++#include <fcntl.h>
++#endif
+ #include <elf.h>
+ 
+ static void __attribute__((constructor))
+Index: gcc-4.9.2/gcc/config/i386/linux.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/i386/linux.h
++++ gcc-4.9.2/gcc/config/i386/linux.h
+@@ -21,3 +21,4 @@ along with GCC; see the file COPYING3.
+ 
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-musl-i386.so.1"
+Index: gcc-4.9.2/gcc/config/i386/linux64.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/i386/linux64.h
++++ gcc-4.9.2/gcc/config/i386/linux64.h
+@@ -30,3 +30,8 @@ see the files COPYING3 and COPYING.RUNTI
+ #define GLIBC_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 SYSTEMLIBS_DIR "ld-linux-x32.so.2"
++
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 SYSTEMLIBS_DIR "ld-musl-x32.so.1"
++
+Index: gcc-4.9.2/gcc/config/mips/linux.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/mips/linux.h
++++ gcc-4.9.2/gcc/config/mips/linux.h
+@@ -23,3 +23,6 @@ along with GCC; see the file COPYING3.
+ #undef UCLIBC_DYNAMIC_LINKER
+ #define UCLIBC_DYNAMIC_LINKER \
+   "%{mnan=2008:" SYSTEMLIBS_DIR "ld-uClibc-mipsn8.so.0;:" SYSTEMLIBS_DIR "ld-uClibc.so.0}"
++
++#define MUSL_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++
+Index: gcc-4.9.2/gcc/config/mips/linux64.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/mips/linux64.h
++++ gcc-4.9.2/gcc/config/mips/linux64.h
+@@ -39,6 +39,11 @@ along with GCC; see the file COPYING3.
+   "%{mnan=2008:" SYSTEMLIBS_DIR "ld-uClibc-mipsn8.so.0;:" SYSTEMLIBS_DIR "ld-uClibc.so.0}"
+ 
+ #define BIONIC_DYNAMIC_LINKERN32 "/system/bin/linker32"
++
++#define MUSL_DYNAMIC_LINKERN32 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++
+ #define GNU_USER_DYNAMIC_LINKERN32 \
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32, \
+-			 BIONIC_DYNAMIC_LINKERN32)
++			 BIONIC_DYNAMIC_LINKERN32, MUSL_DYNAMIC_LINKERN32)
+Index: gcc-4.9.2/gcc/config/rs6000/linux64.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/rs6000/linux64.h
++++ gcc-4.9.2/gcc/config/rs6000/linux64.h
+@@ -375,17 +375,22 @@ extern int dot_symbols;
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-powerpc.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-powerpc64.so.1"
++
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ 
+ #undef  DEFAULT_ASM_ENDIAN
+ #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+Index: gcc-4.9.2/gcc/config/rs6000/sysv4.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/rs6000/sysv4.h
++++ gcc-4.9.2/gcc/config/rs6000/sysv4.h
+@@ -768,15 +768,19 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ 
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
++
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ 
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+   %{rdynamic:-export-dynamic} \
+Index: gcc-4.9.2/libitm/config/linux/x86/tls.h
+===================================================================
+--- gcc-4.9.2.orig/libitm/config/linux/x86/tls.h
++++ gcc-4.9.2/libitm/config/linux/x86/tls.h
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+    GLIBC has reserved words 10 through 13 for TM.  */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+ 
+ #include "config/generic/tls.h"
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+ 
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@ static inline void set_abi_disp(struct a
+ 
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+ 
+ #endif // LIBITM_X86_TLS_H
+Index: gcc-4.9.2/gcc/config/aarch64/aarch64-linux.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/aarch64/aarch64-linux.h
++++ gcc-4.9.2/gcc/config/aarch64/aarch64-linux.h
+@@ -25,6 +25,8 @@
+ 
+ #define CPP_SPEC "%{pthread:-D_REENTRANT}"
+ 
++#define MUSL_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-musl-aarch64.so.1"
++
+ #define LINUX_TARGET_LINK_SPEC  "%{h*}		\
+    %{static:-Bstatic}				\
+    %{shared:-shared}				\
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch b/meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch
new file mode 100644
index 0000000..e2b18a4
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch
@@ -0,0 +1,21 @@
+# HG changeset patch
+# Parent 600a8a422ccaf5627ad1f5a138e7398df2b9e9d8
+Get rid of ever-broken fixincludes on musl.
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+
+Index: gcc-4.9-20140316/fixincludes/mkfixinc.sh
+===================================================================
+--- gcc-4.9-20140316.orig/fixincludes/mkfixinc.sh
++++ gcc-4.9-20140316/fixincludes/mkfixinc.sh
+@@ -19,7 +19,8 @@ case $machine in
+     powerpc-*-eabi*    | \
+     powerpc-*-rtems*   | \
+     powerpcle-*-eabisim* | \
+-    powerpcle-*-eabi* )
++    powerpcle-*-eabi* | \
++    *-musl* )
+ 	#  IF there is no include fixing,
+ 	#  THEN create a no-op fixer and exit
+ 	(echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0070-libstdc-musl.patch b/meta/recipes-devtools/gcc/gcc-4.9/0070-libstdc-musl.patch
new file mode 100644
index 0000000..048e481
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0070-libstdc-musl.patch
@@ -0,0 +1,32 @@
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: gcc-4.9-20140316/libstdc++-v3/configure.host
+===================================================================
+--- gcc-4.9-20140316.orig/libstdc++-v3/configure.host	2014-03-26 01:12:19.466008193 -0700
++++ gcc-4.9-20140316/libstdc++-v3/configure.host	2014-03-26 01:43:48.222684357 -0700
+@@ -264,14 +264,24 @@
+     os_include_dir="os/bsd/freebsd"
+     ;;
+   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++    # check for musl by target
++    case "${host_os}" in
++      *-musl*)
++        os_include_dir="os/generic"
++        ;;
++      *)
+     if [ "$uclibc" = "yes" ]; then
+       os_include_dir="os/uclibc"
+     elif [ "$bionic" = "yes" ]; then
+       os_include_dir="os/bionic"
++    elif [ "$musl" = "yes" ]; then
++      os_include_dir="os/generic"
+     else
+       os_include_dir="os/gnu-linux"
+     fi
+     ;;
++    esac
++    ;;
+   hpux*)
+     os_include_dir="os/hpux"
+     ;;
diff --git a/meta/recipes-devtools/gcc/gcc-5.2.inc b/meta/recipes-devtools/gcc/gcc-5.2.inc
index a6b385a..af9d887 100644
--- a/meta/recipes-devtools/gcc/gcc-5.2.inc
+++ b/meta/recipes-devtools/gcc/gcc-5.2.inc
@@ -74,6 +74,10 @@ SRC_URI = "\
            file://0040-nativesdk-gcc-support.patch \
            file://0041-handle-target-sysroot-multilib.patch \
            file://0042-cxxflags-for-build.patch \
+           file://0043-libstdc-musl.patch \
+           file://0044-gcc-musl-support.patch \
+           file://0045-musl-dynamic-linker.patch \
+           file://0046-musl-no-fixincludes.patch \
           "
 
 BACKPORTS = ""
diff --git a/meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch b/meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch
new file mode 100644
index 0000000..048e481
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch
@@ -0,0 +1,32 @@
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: gcc-4.9-20140316/libstdc++-v3/configure.host
+===================================================================
+--- gcc-4.9-20140316.orig/libstdc++-v3/configure.host	2014-03-26 01:12:19.466008193 -0700
++++ gcc-4.9-20140316/libstdc++-v3/configure.host	2014-03-26 01:43:48.222684357 -0700
+@@ -264,14 +264,24 @@
+     os_include_dir="os/bsd/freebsd"
+     ;;
+   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++    # check for musl by target
++    case "${host_os}" in
++      *-musl*)
++        os_include_dir="os/generic"
++        ;;
++      *)
+     if [ "$uclibc" = "yes" ]; then
+       os_include_dir="os/uclibc"
+     elif [ "$bionic" = "yes" ]; then
+       os_include_dir="os/bionic"
++    elif [ "$musl" = "yes" ]; then
++      os_include_dir="os/generic"
+     else
+       os_include_dir="os/gnu-linux"
+     fi
+     ;;
++    esac
++    ;;
+   hpux*)
+     os_include_dir="os/hpux"
+     ;;
diff --git a/meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch b/meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch
new file mode 100644
index 0000000..4d1ab87
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch
@@ -0,0 +1,267 @@
+# HG changeset patch
+# Parent e5b4564f249f8634194bdabef4b3057d0e54ee97
+Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
+
+Upstream-Status: Backport [partial]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: gcc-4.9.0/gcc/config.gcc
+===================================================================
+--- gcc-4.9.0.orig/gcc/config.gcc	2014-04-22 22:44:17.153567150 -0700
++++ gcc-4.9.0/gcc/config.gcc	2014-04-23 23:54:31.427357051 -0700
+@@ -594,7 +594,7 @@
+ esac
+ 
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+ 
+ # 32-bit x86 processors supported by --with-arch=.  Each processor
+ # MUST be separated by exactly one space.
+@@ -719,6 +719,9 @@
+     *-*-*uclibc*)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+       ;;
++    *-*-*musl*)
++      tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++      ;;
+     *)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+       ;;
+@@ -2328,6 +2331,11 @@
+ 	    powerpc*-*-linux*paired*)
+ 		tm_file="${tm_file} rs6000/750cl.h" ;;
+ 	esac
++        case ${target} in
++	    *-linux*-musl*)
++		enable_secureplt=yes ;;
++	esac
++
+ 	if test x${enable_secureplt} = xyes; then
+ 		tm_file="rs6000/secureplt.h ${tm_file}"
+ 	fi
+Index: gcc-4.9.0/gcc/config/linux.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/linux.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/linux.h	2014-04-24 00:11:29.034028895 -0700
+@@ -32,10 +32,12 @@
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS()			\
+@@ -53,18 +55,21 @@
+    uClibc or Bionic is the default C library and whether
+    -muclibc or -mglibc or -mbionic has been passed to change the default.  */
+ 
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3)	\
+-  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4)	\
++  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+ 
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -84,16 +89,16 @@
+ 
+ #define GNU_USER_DYNAMIC_LINKER						\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,	\
+-			 BIONIC_DYNAMIC_LINKER)
++			 BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+-			 BIONIC_DYNAMIC_LINKER32)
++			 BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+-			 BIONIC_DYNAMIC_LINKER64)
++			 BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+-			 BIONIC_DYNAMIC_LINKERX32)
++			 BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+ 
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+@@ -127,3 +132,74 @@
+ # define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function
+ 
+ #endif
++
++/* musl avoids problematic includes by rearranging the include directories.
++ * Unfortunately, this is mostly duplicated from cppdefault.c */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP			\
++    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },		\
++    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },		\
++    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS			\
++    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL			\
++    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 },	\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS				\
++  {							\
++    INCLUDE_DEFAULTS_MUSL_GPP				\
++    INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    INCLUDE_DEFAULTS_MUSL_CROSS				\
++    INCLUDE_DEFAULTS_MUSL_TOOL				\
++    INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 },		\
++    { 0, 0, 0, 0, 0, 0 }				\
++  }
++#endif
+Index: gcc-4.9.0/gcc/config/linux.opt
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/linux.opt	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/linux.opt	2014-04-22 22:44:17.280233817 -0700
+@@ -30,3 +30,7 @@
+ muclibc
+ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Use musl C library
+Index: gcc-4.9.0/gcc/ginclude/stddef.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/ginclude/stddef.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/ginclude/stddef.h	2014-04-22 22:44:17.280233817 -0700
+@@ -181,6 +181,7 @@
+ #ifndef _GCC_SIZE_T
+ #ifndef _SIZET_
+ #ifndef __size_t
++#ifndef __DEFINED_size_t /* musl */
+ #define __size_t__	/* BeOS */
+ #define __SIZE_T__	/* Cray Unicos/Mk */
+ #define _SIZE_T
+@@ -197,6 +198,7 @@
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
+   || defined(__FreeBSD_kernel__)
+ /* __size_t is a typedef on FreeBSD 5, must not trash it. */
+@@ -214,6 +216,7 @@
+ typedef long ssize_t;
+ #endif /* __BEOS__ */
+ #endif /* !(defined (__GNUG__) && defined (size_t)) */
++#endif /* __DEFINED_size_t */
+ #endif /* __size_t */
+ #endif /* _SIZET_ */
+ #endif /* _GCC_SIZE_T */
+Index: gcc-4.9.0/gcc/config/rs6000/secureplt.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/rs6000/secureplt.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/rs6000/secureplt.h	2014-04-23 23:55:15.114024175 -0700
+@@ -18,3 +18,4 @@
+ <http://www.gnu.org/licenses/>.  */
+ 
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+Index: gcc-4.9.0/gcc/config/rs6000/sysv4.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/rs6000/sysv4.h	2014-04-23 23:52:13.854023015 -0700
++++ gcc-4.9.0/gcc/config/rs6000/sysv4.h	2014-04-24 00:10:55.550695334 -0700
+@@ -538,6 +538,10 @@
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
+ 
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
++
+ /* Pass -G xxx to the compiler.  */
+ #define	CC1_SPEC "%{G*} %(cc1_cpu)" \
+ "%{meabi: %{!mcall-*: -mcall-sysv }} \
+@@ -585,7 +589,8 @@
+ 
+ /* Override the default target of the linker.  */
+ #define	LINK_TARGET_SPEC \
+-  ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
++  ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
++  "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+ 
+ /* Any specific OS flags.  */
+ #define LINK_OS_SPEC "\
+@@ -894,6 +899,7 @@
+   { "link_os_openbsd",		LINK_OS_OPENBSD_SPEC },			\
+   { "link_os_default",		LINK_OS_DEFAULT_SPEC },			\
+   { "cc1_secure_plt_default",	CC1_SECURE_PLT_DEFAULT_SPEC },		\
++  { "link_secure_plt_default",	LINK_SECURE_PLT_DEFAULT_SPEC },		\
+   { "cpp_os_ads",		CPP_OS_ADS_SPEC },			\
+   { "cpp_os_yellowknife",	CPP_OS_YELLOWKNIFE_SPEC },		\
+   { "cpp_os_mvme",		CPP_OS_MVME_SPEC },			\
diff --git a/meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch b/meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch
new file mode 100644
index 0000000..3dadb95
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch
@@ -0,0 +1,198 @@
+# HG changeset patch
+# Parent 6738fd6f6fcc2a72f2ba527bda3325642af26885
+Support for arm-linux-musl.
+
+Upstream-Status: backport [partial]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+
+Index: gcc-5.1.0/gcc/config/arm/linux-eabi.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/arm/linux-eabi.h
++++ gcc-5.1.0/gcc/config/arm/linux-eabi.h
+@@ -81,6 +81,23 @@
+ #undef TARGET_FIX_V4BX_SPEC
+ #define TARGET_FIX_V4BX_SPEC "%{mcpu=arm8|mcpu=arm810|mcpu=strongarm*|march=armv4: --fix-v4bx}"
+ 
++/* For ARM musl currently supports four dynamic linkers:
++   - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
++   - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
++   - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
++   - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
++   musl does not support the legacy OABI mode.
++   All the dynamic linkers live in /lib.
++   We default to soft-float, EL. */
++#undef  MUSL_DYNAMIC_LINKER
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
++#endif
++#define MUSL_DYNAMIC_LINKER \
++  SYSTEMLIBS_DIR "ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
+Index: gcc-5.1.0/libitm/config/arm/hwcap.cc
+===================================================================
+--- gcc-5.1.0.orig/libitm/config/arm/hwcap.cc
++++ gcc-5.1.0/libitm/config/arm/hwcap.cc
+@@ -40,7 +40,11 @@ int GTM_hwcap HIDDEN = 0
+ 
+ #ifdef __linux__
+ #include <unistd.h>
++#ifdef __GLIBC__
+ #include <sys/fcntl.h>
++#else
++#include <fcntl.h>
++#endif
+ #include <elf.h>
+ 
+ static void __attribute__((constructor))
+Index: gcc-5.1.0/gcc/config/i386/linux.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/i386/linux.h
++++ gcc-5.1.0/gcc/config/i386/linux.h
+@@ -21,3 +21,4 @@ along with GCC; see the file COPYING3.
+ 
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-musl-i386.so.1"
+Index: gcc-5.1.0/gcc/config/i386/linux64.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/i386/linux64.h
++++ gcc-5.1.0/gcc/config/i386/linux64.h
+@@ -30,3 +30,8 @@ see the files COPYING3 and COPYING.RUNTI
+ #define GLIBC_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 SYSTEMLIBS_DIR "ld-linux-x32.so.2"
++
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 SYSTEMLIBS_DIR "ld-musl-x32.so.1"
++
+Index: gcc-5.1.0/gcc/config/mips/linux.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/mips/linux.h
++++ gcc-5.1.0/gcc/config/mips/linux.h
+@@ -21,6 +21,10 @@ along with GCC; see the file COPYING3.
+ #define GNU_USER_LINK_EMULATION64 "elf64%{EB:b}%{EL:l}tsmip"
+ #define GNU_USER_LINK_EMULATIONN32 "elf32%{EB:b}%{EL:l}tsmipn32"
+ 
++#define MUSL_DYNAMIC_LINKERN32 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++
+ #define GLIBC_DYNAMIC_LINKER32 \
+   "%{mnan=2008:" SYSTEMLIBS_DIR "ld-linux-mipsn8.so.1;:" SYSTEMLIBS_DIR "ld.so.1}"
+ #define GLIBC_DYNAMIC_LINKER64 \
+@@ -40,4 +44,4 @@ along with GCC; see the file COPYING3.
+ #define BIONIC_DYNAMIC_LINKERN32 "/system/bin/linker32"
+ #define GNU_USER_DYNAMIC_LINKERN32 \
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32, \
+-                         BIONIC_DYNAMIC_LINKERN32)
++                         BIONIC_DYNAMIC_LINKERN32,  MUSL_DYNAMIC_LINKERN32)
+Index: gcc-5.1.0/gcc/config/rs6000/linux64.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/rs6000/linux64.h
++++ gcc-5.1.0/gcc/config/rs6000/linux64.h
+@@ -365,17 +365,22 @@ extern int dot_symbols;
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-powerpc.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-powerpc64.so.1"
++
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ 
+ #undef  DEFAULT_ASM_ENDIAN
+ #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+Index: gcc-5.1.0/gcc/config/rs6000/sysv4.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/rs6000/sysv4.h
++++ gcc-5.1.0/gcc/config/rs6000/sysv4.h
+@@ -769,15 +769,19 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ 
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
++
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ 
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+   %{rdynamic:-export-dynamic} \
+Index: gcc-5.1.0/libitm/config/linux/x86/tls.h
+===================================================================
+--- gcc-5.1.0.orig/libitm/config/linux/x86/tls.h
++++ gcc-5.1.0/libitm/config/linux/x86/tls.h
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+    GLIBC has reserved words 10 through 13 for TM.  */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+ 
+ #include "config/generic/tls.h"
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+ 
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@ static inline void set_abi_disp(struct a
+ 
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+ 
+ #endif // LIBITM_X86_TLS_H
+Index: gcc-5.1.0/gcc/config/aarch64/aarch64-linux.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/aarch64/aarch64-linux.h
++++ gcc-5.1.0/gcc/config/aarch64/aarch64-linux.h
+@@ -22,6 +22,7 @@
+ #define GCC_AARCH64_LINUX_H
+ 
+ #define GLIBC_DYNAMIC_LINKER  SYSTEMLIBS_DIR "ld-linux-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
++#define MUSL_DYNAMIC_LINKER  SYSTEMLIBS_DIR "ld-musl-aarch64.so.1"
+ 
+ #undef  ASAN_CC1_SPEC
+ #define ASAN_CC1_SPEC "%{%:sanitize(address):-funwind-tables}"
diff --git a/meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch b/meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch
new file mode 100644
index 0000000..05fe52f
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch
@@ -0,0 +1,22 @@
+# HG changeset patch
+# Parent 600a8a422ccaf5627ad1f5a138e7398df2b9e9d8
+Get rid of ever-broken fixincludes on musl.
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+
+Index: gcc-4.9-20140316/fixincludes/mkfixinc.sh
+===================================================================
+--- gcc-4.9-20140316.orig/fixincludes/mkfixinc.sh
++++ gcc-4.9-20140316/fixincludes/mkfixinc.sh
+@@ -19,7 +19,8 @@ case $machine in
+     powerpc-*-eabi*    | \
+     powerpc-*-rtems*   | \
+     powerpcle-*-eabisim* | \
+-    powerpcle-*-eabi* )
++    powerpcle-*-eabi* | \
++    *-musl* )
+ 	#  IF there is no include fixing,
+ 	#  THEN create a no-op fixer and exit
+ 	(echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
-- 
2.6.3

