* [Buildroot] [PATCH 1/2] toolchain: add support for the newlib library
@ 2015-09-17 7:21 Chris Wardman
2015-09-17 7:21 ` [Buildroot] [PATCH 2/2] toolchain: Add support for Cortex-M4 processor Chris Wardman
2016-03-08 22:35 ` [Buildroot] [PATCH 1/2] toolchain: add support for the newlib library Arnout Vandecappelle
0 siblings, 2 replies; 5+ messages in thread
From: Chris Wardman @ 2015-09-17 7:21 UTC (permalink / raw)
To: buildroot
This patch adds support to build gcc with the newlib library. This library
will not build against linux, but does enable user to build bare metal images
and other small kernels for processors.
This has been tested against building arm-buildroot-eabi- and tested against
an STM32F4Discovery board with an STM32F407 processor.
Signed-off-by: Chris Wardman <cjwfirmware@vxmdesign.com>
---
package/Makefile.in | 6 +++
package/gcc/gcc-final/gcc-final.mk | 4 ++
package/gcc/gcc.mk | 4 ++
.../0001-newlib-fix-include-install-location.patch | 40 +++++++++++++++++++
package/newlib/Config.in | 5 +++
package/newlib/newlib.mk | 45 ++++++++++++++++++++++
toolchain/Config.in | 6 +++
toolchain/toolchain-buildroot/Config.in | 9 +++++
8 files changed, 119 insertions(+)
create mode 100644 package/newlib/0001-newlib-fix-include-install-location.patch
create mode 100644 package/newlib/Config.in
create mode 100644 package/newlib/newlib.mk
diff --git a/package/Makefile.in b/package/Makefile.in
index 545694f..dedc622 100644
--- a/package/Makefile.in
+++ b/package/Makefile.in
@@ -37,7 +37,11 @@ $(error BR2_TOOLCHAIN_BUILDROOT_VENDOR cannot be 'unknown'. \
endif
# Compute GNU_TARGET_NAME
+ifeq ($(BR2_TOOLCHAIN_NO_OS_TUPLE),y)
+GNU_TARGET_NAME = $(ARCH)-$(TARGET_VENDOR)-$(ABI)
+else
GNU_TARGET_NAME = $(ARCH)-$(TARGET_VENDOR)-$(TARGET_OS)-$(LIBC)$(ABI)
+endif
# FLAT binary format needs uclinux
ifeq ($(BR2_BINFMT_FLAT),y)
@@ -50,6 +54,8 @@ ifeq ($(BR2_TOOLCHAIN_USES_UCLIBC),y)
LIBC = uclibc
else ifeq ($(BR2_TOOLCHAIN_USES_MUSL),y)
LIBC = musl
+else ifeq ($(BR2_TOOLCHAIN_USES_NEWLIB),y)
+LIBC = newlib
else
LIBC = gnu
endif
diff --git a/package/gcc/gcc-final/gcc-final.mk b/package/gcc/gcc-final/gcc-final.mk
index 86b3c78..ba8d644 100644
--- a/package/gcc/gcc-final/gcc-final.mk
+++ b/package/gcc/gcc-final/gcc-final.mk
@@ -72,6 +72,10 @@ else
HOST_GCC_FINAL_CONF_OPTS += --enable-shared
endif
+ifeq ($(BR2_TOOLCHAIN_BUILDROOT_NEWLIB),y)
+HOST_GCC_FINAL_CONF_OPTS += --with-newlib
+endif
+
ifeq ($(BR2_GCC_ENABLE_OPENMP),y)
HOST_GCC_FINAL_CONF_OPTS += --enable-libgomp
else
diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk
index 501fcea..26451d4 100644
--- a/package/gcc/gcc.mk
+++ b/package/gcc/gcc.mk
@@ -100,6 +100,10 @@ HOST_GCC_COMMON_CONF_OPTS = \
HOST_GCC_COMMON_CONF_ENV = \
MAKEINFO=missing
+ifeq ($(BR2_TOOLCHAIN_BUILDROOT_NEWLIB),y)
+HOST_GCC_COMMON_CONF_OPTS += --with-gnu-as
+endif
+
GCC_COMMON_TARGET_CFLAGS = $(TARGET_CFLAGS)
GCC_COMMON_TARGET_CXXFLAGS = $(TARGET_CXXFLAGS)
diff --git a/package/newlib/0001-newlib-fix-include-install-location.patch b/package/newlib/0001-newlib-fix-include-install-location.patch
new file mode 100644
index 0000000..a0b5951
--- /dev/null
+++ b/package/newlib/0001-newlib-fix-include-install-location.patch
@@ -0,0 +1,40 @@
+Newlib fix for the include install location
+
+Newlib normally installs its headers in a directory labled after the target
+like (/usr/arm-buildroot-eabi/include/), but buildroot already creates a
+location for the headers that conflicts with newlib's default settings.
