49648d4b01
In 2a87b64 (toolchain-external: align library locations in target and
staging dir), copying the libraries from the sysroot to the target was
changed to a simple find-based solution.
To be sure that the staging directory was entered to find the libraries,
in case the variable was pointing to a symlink, the -L clause to find
was used.
However, that causes extraneous libraries to be copied over.
For example, a ct-ng toolchain would have this sysroot (e.g for an arm
32-bit toolchain):
.../sysroot/lib/
.../sysroot/lib32 -> lib
.../sysroot/lib64 -> lib
.../sysroot/usr/lib/
.../sysroot/usr/lib32 -> lib
.../sysroot/usr/lib64 -> lib
Which we would carry as-is to our own sysroot.
But then, in target, our skeleton creates the /lib/ and /usr/lib
directories, with the necessary lib32 or lib64 symlink pointing to it.
In this case, a lib32->lib symlink is created, but no lib64 symlink
since this is a 32-bit architecture.
To copy the required libraries from staging into target, we scan the
staging directory for all occurences of the required libraries, and copy
them over to target, keeping the same directory layout relative to the
sysroot.
For example:
.../sysroot/usr/lib/libfoo.so --> .../target/usr/lib/libfoo.so
.../sysroot/usr/lib32/libbar.so --> .../target/usr/lib32/libbar.so
.../sysroot/usr/lib64/libbuz.so --> .../target/usr/lib64/libbuz.so
So, when we copy over the libraries from our staging to the target
directory, the "find -L .../sysroot -name libblabla.so.*" would find
multiple instances of libblabla, each in the /usr/lib /usr/lib32 and
/usr/lib64 locations (they are all the exact same file, though).
Since we do have the /usr/lib32->lib symlink, all is OK (but there are
two copies going on, which could be avoided). However, since we do not
have the /usr/lib64->lib symlink, the /usr/lib64/ directory is created.
This was very difficult to observe, as no /lib64/ directory is created,
only the /usr/lib64/ one was. To top it off, this only happens with a
merged /usr, which does not seem like not a common case without systemd.
Since the reason to use -L was to be sure to enter our staging
directory, we just need to ensure that the path ends up with a slash, as
was already talked about in this thread:
http://lists.busybox.net/pipermail/buildroot/2016-April/159737.html
After further discussion, it turns out that the original patch came along
because of the confusion between output/staging (which is a symlink) and
$(STAGING_DIR) which expands to output/host/usr/<tupple>/sysroot (which is
never a symlink), so the symlink handling isn't really needed at all.
[Peter: drop description comment, extend description]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
