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toolchain: ARM: Fix option conflict with multiarch

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This problem exposed when compiling glibc, but applicable across the
board. gcc compiles runtime libraries for all supported architectures,
unless otherwise specified, and later selects applicable library based
-m[arch,cpu,*] options, thus these options should not be passed to gcc
as they break the compilation process.

Signed-off-by: Boris Krasnovskiy <borkra@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
[modified so it only touches ARM - I'm too chicken, changed authors email]
This commit is contained in:
Boris Krasnovskiy 2019-03-20 23:00:51 -04:00 committed by Christian Lamparter
parent 8dcc108760
commit 4cf991bedb
1 changed files with 5 additions and 0 deletions
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5
toolchain/gcc/common.mk
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@ -170,6 +170,11 @@ ifeq ($(CONFIG_arm),y)
--with-fpu=$(word 2, $(subst +, ",$(CONFIG_CPU_TYPE))) \
--with-float=hard
endif
# Do not let TARGET_CFLAGS get poisoned by extra CPU optimization flags
# that do not belong here. The cpu,fpu type should be specified via
# --with-cpu and --with-fpu for ARM and not CFLAGS.
TARGET_CFLAGS:=$(filter-out -m%,$(call qstrip,$(TARGET_CFLAGS)))
endif
ifeq ($(CONFIG_TARGET_x86)$(CONFIG_USE_GLIBC)$(CONFIG_INSTALL_GCCGO),yyy)