+
+This patch does a minor correction to the path so the headers are installed in
+the proper location.
+
+It should just modify configure.ac, and then buildroot can run the autoconf
+tools, but newlib requires a specific version of the autoconf tools to be run.
+So, this patch modifies both configure and configure.ac since it is a simple
+change, though it is a slight hack.
+
+Signed-off-by: Chris Wardman <cjwfirmware@vxmdesign.com>
+
+diff -uNr newlib-old/configure newlib-new/configure
+--- newlib-old/configure 2014-07-05 17:09:07.000000000 -0400
++++ newlib-new/configure 2015-09-16 13:44:08.814638168 -0400
+@@ -6985,7 +6985,7 @@
+
+ # Some systems (e.g., one of the i386-aix systems the gas testers are
+ # using) don't handle "\$" correctly, so don't use it here.
+-tooldir='${exec_prefix}'/${target_noncanonical}
++tooldir='${exec_prefix}'
+ build_tooldir=${tooldir}
+
+ # Create a .gdbinit file which runs the one in srcdir
+diff -uNr newlib-old/configure.ac newlib-new/configure.ac
+--- newlib-old/configure.ac 2014-07-05 17:09:07.000000000 -0400
++++ newlib-new/configure.ac 2015-09-16 13:44:22.726638079 -0400
+@@ -2414,7 +2414,7 @@
+
+ # Some systems (e.g., one of the i386-aix systems the gas testers are
+ # using) don't handle "\$" correctly, so don't use it here.
+-tooldir='${exec_prefix}'/${target_noncanonical}
++tooldir='${exec_prefix}'
+ build_tooldir=${tooldir}
+
+ # Create a .gdbinit file which runs the one in srcdir
diff --git a/package/newlib/Config.in b/package/newlib/Config.in
new file mode 100644
index 0000000..c801385
--- /dev/null
+++ b/package/newlib/Config.in
@@ -0,0 +1,5 @@
+config BR2_PACKAGE_NEWLIB
+ bool
+ depends on BR2_TOOLCHAIN_USES_NEWLIB
+ default y
+
diff --git a/package/newlib/newlib.mk b/package/newlib/newlib.mk
new file mode 100644
index 0000000..e3ba4df
--- /dev/null
+++ b/package/newlib/newlib.mk
@@ -0,0 +1,45 @@
+################################################################################
+#
+# newlib
+#
+################################################################################
+
+NEWLIB_VERSION = 2.2.0-1
+NEWLIB_SITE = ftp://sourceware.org/pub/newlib
+NEWLIB_LICENSE = MIT
+NEWLIB_LICENSE_FILES = COPYRIGHT
+
+NEWLIB_DEPENDENCIES = host-gcc-initial
+NEWLIB_ADD_TOOLCHAIN_DEPENDENCY = NO
+NEWLIB_INSTALL_STAGING = YES
+NEWLIB_INSTALL_TARGET = NO
+################################################################################
+# So, I've looked into this a bit. The default configure command sets flags
+# which don't work with gcc initial.