[PATCH 02/13] autoconf: Add musl support

[Khem Raj]

Support musl triplets

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 .../autoconf/autoconf/add_musl_config.patch        | 26 ++++++++++++++++++++++
 meta/recipes-devtools/autoconf/autoconf_2.69.bb    |  1 +
 2 files changed, 27 insertions(+)
 create mode 100644 meta/recipes-devtools/autoconf/autoconf/add_musl_config.patch

diff --git a/meta/recipes-devtools/autoconf/autoconf/add_musl_config.patch b/meta/recipes-devtools/autoconf/autoconf/add_musl_config.patch
new file mode 100644
index 0000000..a9094d2
--- /dev/null
+++ b/meta/recipes-devtools/autoconf/autoconf/add_musl_config.patch
@@ -0,0 +1,26 @@
+backport http://git.savannah.gnu.org/cgit/config.git/commit/config.sub?id=062587eaa891396c936555ae51f7e77eeb71a5fe
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Upstream-Status: Backport
+Index: autoconf-2.69/build-aux/config.sub
+===================================================================
+--- autoconf-2.69.orig/build-aux/config.sub
++++ autoconf-2.69/build-aux/config.sub
+@@ -123,7 +123,7 @@ esac
+ maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
+ case $maybe_os in
+   nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
+-  linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
++  linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+   knetbsd*-gnu* | netbsd*-gnu* | \
+   kopensolaris*-gnu* | \
+   storm-chaos* | os2-emx* | rtmk-nova*)
+@@ -1360,7 +1360,7 @@ case $os in
+ 	      | -chorusos* | -chorusrdb* | -cegcc* \
+ 	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+ 	      | -mingw32* | -linux-gnu* | -linux-android* \
+-	      | -linux-newlib* | -linux-uclibc* \
++	      | -linux-newlib* | -linux-musl* | -linux-uclibc* \
+ 	      | -uxpv* | -beos* | -mpeix* | -udk* \
+ 	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+ 	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
diff --git a/meta/recipes-devtools/autoconf/autoconf_2.69.bb b/meta/recipes-devtools/autoconf/autoconf_2.69.bb
index 809007f..b9f6883 100644
--- a/meta/recipes-devtools/autoconf/autoconf_2.69.bb
+++ b/meta/recipes-devtools/autoconf/autoconf_2.69.bb
@@ -13,6 +13,7 @@ SRC_URI += "file://autoreconf-include.patch \
             file://remove-usr-local-lib-from-m4.patch \
             file://preferbash.patch \
             file://autotest-automake-result-format.patch \
+            file://add_musl_config.patch \
            "
 
 SRC_URI[md5sum] = "82d05e03b93e45f5a39b828dc9c6c29b"
-- 
2.6.3

[PATCH 03/13] gdb: Fix build with musl

[Khem Raj]

This is a patch that has been submitted upstream as well

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-devtools/gdb/gdb.inc                  |  1 +
 ...0001-Use-exported-definitions-of-SIGRTMIN.patch | 54 ++++++++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 meta/recipes-devtools/gdb/gdb/0001-Use-exported-definitions-of-SIGRTMIN.patch

diff --git a/meta/recipes-devtools/gdb/gdb.inc b/meta/recipes-devtools/gdb/gdb.inc
index 88c0213..2162cad 100644
--- a/meta/recipes-devtools/gdb/gdb.inc
+++ b/meta/recipes-devtools/gdb/gdb.inc
@@ -5,6 +5,7 @@ inherit gettext
 SRC_URI += "file://0002-Change-order-of-CFLAGS.patch \
             file://0003-Add-support-for-Renesas-SH-sh4-architecture.patch \
             file://fix-detection-of-64-bit-PPC-inferior-in-gdbserver.patch \
+            file://0001-Use-exported-definitions-of-SIGRTMIN.patch \
            "
 #LDFLAGS_append = " -s"
 #export CFLAGS_append=" -L${STAGING_LIBDIR}"
diff --git a/meta/recipes-devtools/gdb/gdb/0001-Use-exported-definitions-of-SIGRTMIN.patch b/meta/recipes-devtools/gdb/gdb/0001-Use-exported-definitions-of-SIGRTMIN.patch
new file mode 100644
index 0000000..5f0c096
--- /dev/null
+++ b/meta/recipes-devtools/gdb/gdb/0001-Use-exported-definitions-of-SIGRTMIN.patch
@@ -0,0 +1,54 @@
+From 2f97e89e9e4e5797d0d973e1d05c1f44c46b4912 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 5 Jun 2015 20:21:38 -0700
+Subject: [PATCH] Use exorted definitions of SIGRTMIN
+
+Define W_STOPCODE if not defined already
+
+__SIGRTMIN is internal to glibc and other libcs e.g. musl
+may not provide them
+
+Fixes
+https://sourceware.org/bugzilla/show_bug.cgi?id=13012
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Submitted
+
+ gdb/linux-nat.c     | 4 ++--
+ gdb/nat/linux-nat.h | 4 ++++
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
+index 396c30c..50320ee 100644
+--- a/gdb/linux-nat.c
++++ b/gdb/linux-nat.c
+@@ -4856,10 +4856,10 @@ lin_thread_get_thread_signals (sigset_t *set)
+      fortunately they don't change!  */
+ 
+   if (restart == 0)
+-    restart = __SIGRTMIN;
++    restart = SIGRTMIN;
+ 
+   if (cancel == 0)
+-    cancel = __SIGRTMIN + 1;
++    cancel = SIGRTMIN + 1;
+ 
+   sigaddset (set, restart);
+   sigaddset (set, cancel);
+diff --git a/gdb/nat/linux-nat.h b/gdb/nat/linux-nat.h
+index 83a6d91..efbe0fd 100644
+--- a/gdb/nat/linux-nat.h
++++ b/gdb/nat/linux-nat.h
+@@ -25,4 +25,8 @@
+    instead SIGTRAP with bit 7 set.  */
+ #define SYSCALL_SIGTRAP (SIGTRAP | 0x80)
+ 
++#ifndef W_STOPCODE
++#define W_STOPCODE(sig) ((sig) << 8 | 0x7f)
++#endif
++
+ #endif /* LINUX_NAT_H */
+-- 
+2.1.4
+
-- 
2.6.3

[PATCH 04/13] mtd-utils: Backport and create patches to support musl

[Khem Raj]

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 .../mtd/mtd-utils/0001-Fix-build-with-musl.patch   | 53 ++++++++++++++++++++
 ...ibfec-use-standard-C-type-instead-of-u_lo.patch | 56 ++++++++++++++++++++++
 .../mtd/mtd-utils/010-fix-rpmatch.patch            | 24 ++++++++++
 meta/recipes-devtools/mtd/mtd-utils_git.bb         |  4 ++
 4 files changed, 137 insertions(+)
 create mode 100644 meta/recipes-devtools/mtd/mtd-utils/0001-Fix-build-with-musl.patch
 create mode 100644 meta/recipes-devtools/mtd/mtd-utils/0001-mtd-utils-libfec-use-standard-C-type-instead-of-u_lo.patch
 create mode 100644 meta/recipes-devtools/mtd/mtd-utils/010-fix-rpmatch.patch

diff --git a/meta/recipes-devtools/mtd/mtd-utils/0001-Fix-build-with-musl.patch b/meta/recipes-devtools/mtd/mtd-utils/0001-Fix-build-with-musl.patch
new file mode 100644
index 0000000..d3699c6
--- /dev/null
+++ b/meta/recipes-devtools/mtd/mtd-utils/0001-Fix-build-with-musl.patch
@@ -0,0 +1,53 @@
+From e16fa28bc57c29923ab60af2ac343da83e1992d8 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Tue, 6 Oct 2015 23:51:34 +0000
+Subject: [PATCH] Fix build with musl
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ mkfs.jffs2.c  | 44 ++++++++++++++++++++++++++++++++++++++++++--
+ recv_image.c  |  1 -
+ serve_image.c |  1 -
+ 3 files changed, 42 insertions(+), 4 deletions(-)
+
+diff --git a/mkfs.jffs2.c b/mkfs.jffs2.c
+index f09c0b2..ed2dc43 100644
+--- a/mkfs.jffs2.c
++++ b/mkfs.jffs2.c
+@@ -72,6 +72,7 @@
+ #include <byteswap.h>
+ #include <crc32.h>
+ #include <inttypes.h>
++#include <limits.h>
+ 
+ #include "rbtree.h"
+ #include "common.h"
+diff --git a/recv_image.c b/recv_image.c
+index 26a8361..0093831 100644
+--- a/recv_image.c
++++ b/recv_image.c
+@@ -4,7 +4,6 @@
+ #define _BSD_SOURCE	/* struct ip_mreq */
+ 
+ #include <errno.h>
+-#include <error.h>
+ #include <stdio.h>
+ #include <netdb.h>
+ #include <stdlib.h>
+diff --git a/serve_image.c b/serve_image.c
+index 38549a1..4f0e946 100644
+--- a/serve_image.c
++++ b/serve_image.c
+@@ -3,7 +3,6 @@
+ 
+ #include <time.h>
+ #include <errno.h>
+-#include <error.h>
+ #include <netdb.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+-- 
+2.6.1
+
diff --git a/meta/recipes-devtools/mtd/mtd-utils/0001-mtd-utils-libfec-use-standard-C-type-instead-of-u_lo.patch b/meta/recipes-devtools/mtd/mtd-utils/0001-mtd-utils-libfec-use-standard-C-type-instead-of-u_lo.patch
new file mode 100644
index 0000000..46ed956
--- /dev/null
+++ b/meta/recipes-devtools/mtd/mtd-utils/0001-mtd-utils-libfec-use-standard-C-type-instead-of-u_lo.patch
@@ -0,0 +1,56 @@
+From 26cc709291fc6c5d2e45b26c602407706d9142df Mon Sep 17 00:00:00 2001
+From: Imre Kaloz <kaloz@openwrt.org>
+Date: Mon, 4 May 2015 15:36:34 +0200
+Subject: [PATCH] mtd-utils: libfec: use standard C type instead of u_long
+
+Fixes compilation on hosts with the musl C library.
+Also drops the unused u_short typedef.
+
+Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+Upstream-Status: Backport
+
+ lib/libfec.c | 8 +++-----
+ 1 file changed, 3 insertions(+), 5 deletions(-)
+
+diff --git a/lib/libfec.c b/lib/libfec.c
+index ff5a127..bf68381 100644
+--- a/lib/libfec.c
++++ b/lib/libfec.c
+@@ -61,8 +61,6 @@ struct timeval {
+ };
+ #define gettimeofday(x, dummy) { (x)->ticks = clock() ; }
+ #define DIFF_T(a,b) (1+ 1000000*(a.ticks - b.ticks) / CLOCKS_PER_SEC )
+-typedef unsigned long u_long ;
+-typedef unsigned short u_short ;
+ #else /* typically, unix systems */
+ #include <sys/time.h>
+ #define DIFF_T(a,b) \
+@@ -75,12 +73,12 @@ typedef unsigned short u_short ;
+ 	t = x.tv_usec + 1000000* (x.tv_sec & 0xff ) ; \
+ 	}
+ #define TOCK(t) \
+-	{ u_long t1 ; TICK(t1) ; \
++	{ unsigned long t1 ; TICK(t1) ; \
+ 	  if (t1 < t) t = 256000000 + t1 - t ; \
+ 	  else t = t1 - t ; \
+ 	  if (t == 0) t = 1 ;}
+ 
+-u_long ticks[10];	/* vars for timekeeping */
++unsigned long ticks[10];	/* vars for timekeeping */
+ #else
+ #define DEB(x)
+ #define DDB(x)
+@@ -625,7 +623,7 @@ init_fec(void)
+ #define FEC_MAGIC	0xFECC0DEC
+ 
+ struct fec_parms {
+-    u_long magic ;
++    unsigned long magic ;
+     int k, n ;		/* parameters of the code */
+     gf *enc_matrix ;
+ } ;
+-- 
+2.6.0
+
diff --git a/meta/recipes-devtools/mtd/mtd-utils/010-fix-rpmatch.patch b/meta/recipes-devtools/mtd/mtd-utils/010-fix-rpmatch.patch
new file mode 100644
index 0000000..7d783e7
--- /dev/null
+++ b/meta/recipes-devtools/mtd/mtd-utils/010-fix-rpmatch.patch
@@ -0,0 +1,24 @@
+Replace rpmatch() usage with checking first character of line
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+--- a/include/common.h
++++ b/include/common.h
+@@ -122,10 +122,12 @@
+ 		}
+ 
+ 		if (strcmp("\n", line) != 0) {
+-			switch (rpmatch(line)) {
+-			case 0: ret = false; break;
+-			case 1: ret = true; break;
+-			case -1:
++			switch (line[0]) {
++			case 'N':
++			case 'n': ret = false; break;
++			case 'Y':
++			case 'y': ret = true; break;
++			default:
+ 				puts("unknown response; please try again");
+ 				continue;
+ 			}
diff --git a/meta/recipes-devtools/mtd/mtd-utils_git.bb b/meta/recipes-devtools/mtd/mtd-utils_git.bb
index 17dca77..bc15ddd 100644
--- a/meta/recipes-devtools/mtd/mtd-utils_git.bb
+++ b/meta/recipes-devtools/mtd/mtd-utils_git.bb
@@ -15,8 +15,12 @@ SRC_URI = "git://git.infradead.org/mtd-utils.git \
            file://fix-armv7-neon-alignment.patch \
            file://0001-hashtable-Remove-duplicate-hashtable_iterator_value-.patch \
            file://mtd-utils-fix-corrupt-cleanmarker-with-flash_erase--j-command.patch \
+           file://0001-Fix-build-with-musl.patch \
+           file://0001-mtd-utils-libfec-use-standard-C-type-instead-of-u_lo.patch \
 "
 
