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toolchain-external: handle ld.so fixups centrally

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Normally, the Buildroot toolchain logic copies all required libraries from
the external toolchain to the staging directory, including the dynamic
loader ld-*.so.
There are cases, however, where the dynamic loader is _not_ automatically
copied to staging. This happens when the dynamic loader is not inside
ARCH_LIB_DIR itself (e.g. lib64), but instead resides in 'lib' (assume, of
course, that ARCH_LIB_DIR != 'lib').

Currently, this is fixed in a toolchain-specific fixup, e.g. by recreating a
missing symlink or copying over a missing file. Such toolchain specific
fixups are not very nice.

Moreover, in a subsequent patch, the value of ARCH_LIB_DIR changes for some
toolchains, causing them to have the same problem of a missing dynamic
loader. This used to be the case for older Linaro toolchains with libraries
in 'lib/<tuple>': Buildroot used to set ARCH_LIB_DIR=lib but the mentioned
patch changes it to 'lib/<tuple>' instead. As a result, the files directly
under 'lib/' will no longer be copied. There should be none, but the dynamic
loader is a notable exception.
[Note: support for these older Linaro toolchain has been removed in 2016.11]

Instead, copy over the ld.so file(s)/link(s) from the extracted toolchain
into staging, in the central copy_toolchain_sysroot function. The existing
toolchain logic will then handle the copy of these files from staging to
target.
This means the toolchain-specific fixups can be removed.

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Thomas De Schampheleire 2017-02-07 22:56:41 +01:00 committed by Thomas Petazzoni
parent 367f4abcf9
commit ba6bac1383
2 changed files with 11 additions and 10 deletions
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11
toolchain/helpers.mk
View File

@ -55,6 +55,11 @@ copy_toolchain_lib_root = \
# corresponding architecture variants), and we don't want to import
# them.
#
# It is possible that ARCH_LIB_DIR does not contain the dynamic loader
# (ld*.so or similar) because it (or the main symlink to it) normally
# resides in /lib while ARCH_LIB_DIR may be something else (e.g. lib64).
# Therefore, copy the dynamic loader separately.
#
# Then, if the selected architecture variant is not the default one
# (i.e, if SYSROOT_DIR != ARCH_SYSROOT_DIR), then we :
#
@ -106,6 +111,12 @@ copy_toolchain_sysroot = \
$${ARCH_SYSROOT_DIR}/$$i/ $(STAGING_DIR)/$$i/ ; \
fi ; \
done ; \
if [ -e $${ARCH_SYSROOT_DIR}/lib/ld*.so ]; then \
cp -a $${ARCH_SYSROOT_DIR}/lib/ld*.so $(STAGING_DIR)/lib/ ; \
fi ; \
if [ -e $${ARCH_SYSROOT_DIR}/lib/ld*.so.* ]; then \
cp -a $${ARCH_SYSROOT_DIR}/lib/ld*.so.* $(STAGING_DIR)/lib/ ; \
fi ; \
if [ `readlink -f $${SYSROOT_DIR}` != `readlink -f $${ARCH_SYSROOT_DIR}` ] ; then \
if [ ! -d $${ARCH_SYSROOT_DIR}/usr/include ] ; then \
cp -a $${SYSROOT_DIR}/usr/include $(STAGING_DIR)/usr ; \

10
toolchain/toolchain-external/toolchain-external-codesourcery-aarch64/toolchain-external-codesourcery-aarch64.mk
View File

@ -9,14 +9,4 @@ TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_VERSION = 2014.11-95
TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_SOURCE = aarch64-amd-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX)-i686-pc-linux-gnu.tar.bz2
TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_ACTUAL_SOURCE_TARBALL = aarch64-amd-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX).src.tar.bz2
define TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_STAGING_FIXUP
ln -sf ld-2.20.so $(STAGING_DIR)/lib/ld-linux-aarch64.so.1
endef
TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_POST_INSTALL_STAGING_HOOKS += TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_STAGING_FIXUP
define TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_TARGET_FIXUP
ln -sf ld-2.20.so $(TARGET_DIR)/lib/ld-linux-aarch64.so.1
endef
TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_POST_INSTALL_TARGET_HOOKS += TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64_TARGET_FIXUP
$(eval $(toolchain-external-package))