412 lines
15 KiB
Makefile
412 lines
15 KiB
Makefile
# This Makefile fragment declares toolchain related helper functions.
|
|
|
|
# The copy_toolchain_lib_root function copies a toolchain library and
|
|
# its symbolic links from the sysroot directory to the target
|
|
# directory. Note that this function is used both by the external
|
|
# toolchain logic, and the glibc package, so care must be taken when
|
|
# changing this function.
|
|
#
|
|
# $1: library name
|
|
#
|
|
copy_toolchain_lib_root = \
|
|
LIB="$(strip $1)"; \
|
|
\
|
|
LIBPATHS=`find $(STAGING_DIR)/ -name "$${LIB}" 2>/dev/null` ; \
|
|
for LIBPATH in $${LIBPATHS} ; do \
|
|
DESTDIR=`echo $${LIBPATH} | sed "s,^$(STAGING_DIR)/,," | xargs dirname` ; \
|
|
mkdir -p $(TARGET_DIR)/$${DESTDIR}; \
|
|
while true ; do \
|
|
LIBNAME=`basename $${LIBPATH}`; \
|
|
LIBDIR=`dirname $${LIBPATH}` ; \
|
|
LINKTARGET=`readlink $${LIBPATH}` ; \
|
|
rm -fr $(TARGET_DIR)/$${DESTDIR}/$${LIBNAME}; \
|
|
if test -h $${LIBPATH} ; then \
|
|
ln -sf `basename $${LINKTARGET}` $(TARGET_DIR)/$${DESTDIR}/$${LIBNAME} ; \
|
|
elif test -f $${LIBPATH}; then \
|
|
$(INSTALL) -D -m0755 $${LIBPATH} $(TARGET_DIR)/$${DESTDIR}/$${LIBNAME}; \
|
|
else \
|
|
exit -1; \
|
|
fi; \
|
|
if test -z "$${LINKTARGET}" ; then \
|
|
break ; \
|
|
fi ; \
|
|
LIBPATH="`readlink -f $${LIBPATH}`"; \
|
|
done; \
|
|
done
|
|
|
|
#
|
|
# Copy the full external toolchain sysroot directory to the staging
|
|
# dir. The operation of this function is rendered a little bit
|
|
# complicated by the support for multilib toolchains.
|
|
#
|
|
# We start by copying etc, lib, sbin and usr from the sysroot of the
|
|
# selected architecture variant (as pointed by ARCH_SYSROOT_DIR). This
|
|
# allows to import into the staging directory the C library and
|
|
# companion libraries for the correct architecture variant. We
|
|
# explictly only copy etc, lib, sbin and usr since other directories
|
|
# might exist for other architecture variants (on Codesourcery
|
|
# toolchain, the sysroot for the default architecture variant contains
|
|
# the armv4t and thumb2 subdirectories, which are the sysroot for the
|
|
# corresponding architecture variants), and we don't want to import
|
|
# them.
|
|
#
|
|
# Then, we need to support two types of multilib toolchains:
|
|
#
|
|
# - The toolchains that have nested sysroots: a main sysroot, and
|
|
# then additional sysroots available as subdirectories of the main
|
|
# one. This is for example used by Sourcery CodeBench toolchains.
|
|
#
|
|
# - The toolchains that have side-by-side sysroots. Each sysroot is a
|
|
# complete one, they simply leave one next to each other. This is
|
|
# for example used by MIPS Codescape toolchains.
|
|
#
|
|
# So, we first detect if the selected architecture variant is not the
|
|
# default one (i.e, if SYSROOT_DIR != ARCH_SYSROOT_DIR).
|
|
#
|
|
# If we are in the situation of a nested sysroot, we:
|
|
#
|
|
# * If needed, import the header files from the default architecture
|
|
# variant. Header files are typically shared between the sysroots
|
|
# for the different architecture variants. If we use the
|
|
# non-default one, header files were not copied by the previous
|
|
# step, so we copy them here from the sysroot of the default
|
|
# architecture variant.
|
|
#
|
|
# * Create a symbolic link that matches the name of the subdirectory
|
|
# for the architecture variant in the original sysroot. This is
|
|
# required as the compiler will by default look in
|
|
# sysroot_dir/arch_variant/ for libraries and headers, when the
|
|
# non-default architecture variant is used. Without this, the
|
|
# compiler fails to find libraries and headers.
|
|
#
|
|
# If we are in the situation of a side-by-side sysroot, we:
|