+SRC_URI_append_libc-musl = " file://010-fix-rpmatch.patch "
+
 S = "${WORKDIR}/git/"
 
 # xattr support creates an additional compile-time dependency on acl because
-- 
2.6.3

[PATCH 05/13] squashfs-tools: Define FNM_EXTMATCH if not defined

[Khem Raj]

helps compiling when using musl

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 .../squashfs-tools/squashfs-tools/fix-compat.patch | 63 ++++++++++++++++++++++
 .../squashfs-tools/squashfs-tools_git.bb           |  1 +
 2 files changed, 64 insertions(+)
 create mode 100644 meta/recipes-devtools/squashfs-tools/squashfs-tools/fix-compat.patch

diff --git a/meta/recipes-devtools/squashfs-tools/squashfs-tools/fix-compat.patch b/meta/recipes-devtools/squashfs-tools/squashfs-tools/fix-compat.patch
new file mode 100644
index 0000000..d545146
--- /dev/null
+++ b/meta/recipes-devtools/squashfs-tools/squashfs-tools/fix-compat.patch
@@ -0,0 +1,63 @@
+Define FNM_EXTMATCH if not defined its glibc specific define
+include missing sys/stat.h for stat* function declarations
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: squashfs-tools/action.c
+===================================================================
+--- squashfs-tools.orig/action.c
++++ squashfs-tools/action.c
+@@ -44,6 +44,10 @@
+ #include "action.h"
+ #include "error.h"
+ 
++#if !defined(FNM_EXTMATCH)
++#define FNM_EXTMATCH 0
++#endif
++
+ /*
+  * code to parse actions
+  */
+Index: squashfs-tools/mksquashfs.c
+===================================================================
+--- squashfs-tools.orig/mksquashfs.c
++++ squashfs-tools/mksquashfs.c
+@@ -1286,6 +1286,10 @@ void write_dir(squashfs_inode *inode, st
+ 		dir_size + 3, directory_block, directory_offset, NULL, NULL,
+ 		dir, 0);
+ 
++#if !defined(FNM_EXTMATCH)
++#define FNM_EXTMATCH 0
++#endif
++
+ #ifdef SQUASHFS_TRACE
+ 	{
+ 		unsigned char *dirp;
+Index: squashfs-tools/pseudo.c
+===================================================================
+--- squashfs-tools.orig/pseudo.c
++++ squashfs-tools/pseudo.c
+@@ -32,6 +32,7 @@
+ #include <stdlib.h>
+ #include <sys/types.h>
+ #include <sys/wait.h>
++#include <sys/stat.h>
+ #include <ctype.h>
+ 
+ #include "pseudo.h"
+Index: squashfs-tools/unsquashfs.c
+===================================================================
+--- squashfs-tools.orig/unsquashfs.c
++++ squashfs-tools/unsquashfs.c
+@@ -38,6 +38,10 @@
+ #include <limits.h>
+ #include <ctype.h>
+ 
++#ifndef FNM_EXTMATCH
++#define FNM_EXTMATCH 0
++#endif
++
+ struct cache *fragment_cache, *data_cache;
+ struct queue *to_reader, *to_inflate, *to_writer, *from_writer;
+ pthread_t *thread, *inflator_thread;
diff --git a/meta/recipes-devtools/squashfs-tools/squashfs-tools_git.bb b/meta/recipes-devtools/squashfs-tools/squashfs-tools_git.bb
index 7aebd00..33ed09a 100644
--- a/meta/recipes-devtools/squashfs-tools/squashfs-tools_git.bb
+++ b/meta/recipes-devtools/squashfs-tools/squashfs-tools_git.bb
@@ -13,6 +13,7 @@ SRCREV = "9c1db6d13a51a2e009f0027ef336ce03624eac0d"
 SRC_URI = "git://github.com/plougher/squashfs-tools.git;protocol=https \
            http://downloads.sourceforge.net/sevenzip/lzma465.tar.bz2;name=lzma \
            file://0001-mksquashfs.c-get-inline-functions-work-with-C99.patch;striplevel=2 \
+           file://fix-compat.patch \
 "
 SRC_URI[lzma.md5sum] = "29d5ffd03a5a3e51aef6a74e9eafb759"
 SRC_URI[lzma.sha256sum] = "c935fd04dd8e0e8c688a3078f3675d699679a90be81c12686837e0880aa0fa1e"
-- 
2.6.3

[PATCH 06/13] mtools: Use proper glibc override to add glibc packages to recommendations

[Khem Raj]

Helps building mtools on musl

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-devtools/mtools/mtools_4.0.18.bb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/recipes-devtools/mtools/mtools_4.0.18.bb b/meta/recipes-devtools/mtools/mtools_4.0.18.bb
index 24c9d49..bc9b79c 100644
--- a/meta/recipes-devtools/mtools/mtools_4.0.18.bb
+++ b/meta/recipes-devtools/mtools/mtools_4.0.18.bb
@@ -6,8 +6,8 @@ LICENSE = "GPLv3"
 LIC_FILES_CHKSUM = "file://COPYING;md5=d32239bcb673463ab874e80d47fae504"
 
 
-RDEPENDS_${PN} = "glibc-gconv-ibm850"
-RRECOMMENDS_${PN} = "\
+RDEPENDS_${PN}_libc-glibc = "glibc-gconv-ibm850"
+RRECOMMENDS_${PN}_libc-glibc = "\
 	glibc-gconv-ibm437 \
 	glibc-gconv-ibm737 \
 	glibc-gconv-ibm775 \
-- 
2.6.3

[PATCH 07/13] musl: Add recipe

[Khem Raj]

musl is posix compliant C library for linux

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-core/musl/musl.inc    | 26 +++++++++++++++++
 meta/recipes-core/musl/musl_git.bb | 58 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+)
 create mode 100644 meta/recipes-core/musl/musl.inc
 create mode 100644 meta/recipes-core/musl/musl_git.bb

diff --git a/meta/recipes-core/musl/musl.inc b/meta/recipes-core/musl/musl.inc
new file mode 100644
index 0000000..c3fd5c8
--- /dev/null
+++ b/meta/recipes-core/musl/musl.inc
@@ -0,0 +1,26 @@
+# Copyright (C) 2014 Khem Raj <raj.khem@gmail.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+SUMMARY = "An implementation of the standard library for Linux-based systems"
+DESCRIPTION = "A new standard library to power a new generation of Linux-based devices. \
+musl is lightweight, fast, simple, free, and strives to be correct in the sense of \
+standards-conformance and safety."
+
+HOMEPAGE = "http://www.musl-libc.org/"
+LICENSE = "MIT"
+SECTION = "libs"
+LIC_FILES_CHKSUM = "file://COPYRIGHT;md5=bccdfe36b123d1b0757d8025278d86ba"
+
+PATH_prepend = "${STAGING_BINDIR_TOOLCHAIN}.${STAGINGCC}:"
+TOOLCHAIN_OPTIONS = " --sysroot=${STAGING_DIR_TCBOOTSTRAP}"
+
+INHIBIT_DEFAULT_DEPS = "1"
+
+STAGINGCC = "gcc-cross-initial-${TARGET_ARCH}"
+STAGINGCC_class-nativesdk = "gcc-crosssdk-initial-${TARGET_ARCH}"
+
+
+FILES_SOLIBSDEV = ""
+FILES_${PN} += "${libdir}/lib*${SOLIBSDEV}"
+INSANE_SKIP_${PN} = "dev-so"
+
diff --git a/meta/recipes-core/musl/musl_git.bb b/meta/recipes-core/musl/musl_git.bb
new file mode 100644
index 0000000..1feb436
--- /dev/null
+++ b/meta/recipes-core/musl/musl_git.bb
@@ -0,0 +1,58 @@
+# Copyright (C) 2014 Khem Raj <raj.khem@gmail.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+require musl.inc
+
+SRCREV = "6c5cad2aa56745302c1d42d2c8baf6424d29c0f3"
+
+PV = "1.1.11+git${SRCPV}"
+
+# mirror is at git://github.com/bminor/musl.git
+
+SRC_URI = "git://git.musl-libc.org/musl \
+          "
+
+S = "${WORKDIR}/git"
+
+PROVIDES += "virtual/libc virtual/${TARGET_PREFIX}libc-for-gcc virtual/libiconv virtual/libintl"
+
+DEPENDS = "virtual/${TARGET_PREFIX}binutils \
+           virtual/${TARGET_PREFIX}gcc-initial \
+           libgcc-initial \
+          "
+
+export CROSS_COMPILE="${TARGET_PREFIX}"
+
+EXTRA_OEMAKE = ""
+
+LDFLAGS += "-Wl,-soname,libc.so"
+
+CONFIGUREOPTS = " \
+    --prefix=${prefix} \
+    --exec-prefix=${exec_prefix} \
+    --bindir=${bindir} \
+    --libdir=${libdir} \
+    --includedir=${includedir} \
+    --syslibdir=${base_libdir} \
+"
+
+do_configure() {
+	${S}/configure ${CONFIGUREOPTS}
+}
+
+do_compile() {
+	oe_runmake
+}
+
+do_install() {
+	oe_runmake install DESTDIR='${D}'
+
+	install -d ${D}${bindir}
+	ln -s ${libdir}/libc.so ${D}${bindir}/ldd
+}
+
+RDEPENDS_${PN}-dev = "linux-libc-headers-dev"
+RPROVIDES_${PN}-dev += "libc-dev virtual-libc-dev"
+RPROVIDES_${PN} += "ldd libsegfault rtld(GNU_HASH)"
+
+LEAD_SONAME = "libc.so"
-- 
2.6.3

[PATCH 08/13] sysvinit: Fix build with musl

[Khem Raj]

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-core/sysvinit/sysvinit/realpath.patch | 78 ++++++++++++++++++++++
 meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb     |  1 +
 2 files changed, 79 insertions(+)
 create mode 100644 meta/recipes-core/sysvinit/sysvinit/realpath.patch

diff --git a/meta/recipes-core/sysvinit/sysvinit/realpath.patch b/meta/recipes-core/sysvinit/sysvinit/realpath.patch
new file mode 100644
index 0000000..5e0dca3
--- /dev/null
+++ b/meta/recipes-core/sysvinit/sysvinit/realpath.patch
@@ -0,0 +1,78 @@
+Fix build on musl use realpath() API its available on all libcs
+
+realpath() API doesnt work on systems with PATH_MAX set to be unlimited e.g. GNU/Hurd
+However for Linux it should always work
+
+Upstream-Status: Inappropriate[Linux specific]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: sysvinit-2.88dsf/src/ifdown.c
+===================================================================
+--- sysvinit-2.88dsf.orig/src/ifdown.c	2010-03-23 07:37:01.000000000 -0700
++++ sysvinit-2.88dsf/src/ifdown.c	2014-04-02 00:43:43.675437029 -0700
+@@ -26,11 +26,11 @@
+ #include <unistd.h>
+ #include <time.h>
+ #include <string.h>
++#include <errno.h>
+ 
+ #include <sys/ioctl.h>
+ #include <sys/socket.h>
+ #include <sys/time.h>
+-#include <sys/errno.h>
+ 
+ #include <net/if.h>
+ #include <netinet/in.h>
+Index: sysvinit-2.88dsf/src/init.c
+===================================================================
+--- sysvinit-2.88dsf.orig/src/init.c	2014-04-02 00:42:10.488770162 -0700
++++ sysvinit-2.88dsf/src/init.c	2014-04-02 00:42:59.432103823 -0700
+@@ -49,6 +49,7 @@
+ #include <utmp.h>
+ #include <ctype.h>
+ #include <stdarg.h>
++#include <sys/ttydefaults.h>
+ #include <sys/syslog.h>
+ #include <sys/time.h>
+ 
+Index: sysvinit-2.88dsf/src/mountpoint.c
+===================================================================
+--- sysvinit-2.88dsf.orig/src/mountpoint.c	2009-09-10 01:28:49.000000000 -0700
++++ sysvinit-2.88dsf/src/mountpoint.c	2014-04-02 00:44:18.248770942 -0700
+@@ -23,6 +23,7 @@
+  *		Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+  */
+ 
++#include <sys/types.h>
+ #include <sys/stat.h>
+ #include <unistd.h>
+ #include <stdlib.h>
+Index: sysvinit-2.88dsf/src/killall5.c
+===================================================================
+--- sysvinit-2.88dsf.orig/src/killall5.c	2014-03-26 00:49:52.982668074 -0700
++++ sysvinit-2.88dsf/src/killall5.c	2014-04-02 00:46:45.838771653 -0700
+@@ -846,9 +846,9 @@
+ 	char *oargv1, *pargv1;
+ 	if ((o->argv0 && p->argv0 && !strcmp(o->argv0,p->argv0))) {
+ 		if (o->argv1 && p->argv1) {
+-			if ((oargv1 = canonicalize_file_name(o->argv1)) == NULL)
++			if ((oargv1 = realpath(o->argv1, NULL)) == NULL)
+ 				oargv1 = strdup(o->argv1);
+-			if ((pargv1 = canonicalize_file_name(p->argv1)) == NULL)
++			if ((pargv1 = realpath(p->argv1, NULL)) == NULL)
+ 				pargv1 = strdup(p->argv1);
+ 			if (! strcmp(oargv1, pargv1)) {
+ 				ret = 1;
+Index: sysvinit-2.88dsf/src/wall.c
+===================================================================
+--- sysvinit-2.88dsf.orig/src/wall.c	2009-11-22 14:05:53.000000000 -0800
++++ sysvinit-2.88dsf/src/wall.c	2014-04-02 00:49:15.258772217 -0700
+@@ -29,6 +29,7 @@
+ #include <unistd.h>
+ #include <pwd.h>
+ #include <syslog.h>
++#include <time.h>
+ #include "init.h"
+ 
+ 
diff --git a/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb b/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb
index 5dfe39e..e4aa4c3 100644
--- a/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb
+++ b/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb
@@ -14,6 +14,7 @@ SRC_URI = "${SAVANNAH_GNU_MIRROR}/sysvinit/sysvinit-${PV}.tar.bz2 \
            file://crypt-lib.patch \
            file://pidof-add-m-option.patch \
            file://0001-This-fixes-an-issue-that-clang-reports-about-mutlipl.patch \
+           file://realpath.patch \
            file://rcS-default \
            file://rc \
            file://rcS \
-- 
2.6.3

Re: [PATCH 08/13] sysvinit: Fix build with musl

[Phil Blundell]

On Tue, 2015-12-08 at 08:12 +0000, Khem Raj wrote:
> 
+Upstream-Status: Inappropriate[Linux specific]
> 


Er, isn't sysvinit itself fairly Linux-specific?

p.

