diff options
Diffstat (limited to 'toolchain/external-toolchain')
| -rw-r--r-- | toolchain/external-toolchain/ext-tool.mk | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/toolchain/external-toolchain/ext-tool.mk b/toolchain/external-toolchain/ext-tool.mk index 3943ceb98..b1eee2303 100644 --- a/toolchain/external-toolchain/ext-tool.mk +++ b/toolchain/external-toolchain/ext-tool.mk @@ -270,9 +270,10 @@ endif # ! no threads # SYSROOT_DIR selection. We first try the -print-sysroot option, # available in gcc 4.4.x and in some Codesourcery toolchains. If this # option is not available, we fallback to the value of --with-sysroot -# as visible in CROSS-gcc -v. We don't pass the -march= option to gcc -# as we want the "main" sysroot, which contains all variants of the C -# library in the case of multilib toolchains. +# as visible in CROSS-gcc -v. We don't pass any option to gcc that +# could select a multilib variant as we want the "main" sysroot, which +# contains all variants of the C library in the case of multilib +# toolchains. SYSROOT_DIR=$(shell $(TARGET_CC) -print-sysroot 2>/dev/null) ifeq ($(SYSROOT_DIR),) SYSROOT_DIR=$(shell readlink -f $$(LANG=C $(TARGET_CC) -print-file-name=libc.a |sed -r -e 's:usr/lib/libc\.a::;')) @@ -281,15 +282,14 @@ endif # Now, find if the toolchain specifies a sub-directory for the # specific architecture variant we're interested in. This is the case # with multilib toolchain, when the selected architecture variant is -# not the default one. To do so, we ask the compiler by passing the -# appropriate -march= flags. ARCH_SUBDIR will contain the +# not the default one. To do so, we ask the compiler by passing all +# flags, except the --sysroot flag since we want to the compiler to +# tell us where its original sysroot is. ARCH_SUBDIR will contain the # subdirectory, in the main SYSROOT_DIR, that corresponds to the # selected architecture variant. ARCH_SYSROOT_DIR will contain the # full path to this location. -ifneq ($(CC_TARGET_ARCH_),) -TARGET_CC_ARCH_CFLAGS+=-march=$(CC_TARGET_ARCH_) -endif -ARCH_SUBDIR=$(shell $(TARGET_CC) $(TARGET_CC_ARCH_CFLAGS) -print-multi-directory) +TARGET_CFLAGS_NO_SYSROOT=$(filter-out --sysroot=%,$(TARGET_CFLAGS)) +ARCH_SUBDIR=$(shell $(TARGET_CC) $(TARGET_CFLAGS_NO_SYSROOT) -print-multi-directory) ARCH_SYSROOT_DIR=$(SYSROOT_DIR)/$(ARCH_SUBDIR) $(STAMP_DIR)/ext-toolchain-installed: |