|
#
|
|
# * Create a symbolic link
|
|
#
|
|
# Finally, some toolchains (i.e Linaro binary toolchains) store
|
|
# support libraries (libstdc++, libgcc_s) outside of the sysroot, so
|
|
# we simply copy all the libraries from the "support lib directory"
|
|
# into our sysroot.
|
|
#
|
|
# Note that the 'locale' directories are not copied. They are huge
|
|
# (400+MB) in CodeSourcery toolchains, and they are not really useful.
|
|
#
|
|
# $1: main sysroot directory of the toolchain
|
|
# $2: arch specific sysroot directory of the toolchain
|
|
# $3: arch specific subdirectory in the sysroot
|
|
# $4: directory of libraries ('lib', 'lib32' or 'lib64')
|
|
# $5: support lib directories (for toolchains storing libgcc_s,
|
|
# libstdc++ and other gcc support libraries outside of the
|
|
# sysroot)
|
|
copy_toolchain_sysroot = \
|
|
SYSROOT_DIR="$(strip $1)"; \
|
|
ARCH_SYSROOT_DIR="$(strip $2)"; \
|
|
ARCH_SUBDIR="$(strip $3)"; \
|
|
ARCH_LIB_DIR="$(strip $4)" ; \
|
|
SUPPORT_LIB_DIR="$(strip $5)" ; \
|
|
for i in etc $${ARCH_LIB_DIR} sbin usr usr/$${ARCH_LIB_DIR}; do \
|
|
if [ -d $${ARCH_SYSROOT_DIR}/$$i ] ; then \
|
|
rsync -au --chmod=u=rwX,go=rX --exclude 'usr/lib/locale' \
|
|
--include '/libexec*/' --exclude '/lib*/' \
|
|
$${ARCH_SYSROOT_DIR}/$$i/ $(STAGING_DIR)/$$i/ ; \
|
|
fi ; \
|
|
done ; \
|
|
SYSROOT_DIR_CANON=`readlink -f $${SYSROOT_DIR}` ; \
|
|
ARCH_SYSROOT_DIR_CANON=`readlink -f $${ARCH_SYSROOT_DIR}` ; \
|
|
if [ $${SYSROOT_DIR_CANON} != $${ARCH_SYSROOT_DIR_CANON} ] ; then \
|
|
relpath="./" ; \
|
|
if [ $${ARCH_SYSROOT_DIR_CANON:0:$${\#SYSROOT_DIR_CANON}} == $${SYSROOT_DIR_CANON} ] ; then \
|
|
if [ ! -d $${ARCH_SYSROOT_DIR}/usr/include ] ; then \
|
|
cp -a $${SYSROOT_DIR}/usr/include $(STAGING_DIR)/usr ; \
|
|
fi ; \
|
|
mkdir -p `dirname $(STAGING_DIR)/$${ARCH_SUBDIR}` ; \
|
|
nbslashs=`printf $${ARCH_SUBDIR} | sed 's%[^/]%%g' | wc -c` ; \
|
|
for slash in `seq 1 $${nbslashs}` ; do \
|
|
relpath=$${relpath}"../" ; \
|
|
done ; \
|
|
ln -s $${relpath} $(STAGING_DIR)/$${ARCH_SUBDIR} ; \
|
|
echo "Symlinking $(STAGING_DIR)/$${ARCH_SUBDIR} -> $${relpath}" ; \
|
|
elif [ `dirname $${ARCH_SYSROOT_DIR_CANON}` == `dirname $${SYSROOT_DIR_CANON}` ] ; then \
|
|
ln -snf $${relpath} $(STAGING_DIR)/`basename $${ARCH_SYSROOT_DIR_CANON}` ; \
|
|
echo "Symlinking $(STAGING_DIR)/`basename $${ARCH_SYSROOT_DIR_CANON}` -> $${relpath}" ; \
|
|
fi ; \
|
|
fi ; \
|
|
if test -n "$${SUPPORT_LIB_DIR}" ; then \
|
|
cp -a $${SUPPORT_LIB_DIR}/* $(STAGING_DIR)/lib/ ; \
|
|
fi ; \
|
|
find $(STAGING_DIR) -type d | xargs chmod 755
|
|
|
|
#
|
|
# Check the specified kernel headers version actually matches the
|
|
# version in the toolchain.
|
|
#
|
|
# $1: sysroot directory
|
|
# $2: kernel version string, in the form: X.Y
|
|
#
|
|
check_kernel_headers_version = \
|
|
if ! support/scripts/check-kernel-headers.sh $(1) $(2); then \
|
|
exit 1; \
|
|
fi
|
|
|
|
#
|
|
# Check the specific gcc version actually matches the version in the
|
|
# toolchain
|
|
#
|
|
# $1: path to gcc
|
|
# $2: expected gcc version
|
|
#
|
|
# Some details about the sed expression:
|
|
# - 1!d
|
|
# - delete if not line 1
|
|
#
|
|
# - s/^[^)]+\) ([^[:space:]]+).*/\1/
|
|
# - eat all until the first ')' character followed by a space
|
|
# - match as many non-space chars as possible
|
|
# - eat all the remaining chars on the line
|
|
# - replace by the matched expression
|
|
#
|
|
check_gcc_version = \
|
|
expected_version="$(strip $2)" ; \
|
|
if [ -z "$${expected_version}" ]; then \
|
|
printf "Internal error, gcc version unknown (no GCC_AT_LEAST_X_Y selected)\n"; \
|
|
exit 1 ; \
|
|
fi; \
|
|
real_version=`$(1) --version | sed -r -e '1!d; s/^[^)]+\) ([^[:space:]]+).*/\1/;'` ; \
