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gcc: set the default target arch

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The default x86-64 architecture for target gcc (ie, the one in poky
build appliances) is native. Since we have a variety of build systems
it will occasionally produce instructions that don't work on all of
our development system.

Instead, set gcc's default architecture to the one specified in
TUNE_CC_ARCH, that guarantees that gcc-runtime and any binaries
produced are compatible with the target machine type.

(From OE-Core rev: 52b952e474e655f8b4b6501813d57e20c9f02ba2)

Signed-off-by: Daniel McGregor <daniel.mcgregor@vecima.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Daniel McGregor
2022-09-28 16:13:19 -06:00
committed by Richard Purdie
parent 92527cdb76
commit beea1db008
2 changed files with 11 additions and 1 deletions
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10
meta/recipes-devtools/gcc/gcc-common.inc
View File

@@ -32,6 +32,16 @@ def get_gcc_float_setting(bb, d):
get_gcc_float_setting[vardepvalue] = "${@get_gcc_float_setting(bb, d)}"
def get_gcc_x86_64_arch_setting(bb, d):
import re
march = re.match(r'^.*-march=([^\s]*)', d.getVar('TUNE_CCARGS'))
if march:
return "--with-arch=%s " % march.group(1)
# The earliest supported x86-64 CPU
return "--with-arch=core2"
get_gcc_x86_64_arch_setting[vardepvalue] = "${@get_gcc_x86_64_arch_setting(bb, d)}"
def get_gcc_mips_plt_setting(bb, d):
if d.getVar('TRANSLATED_TARGET_ARCH') in [ 'mips', 'mipsel' ] and bb.utils.contains('DISTRO_FEATURES', 'mplt', True, False, d):
return "--with-mips-plt"

2
meta/recipes-devtools/gcc/gcc-target.inc
View File

@@ -19,7 +19,7 @@ EXTRA_OECONF:append:armv6:class-target = " --with-arch=armv6${ARMFPARCHEXT}"
EXTRA_OECONF:append:armv7a:class-target = " --with-arch=armv7-a${ARMFPARCHEXT}"
EXTRA_OECONF:append:armv7ve:class-target = " --with-arch=armv7ve${ARMFPARCHEXT}"
EXTRA_OECONF:append:arc:class-target = " --with-cpu=${TUNE_PKGARCH}"
EXTRA_OECONF:append:x86-64:class-target = " --with-arch=native"
EXTRA_OECONF:append:x86-64:class-target = " ${@get_gcc_x86_64_arch_setting(bb, d)}"
# libcc1 requres gcc_cv_objdump when cross build, but gcc_cv_objdump is
# set in subdir gcc, so subdir libcc1 can't use it, export it here to