Re: [PATCH 08/13] sysvinit: Fix build with musl

[Phil Blundell]

On Tue, 2015-12-08 at 18:08 +0000, Phil Blundell wrote:
> On Tue, 2015-12-08 at 08:12 +0000, Khem Raj wrote:
> > 
> +Upstream-Status: Inappropriate[Linux specific]
> > 
> 
> 
> Er, isn't sysvinit itself fairly Linux-specific?

Oh, never mind, I see the comment about Hurd now.

p.

[PATCH 09/13] gettext: Delete libintl.h and charset.alias

[Khem Raj]

libintl.h is already provided by musl and charset.alias is regenerated
by packages themselves

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-core/gettext/gettext_0.16.1.bb | 5 +++++
 meta/recipes-core/gettext/gettext_0.19.4.bb | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/meta/recipes-core/gettext/gettext_0.16.1.bb b/meta/recipes-core/gettext/gettext_0.16.1.bb
index f9f7a7f..cd0b759 100644
--- a/meta/recipes-core/gettext/gettext_0.16.1.bb
+++ b/meta/recipes-core/gettext/gettext_0.16.1.bb
@@ -39,6 +39,11 @@ do_configure_prepend() {
 	rm -f ${S}/config/m4/libtool.m4
 }
 
+do_install_append_libc-musl () {
+	rm -f ${D}${libdir}/charset.alias
+	rm -f ${D}${includedir}/libintl.h
+}
+
 # these lack the .x behind the .so, but shouldn't be in the -dev package
 # Otherwise you get the following results:
 # 7.4M    glibc/images/ep93xx/Angstrom-console-image-glibc-ipk-2008.1-test-20080104-ep93xx.rootfs.tar.gz
diff --git a/meta/recipes-core/gettext/gettext_0.19.4.bb b/meta/recipes-core/gettext/gettext_0.19.4.bb
index cebf6c7..a9c919a 100644
--- a/meta/recipes-core/gettext/gettext_0.19.4.bb
+++ b/meta/recipes-core/gettext/gettext_0.19.4.bb
@@ -42,6 +42,10 @@ EXTRA_OECONF += "--without-lispdir \
 acpaths = '-I ${S}/gettext-runtime/m4 \
            -I ${S}/gettext-tools/m4'
 
+do_install_append_libc-musl () {
+	rm -f ${D}${libdir}/charset.alias
+	rm -f ${D}${includedir}/libintl.h
+}
 
 # these lack the .x behind the .so, but shouldn't be in the -dev package
 # Otherwise you get the following results:
-- 
2.6.3

[PATCH 10/13] busybox: Add config for musl

[Khem Raj]

Default config is enabling additional features that dont compile with
musl so lets disable them for musl case and use posix compliant
getpwent()

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 ...user-use-POSIX-getpwent-instead-of-getpwe.patch | 71 ++++++++++++++++++++++
 meta/recipes-core/busybox/busybox/musl.cfg         | 12 ++++
 meta/recipes-core/busybox/busybox_1.24.1.bb        |  2 +
 3 files changed, 85 insertions(+)
 create mode 100644 meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch
 create mode 100644 meta/recipes-core/busybox/busybox/musl.cfg

diff --git a/meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch b/meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch
new file mode 100644
index 0000000..4cb9a73
--- /dev/null
+++ b/meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch
@@ -0,0 +1,71 @@
+From f47fa75ef19a43848dedb4a2bff79368878362bf Mon Sep 17 00:00:00 2001
+From: Natanael Copa <ncopa@alpinelinux.org>
+Date: Tue, 22 Apr 2014 12:41:20 +0000
+Subject: [PATCH] linedit, deluser: use POSIX getpwent instead of getpwent_r
+
+This fixes building with musl libc.
+
+Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
+---
+Upstream-Status: backport
+
+ libbb/lineedit.c     | 11 ++++-------
+ loginutils/deluser.c | 11 +++++------
+ 2 files changed, 9 insertions(+), 13 deletions(-)
+
+diff --git a/libbb/lineedit.c b/libbb/lineedit.c
+index 8564307..99e6e2c 100644
+--- a/libbb/lineedit.c
++++ b/libbb/lineedit.c
+@@ -672,20 +672,17 @@ static char *username_path_completion(char *ud)
+  */
+ static NOINLINE unsigned complete_username(const char *ud)
+ {
+-	/* Using _r function to avoid pulling in static buffers */
+-	char line_buff[256];
+-	struct passwd pwd;
+-	struct passwd *result;
++	struct passwd *pw;
+ 	unsigned userlen;
+ 
+ 	ud++; /* skip ~ */
+ 	userlen = strlen(ud);
+ 
+ 	setpwent();
+-	while (!getpwent_r(&pwd, line_buff, sizeof(line_buff), &result)) {
++	while ((pw = getpwent())) {
+ 		/* Null usernames should result in all users as possible completions. */
+-		if (/*!userlen || */ strncmp(ud, pwd.pw_name, userlen) == 0) {
+-			add_match(xasprintf("~%s/", pwd.pw_name));
++		if (/*!userlen || */ strncmp(ud, pw->pw_name, userlen) == 0) {
++			add_match(xasprintf("~%s/", pw->pw_name));
+ 		}
+ 	}
+ 	endpwent();
+diff --git a/loginutils/deluser.c b/loginutils/deluser.c
+index e39ac55..d7d9b24 100644
+--- a/loginutils/deluser.c
++++ b/loginutils/deluser.c
+@@ -73,14 +73,13 @@ int deluser_main(int argc, char **argv)
+ 			if (!member) {
+ 				/* "delgroup GROUP" */
+ 				struct passwd *pw;
+-				struct passwd pwent;
+ 				/* Check if the group is in use */
+-#define passwd_buf bb_common_bufsiz1
+-				while (!getpwent_r(&pwent, passwd_buf, sizeof(passwd_buf), &pw)) {
+-					if (pwent.pw_gid == gr->gr_gid)
+-						bb_error_msg_and_die("'%s' still has '%s' as their primary group!", pwent.pw_name, name);
++				setpwent();
++				while ((pw = getpwent())) {
++					if (pw->pw_gid == gr->gr_gid)
++						bb_error_msg_and_die("'%s' still has '%s' as their primary group!", pw->pw_name, name);
+ 				}
+-				//endpwent();
++				endpwent();
+ 			}
+ 			pfile = bb_path_group_file;
+ 			if (ENABLE_FEATURE_SHADOWPASSWDS)
+-- 
+1.9.2
+
diff --git a/meta/recipes-core/busybox/busybox/musl.cfg b/meta/recipes-core/busybox/busybox/musl.cfg
new file mode 100644
index 0000000..facfe85
--- /dev/null
+++ b/meta/recipes-core/busybox/busybox/musl.cfg
@@ -0,0 +1,12 @@
+# CONFIG_EXTRA_COMPAT is not set
+# CONFIG_SELINUX is not set
+# CONFIG_FEATURE_HAVE_RPC is not set
+# CONFIG_WERROR is not set
+# CONFIG_FEATURE_SYSTEMD is not set
+# CONFIG_FEATURE_VI_REGEX_SEARCH is not set
+# CONFIG_PAM is not set
+# CONFIG_FEATURE_INETD_RPC is not set
+# CONFIG_SELINUXENABLED is not set
+# CONFIG_FEATURE_MOUNT_NFS is not set
+# CONFIG_FEATURE_UTMP is not set
+
diff --git a/meta/recipes-core/busybox/busybox_1.24.1.bb b/meta/recipes-core/busybox/busybox_1.24.1.bb
index 7d2a7b2..7c9e5ea 100644
--- a/meta/recipes-core/busybox/busybox_1.24.1.bb
+++ b/meta/recipes-core/busybox/busybox_1.24.1.bb
@@ -32,12 +32,14 @@ SRC_URI = "http://www.busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
            file://busybox-cross-menuconfig.patch \
            file://0001-Use-CC-when-linking-instead-of-LD-and-use-CFLAGS-and.patch \
            file://0002-Passthrough-r-to-linker.patch \
+           file://0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch \
            file://mount-via-label.cfg \
            file://sha1sum.cfg \
            file://sha256sum.cfg \
            file://getopts.cfg \
            file://resize.cfg \
 "
+SRC_URI_append_libc-musl = " file://musl.cfg "
 
 SRC_URI[tarball.md5sum] = "be98a40cadf84ce2d6b05fa41a275c6a"
 SRC_URI[tarball.sha256sum] = "37d03132cc078937360b392170b7a1d0e5b322eee9f57c0b82292a8b1f0afe3d"
-- 
2.6.3

Re: [PATCH 10/13] busybox: Add config for musl

[Khem Raj]

[-- Attachment #1: Type: text/plain, Size: 5593 bytes --]


> On Dec 8, 2015, at 12:12 AM, Khem Raj <raj.khem@gmail.com> wrote:
> 
> Default config is enabling additional features that dont compile with
> musl so lets disable them for musl case and use posix compliant
> getpwent()

0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch is no longer needed after 1.24 upgrade
so I have dropped it from pull request branch.


> 
> Signed-off-by: Khem Raj <raj.khem@gmail.com>
> ---
> ...user-use-POSIX-getpwent-instead-of-getpwe.patch | 71 ++++++++++++++++++++++
> meta/recipes-core/busybox/busybox/musl.cfg         | 12 ++++
> meta/recipes-core/busybox/busybox_1.24.1.bb        |  2 +
> 3 files changed, 85 insertions(+)
> create mode 100644 meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch
> create mode 100644 meta/recipes-core/busybox/busybox/musl.cfg
> 
> diff --git a/meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch b/meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch
> new file mode 100644
> index 0000000..4cb9a73
> --- /dev/null
> +++ b/meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch
> @@ -0,0 +1,71 @@
> +From f47fa75ef19a43848dedb4a2bff79368878362bf Mon Sep 17 00:00:00 2001
> +From: Natanael Copa <ncopa@alpinelinux.org>
> +Date: Tue, 22 Apr 2014 12:41:20 +0000
> +Subject: [PATCH] linedit, deluser: use POSIX getpwent instead of getpwent_r
> +
> +This fixes building with musl libc.
> +
> +Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
> +---
> +Upstream-Status: backport
> +
> + libbb/lineedit.c     | 11 ++++-------
> + loginutils/deluser.c | 11 +++++------
> + 2 files changed, 9 insertions(+), 13 deletions(-)
> +
> +diff --git a/libbb/lineedit.c b/libbb/lineedit.c
> +index 8564307..99e6e2c 100644
> +--- a/libbb/lineedit.c
> ++++ b/libbb/lineedit.c
> +@@ -672,20 +672,17 @@ static char *username_path_completion(char *ud)
> +  */
> + static NOINLINE unsigned complete_username(const char *ud)
> + {
> +-	/* Using _r function to avoid pulling in static buffers */
> +-	char line_buff[256];
> +-	struct passwd pwd;
> +-	struct passwd *result;
> ++	struct passwd *pw;
> + 	unsigned userlen;
> +
> + 	ud++; /* skip ~ */
> + 	userlen = strlen(ud);
> +
> + 	setpwent();
> +-	while (!getpwent_r(&pwd, line_buff, sizeof(line_buff), &result)) {
> ++	while ((pw = getpwent())) {
> + 		/* Null usernames should result in all users as possible completions. */
> +-		if (/*!userlen || */ strncmp(ud, pwd.pw_name, userlen) == 0) {
> +-			add_match(xasprintf("~%s/", pwd.pw_name));
> ++		if (/*!userlen || */ strncmp(ud, pw->pw_name, userlen) == 0) {
> ++			add_match(xasprintf("~%s/", pw->pw_name));
> + 		}
> + 	}
> + 	endpwent();
> +diff --git a/loginutils/deluser.c b/loginutils/deluser.c
> +index e39ac55..d7d9b24 100644
> +--- a/loginutils/deluser.c
> ++++ b/loginutils/deluser.c
> +@@ -73,14 +73,13 @@ int deluser_main(int argc, char **argv)
> + 			if (!member) {
> + 				/* "delgroup GROUP" */
> + 				struct passwd *pw;
> +-				struct passwd pwent;
> + 				/* Check if the group is in use */
> +-#define passwd_buf bb_common_bufsiz1
> +-				while (!getpwent_r(&pwent, passwd_buf, sizeof(passwd_buf), &pw)) {
> +-					if (pwent.pw_gid == gr->gr_gid)
> +-						bb_error_msg_and_die("'%s' still has '%s' as their primary group!", pwent.pw_name, name);
> ++				setpwent();
> ++				while ((pw = getpwent())) {
> ++					if (pw->pw_gid == gr->gr_gid)
> ++						bb_error_msg_and_die("'%s' still has '%s' as their primary group!", pw->pw_name, name);
> + 				}
> +-				//endpwent();
> ++				endpwent();
> + 			}
> + 			pfile = bb_path_group_file;
> + 			if (ENABLE_FEATURE_SHADOWPASSWDS)
> +--
> +1.9.2
> +
> diff --git a/meta/recipes-core/busybox/busybox/musl.cfg b/meta/recipes-core/busybox/busybox/musl.cfg
> new file mode 100644
> index 0000000..facfe85
> --- /dev/null
> +++ b/meta/recipes-core/busybox/busybox/musl.cfg
> @@ -0,0 +1,12 @@
> +# CONFIG_EXTRA_COMPAT is not set
> +# CONFIG_SELINUX is not set
> +# CONFIG_FEATURE_HAVE_RPC is not set
> +# CONFIG_WERROR is not set
> +# CONFIG_FEATURE_SYSTEMD is not set
> +# CONFIG_FEATURE_VI_REGEX_SEARCH is not set
> +# CONFIG_PAM is not set
> +# CONFIG_FEATURE_INETD_RPC is not set
> +# CONFIG_SELINUXENABLED is not set
> +# CONFIG_FEATURE_MOUNT_NFS is not set
> +# CONFIG_FEATURE_UTMP is not set
> +
> diff --git a/meta/recipes-core/busybox/busybox_1.24.1.bb b/meta/recipes-core/busybox/busybox_1.24.1.bb
> index 7d2a7b2..7c9e5ea 100644
> --- a/meta/recipes-core/busybox/busybox_1.24.1.bb
> +++ b/meta/recipes-core/busybox/busybox_1.24.1.bb
> @@ -32,12 +32,14 @@ SRC_URI = "http://www.busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
>            file://busybox-cross-menuconfig.patch \
>            file://0001-Use-CC-when-linking-instead-of-LD-and-use-CFLAGS-and.patch \
>            file://0002-Passthrough-r-to-linker.patch \
> +           file://0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch \
>            file://mount-via-label.cfg \
>            file://sha1sum.cfg \
>            file://sha256sum.cfg \
>            file://getopts.cfg \
>            file://resize.cfg \
> "
> +SRC_URI_append_libc-musl = " file://musl.cfg "
> 
> SRC_URI[tarball.md5sum] = "be98a40cadf84ce2d6b05fa41a275c6a"
> SRC_URI[tarball.sha256sum] = "37d03132cc078937360b392170b7a1d0e5b322eee9f57c0b82292a8b1f0afe3d"
> --
> 2.6.3
> 


[-- Attachment #2: Message signed with OpenPGP using GPGMail --]
[-- Type: application/pgp-signature, Size: 211 bytes --]

[PATCH 11/13] openssl: Add musl configuration support

[Khem Raj]

use termios instead of termio

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-connectivity/openssl/openssl.inc      |  4 +++-
 .../openssl/openssl/configure-musl-target.patch    | 27 ++++++++++++++++++++++
 .../recipes-connectivity/openssl/openssl_1.0.2d.bb |  1 +
 3 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-connectivity/openssl/openssl/configure-musl-target.patch

diff --git a/meta/recipes-connectivity/openssl/openssl.inc b/meta/recipes-connectivity/openssl/openssl.inc
index 429fc5e..199e9ab 100644
--- a/meta/recipes-connectivity/openssl/openssl.inc
+++ b/meta/recipes-connectivity/openssl/openssl.inc
@@ -18,10 +18,12 @@ S = "${WORKDIR}/openssl-${PV}"
 PACKAGECONFIG[perl] = ",,,"
 