+################################################################################
+
+define NEWLIB_CONFIGURE_CMDS
+ (cd $(@D); \
+ $(TARGET_CONFIGURE_OPTS) \
+ CFLAGS="" \
+ CC="" \
+ LDFLAGS="" \
+ ./configure \
+ --target=$(GNU_TARGET_NAME) \
+ --host=$(GNU_HOST_NAME) \
+ --prefix=/usr \
+ --includedir=$(STAGING_DIR)/usr/include \
+ --oldincludedir=$(STAGING_DIR)/usr/include \
+ --with-build-sysroot=$(STAGING_DIR) \
+ --enable-newlib-io-long-long \
+ --enable-newlib-register-fini \
+ --disable-newlib-supplied-syscalls \
+ --disable-nls)
+endef
+
+define NEWLIB_PRE_INSTALL_STAGING_HOOKS
+ mkdir -p $(HOST_DIR)/usr/$(GNU_TARGET_NAME)/lib
+endef
+
+$(eval $(autotools-package))
+
diff --git a/toolchain/Config.in b/toolchain/Config.in
index a851ce4..8b2ab1e 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -28,6 +28,12 @@ config BR2_TOOLCHAIN_USES_MUSL
select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
select BR2_TOOLCHAIN_HAS_THREADS_NPTL
+config BR2_TOOLCHAIN_USES_NEWLIB
+ bool
+
+config BR2_TOOLCHAIN_NO_OS_TUPLE
+ bool
+
choice
prompt "Toolchain type"
help
diff --git a/toolchain/toolchain-buildroot/Config.in b/toolchain/toolchain-buildroot/Config.in
index 13e2b15..d88ff5f 100644
--- a/toolchain/toolchain-buildroot/Config.in
+++ b/toolchain/toolchain-buildroot/Config.in
@@ -94,6 +94,14 @@ config BR2_TOOLCHAIN_BUILDROOT_MUSL
This option selects musl as the C library for the
cross-compilation toolchain.
+config BR2_TOOLCHAIN_BUILDROOT_NEWLIB
+ bool "newlib (experimental)"
+ depends on BR2_arm
+ select BR2_TOOLCHAIN_USES_NEWLIB
+ select BR2_TOOLCHAIN_NO_OS_TUPLE
+ help
+ This will build the newlib library for a toolchain without an OS
+
endchoice
config BR2_TOOLCHAIN_BUILDROOT_LIBC
@@ -104,6 +112,7 @@ config BR2_TOOLCHAIN_BUILDROOT_LIBC
default "glibc" if BR2_TOOLCHAIN_BUILDROOT_EGLIBC
default "glibc" if BR2_TOOLCHAIN_BUILDROOT_GLIBC
default "musl" if BR2_TOOLCHAIN_BUILDROOT_MUSL
+ default "newlib" if BR2_TOOLCHAIN_BUILDROOT_NEWLIB
source "package/uclibc/Config.in"
source "package/glibc/Config.in"
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [Buildroot] [PATCH 2/2] toolchain: Add support for Cortex-M4 processor
2015-09-17 7:21 [Buildroot] [PATCH 1/2] toolchain: add support for the newlib library Chris Wardman
@ 2015-09-17 7:21 ` Chris Wardman
2015-09-17 9:40 ` Douglas RAILLARD
2016-03-08 22:10 ` Arnout Vandecappelle
2016-03-08 22:35 ` [Buildroot] [PATCH 1/2] toolchain: add support for the newlib library Arnout Vandecappelle
1 sibling, 2 replies; 5+ messages in thread
From: Chris Wardman @ 2015-09-17 7:21 UTC (permalink / raw)
To: buildroot
This patch adds support for the Cortex-M4 processor. Cortex-M4 is almost
completely identical to the Cortex-M3 processor. Cortex-M4 uses the same
Thumb2/Thumb instruction set. Not sure if the extra M4 DSP instructions are
currently supported.
