[meta-oe][PATCH v2] gcc-6.2: Add fix for missing no-PIE flags

[Stephen Arnold <sarnold@vctlabs.com>]

From: Stephen Arnold <stephen.arnold42@gmail.com>

Fixes build on hardened PAX host with gcc-5 (linker error on relocs).
Completes no-PIE config by adding to ALL_* flags variables.
Borrowed from Gentoo gcc patches, tested on 2 hardened amd64 hosts.

Upstream-Status: Inappropriate [configuration]

Commited by: Gentoo Toolchain Project <toolchain@gentoo.org>
Signed-off-by: Stephen Arnold <stephen.arnold42@gmail.com>
---
 meta/recipes-devtools/gcc/gcc-6.2.inc                   |  1 +
 .../gcc/gcc-6.2/0054_all_nopie-all-flags.patch          | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 meta/recipes-devtools/gcc/gcc-6.2/0054_all_nopie-all-flags.patch

diff --git a/meta/recipes-devtools/gcc/gcc-6.2.inc b/meta/recipes-devtools/gcc/gcc-6.2.inc
index b118995e1d..1a50d3a0d4 100644
--- a/meta/recipes-devtools/gcc/gcc-6.2.inc
+++ b/meta/recipes-devtools/gcc/gcc-6.2.inc
@@ -78,6 +78,7 @@ SRC_URI = "\
            file://0045-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch \
            file://0046-Link-libgcc-using-LDFLAGS-not-just-SHLIB_LDFLAGS.patch \
            file://0047-libgcc_s-Use-alias-for-__cpu_indicator_init-instead-.patch \
+           file://0054_all_nopie-all-flags.patch \
            ${BACKPORTS} \
 "
 BACKPORTS = ""
diff --git a/meta/recipes-devtools/gcc/gcc-6.2/0054_all_nopie-all-flags.patch b/meta/recipes-devtools/gcc/gcc-6.2/0054_all_nopie-all-flags.patch
new file mode 100644
index 0000000000..0e103cb1ee
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-6.2/0054_all_nopie-all-flags.patch
@@ -0,0 +1,17 @@
+We need to pass NO_PIE_CFLAGS to ALL_* so gcc doesn't fail when
+we compile it with older gcc and pie.
+
+--- a/gcc/Makefile.in	2015-06-25 19:18:12.000000000 +0200
++++ b/gcc/Makefile.in	2016-04-22 00:12:54.029178860 +0200
+@@ -991,10 +991,10 @@ ALL_CXXFLAGS = $(T_CFLAGS) $(CFLAGS-$@)
+ ALL_CPPFLAGS = $(INCLUDES) $(CPPFLAGS)
+
+ # This is the variable to use when using $(COMPILER).
+-ALL_COMPILERFLAGS = $(ALL_CXXFLAGS)
++ALL_COMPILERFLAGS = $(NO_PIE_CFLAGS) $(ALL_CXXFLAGS)
+
+ # This is the variable to use when using $(LINKER).
+-ALL_LINKERFLAGS = $(ALL_CXXFLAGS)
++ALL_LINKERFLAGS = $(NO_PIE_CFLAGS) $(ALL_CXXFLAGS)
+
+ # Build and host support libraries.
-- 
2.11.1