 AR_append = " r"
+TERMIO_libc-musl = "-DTERMIOS"
+TERMIO ?= "-DTERMIO"
 # Avoid binaries being marked as requiring an executable stack since it 
 # doesn't(which causes and this causes issues with SELinux
 CFLAG = "${@base_conditional('SITEINFO_ENDIANNESS', 'le', '-DL_ENDIAN', '-DB_ENDIAN', d)} \
-	-DTERMIO ${CFLAGS} -Wall -Wa,--noexecstack"
+	 ${TERMIO} ${CFLAGS} -Wall -Wa,--noexecstack"
 
 # -02 does not work on mipsel: ssh hangs when it tries to read /dev/urandom
 CFLAG_mtx-1 := "${@'${CFLAG}'.replace('-O2', '')}"
diff --git a/meta/recipes-connectivity/openssl/openssl/configure-musl-target.patch b/meta/recipes-connectivity/openssl/openssl/configure-musl-target.patch
new file mode 100644
index 0000000..613dc7b
--- /dev/null
+++ b/meta/recipes-connectivity/openssl/openssl/configure-musl-target.patch
@@ -0,0 +1,27 @@
+Add musl triplet support
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: openssl-1.0.2a/Configure
+===================================================================
+--- openssl-1.0.2a.orig/Configure
++++ openssl-1.0.2a/Configure
+@@ -431,7 +431,7 @@ my %table=(
+ #
+ #       ./Configure linux-armv4 -march=armv6 -D__ARM_MAX_ARCH__=8
+ #
+-"linux-armv4",	"gcc: -O3 -Wall::-D_REENTRANT::-ldl:BN_LLONG RC4_CHAR RC4_CHUNK DES_INT DES_UNROLL BF_PTR:${armv4_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
++"linux-armv4", "gcc: -O3 -Wall::-D_REENTRANT::-ldl:BN_LLONG RC4_CHAR RC4_CHUNK DES_INT DES_UNROLL BF_PTR:${armv4_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+ "linux-aarch64","gcc: -O3 -Wall::-D_REENTRANT::-ldl:SIXTY_FOUR_BIT_LONG RC4_CHAR RC4_CHUNK DES_INT DES_UNROLL BF_PTR:${aarch64_asm}:linux64:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+ # Configure script adds minimally required -march for assembly support,
+ # if no -march was specified at command line. mips32 and mips64 below
+@@ -504,6 +504,8 @@ my %table=(
+ "linux-gnueabi-armeb","$ENV{'CC'}:-DB_ENDIAN -O3 -fomit-frame-pointer -Wall::-D_REENTRANT::-ldl:BN_LLONG DES_RISC1:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+ "linux-uclibceabi-arm","$ENV{'CC'}:-DL_ENDIAN -O3 -fomit-frame-pointer -Wall::-D_REENTRANT::-ldl:BN_LLONG DES_RISC1:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+ "linux-uclibceabi-armeb","$ENV{'CC'}:-DB_ENDIAN -O3 -fomit-frame-pointer -Wall::-D_REENTRANT::-ldl:BN_LLONG DES_RISC1:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
++"linux-musleabi-arm","$ENV{'CC'}:-DL_ENDIAN -O3 -fomit-frame-pointer -Wall::-D_REENTRANT::-ldl:BN_LLONG DES_RISC1:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
++"linux-musleabi-armeb","$ENV{'CC'}:-DB_ENDIAN -O3 -fomit-frame-pointer -Wall::-D_REENTRANT::-ldl:BN_LLONG DES_RISC1:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+ 
+ "linux-avr32","$ENV{'CC'}:-O3 -fomit-frame-pointer -Wall::-D_REENTRANT::-ldl:BN_LLONG DES_RISC1:${no_asm}:dlfcn:linux-shared:-fPIC::.so.\$(SHLIB_MAJOR).",
+ 
diff --git a/meta/recipes-connectivity/openssl/openssl_1.0.2d.bb b/meta/recipes-connectivity/openssl/openssl_1.0.2d.bb
index 249f8c4..454d075 100644
--- a/meta/recipes-connectivity/openssl/openssl_1.0.2d.bb
+++ b/meta/recipes-connectivity/openssl/openssl_1.0.2d.bb
@@ -37,6 +37,7 @@ SRC_URI += "file://find.pl;subdir=${BP}/util/ \
             file://crypto_use_bigint_in_x86-64_perl.patch \
             file://openssl-1.0.2a-x32-asm.patch \
             file://ptest_makefile_deps.patch  \
+            file://configure-musl-target.patch \
            "
 
 SRC_URI[md5sum] = "38dd619b2e77cbac69b99f52a053d25a"
-- 
2.6.3

[PATCH 12/13] libpam: Fix build with musl

[Khem Raj]

Define strndupa if not available in libc additionally fix headers
to explicitly needed include files which glibc was including indirectly

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 ...upport-for-defining-missing-funcitonality.patch | 68 ++++++++++++++++++++++
 .../pam/libpam/include_paths_header.patch          | 59 +++++++++++++++++++
 meta/recipes-extended/pam/libpam_1.2.1.bb          |  5 +-
 3 files changed, 131 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-extended/pam/libpam/0001-Add-support-for-defining-missing-funcitonality.patch
 create mode 100644 meta/recipes-extended/pam/libpam/include_paths_header.patch

diff --git a/meta/recipes-extended/pam/libpam/0001-Add-support-for-defining-missing-funcitonality.patch b/meta/recipes-extended/pam/libpam/0001-Add-support-for-defining-missing-funcitonality.patch
new file mode 100644
index 0000000..c55b648
--- /dev/null
+++ b/meta/recipes-extended/pam/libpam/0001-Add-support-for-defining-missing-funcitonality.patch
@@ -0,0 +1,68 @@
+From 45d1ed58927593968faead7dbb295f3922f41a2f Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sat, 8 Aug 2015 14:16:43 -0700
+Subject: [PATCH] Add support for defining missing funcitonality
+
+In order to support alternative libc on linux ( musl, bioninc ) etc we
+need to check for glibc-only features and provide alternatives, in this
+list strndupa is first one, when configure detects that its not included
+in system C library then the altrnative implementation from missing.h is
+used
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Pending
+
+ configure.ac                |  3 +++
+ libpam/include/missing.h    | 12 ++++++++++++
+ modules/pam_exec/pam_exec.c |  1 +
+ 3 files changed, 16 insertions(+)
+ create mode 100644 libpam/include/missing.h
+
+diff --git a/configure.ac b/configure.ac
+index 9e1257f..cbed979 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -599,6 +599,9 @@ dnl
+ AC_CHECK_DECL(__NR_keyctl, [have_key_syscalls=1],[have_key_syscalls=0],[#include <sys/syscall.h>])
+ AC_CHECK_DECL(ENOKEY, [have_key_errors=1],[have_key_errors=0],[#include <errno.h>])
+ 
++# musl and bionic don't have strndupa
++AC_CHECK_DECLS_ONCE([strndupa])
++
+ HAVE_KEY_MANAGEMENT=0
+ if test $have_key_syscalls$have_key_errors = 11
+ then
+diff --git a/libpam/include/missing.h b/libpam/include/missing.h
+new file mode 100644
+index 0000000..3cf011c
+--- /dev/null
++++ b/libpam/include/missing.h
+@@ -0,0 +1,12 @@
++#pragma once
++
++#if !HAVE_DECL_STRNDUPA
++#define strndupa(s, n)                                                  \
++        ({                                                              \
++                const char *__old = (s);                                \
++                size_t __len = strnlen(__old, (n));                     \
++                char *__new = alloca(__len + 1);                        \
++                __new[__len] = '\0';                                    \
++                memcpy(__new, __old, __len);                            \
++         })
++#endif
+diff --git a/modules/pam_exec/pam_exec.c b/modules/pam_exec/pam_exec.c
+index 17ba6ca..3aa2694 100644
+--- a/modules/pam_exec/pam_exec.c
++++ b/modules/pam_exec/pam_exec.c
+@@ -59,6 +59,7 @@
+ #include <security/pam_modutil.h>
+ #include <security/pam_ext.h>
+ #include <security/_pam_macros.h>
++#include <missing.h>
+ 
+ #define ENV_ITEM(n) { (n), #n }
+ static struct {
+-- 
+2.1.4
+
diff --git a/meta/recipes-extended/pam/libpam/include_paths_header.patch b/meta/recipes-extended/pam/libpam/include_paths_header.patch
new file mode 100644
index 0000000..e4eb956
--- /dev/null
+++ b/meta/recipes-extended/pam/libpam/include_paths_header.patch
@@ -0,0 +1,59 @@
+This patch adds missing include for paths.h which should provide
+_PATH_LASTLOG definition
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Index: Linux-PAM-1.1.6/modules/pam_lastlog/pam_lastlog.c
+===================================================================
+--- Linux-PAM-1.1.6.orig/modules/pam_lastlog/pam_lastlog.c
++++ Linux-PAM-1.1.6/modules/pam_lastlog/pam_lastlog.c
+@@ -23,9 +23,11 @@
+ #include <stdarg.h>
+ #include <stdio.h>
+ #include <string.h>
++#include <sys/file.h>
+ #include <sys/types.h>
+ #include <syslog.h>
+ #include <unistd.h>
++#include <paths.h>
+ 
+ #if defined(hpux) || defined(sunos) || defined(solaris)
+ # ifndef _PATH_LASTLOG
+@@ -332,6 +334,23 @@ last_login_read(pam_handle_t *pamh, int
+     return retval;
+ }
+ 
++#ifndef __GLIBC__
++static void logwtmp(const char * line, const char * name, const char * host)
++{
++    struct utmp u;
++    memset(&u, 0, sizeof(u));
++
++    u.ut_pid = getpid();
++    u.ut_type = name[0] ? USER_PROCESS : DEAD_PROCESS;
++    strncpy(u.ut_line, line, sizeof(u.ut_line));
++    strncpy(u.ut_name, name, sizeof(u.ut_name));
++    strncpy(u.ut_host, host, sizeof(u.ut_host));
++    gettimeofday(&(u.ut_tv), NULL);
++
++    updwtmp(_PATH_WTMP, &u);
++}
++#endif /* __GLIBC__ */
++
+ static int
+ last_login_write(pam_handle_t *pamh, int announce, int last_fd,
+ 		 uid_t uid, const char *user)
+Index: Linux-PAM-1.1.6/modules/Makefile.am
+===================================================================
+--- Linux-PAM-1.1.6.orig/modules/Makefile.am
++++ Linux-PAM-1.1.6/modules/Makefile.am
+@@ -7,7 +7,7 @@ SUBDIRS = pam_access pam_cracklib pam_de
+ 	pam_group pam_issue pam_keyinit pam_lastlog pam_limits \
+ 	pam_listfile pam_localuser pam_loginuid pam_mail \
+ 	pam_mkhomedir pam_motd pam_namespace pam_nologin \
+-	pam_permit pam_pwhistory pam_rhosts pam_rootok pam_securetty \
++	pam_permit pam_pwhistory pam_rootok pam_securetty \
+ 	pam_selinux pam_sepermit pam_shells pam_stress \
+ 	pam_succeed_if pam_tally pam_tally2 pam_time pam_timestamp \
+ 	pam_tty_audit pam_umask \
diff --git a/meta/recipes-extended/pam/libpam_1.2.1.bb b/meta/recipes-extended/pam/libpam_1.2.1.bb
index 0353356..7e81e72 100644
--- a/meta/recipes-extended/pam/libpam_1.2.1.bb
+++ b/meta/recipes-extended/pam/libpam_1.2.1.bb
@@ -31,7 +31,10 @@ SRC_URI[sha256sum] = "342b1211c0d3b203a7df2540a5b03a428a087bd8a48c17e49ae268f992
 SRC_URI_append_libc-uclibc = " file://pam-no-innetgr.patch \
                                file://use-utmpx.patch"
 
-SRC_URI_append_libc-musl = " file://pam-no-innetgr.patch"
+SRC_URI_append_libc-musl = " file://pam-no-innetgr.patch \
+                             file://0001-Add-support-for-defining-missing-funcitonality.patch \
+                             file://include_paths_header.patch \
+                           "
 
 DEPENDS = "bison flex flex-native cracklib"
 
-- 
2.6.3

[PATCH 13/13] attr: Add patch to account for use of internal glibc header

[Khem Raj]

based on suggestions on musl FAQ
http://wiki.musl-libc.org/wiki/FAQ

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-support/attr/attr_2.4.47.bb           |  4 +-
 .../attr/files/dont-use-decl-macros.patch          | 56 ++++++++++++++++++++++
 2 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-support/attr/files/dont-use-decl-macros.patch

diff --git a/meta/recipes-support/attr/attr_2.4.47.bb b/meta/recipes-support/attr/attr_2.4.47.bb
index ad40c9b..44eee39 100644
--- a/meta/recipes-support/attr/attr_2.4.47.bb
+++ b/meta/recipes-support/attr/attr_2.4.47.bb
@@ -2,7 +2,9 @@ require attr.inc
 
 # configure.ac was missing from the release tarball. This should be fixed in
 # future releases of attr, remove this when updating the recipe.
-SRC_URI_append += "file://attr-Missing-configure.ac.patch"
+SRC_URI_append += "file://attr-Missing-configure.ac.patch \
+                   file://dont-use-decl-macros.patch \
+                  "
 
 SRC_URI[md5sum] = "84f58dec00b60f2dc8fd1c9709291cc7"
 SRC_URI[sha256sum] = "25772f653ac5b2e3ceeb89df50e4688891e21f723c460636548971652af0a859"
diff --git a/meta/recipes-support/attr/files/dont-use-decl-macros.patch b/meta/recipes-support/attr/files/dont-use-decl-macros.patch
new file mode 100644
index 0000000..9d4b892
--- /dev/null
+++ b/meta/recipes-support/attr/files/dont-use-decl-macros.patch
@@ -0,0 +1,56 @@
+Use extern "C" instead of __BEGIN_DECL/__END_DECL macros
+these macros are defined in sys/cdefs.h for glibc and this header is not available on all libc
+
+anyway they defined like below
+
+#ifdef __cplusplus
+# define __BEGIN_DECLS extern "C" {
+# define __END_DECLS }
+#else
+# define __BEGIN_DECLS /* empty */
+# define __END_DECLS /* empty */
+#endif
+
+__THROW macro is also not available on musl, defined thusly
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: attr-2.4.47/include/xattr.h
+===================================================================
+--- attr-2.4.47.orig/include/xattr.h	2014-04-02 00:01:30.252091280 -0700
++++ attr-2.4.47/include/xattr.h	2014-04-02 00:12:57.985428099 -0700
+@@ -30,8 +30,20 @@
+ #define XATTR_CREATE  0x1       /* set value, fail if attr already exists */
+ #define XATTR_REPLACE 0x2       /* set value, fail if attr does not exist */
+ 
+-
+-__BEGIN_DECLS
++#ifndef __THROW
++# ifndef __GNUC_PREREQ
++#  define __GNUC_PREREQ(maj, min) (0)
++# endif
++# if defined __cplusplus && __GNUC_PREREQ (2,8)
++#  define __THROW       throw ()
++# else
++#  define __THROW
++# endif
++#endif
++
++#ifdef __cplusplus
++extern "C" {
++#endif
+ 
+ extern int setxattr (const char *__path, const char *__name,
+ 		      const void *__value, size_t __size, int __flags) __THROW;
+@@ -58,6 +70,8 @@
+ extern int lremovexattr (const char *__path, const char *__name) __THROW;
+ extern int fremovexattr (int __filedes,   const char *__name) __THROW;
+ 
+-__END_DECLS
++#ifdef __cplusplus
++}
++#endif
+ 
+ #endif	/* __XATTR_H__ */
-- 
2.6.3

Re: [PATCH 00/13] Add musl to OE-Core

[Khem Raj]

[-- Attachment #1: Type: text/plain, Size: 5839 bytes --]