Signed-off-by: Chris Wardman <cjwfirmware@vxmdesign.com>
---
arch/Config.in.arm | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/Config.in.arm b/arch/Config.in.arm
index 4d10f4c..5055cb5 100644
--- a/arch/Config.in.arm
+++ b/arch/Config.in.arm
@@ -156,6 +156,11 @@ config BR2_cortex_m3
bool "cortex-M3"
select BR2_ARM_CPU_HAS_THUMB
select BR2_ARM_CPU_HAS_THUMB2
+config BR2_cortex_m4
+ bool "cortex-M4"
+ select BR2_ARM_CPU_HAS_THUMB
+ select BR2_ARM_CPU_HAR_THUMB2
+ select BR2_ARM_CPU_ARMV7M
config BR2_fa526
bool "fa526/626"
select BR2_ARM_CPU_HAS_ARM
@@ -419,6 +424,7 @@ config BR2_GCC_TARGET_CPU
default "cortex-a12" if BR2_cortex_a12
default "cortex-a15" if BR2_cortex_a15
default "cortex-m3" if BR2_cortex_m3
+ default "cortex-m4" if BR2_cortex_m4
default "fa526" if BR2_fa526
default "marvell-pj4" if BR2_pj4
default "strongarm" if BR2_strongarm
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [Buildroot] [PATCH 2/2] toolchain: Add support for Cortex-M4 processor
2015-09-17 7:21 ` [Buildroot] [PATCH 2/2] toolchain: Add support for Cortex-M4 processor Chris Wardman
@ 2015-09-17 9:40 ` Douglas RAILLARD
2016-03-08 22:10 ` Arnout Vandecappelle
1 sibling, 0 replies; 5+ messages in thread
From: Douglas RAILLARD @ 2015-09-17 9:40 UTC (permalink / raw)
To: buildroot
Hi Chris,
On 17/09/2015 09:21, Chris Wardman wrote:
> This patch adds support for the Cortex-M4 processor. Cortex-M4 is almost
> completely identical to the Cortex-M3 processor. Cortex-M4 uses the same
> Thumb2/Thumb instruction set. Not sure if the extra M4 DSP instructions are
> currently supported.
>
> Signed-off-by: Chris Wardman <cjwfirmware@vxmdesign.com>
> ---
> arch/Config.in.arm | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/Config.in.arm b/arch/Config.in.arm
> index 4d10f4c..5055cb5 100644
> --- a/arch/Config.in.arm
> +++ b/arch/Config.in.arm
> @@ -156,6 +156,11 @@ config BR2_cortex_m3
> bool "cortex-M3"
> select BR2_ARM_CPU_HAS_THUMB
> select BR2_ARM_CPU_HAS_THUMB2
> +config BR2_cortex_m4
> + bool "cortex-M4"
> + select BR2_ARM_CPU_HAS_THUMB
It is not clear if selecting BR2_ARM_CPU_HAS_THUMB for Cortex M is
relevant or if this leads to other problems:
http://article.gmane.org/gmane.comp.lib.uclibc.buildroot/126372
> + select BR2_ARM_CPU_HAR_THUMB2
> + select BR2_ARM_CPU_ARMV7M
If adding the BR2_ARM_CPU_ARMV7M option is okay, this could also be used
to preset some options for uClibc-ng.
