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| author | Yann E. MORIN <yann.morin.1998@anciens.enib.fr> | 2010-04-07 00:50:10 +0200 |
|---|---|---|
| committer | Peter Korsgaard <jacmet@sunsite.dk> | 2010-04-07 09:49:20 +0200 |
| commit | 6db57c69360087b3b7b8fc2b7764d2911ec24d43 (patch) | |
| tree | cfc88eee4f085d3dc7a82b5807ce92707cbfea71 /toolchain/external-toolchain | |
| parent | 3e7de2af675e24e8a33495ccbd1515854d490122 (diff) | |
| download | buildroot-novena-6db57c69360087b3b7b8fc2b7764d2911ec24d43.tar.gz buildroot-novena-6db57c69360087b3b7b8fc2b7764d2911ec24d43.zip | |
toolchain: fix using external toolchains built with buildroot
The toolchains built with buildroot use specially crafted paths for their
sysroot and prefix. Fix that by asking gcc where it finds a file we
know by relative path to the sysroot.
This has the side effect of greatly simplifying the sysroot detection
in every cases tested so far (BR toolchains, CT-NG toolchains, and
CodeSourcery toolchains).
Fixes bug #851.
Thanks Thomas Petazzoni for the hint and some testings.
Thanks Grant Edwards for the report and the comments.
Signed-off-by: Yann E. MORIN <yann.morin.1998@anciens.enib.fr>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Diffstat (limited to 'toolchain/external-toolchain')
| -rw-r--r-- | toolchain/external-toolchain/ext-tool.mk | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/toolchain/external-toolchain/ext-tool.mk b/toolchain/external-toolchain/ext-tool.mk index 80bdae63b..449328131 100644 --- a/toolchain/external-toolchain/ext-tool.mk +++ b/toolchain/external-toolchain/ext-tool.mk @@ -205,14 +205,7 @@ ifeq ($(BR2_INSTALL_LIBSTDCPP),y) EXTERNAL_LIBS+=libstdc++.so endif -# This dance is needed because the toolchain may have been relocated, so the -# configured paths may no longer match; fortunately, the sysroot moves along -# the toolchain, so is always at the same place relative to the toolchain's -# current location. -CFG_PREFIX_DIR=$(shell LANG=C $(TARGET_CC) -v 2>&1 | grep ^Configured | tr " " "\n" | grep -- "--prefix=" | cut -f2 -d=) -CFG_SYSROOT_DIR=$(shell LANG=C $(TARGET_CC) -v 2>&1 | grep ^Configured | tr " " "\n" | grep -- "--with-sysroot=" | cut -f2 -d=) -REL_SYSROOT_DIR=$(shell echo "$(CFG_SYSROOT_DIR)" |sed -r -e 's:^$(CFG_PREFIX_DIR)::;') -SYSROOT_DIR=$(TOOLCHAIN_EXTERNAL_PATH)/$(REL_SYSROOT_DIR) +SYSROOT_DIR=$(shell readlink -f $$(LANG=C $(TARGET_CC) -print-file-name=libc.a |sed -r -e 's:usr/lib/libc\.a::;')) $(STAMP_DIR)/ext-toolchain-installed: @echo "Checking external toolchain settings" |