|
|
if [[ ! "$${real_version}" =~ ^$${expected_version}\. ]] ; then \
|
|
printf "Incorrect selection of gcc version: expected %s.x, got %s\n" \
|
|
"$${expected_version}" "$${real_version}" ; \
|
|
exit 1 ; \
|
|
fi
|
|
|
|
#
|
|
# Check the availability of a particular glibc feature. This function
|
|
# is used to check toolchain options that are always supported by
|
|
# glibc, so we simply check that the corresponding option is properly
|
|
# enabled.
|
|
#
|
|
# $1: Buildroot option name
|
|
# $2: feature description
|
|
#
|
|
check_glibc_feature = \
|
|
if [ "$($(1))" != "y" ] ; then \
|
|
echo "$(2) available in C library, please enable $(1)" ; \
|
|
exit 1 ; \
|
|
fi
|
|
|
|
#
|
|
# Check the availability of RPC support in a glibc toolchain
|
|
#
|
|
# $1: sysroot directory
|
|
#
|
|
check_glibc_rpc_feature = \
|
|
IS_IN_LIBC=`test -f $(1)/usr/include/rpc/rpc.h && echo y` ; \
|
|
if [ "$(BR2_TOOLCHAIN_HAS_NATIVE_RPC)" != "y" -a "$${IS_IN_LIBC}" = "y" ] ; then \
|
|
echo "RPC support available in C library, please enable BR2_TOOLCHAIN_EXTERNAL_INET_RPC" ; \
|
|
exit 1 ; \
|
|
fi ; \
|
|
if [ "$(BR2_TOOLCHAIN_HAS_NATIVE_RPC)" = "y" -a "$${IS_IN_LIBC}" != "y" ] ; then \
|
|
echo "RPC support not available in C library, please disable BR2_TOOLCHAIN_EXTERNAL_INET_RPC" ; \
|
|
exit 1 ; \
|
|
fi
|
|
|
|
#
|
|
# Check the correctness of a glibc external toolchain configuration.
|
|
# 1. Check that the C library selected in Buildroot matches the one
|
|
# of the external toolchain
|
|
# 2. Check that all the C library-related features are enabled in the
|
|
# config, since glibc always supports all of them
|
|
#
|
|
# $1: sysroot directory
|
|
#
|
|
check_glibc = \
|
|
SYSROOT_DIR="$(strip $1)"; \
|
|
if test `find $${SYSROOT_DIR}/ -maxdepth 2 -name 'ld-linux*.so.*' -o -name 'ld.so.*' -o -name 'ld64.so.*' | wc -l` -eq 0 ; then \
|
|
echo "Incorrect selection of the C library"; \
|
|
exit -1; \
|
|
fi; \
|
|
$(call check_glibc_feature,BR2_USE_MMU,MMU support) ;\
|
|
$(call check_glibc_rpc_feature,$${SYSROOT_DIR})
|
|
|
|
#
|
|
# Check that the selected C library really is musl
|
|
#
|
|
# $1: sysroot directory
|
|
check_musl = \
|
|
SYSROOT_DIR="$(strip $1)"; \
|
|
if test ! -f $${SYSROOT_DIR}/lib/libc.so -o -e $${SYSROOT_DIR}/lib/libm.so ; then \
|
|
echo "Incorrect selection of the C library" ; \
|
|
exit -1; \
|
|
fi
|
|
|
|
#
|
|
# Check the conformity of Buildroot configuration with regard to the
|
|
# uClibc configuration of the external toolchain, for a particular
|
|
# feature.
|
|
#
|
|
# If 'Buildroot option name' ($2) is empty it means the uClibc option
|
|
# is mandatory.
|
|
#
|
|
# $1: uClibc macro name
|
|
# $2: Buildroot option name
|
|
# $3: uClibc config file
|
|
# $4: feature description
|
|
#
|
|
check_uclibc_feature = \
|
|
IS_IN_LIBC=`grep -q "\#define $(1) 1" $(3) && echo y` ; \
|
|
if [ -z "$(2)" ] ; then \
|
|
if [ "$${IS_IN_LIBC}" != "y" ] ; then \
|
|
