mirror of
https://git.busybox.net/buildroot.git
synced 2024-11-27 23:43:34 +08:00
006ba68a30
We currently support gcc as old as 4.3. However, Buildroot works perfectly well with even older gcc versions (tested with 4.1). So we can add an option BR2_TOOLCHAIN_EXTERNAL_GCC_OLD to support that. The help text of this option is written with plenty of discouragement. We use _OLD and not something like _PRE_4_3, because at some point we will likely remove the 4.3 option and what would then require a name change. We don't set any _AT_LEAST option in this case because it's no use - there is no lower bound on the version in this case. We therefore leave BR2_TOOLCHAIN_GCC_AT_LEAST empty (the implicit default). When it is empty, we don't do a version check at all in check_gcc_version (previously we errored out when it was empty). Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
406 lines
15 KiB
Makefile
406 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, if the selected architecture variant is not the default one
|
|
# (i.e, if SYSROOT_DIR != ARCH_SYSROOT_DIR), then we :
|
|
#
|
|
# * 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.
|
|
#
|
|
# 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 ; \
|
|
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 ; \
|
|
fi ; \
|
|
mkdir -p `dirname $(STAGING_DIR)/$${ARCH_SUBDIR}` ; \
|
|
relpath="./" ; \
|
|
nbslashs=`printf $${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}" ; \
|
|
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 \
|
|
exit 0 ; \
|
|
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 $$? -ne 0 ; then \
|
|
echo "C++ support is selected but is not available in external toolchain" ; \
|
|
exit 1 ; \
|
|
fi
|
|
|
|
#
|
|
#
|
|
# Check that the external toolchain supports Fortran
|
|
#
|
|
# $1: cross-gfortran path
|
|
#
|
|
check_fortran = \
|
|
__CROSS_FC=$(strip $1) ; \
|
|
__o=$(BUILD_DIR)/.br-toolchain-test-fortran.tmp ; \
|
|
printf 'program hello\n\tprint *, "Hello Fortran!\\n"\nend program hello\n' | \
|
|
$${__CROSS_FC} -x f95 -o $${__o} - ; \
|
|
if test $$? -ne 0 ; then \
|
|
rm -f $${__o}* ; \
|
|
echo "Fortran support is selected but is not available in external toolchain" ; \
|
|
exit 1 ; \
|
|
fi ; \
|
|
rm -f $${__o}* \
|
|
|
|
#
|
|
# 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
|