> On Dec 8, 2015, at 12:12 AM, Khem Raj <raj.khem@gmail.com> wrote:
> 
> This is a mimimal set of changes brought in from meta-musl
> to OE-Core, with this set one can build core-image-minimal using musl
> by setting
> 
> TCLIBC=musl
> 
> for all supported architectures, eventually we will bring
> more changes to other packages which will enable more complex
> image builds and eventually world.
> 
> v2: Address review feedback


For some reason create-pull-request does not add the pull branch info here the branch is here on github

git://github.com/kraj/openembedded-core kraj/musl

web-ui

https://github.com/kraj/openembedded-core/commits/kraj/musl

> 
> Khem Raj (13):
>  gcc: Add support for building musl configuration
>  autoconf: Add musl support
>  gdb: Fix build with musl
>  mtd-utils: Backport and create patches to support musl
>  squashfs-tools: Define FNM_EXTMATCH if not defined
>  mtools: Use proper glibc override to add glibc packages to
>    recommendations
>  musl: Add recipe
>  sysvinit: Fix build with musl
>  gettext: Delete libintl.h and charset.alias
>  busybox: Add config for musl
>  openssl: Add musl configuration support
>  libpam: Fix build with musl
>  attr: Add patch to account for use of internal glibc header
> 
> meta/recipes-connectivity/openssl/openssl.inc      |   4 +-
> .../openssl/openssl/configure-musl-target.patch    |  27 +++
> .../recipes-connectivity/openssl/openssl_1.0.2d.bb |   1 +
> ...user-use-POSIX-getpwent-instead-of-getpwe.patch |  71 ++++++
> meta/recipes-core/busybox/busybox/musl.cfg         |  12 +
> meta/recipes-core/busybox/busybox_1.24.1.bb        |   2 +
> meta/recipes-core/gettext/gettext_0.16.1.bb        |   5 +
> meta/recipes-core/gettext/gettext_0.19.4.bb        |   4 +
> meta/recipes-core/musl/musl.inc                    |  26 ++
> meta/recipes-core/musl/musl_git.bb                 |  58 +++++
> meta/recipes-core/sysvinit/sysvinit/realpath.patch |  78 ++++++
> meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb     |   1 +
> .../autoconf/autoconf/add_musl_config.patch        |  26 ++
> meta/recipes-devtools/autoconf/autoconf_2.69.bb    |   1 +
> meta/recipes-devtools/gcc/gcc-4.9.inc              |   4 +
> .../gcc/gcc-4.9/0067-gcc-musl-support.patch        | 267 +++++++++++++++++++++
> .../gcc/gcc-4.9/0068-musl-dynamic-linker.patch     | 205 ++++++++++++++++
> .../gcc/gcc-4.9/0069-musl-no-fixincludes.patch     |  21 ++
> .../gcc/gcc-4.9/0070-libstdc-musl.patch            |  32 +++
> meta/recipes-devtools/gcc/gcc-5.2.inc              |   4 +
> .../gcc/gcc-5.2/0043-libstdc-musl.patch            |  32 +++
> .../gcc/gcc-5.2/0044-gcc-musl-support.patch        | 267 +++++++++++++++++++++
> .../gcc/gcc-5.2/0045-musl-dynamic-linker.patch     | 198 +++++++++++++++
> .../gcc/gcc-5.2/0046-musl-no-fixincludes.patch     |  22 ++
> meta/recipes-devtools/gdb/gdb.inc                  |   1 +
> ...0001-Use-exported-definitions-of-SIGRTMIN.patch |  54 +++++
> .../mtd/mtd-utils/0001-Fix-build-with-musl.patch   |  53 ++++
> ...ibfec-use-standard-C-type-instead-of-u_lo.patch |  56 +++++
> .../mtd/mtd-utils/010-fix-rpmatch.patch            |  24 ++
> meta/recipes-devtools/mtd/mtd-utils_git.bb         |   4 +
> meta/recipes-devtools/mtools/mtools_4.0.18.bb      |   4 +-
> .../squashfs-tools/squashfs-tools/fix-compat.patch |  63 +++++
> .../squashfs-tools/squashfs-tools_git.bb           |   1 +
> ...upport-for-defining-missing-funcitonality.patch |  68 ++++++
> .../pam/libpam/include_paths_header.patch          |  59 +++++
> meta/recipes-extended/pam/libpam_1.2.1.bb          |   5 +-
> meta/recipes-support/attr/attr_2.4.47.bb           |   4 +-
> .../attr/files/dont-use-decl-macros.patch          |  56 +++++
> 38 files changed, 1815 insertions(+), 5 deletions(-)
> create mode 100644 meta/recipes-connectivity/openssl/openssl/configure-musl-target.patch
> create mode 100644 meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch
> create mode 100644 meta/recipes-core/busybox/busybox/musl.cfg
> create mode 100644 meta/recipes-core/musl/musl.inc
> create mode 100644 meta/recipes-core/musl/musl_git.bb
> create mode 100644 meta/recipes-core/sysvinit/sysvinit/realpath.patch
> create mode 100644 meta/recipes-devtools/autoconf/autoconf/add_musl_config.patch
> create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch
> create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch
> create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch
> create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0070-libstdc-musl.patch
> create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch
> create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch
> create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch
> create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch
> create mode 100644 meta/recipes-devtools/gdb/gdb/0001-Use-exported-definitions-of-SIGRTMIN.patch
> create mode 100644 meta/recipes-devtools/mtd/mtd-utils/0001-Fix-build-with-musl.patch
> create mode 100644 meta/recipes-devtools/mtd/mtd-utils/0001-mtd-utils-libfec-use-standard-C-type-instead-of-u_lo.patch
> create mode 100644 meta/recipes-devtools/mtd/mtd-utils/010-fix-rpmatch.patch
> create mode 100644 meta/recipes-devtools/squashfs-tools/squashfs-tools/fix-compat.patch
> create mode 100644 meta/recipes-extended/pam/libpam/0001-Add-support-for-defining-missing-funcitonality.patch
> create mode 100644 meta/recipes-extended/pam/libpam/include_paths_header.patch
> create mode 100644 meta/recipes-support/attr/files/dont-use-decl-macros.patch
> 
> --
> 2.6.3
> 


[-- Attachment #2: Message signed with OpenPGP using GPGMail --]
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[PATCH 01/13] gcc: Add support for building musl configuration

[Khem Raj]

Most of these patches are already in gcc 6.0/master but we still need them for
older gcc, they have been tested in meta-musl for quite some time

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-devtools/gcc/gcc-4.9.inc              |   4 +
 .../gcc/gcc-4.9/0066-libstdc-musl.patch            |  32 +++
 .../gcc/gcc-4.9/0067-gcc-musl-support.patch        | 267 +++++++++++++++++++++
 .../gcc/gcc-4.9/0068-musl-dynamic-linker.patch     | 205 ++++++++++++++++
 .../gcc/gcc-4.9/0069-musl-no-fixincludes.patch     |  21 ++
 meta/recipes-devtools/gcc/gcc-5.2.inc              |   4 +
 .../gcc/gcc-5.2/0043-libstdc-musl.patch            |  32 +++
 .../gcc/gcc-5.2/0044-gcc-musl-support.patch        | 267 +++++++++++++++++++++
 .../gcc/gcc-5.2/0045-musl-dynamic-linker.patch     | 198 +++++++++++++++
 .../gcc/gcc-5.2/0046-musl-no-fixincludes.patch     |  22 ++
 10 files changed, 1052 insertions(+)
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0066-libstdc-musl.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch

diff --git a/meta/recipes-devtools/gcc/gcc-4.9.inc b/meta/recipes-devtools/gcc/gcc-4.9.inc
index 95b553c..3327b94 100644
--- a/meta/recipes-devtools/gcc/gcc-4.9.inc
+++ b/meta/recipes-devtools/gcc/gcc-4.9.inc
@@ -81,6 +81,10 @@ SRC_URI = "\
     file://0063-nativesdk-gcc-support.patch \
     file://0064-handle-target-sysroot-multilib.patch \
     file://0065-gcc-483-universal-initializer-no-warning.patch \
+    file://0066-libstdc-musl.patch \
+    file://0067-gcc-musl-support.patch \
+    file://0068-musl-dynamic-linker.patch \
+    file://0069-musl-no-fixincludes.patch \
 "
 SRC_URI[md5sum] = "6f831b4d251872736e8e9cc09746f327"
 SRC_URI[sha256sum] = "2332b2a5a321b57508b9031354a8503af6fdfb868b8c1748d33028d100a8b67e"
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0066-libstdc-musl.patch b/meta/recipes-devtools/gcc/gcc-4.9/0066-libstdc-musl.patch
new file mode 100644
index 0000000..048e481
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0066-libstdc-musl.patch
@@ -0,0 +1,32 @@
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: gcc-4.9-20140316/libstdc++-v3/configure.host
+===================================================================
+--- gcc-4.9-20140316.orig/libstdc++-v3/configure.host	2014-03-26 01:12:19.466008193 -0700
++++ gcc-4.9-20140316/libstdc++-v3/configure.host	2014-03-26 01:43:48.222684357 -0700
+@@ -264,14 +264,24 @@
+     os_include_dir="os/bsd/freebsd"
+     ;;
+   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++    # check for musl by target
++    case "${host_os}" in
++      *-musl*)
++        os_include_dir="os/generic"
++        ;;
++      *)
+     if [ "$uclibc" = "yes" ]; then
+       os_include_dir="os/uclibc"
+     elif [ "$bionic" = "yes" ]; then
+       os_include_dir="os/bionic"
++    elif [ "$musl" = "yes" ]; then
++      os_include_dir="os/generic"
+     else
+       os_include_dir="os/gnu-linux"
+     fi
+     ;;
++    esac
++    ;;
+   hpux*)
+     os_include_dir="os/hpux"
+     ;;
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch b/meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch
new file mode 100644
index 0000000..9a0b5ad
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch
@@ -0,0 +1,267 @@
+# HG changeset patch
+# Parent e5b4564f249f8634194bdabef4b3057d0e54ee97
+Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
+Upstream-Status: backport [partial]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+
+Index: gcc-4.9.0/gcc/config.gcc
+===================================================================
+--- gcc-4.9.0.orig/gcc/config.gcc	2014-04-22 22:44:17.153567150 -0700
++++ gcc-4.9.0/gcc/config.gcc	2014-04-23 23:54:31.427357051 -0700
+@@ -594,7 +594,7 @@
+ esac
+ 
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+ 
+ # 32-bit x86 processors supported by --with-arch=.  Each processor
+ # MUST be separated by exactly one space.
+@@ -719,6 +719,9 @@
+     *-*-*uclibc*)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+       ;;
++    *-*-*musl*)
++      tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++      ;;
+     *)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+       ;;
+@@ -2328,6 +2331,11 @@
+ 	    powerpc*-*-linux*paired*)
+ 		tm_file="${tm_file} rs6000/750cl.h" ;;
+ 	esac
++        case ${target} in
++	    *-linux*-musl*)
++		enable_secureplt=yes ;;
++	esac
++
+ 	if test x${enable_secureplt} = xyes; then
+ 		tm_file="rs6000/secureplt.h ${tm_file}"
+ 	fi
+Index: gcc-4.9.0/gcc/config/linux.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/linux.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/linux.h	2014-04-24 00:11:29.034028895 -0700
+@@ -32,10 +32,12 @@
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS()			\
+@@ -53,18 +55,21 @@
+    uClibc or Bionic is the default C library and whether
+    -muclibc or -mglibc or -mbionic has been passed to change the default.  */
+ 
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3)	\
+-  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4)	\
++  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+ 
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -84,16 +89,16 @@
+ 
+ #define GNU_USER_DYNAMIC_LINKER						\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,	\
+-			 BIONIC_DYNAMIC_LINKER)
++			 BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+-			 BIONIC_DYNAMIC_LINKER32)
++			 BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+-			 BIONIC_DYNAMIC_LINKER64)
++			 BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+-			 BIONIC_DYNAMIC_LINKERX32)
++			 BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+ 
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+@@ -127,3 +132,74 @@
+ # define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function
+ 
+ #endif
++
++/* musl avoids problematic includes by rearranging the include directories.
++ * Unfortunately, this is mostly duplicated from cppdefault.c */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP			\
++    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },		\
++    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },		\
++    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS			\
++    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL			\
++    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 },	\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS				\
++  {							\
++    INCLUDE_DEFAULTS_MUSL_GPP				\
++    INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    INCLUDE_DEFAULTS_MUSL_CROSS				\
++    INCLUDE_DEFAULTS_MUSL_TOOL				\
++    INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 },		\
++    { 0, 0, 0, 0, 0, 0 }				\
++  }
++#endif
+Index: gcc-4.9.0/gcc/config/linux.opt
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/linux.opt	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/linux.opt	2014-04-22 22:44:17.280233817 -0700
+@@ -30,3 +30,7 @@
+ muclibc
+ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Use musl C library
+Index: gcc-4.9.0/gcc/ginclude/stddef.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/ginclude/stddef.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/ginclude/stddef.h	2014-04-22 22:44:17.280233817 -0700
+@@ -181,6 +181,7 @@
+ #ifndef _GCC_SIZE_T
+ #ifndef _SIZET_
+ #ifndef __size_t
++#ifndef __DEFINED_size_t /* musl */
+ #define __size_t__	/* BeOS */
+ #define __SIZE_T__	/* Cray Unicos/Mk */
+ #define _SIZE_T
+@@ -197,6 +198,7 @@
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
+   || defined(__FreeBSD_kernel__)
+ /* __size_t is a typedef on FreeBSD 5, must not trash it. */
+@@ -214,6 +216,7 @@
+ typedef long ssize_t;
+ #endif /* __BEOS__ */
+ #endif /* !(defined (__GNUG__) && defined (size_t)) */
++#endif /* __DEFINED_size_t */
+ #endif /* __size_t */
+ #endif /* _SIZET_ */
+ #endif /* _GCC_SIZE_T */
+Index: gcc-4.9.0/gcc/config/rs6000/secureplt.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/rs6000/secureplt.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/rs6000/secureplt.h	2014-04-23 23:55:15.114024175 -0700
+@@ -18,3 +18,4 @@
+ <http://www.gnu.org/licenses/>.  */
+ 
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+Index: gcc-4.9.0/gcc/config/rs6000/sysv4.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/rs6000/sysv4.h	2014-04-23 23:52:13.854023015 -0700
++++ gcc-4.9.0/gcc/config/rs6000/sysv4.h	2014-04-24 00:10:55.550695334 -0700
+@@ -538,6 +538,10 @@
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
+ 
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
++
+ /* Pass -G xxx to the compiler.  */
+ #define	CC1_SPEC "%{G*} %(cc1_cpu)" \
+ "%{meabi: %{!mcall-*: -mcall-sysv }} \
+@@ -585,7 +589,8 @@
+ 
+ /* Override the default target of the linker.  */
+ #define	LINK_TARGET_SPEC \
+-  ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
++  ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
++  "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+ 
+ /* Any specific OS flags.  */
+ #define LINK_OS_SPEC "\
+@@ -894,6 +899,7 @@
+   { "link_os_openbsd",		LINK_OS_OPENBSD_SPEC },			\
+   { "link_os_default",		LINK_OS_DEFAULT_SPEC },			\
+   { "cc1_secure_plt_default",	CC1_SECURE_PLT_DEFAULT_SPEC },		\
++  { "link_secure_plt_default",	LINK_SECURE_PLT_DEFAULT_SPEC },		\
+   { "cpp_os_ads",		CPP_OS_ADS_SPEC },			\
+   { "cpp_os_yellowknife",	CPP_OS_YELLOWKNIFE_SPEC },		\
+   { "cpp_os_mvme",		CPP_OS_MVME_SPEC },			\
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch b/meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch
new file mode 100644
index 0000000..605ac66
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch
@@ -0,0 +1,205 @@
+# HG changeset patch
+# Parent 6738fd6f6fcc2a72f2ba527bda3325642af26885
+Support for arm-linux-musl.
+Upstream-Status: Backport [partial]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+
+Index: gcc-4.9.2/gcc/config/arm/linux-eabi.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/arm/linux-eabi.h
++++ gcc-4.9.2/gcc/config/arm/linux-eabi.h
+@@ -81,6 +81,23 @@
+ #undef TARGET_FIX_V4BX_SPEC
+ #define TARGET_FIX_V4BX_SPEC "%{mcpu=arm8|mcpu=arm810|mcpu=strongarm*|march=armv4: --fix-v4bx}"
+ 
++/* For ARM musl currently supports four dynamic linkers:
++   - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
++   - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
++   - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
++   - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
++   musl does not support the legacy OABI mode.
++   All the dynamic linkers live in /lib.
++   We default to soft-float, EL. */
++#undef  MUSL_DYNAMIC_LINKER
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
++#endif
++#define MUSL_DYNAMIC_LINKER \
++  SYSTEMLIBS_DIR "ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
+Index: gcc-4.9.2/libitm/config/arm/hwcap.cc
+===================================================================
+--- gcc-4.9.2.orig/libitm/config/arm/hwcap.cc
++++ gcc-4.9.2/libitm/config/arm/hwcap.cc
+@@ -40,7 +40,11 @@ int GTM_hwcap HIDDEN = 0
+ 
+ #ifdef __linux__
+ #include <unistd.h>
++#ifdef __GLIBC__
+ #include <sys/fcntl.h>
++#else
++#include <fcntl.h>
++#endif
+ #include <elf.h>
+ 
+ static void __attribute__((constructor))
+Index: gcc-4.9.2/gcc/config/i386/linux.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/i386/linux.h
++++ gcc-4.9.2/gcc/config/i386/linux.h
+@@ -21,3 +21,4 @@ along with GCC; see the file COPYING3.
+ 
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-musl-i386.so.1"
+Index: gcc-4.9.2/gcc/config/i386/linux64.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/i386/linux64.h
++++ gcc-4.9.2/gcc/config/i386/linux64.h
+@@ -30,3 +30,8 @@ see the files COPYING3 and COPYING.RUNTI
+ #define GLIBC_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 SYSTEMLIBS_DIR "ld-linux-x32.so.2"
++
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 SYSTEMLIBS_DIR "ld-musl-x32.so.1"
++
+Index: gcc-4.9.2/gcc/config/mips/linux.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/mips/linux.h
++++ gcc-4.9.2/gcc/config/mips/linux.h
+@@ -23,3 +23,6 @@ along with GCC; see the file COPYING3.
+ #undef UCLIBC_DYNAMIC_LINKER
+ #define UCLIBC_DYNAMIC_LINKER \
+   "%{mnan=2008:" SYSTEMLIBS_DIR "ld-uClibc-mipsn8.so.0;:" SYSTEMLIBS_DIR "ld-uClibc.so.0}"
++
++#define MUSL_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++
+Index: gcc-4.9.2/gcc/config/mips/linux64.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/mips/linux64.h
++++ gcc-4.9.2/gcc/config/mips/linux64.h
+@@ -39,6 +39,11 @@ along with GCC; see the file COPYING3.
+   "%{mnan=2008:" SYSTEMLIBS_DIR "ld-uClibc-mipsn8.so.0;:" SYSTEMLIBS_DIR "ld-uClibc.so.0}"
+ 
+ #define BIONIC_DYNAMIC_LINKERN32 "/system/bin/linker32"
++
++#define MUSL_DYNAMIC_LINKERN32 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++
+ #define GNU_USER_DYNAMIC_LINKERN32 \
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32, \
+-			 BIONIC_DYNAMIC_LINKERN32)
++			 BIONIC_DYNAMIC_LINKERN32, MUSL_DYNAMIC_LINKERN32)
+Index: gcc-4.9.2/gcc/config/rs6000/linux64.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/rs6000/linux64.h
++++ gcc-4.9.2/gcc/config/rs6000/linux64.h
+@@ -375,17 +375,22 @@ extern int dot_symbols;
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-powerpc.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-powerpc64.so.1"
++
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ 
+ #undef  DEFAULT_ASM_ENDIAN
+ #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+Index: gcc-4.9.2/gcc/config/rs6000/sysv4.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/rs6000/sysv4.h
++++ gcc-4.9.2/gcc/config/rs6000/sysv4.h
+@@ -768,15 +768,19 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ 
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
++
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ 
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+   %{rdynamic:-export-dynamic} \
+Index: gcc-4.9.2/libitm/config/linux/x86/tls.h
+===================================================================
+--- gcc-4.9.2.orig/libitm/config/linux/x86/tls.h
++++ gcc-4.9.2/libitm/config/linux/x86/tls.h
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+    GLIBC has reserved words 10 through 13 for TM.  */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+ 
+ #include "config/generic/tls.h"
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+ 
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@ static inline void set_abi_disp(struct a
+ 
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+ 
+ #endif // LIBITM_X86_TLS_H
+Index: gcc-4.9.2/gcc/config/aarch64/aarch64-linux.h
+===================================================================
+--- gcc-4.9.2.orig/gcc/config/aarch64/aarch64-linux.h
++++ gcc-4.9.2/gcc/config/aarch64/aarch64-linux.h
+@@ -25,6 +25,8 @@
+ 
+ #define CPP_SPEC "%{pthread:-D_REENTRANT}"
+ 
++#define MUSL_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-musl-aarch64.so.1"
++
+ #define LINUX_TARGET_LINK_SPEC  "%{h*}		\
+    %{static:-Bstatic}				\
+    %{shared:-shared}				\
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch b/meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch
new file mode 100644
index 0000000..e2b18a4
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch
@@ -0,0 +1,21 @@
+# HG changeset patch
+# Parent 600a8a422ccaf5627ad1f5a138e7398df2b9e9d8
+Get rid of ever-broken fixincludes on musl.
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+
+Index: gcc-4.9-20140316/fixincludes/mkfixinc.sh
+===================================================================
+--- gcc-4.9-20140316.orig/fixincludes/mkfixinc.sh
++++ gcc-4.9-20140316/fixincludes/mkfixinc.sh
+@@ -19,7 +19,8 @@ case $machine in
+     powerpc-*-eabi*    | \
+     powerpc-*-rtems*   | \
+     powerpcle-*-eabisim* | \
+-    powerpcle-*-eabi* )
++    powerpcle-*-eabi* | \
++    *-musl* )
+ 	#  IF there is no include fixing,
+ 	#  THEN create a no-op fixer and exit
+ 	(echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
diff --git a/meta/recipes-devtools/gcc/gcc-5.2.inc b/meta/recipes-devtools/gcc/gcc-5.2.inc
index a6b385a..af9d887 100644
--- a/meta/recipes-devtools/gcc/gcc-5.2.inc
+++ b/meta/recipes-devtools/gcc/gcc-5.2.inc
@@ -74,6 +74,10 @@ SRC_URI = "\
            file://0040-nativesdk-gcc-support.patch \
            file://0041-handle-target-sysroot-multilib.patch \
            file://0042-cxxflags-for-build.patch \
+           file://0043-libstdc-musl.patch \
+           file://0044-gcc-musl-support.patch \
+           file://0045-musl-dynamic-linker.patch \
+           file://0046-musl-no-fixincludes.patch \
           "
 