> config BR2_fa526
> bool "fa526/626"
> select BR2_ARM_CPU_HAS_ARM
> @@ -419,6 +424,7 @@ config BR2_GCC_TARGET_CPU
> default "cortex-a12" if BR2_cortex_a12
> default "cortex-a15" if BR2_cortex_a15
> default "cortex-m3" if BR2_cortex_m3
> + default "cortex-m4" if BR2_cortex_m4
> default "fa526" if BR2_fa526
> default "marvell-pj4" if BR2_pj4
> default "strongarm" if BR2_strongarm
>
Best regards,
Douglas
--
Douglas RAILLARD
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Buildroot] [PATCH 2/2] toolchain: Add support for Cortex-M4 processor
2015-09-17 7:21 ` [Buildroot] [PATCH 2/2] toolchain: Add support for Cortex-M4 processor Chris Wardman
2015-09-17 9:40 ` Douglas RAILLARD
@ 2016-03-08 22:10 ` Arnout Vandecappelle
1 sibling, 0 replies; 5+ messages in thread
From: Arnout Vandecappelle @ 2016-03-08 22:10 UTC (permalink / raw)
To: buildroot
On 09/17/15 09:21, Chris Wardman wrote:
> This patch adds support for the Cortex-M4 processor. Cortex-M4 is almost
> completely identical to the Cortex-M3 processor. Cortex-M4 uses the same
> Thumb2/Thumb instruction set. Not sure if the extra M4 DSP instructions are
> currently supported.
>
> Signed-off-by: Chris Wardman <cjwfirmware@vxmdesign.com>
> ---
> arch/Config.in.arm | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/Config.in.arm b/arch/Config.in.arm
> index 4d10f4c..5055cb5 100644
> --- a/arch/Config.in.arm
> +++ b/arch/Config.in.arm
> @@ -156,6 +156,11 @@ config BR2_cortex_m3
> bool "cortex-M3"
> select BR2_ARM_CPU_HAS_THUMB
> select BR2_ARM_CPU_HAS_THUMB2
> +config BR2_cortex_m4
> + bool "cortex-M4"
> + select BR2_ARM_CPU_HAS_THUMB
> + select BR2_ARM_CPU_HAR_THUMB2
> + select BR2_ARM_CPU_ARMV7M
This symbol doesn't exist yet, but it probably should. Can you add a separate
patch to add that symbol (and select it from cortex_m3)?
Regards,
Arnout
> config BR2_fa526
> bool "fa526/626"
> select BR2_ARM_CPU_HAS_ARM
> @@ -419,6 +424,7 @@ config BR2_GCC_TARGET_CPU
> default "cortex-a12" if BR2_cortex_a12
> default "cortex-a15" if BR2_cortex_a15
> default "cortex-m3" if BR2_cortex_m3
> + default "cortex-m4" if BR2_cortex_m4
> default "fa526" if BR2_fa526
> default "marvell-pj4" if BR2_pj4
> default "strongarm" if BR2_strongarm
>
--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint: 7493 020B C7E3 8618 8DEC 222C 82EB F404 F9AC 0DDF
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Buildroot] [PATCH 1/2] toolchain: add support for the newlib library
2015-09-17 7:21 [Buildroot] [PATCH 1/2] toolchain: add support for the newlib library Chris Wardman
2015-09-17 7:21 ` [Buildroot] [PATCH 2/2] toolchain: Add support for Cortex-M4 processor Chris Wardman
@ 2016-03-08 22:35 ` Arnout Vandecappelle
1 sibling, 0 replies; 5+ messages in thread
From: Arnout Vandecappelle @ 2016-03-08 22:35 UTC (permalink / raw)
To: buildroot
On 09/17/15 09:21, Chris Wardman wrote:
> This patch adds support to build gcc with the newlib library. This library
> will not build against linux, but does enable user to build bare metal images
> and other small kernels for processors.
>
> This has been tested against building arm-buildroot-eabi- and tested against
> an STM32F4Discovery board with an STM32F407 processor.
I would expect that at least some existing libraries would also compile. I
tried a few but nothing works...
As Peter mentioned, all packages, system and filesystems, and probably linux
as well, should be disabled in the config when newlib is selected. Also the
kernel headers selection should be removed.