echo "$(4) not available in C library, toolchain unsuitable for Buildroot" ; \
|
|
exit 1 ; \
|
|
fi ; \
|
|
else \
|
|
if [ "$($(2))" != "y" -a "$${IS_IN_LIBC}" = "y" ] ; then \
|
|
echo "$(4) available in C library, please enable $(2)" ; \
|
|
exit 1 ; \
|
|
fi ; \
|
|
if [ "$($(2))" = "y" -a "$${IS_IN_LIBC}" != "y" ] ; then \
|
|
echo "$(4) not available in C library, please disable $(2)" ; \
|
|
exit 1 ; \
|
|
fi ; \
|
|
fi
|
|
|
|
#
|
|
# Check the correctness of a uclibc external toolchain configuration
|
|
# 1. Check that the C library selected in Buildroot matches the one
|
|
# of the external toolchain
|
|
# 2. Check that the features enabled in the Buildroot configuration
|
|
# match the features available in the uClibc of the external
|
|
# toolchain
|
|
#
|
|
# $1: sysroot directory
|
|
#
|
|
check_uclibc = \
|
|
SYSROOT_DIR="$(strip $1)"; \
|
|
if ! test -f $${SYSROOT_DIR}/usr/include/bits/uClibc_config.h ; then \
|
|
echo "Incorrect selection of the C library"; \
|
|
exit -1; \
|
|
fi; \
|
|
UCLIBC_CONFIG_FILE=$${SYSROOT_DIR}/usr/include/bits/uClibc_config.h ; \
|
|
$(call check_uclibc_feature,__ARCH_USE_MMU__,BR2_USE_MMU,$${UCLIBC_CONFIG_FILE},MMU support) ;\
|
|
$(call check_uclibc_feature,__UCLIBC_HAS_LFS__,,$${UCLIBC_CONFIG_FILE},Large file support) ;\
|
|
$(call check_uclibc_feature,__UCLIBC_HAS_IPV6__,,$${UCLIBC_CONFIG_FILE},IPv6 support) ;\
|
|
$(call check_uclibc_feature,__UCLIBC_HAS_RPC__,BR2_TOOLCHAIN_HAS_NATIVE_RPC,$${UCLIBC_CONFIG_FILE},RPC support) ;\
|
|
$(call check_uclibc_feature,__UCLIBC_HAS_LOCALE__,BR2_ENABLE_LOCALE,$${UCLIBC_CONFIG_FILE},Locale support) ;\
|
|
$(call check_uclibc_feature,__UCLIBC_HAS_WCHAR__,BR2_USE_WCHAR,$${UCLIBC_CONFIG_FILE},Wide char support) ;\
|
|
$(call check_uclibc_feature,__UCLIBC_HAS_THREADS__,BR2_TOOLCHAIN_HAS_THREADS,$${UCLIBC_CONFIG_FILE},Thread support) ;\
|
|
$(call check_uclibc_feature,__PTHREADS_DEBUG_SUPPORT__,BR2_TOOLCHAIN_HAS_THREADS_DEBUG,$${UCLIBC_CONFIG_FILE},Thread debugging support) ;\
|
|
$(call check_uclibc_feature,__UCLIBC_HAS_THREADS_NATIVE__,BR2_TOOLCHAIN_HAS_THREADS_NPTL,$${UCLIBC_CONFIG_FILE},NPTL thread support)
|
|
|
|
#
|
|
# Check that the Buildroot configuration of the ABI matches the
|
|
# configuration of the external toolchain.
|
|
#
|
|
# $1: cross-gcc path
|
|
# $2: cross-readelf path
|
|
#
|
|
check_arm_abi = \
|
|
__CROSS_CC=$(strip $1) ; \
|
|
__CROSS_READELF=$(strip $2) ; \
|
|
EXT_TOOLCHAIN_TARGET=`LANG=C $${__CROSS_CC} -v 2>&1 | grep ^Target | cut -f2 -d ' '` ; \
|
|
if ! echo $${EXT_TOOLCHAIN_TARGET} | grep -qE 'eabi(hf)?$$' ; then \
|
|
echo "External toolchain uses the unsuported OABI" ; \
|
|
exit 1 ; \
|
|
fi ; \
|
|
if ! echo 'int main(void) {}' | $${__CROSS_CC} -x c -o $(BUILD_DIR)/.br-toolchain-test.tmp - ; then \
|
|
rm -f $(BUILD_DIR)/.br-toolchain-test.tmp*; \
|
|
abistr_$(BR2_ARM_EABI)='EABI'; \
|
|
abistr_$(BR2_ARM_EABIHF)='EABIhf'; \
|
|
echo "Incorrect ABI setting: $${abistr_y} selected, but toolchain is incompatible"; \