 BACKPORTS = ""
diff --git a/meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch b/meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch
new file mode 100644
index 0000000..048e481
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch
@@ -0,0 +1,32 @@
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: gcc-4.9-20140316/libstdc++-v3/configure.host
+===================================================================
+--- gcc-4.9-20140316.orig/libstdc++-v3/configure.host	2014-03-26 01:12:19.466008193 -0700
++++ gcc-4.9-20140316/libstdc++-v3/configure.host	2014-03-26 01:43:48.222684357 -0700
+@@ -264,14 +264,24 @@
+     os_include_dir="os/bsd/freebsd"
+     ;;
+   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++    # check for musl by target
++    case "${host_os}" in
++      *-musl*)
++        os_include_dir="os/generic"
++        ;;
++      *)
+     if [ "$uclibc" = "yes" ]; then
+       os_include_dir="os/uclibc"
+     elif [ "$bionic" = "yes" ]; then
+       os_include_dir="os/bionic"
++    elif [ "$musl" = "yes" ]; then
++      os_include_dir="os/generic"
+     else
+       os_include_dir="os/gnu-linux"
+     fi
+     ;;
++    esac
++    ;;
+   hpux*)
+     os_include_dir="os/hpux"
+     ;;
diff --git a/meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch b/meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch
new file mode 100644
index 0000000..4d1ab87
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch
@@ -0,0 +1,267 @@
+# HG changeset patch
+# Parent e5b4564f249f8634194bdabef4b3057d0e54ee97
+Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
+
+Upstream-Status: Backport [partial]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: gcc-4.9.0/gcc/config.gcc
+===================================================================
+--- gcc-4.9.0.orig/gcc/config.gcc	2014-04-22 22:44:17.153567150 -0700
++++ gcc-4.9.0/gcc/config.gcc	2014-04-23 23:54:31.427357051 -0700
+@@ -594,7 +594,7 @@
+ esac
+ 
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+ 
+ # 32-bit x86 processors supported by --with-arch=.  Each processor
+ # MUST be separated by exactly one space.
+@@ -719,6 +719,9 @@
+     *-*-*uclibc*)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+       ;;
++    *-*-*musl*)
++      tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++      ;;
+     *)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+       ;;
+@@ -2328,6 +2331,11 @@
+ 	    powerpc*-*-linux*paired*)
+ 		tm_file="${tm_file} rs6000/750cl.h" ;;
+ 	esac
++        case ${target} in
++	    *-linux*-musl*)
++		enable_secureplt=yes ;;
++	esac
++
+ 	if test x${enable_secureplt} = xyes; then
+ 		tm_file="rs6000/secureplt.h ${tm_file}"
+ 	fi
+Index: gcc-4.9.0/gcc/config/linux.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/linux.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/linux.h	2014-04-24 00:11:29.034028895 -0700
+@@ -32,10 +32,12 @@
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS()			\
+@@ -53,18 +55,21 @@
+    uClibc or Bionic is the default C library and whether
+    -muclibc or -mglibc or -mbionic has been passed to change the default.  */
+ 
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3)	\
+-  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4)	\
++  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+ 
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -84,16 +89,16 @@
+ 
+ #define GNU_USER_DYNAMIC_LINKER						\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,	\
+-			 BIONIC_DYNAMIC_LINKER)
++			 BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+-			 BIONIC_DYNAMIC_LINKER32)
++			 BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+-			 BIONIC_DYNAMIC_LINKER64)
++			 BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+-			 BIONIC_DYNAMIC_LINKERX32)
++			 BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+ 
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+@@ -127,3 +132,74 @@
+ # define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function
+ 
+ #endif
++
++/* musl avoids problematic includes by rearranging the include directories.
++ * Unfortunately, this is mostly duplicated from cppdefault.c */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP			\
++    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },		\
++    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },		\
++    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS			\
++    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL			\
++    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 },	\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS				\
++  {							\
++    INCLUDE_DEFAULTS_MUSL_GPP				\
++    INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    INCLUDE_DEFAULTS_MUSL_CROSS				\
++    INCLUDE_DEFAULTS_MUSL_TOOL				\
++    INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 },		\
++    { 0, 0, 0, 0, 0, 0 }				\
++  }
++#endif
+Index: gcc-4.9.0/gcc/config/linux.opt
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/linux.opt	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/linux.opt	2014-04-22 22:44:17.280233817 -0700
+@@ -30,3 +30,7 @@
+ muclibc
+ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Use musl C library
+Index: gcc-4.9.0/gcc/ginclude/stddef.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/ginclude/stddef.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/ginclude/stddef.h	2014-04-22 22:44:17.280233817 -0700
+@@ -181,6 +181,7 @@
+ #ifndef _GCC_SIZE_T
+ #ifndef _SIZET_
+ #ifndef __size_t
++#ifndef __DEFINED_size_t /* musl */
+ #define __size_t__	/* BeOS */
+ #define __SIZE_T__	/* Cray Unicos/Mk */
+ #define _SIZE_T
+@@ -197,6 +198,7 @@
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
+   || defined(__FreeBSD_kernel__)
+ /* __size_t is a typedef on FreeBSD 5, must not trash it. */
+@@ -214,6 +216,7 @@
+ typedef long ssize_t;
+ #endif /* __BEOS__ */
+ #endif /* !(defined (__GNUG__) && defined (size_t)) */
++#endif /* __DEFINED_size_t */
+ #endif /* __size_t */
+ #endif /* _SIZET_ */
+ #endif /* _GCC_SIZE_T */
+Index: gcc-4.9.0/gcc/config/rs6000/secureplt.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/rs6000/secureplt.h	2014-01-02 14:23:26.000000000 -0800
++++ gcc-4.9.0/gcc/config/rs6000/secureplt.h	2014-04-23 23:55:15.114024175 -0700
+@@ -18,3 +18,4 @@
+ <http://www.gnu.org/licenses/>.  */
+ 
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+Index: gcc-4.9.0/gcc/config/rs6000/sysv4.h
+===================================================================
+--- gcc-4.9.0.orig/gcc/config/rs6000/sysv4.h	2014-04-23 23:52:13.854023015 -0700
++++ gcc-4.9.0/gcc/config/rs6000/sysv4.h	2014-04-24 00:10:55.550695334 -0700
+@@ -538,6 +538,10 @@
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
+ 
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
++
+ /* Pass -G xxx to the compiler.  */
+ #define	CC1_SPEC "%{G*} %(cc1_cpu)" \
+ "%{meabi: %{!mcall-*: -mcall-sysv }} \
+@@ -585,7 +589,8 @@
+ 
+ /* Override the default target of the linker.  */
+ #define	LINK_TARGET_SPEC \
+-  ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
++  ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
++  "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+ 
+ /* Any specific OS flags.  */
+ #define LINK_OS_SPEC "\
+@@ -894,6 +899,7 @@
+   { "link_os_openbsd",		LINK_OS_OPENBSD_SPEC },			\
+   { "link_os_default",		LINK_OS_DEFAULT_SPEC },			\
+   { "cc1_secure_plt_default",	CC1_SECURE_PLT_DEFAULT_SPEC },		\
++  { "link_secure_plt_default",	LINK_SECURE_PLT_DEFAULT_SPEC },		\
+   { "cpp_os_ads",		CPP_OS_ADS_SPEC },			\
+   { "cpp_os_yellowknife",	CPP_OS_YELLOWKNIFE_SPEC },		\
+   { "cpp_os_mvme",		CPP_OS_MVME_SPEC },			\
diff --git a/meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch b/meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch
new file mode 100644
index 0000000..3dadb95
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch
@@ -0,0 +1,198 @@
+# HG changeset patch
+# Parent 6738fd6f6fcc2a72f2ba527bda3325642af26885
+Support for arm-linux-musl.
+
+Upstream-Status: backport [partial]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+
+Index: gcc-5.1.0/gcc/config/arm/linux-eabi.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/arm/linux-eabi.h
++++ gcc-5.1.0/gcc/config/arm/linux-eabi.h
+@@ -81,6 +81,23 @@
+ #undef TARGET_FIX_V4BX_SPEC
+ #define TARGET_FIX_V4BX_SPEC "%{mcpu=arm8|mcpu=arm810|mcpu=strongarm*|march=armv4: --fix-v4bx}"
+ 
++/* For ARM musl currently supports four dynamic linkers:
++   - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
++   - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
++   - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
++   - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
++   musl does not support the legacy OABI mode.
++   All the dynamic linkers live in /lib.
++   We default to soft-float, EL. */
++#undef  MUSL_DYNAMIC_LINKER
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
++#endif
++#define MUSL_DYNAMIC_LINKER \
++  SYSTEMLIBS_DIR "ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
+Index: gcc-5.1.0/libitm/config/arm/hwcap.cc
+===================================================================
+--- gcc-5.1.0.orig/libitm/config/arm/hwcap.cc
++++ gcc-5.1.0/libitm/config/arm/hwcap.cc
+@@ -40,7 +40,11 @@ int GTM_hwcap HIDDEN = 0
+ 
+ #ifdef __linux__
+ #include <unistd.h>
++#ifdef __GLIBC__
+ #include <sys/fcntl.h>
++#else
++#include <fcntl.h>
++#endif
+ #include <elf.h>
+ 
+ static void __attribute__((constructor))
+Index: gcc-5.1.0/gcc/config/i386/linux.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/i386/linux.h
++++ gcc-5.1.0/gcc/config/i386/linux.h
+@@ -21,3 +21,4 @@ along with GCC; see the file COPYING3.
+ 
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-musl-i386.so.1"
+Index: gcc-5.1.0/gcc/config/i386/linux64.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/i386/linux64.h
++++ gcc-5.1.0/gcc/config/i386/linux64.h
+@@ -30,3 +30,8 @@ see the files COPYING3 and COPYING.RUNTI
+ #define GLIBC_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 SYSTEMLIBS_DIR "ld-linux-x32.so.2"
++
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 SYSTEMLIBS_DIR "ld-musl-x32.so.1"
++
+Index: gcc-5.1.0/gcc/config/mips/linux.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/mips/linux.h
++++ gcc-5.1.0/gcc/config/mips/linux.h
+@@ -21,6 +21,10 @@ along with GCC; see the file COPYING3.
+ #define GNU_USER_LINK_EMULATION64 "elf64%{EB:b}%{EL:l}tsmip"
+ #define GNU_USER_LINK_EMULATIONN32 "elf32%{EB:b}%{EL:l}tsmipn32"
+ 
++#define MUSL_DYNAMIC_LINKERN32 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-mips.so.1"
++
+ #define GLIBC_DYNAMIC_LINKER32 \
+   "%{mnan=2008:" SYSTEMLIBS_DIR "ld-linux-mipsn8.so.1;:" SYSTEMLIBS_DIR "ld.so.1}"
+ #define GLIBC_DYNAMIC_LINKER64 \
+@@ -40,4 +44,4 @@ along with GCC; see the file COPYING3.
+ #define BIONIC_DYNAMIC_LINKERN32 "/system/bin/linker32"
+ #define GNU_USER_DYNAMIC_LINKERN32 \
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32, \
+-                         BIONIC_DYNAMIC_LINKERN32)
++                         BIONIC_DYNAMIC_LINKERN32,  MUSL_DYNAMIC_LINKERN32)
+Index: gcc-5.1.0/gcc/config/rs6000/linux64.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/rs6000/linux64.h
++++ gcc-5.1.0/gcc/config/rs6000/linux64.h
+@@ -365,17 +365,22 @@ extern int dot_symbols;
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 SYSTEMLIBS_DIR "ld-musl-powerpc.so.1"
++#define MUSL_DYNAMIC_LINKER64 SYSTEMLIBS_DIR "ld-musl-powerpc64.so.1"
++
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ 
+ #undef  DEFAULT_ASM_ENDIAN
+ #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+Index: gcc-5.1.0/gcc/config/rs6000/sysv4.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/rs6000/sysv4.h
++++ gcc-5.1.0/gcc/config/rs6000/sysv4.h
+@@ -769,15 +769,19 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ 
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
++
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ 
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+   %{rdynamic:-export-dynamic} \
+Index: gcc-5.1.0/libitm/config/linux/x86/tls.h
+===================================================================
+--- gcc-5.1.0.orig/libitm/config/linux/x86/tls.h
++++ gcc-5.1.0/libitm/config/linux/x86/tls.h
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+    GLIBC has reserved words 10 through 13 for TM.  */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+ 
+ #include "config/generic/tls.h"
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+ 
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@ static inline void set_abi_disp(struct a
+ 
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+ 
+ #endif // LIBITM_X86_TLS_H
+Index: gcc-5.1.0/gcc/config/aarch64/aarch64-linux.h
+===================================================================
+--- gcc-5.1.0.orig/gcc/config/aarch64/aarch64-linux.h
++++ gcc-5.1.0/gcc/config/aarch64/aarch64-linux.h
+@@ -22,6 +22,7 @@
+ #define GCC_AARCH64_LINUX_H
+ 
+ #define GLIBC_DYNAMIC_LINKER  SYSTEMLIBS_DIR "ld-linux-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
++#define MUSL_DYNAMIC_LINKER  SYSTEMLIBS_DIR "ld-musl-aarch64.so.1"
+ 
+ #undef  ASAN_CC1_SPEC
+ #define ASAN_CC1_SPEC "%{%:sanitize(address):-funwind-tables}"
diff --git a/meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch b/meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch
new file mode 100644
index 0000000..05fe52f
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch
@@ -0,0 +1,22 @@
+# HG changeset patch
+# Parent 600a8a422ccaf5627ad1f5a138e7398df2b9e9d8
+Get rid of ever-broken fixincludes on musl.
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+
+Index: gcc-4.9-20140316/fixincludes/mkfixinc.sh
+===================================================================
+--- gcc-4.9-20140316.orig/fixincludes/mkfixinc.sh
++++ gcc-4.9-20140316/fixincludes/mkfixinc.sh
+@@ -19,7 +19,8 @@ case $machine in
+     powerpc-*-eabi*    | \
+     powerpc-*-rtems*   | \
+     powerpcle-*-eabisim* | \
+-    powerpcle-*-eabi* )
++    powerpcle-*-eabi* | \
++    *-musl* )
+ 	#  IF there is no include fixing,
+ 	#  THEN create a no-op fixer and exit
+ 	(echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
-- 
2.6.3