I've checked with other core developers and there is not a lot of enthusiasmto
include this (as witnessed by the long delay in reviewing this patch). So you'd
need to be very active in pushing this to make it feasible.
>
> Signed-off-by: Chris Wardman <cjwfirmware@vxmdesign.com>
> ---
> package/Makefile.in | 6 +++
> package/gcc/gcc-final/gcc-final.mk | 4 ++
> package/gcc/gcc.mk | 4 ++
> .../0001-newlib-fix-include-install-location.patch | 40 +++++++++++++++++++
> package/newlib/Config.in | 5 +++
> package/newlib/newlib.mk | 45 ++++++++++++++++++++++
> toolchain/Config.in | 6 +++
> toolchain/toolchain-buildroot/Config.in | 9 +++++
> 8 files changed, 119 insertions(+)
> create mode 100644 package/newlib/0001-newlib-fix-include-install-location.patch
> create mode 100644 package/newlib/Config.in
> create mode 100644 package/newlib/newlib.mk
>
> diff --git a/package/Makefile.in b/package/Makefile.in
> index 545694f..dedc622 100644
> --- a/package/Makefile.in
> +++ b/package/Makefile.in
> @@ -37,7 +37,11 @@ $(error BR2_TOOLCHAIN_BUILDROOT_VENDOR cannot be 'unknown'. \
> endif
>
> # Compute GNU_TARGET_NAME
> +ifeq ($(BR2_TOOLCHAIN_NO_OS_TUPLE),y)
> +GNU_TARGET_NAME = $(ARCH)-$(TARGET_VENDOR)-$(ABI)
> +else
> GNU_TARGET_NAME = $(ARCH)-$(TARGET_VENDOR)-$(TARGET_OS)-$(LIBC)$(ABI)
> +endif
>
> # FLAT binary format needs uclinux
> ifeq ($(BR2_BINFMT_FLAT),y)
> @@ -50,6 +54,8 @@ ifeq ($(BR2_TOOLCHAIN_USES_UCLIBC),y)
> LIBC = uclibc
> else ifeq ($(BR2_TOOLCHAIN_USES_MUSL),y)
> LIBC = musl
> +else ifeq ($(BR2_TOOLCHAIN_USES_NEWLIB),y)
> +LIBC = newlib
> else
> LIBC = gnu
> endif
> diff --git a/package/gcc/gcc-final/gcc-final.mk b/package/gcc/gcc-final/gcc-final.mk
> index 86b3c78..ba8d644 100644
> --- a/package/gcc/gcc-final/gcc-final.mk
> +++ b/package/gcc/gcc-final/gcc-final.mk
> @@ -72,6 +72,10 @@ else
> HOST_GCC_FINAL_CONF_OPTS += --enable-shared
> endif
>
> +ifeq ($(BR2_TOOLCHAIN_BUILDROOT_NEWLIB),y)
> +HOST_GCC_FINAL_CONF_OPTS += --with-newlib
> +endif
> +
> ifeq ($(BR2_GCC_ENABLE_OPENMP),y)
> HOST_GCC_FINAL_CONF_OPTS += --enable-libgomp
> else
> diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk
> index 501fcea..26451d4 100644
> --- a/package/gcc/gcc.mk
> +++ b/package/gcc/gcc.mk
> @@ -100,6 +100,10 @@ HOST_GCC_COMMON_CONF_OPTS = \
> HOST_GCC_COMMON_CONF_ENV = \
> MAKEINFO=missing
>
> +ifeq ($(BR2_TOOLCHAIN_BUILDROOT_NEWLIB),y)
There should be a comment here to explain why this is needed.