|
|
exit 1 ; \
|
|
fi ; \
|
|
rm -f $(BUILD_DIR)/.br-toolchain-test.tmp*
|
|
|
|
#
|
|
# Check that the external toolchain supports C++
|
|
#
|
|
# $1: cross-g++ path
|
|
#
|
|
check_cplusplus = \
|
|
__CROSS_CXX=$(strip $1) ; \
|
|
$${__CROSS_CXX} -v > /dev/null 2>&1 ; \
|
|
if test $$? -ne 0 ; then \
|
|
echo "C++ support is selected but is not available in external toolchain" ; \
|
|
exit 1 ; \
|
|
fi
|
|
|
|
#
|
|
# Check that the cross-compiler given in the configuration exists
|
|
#
|
|
# $1: cross-gcc path
|
|
#
|
|
check_cross_compiler_exists = \
|
|
__CROSS_CC=$(strip $1) ; \
|
|
$${__CROSS_CC} -v > /dev/null 2>&1 ; \
|
|
if test $$? -ne 0 ; then \
|
|
echo "Cannot execute cross-compiler '$${__CROSS_CC}'" ; \
|
|
exit 1 ; \
|
|
fi
|
|
|
|
#
|
|
# Check for toolchains known not to work with Buildroot.
|
|
# - For the Angstrom toolchains, we check by looking at the vendor part of
|
|
# the host tuple.
|
|
# - Exclude distro-class toolchains which are not relocatable.
|
|
# - Exclude broken toolchains which return "libc.a" with -print-file-name.
|
|
# - Exclude toolchains which doesn't support --sysroot option.
|
|
#
|
|
# $1: cross-gcc path
|
|
#
|
|
check_unusable_toolchain = \
|
|
__CROSS_CC=$(strip $1) ; \
|
|
vendor=`$${__CROSS_CC} -dumpmachine | cut -f2 -d'-'` ; \
|
|
if test "$${vendor}" = "angstrom" ; then \
|
|
echo "Angstrom toolchains are not pure toolchains: they contain" ; \
|
|
echo "many other libraries than just the C library, which makes" ; \
|
|
echo "them unsuitable as external toolchains for build systems" ; \
|
|
echo "such as Buildroot." ; \
|
|
exit 1 ; \
|
|
fi; \
|
|
with_sysroot=`$${__CROSS_CC} -v 2>&1 |sed -r -e '/.* --with-sysroot=([^[:space:]]+)[[:space:]].*/!d; s//\1/'`; \
|
|
if test "$${with_sysroot}" = "/" ; then \
|
|
echo "Distribution toolchains are unsuitable for use by Buildroot," ; \
|
|
echo "as they were configured in a way that makes them non-relocatable,"; \
|
|
echo "and contain a lot of pre-built libraries that would conflict with"; \
|
|
echo "the ones Buildroot wants to build."; \
|
|
exit 1; \
|
|
fi; \
|
|
libc_a_path=`$${__CROSS_CC} -print-file-name=libc.a` ; \
|
|
if test "$${libc_a_path}" = "libc.a" ; then \
|
|
echo "Unable to detect the toolchain sysroot, Buildroot cannot use this toolchain." ; \
|
|
exit 1 ; \
|
|
fi ; \
|
|
sysroot_dir="$(call toolchain_find_sysroot,$${__CROSS_CC})" ; \
|
|
if test -z "$${sysroot_dir}" ; then \
|
|
echo "External toolchain doesn't support --sysroot. Cannot use." ; \
|
|
exit 1 ; \
|
|
fi
|
|
|
|
#
|
|
# Check if the toolchain has SSP (stack smashing protector) support
|
|
#
|
|
# $1: cross-gcc path
|
|
#
|
|
check_toolchain_ssp = \
|
|
__CROSS_CC=$(strip $1) ; \
|
|
__HAS_SSP=`echo 'void main(){}' | $${__CROSS_CC} -fstack-protector -x c - -o $(BUILD_DIR)/.br-toolchain-test.tmp >/dev/null 2>&1 && echo y` ; \
|
|
if [ "$(BR2_TOOLCHAIN_HAS_SSP)" != "y" -a "$${__HAS_SSP}" = "y" ] ; then \
|
|
echo "SSP support available in this toolchain, please enable BR2_TOOLCHAIN_EXTERNAL_HAS_SSP" ; \
|
|
exit 1 ; \
|
|
fi ; \
|
|
if [ "$(BR2_TOOLCHAIN_HAS_SSP)" = "y" -a "$${__HAS_SSP}" != "y" ] ; then \
|
|
echo "SSP support not available in this toolchain, please disable BR2_TOOLCHAIN_EXTERNAL_HAS_SSP" ; \
|
|
exit 1 ; \
|
|
fi ; \
|
|
rm -f $(BUILD_DIR)/.br-toolchain-test.tmp*
|
|
|
|
#
|
|
# Generate gdbinit file for use with Buildroot
|
|
#
|
|
gen_gdbinit_file = \
|
|
mkdir -p $(STAGING_DIR)/usr/share/buildroot/ ; \
|
|
echo "set sysroot $(STAGING_DIR)" > $(STAGING_DIR)/usr/share/buildroot/gdbinit
|