[PATCH 00/13] Add musl to OE-Core

[Khem Raj]

This is a mimimal set of changes brought in from meta-musl
to OE-Core, with this set one can build core-image-minimal using musl
by setting

TCLIBC=musl

for all supported architectures, eventually we will bring
more changes to other packages which will enable more complex
image builds and eventually world.


Khem Raj (13):
  gcc: Add support for building musl configuration
  autoconf: Add musl support
  gdb: Fix build with musl
  mtd-utils: Backport and create patches to support musl
  squashfs-tools: Define FNM_EXTMATCH if not defined
  mtools: Use proper glibc override to add glibc packages to
    recommendations
  musl: Add recipe
  sysvinit: Fix build with musl
  gettext: Delete libintl.h and charset.alias
  busybox: Add config for musl
  openssl: Add musl configuration support
  libpam: Fix build with musl
  attr: Add patch to account for use of internal glibc header

 .../openssl/openssl/configure-musl-target.patch    |  27 +++
 .../openssl/openssl/linux-musl-libc-termios.patch  |  19 ++
 .../recipes-connectivity/openssl/openssl_1.0.2d.bb |   2 +
 ...user-use-POSIX-getpwent-instead-of-getpwe.patch |  71 ++++++
 meta/recipes-core/busybox/busybox/musl.cfg         |  12 +
 meta/recipes-core/busybox/busybox_1.23.2.bb        |   2 +
 meta/recipes-core/gettext/gettext_0.16.1.bb        |   5 +
 meta/recipes-core/gettext/gettext_0.19.4.bb        |   4 +
 meta/recipes-core/musl/musl.inc                    |  26 ++
 meta/recipes-core/musl/musl_git.bb                 |  58 +++++
 meta/recipes-core/sysvinit/sysvinit/musl.patch     |  74 ++++++
 meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb     |   1 +
 .../autoconf/autoconf/add_musl_config.patch        |  26 ++
 meta/recipes-devtools/autoconf/autoconf_2.69.bb    |   1 +
 meta/recipes-devtools/gcc/gcc-4.9.inc              |   4 +
 .../gcc/gcc-4.9/0066-libstdc-musl.patch            |  32 +++
 .../gcc/gcc-4.9/0067-gcc-musl-support.patch        | 267 +++++++++++++++++++++
 .../gcc/gcc-4.9/0068-musl-dynamic-linker.patch     | 205 ++++++++++++++++
 .../gcc/gcc-4.9/0069-musl-no-fixincludes.patch     |  21 ++
 meta/recipes-devtools/gcc/gcc-5.2.inc              |   4 +
 .../gcc/gcc-5.2/0043-libstdc-musl.patch            |  32 +++
 .../gcc/gcc-5.2/0044-gcc-musl-support.patch        | 267 +++++++++++++++++++++
 .../gcc/gcc-5.2/0045-musl-dynamic-linker.patch     | 198 +++++++++++++++
 .../gcc/gcc-5.2/0046-musl-no-fixincludes.patch     |  22 ++
 meta/recipes-devtools/gdb/gdb.inc                  |   1 +
 ...0001-Use-exported-definitions-of-SIGRTMIN.patch |  52 ++++
 .../mtd/mtd-utils/0001-Fix-build-with-musl.patch   |  53 ++++
 ...ibfec-use-standard-C-type-instead-of-u_lo.patch |  56 +++++
 .../mtd/mtd-utils/010-fix-rpmatch.patch            |  24 ++
 meta/recipes-devtools/mtd/mtd-utils_git.bb         |   4 +
 meta/recipes-devtools/mtools/mtools_4.0.18.bb      |   4 +-
 .../squashfs-tools/squashfs-tools/fix-compat.patch |  63 +++++
 .../squashfs-tools/squashfs-tools_git.bb           |   1 +
 ...upport-for-defining-missing-funcitonality.patch |  68 ++++++
 .../pam/libpam/include_paths_header.patch          |  59 +++++
 meta/recipes-extended/pam/libpam_1.2.1.bb          |   5 +-
 meta/recipes-support/attr/attr_2.4.47.bb           |   4 +-
 .../attr/files/dont-use-decl-macros.patch          |  44 ++++
 38 files changed, 1814 insertions(+), 4 deletions(-)
 create mode 100644 meta/recipes-connectivity/openssl/openssl/configure-musl-target.patch
 create mode 100644 meta/recipes-connectivity/openssl/openssl/linux-musl-libc-termios.patch
 create mode 100644 meta/recipes-core/busybox/busybox/0001-linedit-deluser-use-POSIX-getpwent-instead-of-getpwe.patch
 create mode 100644 meta/recipes-core/busybox/busybox/musl.cfg
 create mode 100644 meta/recipes-core/musl/musl.inc
 create mode 100644 meta/recipes-core/musl/musl_git.bb
 create mode 100644 meta/recipes-core/sysvinit/sysvinit/musl.patch
 create mode 100644 meta/recipes-devtools/autoconf/autoconf/add_musl_config.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0066-libstdc-musl.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0067-gcc-musl-support.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0068-musl-dynamic-linker.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0069-musl-no-fixincludes.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0043-libstdc-musl.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0044-gcc-musl-support.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0045-musl-dynamic-linker.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0046-musl-no-fixincludes.patch
 create mode 100644 meta/recipes-devtools/gdb/gdb/0001-Use-exported-definitions-of-SIGRTMIN.patch
 create mode 100644 meta/recipes-devtools/mtd/mtd-utils/0001-Fix-build-with-musl.patch
 create mode 100644 meta/recipes-devtools/mtd/mtd-utils/0001-mtd-utils-libfec-use-standard-C-type-instead-of-u_lo.patch
 create mode 100644 meta/recipes-devtools/mtd/mtd-utils/010-fix-rpmatch.patch
 create mode 100644 meta/recipes-devtools/squashfs-tools/squashfs-tools/fix-compat.patch
 create mode 100644 meta/recipes-extended/pam/libpam/0001-Add-support-for-defining-missing-funcitonality.patch
 create mode 100644 meta/recipes-extended/pam/libpam/include_paths_header.patch
 create mode 100644 meta/recipes-support/attr/files/dont-use-decl-macros.patch

-- 
2.6.3

[PATCH 08/13] sysvinit: Fix build with musl

[Khem Raj]

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 meta/recipes-core/sysvinit/sysvinit/musl.patch | 74 ++++++++++++++++++++++++++
 meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb |  1 +
 2 files changed, 75 insertions(+)
 create mode 100644 meta/recipes-core/sysvinit/sysvinit/musl.patch

diff --git a/meta/recipes-core/sysvinit/sysvinit/musl.patch b/meta/recipes-core/sysvinit/sysvinit/musl.patch
new file mode 100644
index 0000000..4789029
--- /dev/null
+++ b/meta/recipes-core/sysvinit/sysvinit/musl.patch
@@ -0,0 +1,74 @@
+Fix build on musl use realpath() API its available on all libcs
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: sysvinit-2.88dsf/src/ifdown.c
+===================================================================
+--- sysvinit-2.88dsf.orig/src/ifdown.c	2010-03-23 07:37:01.000000000 -0700
++++ sysvinit-2.88dsf/src/ifdown.c	2014-04-02 00:43:43.675437029 -0700
+@@ -26,11 +26,11 @@
+ #include <unistd.h>
+ #include <time.h>
+ #include <string.h>
++#include <errno.h>
+ 
+ #include <sys/ioctl.h>
+ #include <sys/socket.h>
+ #include <sys/time.h>
+-#include <sys/errno.h>
+ 
+ #include <net/if.h>
+ #include <netinet/in.h>
+Index: sysvinit-2.88dsf/src/init.c
+===================================================================
+--- sysvinit-2.88dsf.orig/src/init.c	2014-04-02 00:42:10.488770162 -0700
++++ sysvinit-2.88dsf/src/init.c	2014-04-02 00:42:59.432103823 -0700
+@@ -49,6 +49,7 @@
+ #include <utmp.h>
+ #include <ctype.h>
+ #include <stdarg.h>
++#include <sys/ttydefaults.h>
+ #include <sys/syslog.h>
+ #include <sys/time.h>
+ 
+Index: sysvinit-2.88dsf/src/mountpoint.c
+===================================================================
+--- sysvinit-2.88dsf.orig/src/mountpoint.c	2009-09-10 01:28:49.000000000 -0700
++++ sysvinit-2.88dsf/src/mountpoint.c	2014-04-02 00:44:18.248770942 -0700
+@@ -23,6 +23,7 @@
+  *		Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+  */
+ 
++#include <sys/types.h>
+ #include <sys/stat.h>
+ #include <unistd.h>
+ #include <stdlib.h>
+Index: sysvinit-2.88dsf/src/killall5.c
+===================================================================
+--- sysvinit-2.88dsf.orig/src/killall5.c	2014-03-26 00:49:52.982668074 -0700
++++ sysvinit-2.88dsf/src/killall5.c	2014-04-02 00:46:45.838771653 -0700
+@@ -846,9 +846,9 @@
+ 	char *oargv1, *pargv1;
+ 	if ((o->argv0 && p->argv0 && !strcmp(o->argv0,p->argv0))) {
+ 		if (o->argv1 && p->argv1) {
+-			if ((oargv1 = canonicalize_file_name(o->argv1)) == NULL)
++			if ((oargv1 = realpath(o->argv1, NULL)) == NULL)
+ 				oargv1 = strdup(o->argv1);
+-			if ((pargv1 = canonicalize_file_name(p->argv1)) == NULL)
++			if ((pargv1 = realpath(p->argv1, NULL)) == NULL)
+ 				pargv1 = strdup(p->argv1);
+ 			if (! strcmp(oargv1, pargv1)) {
+ 				ret = 1;
+Index: sysvinit-2.88dsf/src/wall.c
+===================================================================
+--- sysvinit-2.88dsf.orig/src/wall.c	2009-11-22 14:05:53.000000000 -0800
++++ sysvinit-2.88dsf/src/wall.c	2014-04-02 00:49:15.258772217 -0700
+@@ -29,6 +29,7 @@
+ #include <unistd.h>
+ #include <pwd.h>
+ #include <syslog.h>
++#include <time.h>
+ #include "init.h"
+ 
+ 
diff --git a/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb b/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb
index 5dfe39e..394fc1a 100644
--- a/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb
+++ b/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb
@@ -20,6 +20,7 @@ SRC_URI = "${SAVANNAH_GNU_MIRROR}/sysvinit/sysvinit-${PV}.tar.bz2 \
            file://bootlogd.init \
            file://01_bootlogd \
 "
+SRC_URI_append_libc-musl = " file://musl.patch "
 
 SRC_URI[md5sum] = "6eda8a97b86e0a6f59dabbf25202aa6f"
 SRC_URI[sha256sum] = "60bbc8c1e1792056e23761d22960b30bb13eccc2cabff8c7310a01f4d5df1519"
-- 
2.6.3

Re: [PATCH 08/13] sysvinit: Fix build with musl

[Phil Blundell]

On Thu, 2015-11-19 at 17:10 +0000, Khem Raj wrote:
> +Fix build on musl use realpath() API its available on all libcs
[...]
> +SRC_URI_append_libc-musl = " file://musl.patch "

If it's available on all libcs, is there any reason why this patch
couldn't be applied unconditionally?

p.