> +HOST_GCC_COMMON_CONF_OPTS += --with-gnu-as
> +endif
> +
> GCC_COMMON_TARGET_CFLAGS = $(TARGET_CFLAGS)
> GCC_COMMON_TARGET_CXXFLAGS = $(TARGET_CXXFLAGS)
>
> diff --git a/package/newlib/0001-newlib-fix-include-install-location.patch b/package/newlib/0001-newlib-fix-include-install-location.patch
> new file mode 100644
> index 0000000..a0b5951
> --- /dev/null
> +++ b/package/newlib/0001-newlib-fix-include-install-location.patch
> @@ -0,0 +1,40 @@
> +Newlib fix for the include install location
> +
> +Newlib normally installs its headers in a directory labled after the target
> +like (/usr/arm-buildroot-eabi/include/), but buildroot already creates a
> +location for the headers that conflicts with newlib's default settings.
> +
> +This patch does a minor correction to the path so the headers are installed in
> +the proper location.
> +
> +It should just modify configure.ac, and then buildroot can run the autoconf
> +tools, but newlib requires a specific version of the autoconf tools to be run.
> +So, this patch modifies both configure and configure.ac since it is a simple
> +change, though it is a slight hack.
> +
> +Signed-off-by: Chris Wardman <cjwfirmware@vxmdesign.com>
> +
> +diff -uNr newlib-old/configure newlib-new/configure
> +--- newlib-old/configure 2014-07-05 17:09:07.000000000 -0400
> ++++ newlib-new/configure 2015-09-16 13:44:08.814638168 -0400
> +@@ -6985,7 +6985,7 @@
> +
> + # Some systems (e.g., one of the i386-aix systems the gas testers are
> + # using) don't handle "\$" correctly, so don't use it here.
> +-tooldir='${exec_prefix}'/${target_noncanonical}
> ++tooldir='${exec_prefix}'
> + build_tooldir=${tooldir}
> +
> + # Create a .gdbinit file which runs the one in srcdir
> +diff -uNr newlib-old/configure.ac newlib-new/configure.ac
> +--- newlib-old/configure.ac 2014-07-05 17:09:07.000000000 -0400
> ++++ newlib-new/configure.ac 2015-09-16 13:44:22.726638079 -0400
> +@@ -2414,7 +2414,7 @@
> +
> + # Some systems (e.g., one of the i386-aix systems the gas testers are
> + # using) don't handle "\$" correctly, so don't use it here.
> +-tooldir='${exec_prefix}'/${target_noncanonical}
> ++tooldir='${exec_prefix}'
> + build_tooldir=${tooldir}
> +
> + # Create a .gdbinit file which runs the one in srcdir
> diff --git a/package/newlib/Config.in b/package/newlib/Config.in
> new file mode 100644
> index 0000000..c801385
> --- /dev/null
> +++ b/package/newlib/Config.in
> @@ -0,0 +1,5 @@
> +config BR2_PACKAGE_NEWLIB
> + bool
> + depends on BR2_TOOLCHAIN_USES_NEWLIB
> + default y
> +
> diff --git a/package/newlib/newlib.mk b/package/newlib/newlib.mk
> new file mode 100644
> index 0000000..e3ba4df
> --- /dev/null
> +++ b/package/newlib/newlib.mk
> @@ -0,0 +1,45 @@
> +################################################################################
> +#
> +# newlib
> +#
> +################################################################################
> +
> +NEWLIB_VERSION = 2.2.0-1
> +NEWLIB_SITE = ftp://sourceware.org/pub/newlib
> +NEWLIB_LICENSE = MIT
> +NEWLIB_LICENSE_FILES = COPYRIGHT
> +
> +NEWLIB_DEPENDENCIES = host-gcc-initial
> +NEWLIB_ADD_TOOLCHAIN_DEPENDENCY = NO
> +NEWLIB_INSTALL_STAGING = YES
> +NEWLIB_INSTALL_TARGET = NO
> +################################################################################
> +# So, I've looked into this a bit. The default configure command sets flags
> +# which don't work with gcc initial.
Which flag in particular? Any flag which is not appropriate should be possible
to override in NEWLIB_CONF_OPTS.
> +################################################################################
> +
> +define NEWLIB_CONFIGURE_CMDS
> + (cd $(@D); \
> + $(TARGET_CONFIGURE_OPTS) \
> + CFLAGS="" \
> + CC="" \
> + LDFLAGS="" \
> + ./configure \
> + --target=$(GNU_TARGET_NAME) \
> + --host=$(GNU_HOST_NAME) \
> + --prefix=/usr \
> + --includedir=$(STAGING_DIR)/usr/include \
> + --oldincludedir=$(STAGING_DIR)/usr/include \
> + --with-build-sysroot=$(STAGING_DIR) \
> + --enable-newlib-io-long-long \
> + --enable-newlib-register-fini \
> + --disable-newlib-supplied-syscalls \
> + --disable-nls)
> +endef
> +
> +define NEWLIB_PRE_INSTALL_STAGING_HOOKS
> + mkdir -p $(HOST_DIR)/usr/$(GNU_TARGET_NAME)/lib
Why is this needed? Add a comment if it really is needed.
> +endef
> +
> +$(eval $(autotools-package))
> +
Spurious empty line.
Regards,
Arnout
> diff --git a/toolchain/Config.in b/toolchain/Config.in
> index a851ce4..8b2ab1e 100644
> --- a/toolchain/Config.in
> +++ b/toolchain/Config.in
> @@ -28,6 +28,12 @@ config BR2_TOOLCHAIN_USES_MUSL
> select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
> select BR2_TOOLCHAIN_HAS_THREADS_NPTL
>
> +config BR2_TOOLCHAIN_USES_NEWLIB
> + bool
> +
> +config BR2_TOOLCHAIN_NO_OS_TUPLE
> + bool
> +
> choice
> prompt "Toolchain type"
> help
> diff --git a/toolchain/toolchain-buildroot/Config.in b/toolchain/toolchain-buildroot/Config.in
> index 13e2b15..d88ff5f 100644
> --- a/toolchain/toolchain-buildroot/Config.in
> +++ b/toolchain/toolchain-buildroot/Config.in
> @@ -94,6 +94,14 @@ config BR2_TOOLCHAIN_BUILDROOT_MUSL
> This option selects musl as the C library for the
> cross-compilation toolchain.
>
> +config BR2_TOOLCHAIN_BUILDROOT_NEWLIB
> + bool "newlib (experimental)"
> + depends on BR2_arm
> + select BR2_TOOLCHAIN_USES_NEWLIB
> + select BR2_TOOLCHAIN_NO_OS_TUPLE
> + help
> + This will build the newlib library for a toolchain without an OS
> +
> endchoice
>
> config BR2_TOOLCHAIN_BUILDROOT_LIBC
> @@ -104,6 +112,7 @@ config BR2_TOOLCHAIN_BUILDROOT_LIBC
> default "glibc" if BR2_TOOLCHAIN_BUILDROOT_EGLIBC
> default "glibc" if BR2_TOOLCHAIN_BUILDROOT_GLIBC
> default "musl" if BR2_TOOLCHAIN_BUILDROOT_MUSL
> + default "newlib" if BR2_TOOLCHAIN_BUILDROOT_NEWLIB
>
> source "package/uclibc/Config.in"
> source "package/glibc/Config.in"
>
--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint: 7493 020B C7E3 8618 8DEC 222C 82EB F404 F9AC 0DDF
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2016-03-08 22:35 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-09-17 7:21 [Buildroot] [PATCH 1/2] toolchain: add support for the newlib library Chris Wardman
2015-09-17 7:21 ` [Buildroot] [PATCH 2/2] toolchain: Add support for Cortex-M4 processor Chris Wardman
2015-09-17 9:40 ` Douglas RAILLARD
2016-03-08 22:10 ` Arnout Vandecappelle
2016-03-08 22:35 ` [Buildroot] [PATCH 1/2] toolchain: add support for the newlib library Arnout Vandecappelle
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox