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https://github.com/crosstool-ng/crosstool-ng.git
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ae126c295b
This is dubious because if the copy fails, then we'll miss the error. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
332 lines
14 KiB
Plaintext
332 lines
14 KiB
Plaintext
# This file contains the functions common to glibc and eglibc
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# Build and install headers and start files
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do_libc_start_files() {
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local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
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CT_DoStep INFO "Installing C library headers & start files"
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mkdir -p "${CT_BUILD_DIR}/build-libc-startfiles"
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cd "${CT_BUILD_DIR}/build-libc-startfiles"
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CT_DoLog EXTRA "Configuring C library"
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case "${CT_LIBC}" in
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eglibc)
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if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
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CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
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fi
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;;
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esac
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cross_cc=$(CT_Which "${CT_TARGET}-gcc")
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cross_cxx=$(CT_Which "${CT_TARGET}-g++")
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cross_ar=$(CT_Which "${CT_TARGET}-ar")
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cross_ranlib=$(CT_Which "${CT_TARGET}-ranlib")
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CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
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CT_DoLog DEBUG "Using g++ for target: '${cross_cxx}'"
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CT_DoLog DEBUG "Using ar for target: '${cross_ar}'"
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CT_DoLog DEBUG "Using ranlib for target: '${cross_ranlib}'"
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touch config.cache
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if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
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echo "libc_cv_forced_unwind=yes" >>config.cache
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echo "libc_cv_c_cleanup=yes" >>config.cache
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fi
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# Pre-seed the configparms file with values from the config option
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printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
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BUILD_CC="${CT_BUILD}-gcc" \
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CC=${cross_cc} \
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CXX=${cross_cxx} \
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AR=${cross_ar} \
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RANLIB=${cross_ranlib} \
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CT_DoExecLog CFG \
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"${src_dir}/configure" \
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--prefix=/usr \
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--with-headers="${CT_HEADERS_DIR}" \
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--build="${CT_BUILD}" \
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--host="${CT_TARGET}" \
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--cache-file="$(pwd)/config.cache" \
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--disable-profile \
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--without-gd \
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--without-cvs \
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--enable-add-ons
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CT_DoLog EXTRA "Installing C library headers"
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# use the 'install-headers' makefile target to install the
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# headers
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CT_DoExecLog ALL make ${JOBSFLAGS} \
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install_root=${CT_SYSROOT_DIR} \
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install-bootstrap-headers=yes \
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install-headers
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# For glibc, a few headers need to be manually installed
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if [ "${CT_LIBC}" = "glibc" ]; then
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# Two headers -- stubs.h and features.h -- aren't installed by install-headers,
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# so do them by hand. We can tolerate an empty stubs.h for the moment.
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# See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
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mkdir -p "${CT_HEADERS_DIR}/gnu"
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CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
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CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h" \
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"${CT_HEADERS_DIR}/features.h"
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# Building the bootstrap gcc requires either setting inhibit_libc, or
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# having a copy of stdio_lim.h... see
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# http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
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CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
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# Following error building gcc-4.0.0's gcj:
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# error: bits/syscall.h: No such file or directory
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# solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
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# but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
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case "${CT_ARCH}" in
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arm) ;;
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*) CT_DoExecLog ALL cp -v "misc/syscall-list.h" \
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"${CT_HEADERS_DIR}/bits/syscall.h"
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;;
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esac
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fi
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if [ "${CT_THREADS}" = "nptl" ]; then
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CT_DoLog EXTRA "Installing C library start files"
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# there are a few object files needed to link shared libraries,
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# which we build and install by hand
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CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
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CT_DoExecLog ALL make ${JOBSFLAGS} csu/subdir_lib
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CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
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"${CT_SYSROOT_DIR}/usr/lib"
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# Finally, 'libgcc_s.so' requires a 'libc.so' to link against.
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# However, since we will never actually execute its code,
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# it doesn't matter what it contains. So, treating '/dev/null'
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# as a C source file, we produce a dummy 'libc.so' in one step
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CT_DoExecLog ALL "${cross_cc}" -nostdlib \
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-nostartfiles \
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-shared \
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-x c /dev/null \
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-o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
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fi # threads == nptl
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CT_EndStep
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}
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# This function builds and install the full C library
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do_libc() {
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local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
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local extra_cc_args
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local -a extra_config
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local -a extra_make_args
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local glibc_cflags
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CT_DoStep INFO "Installing C library"
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mkdir -p "${CT_BUILD_DIR}/build-libc"
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cd "${CT_BUILD_DIR}/build-libc"
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CT_DoLog EXTRA "Configuring C library"
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case "${CT_LIBC}" in
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eglibc)
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if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
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CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
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fi
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if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
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OPTIMIZE=-Os
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else
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OPTIMIZE=-O2
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fi
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;;
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glibc)
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# glibc can't be built without -O2 (reference needed!)
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OPTIMIZE=-O2
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# Also, if those two are missing, iconv build breaks
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extra_config+=( --disable-debug --disable-sanity-checks )
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;;
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esac
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# Add some default glibc config options if not given by user.
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# We don't need to be conditional on wether the user did set different
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# values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
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extra_config+=("$(do_libc_min_kernel_config)")
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case "${CT_THREADS}" in
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nptl) extra_config+=("--with-__thread" "--with-tls");;
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linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
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none) extra_config+=("--without-__thread" "--without-nptl")
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case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
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*-tls*) ;;
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*) extra_config+=("--without-tls");;
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esac
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;;
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esac
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case "${CT_SHARED_LIBS}" in
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y) extra_config+=("--enable-shared");;
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*) extra_config+=("--disable-shared");;
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esac
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case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
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y,) extra_config+=("--with-fp");;
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,y) extra_config+=("--without-fp");;
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esac
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if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
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extra_config+=("--disable-versioning")
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fi
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if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
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extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
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fi
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case "$(do_libc_add_ons_list ,)" in
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"") ;;
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*) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
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esac
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extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
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touch config.cache
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if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
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echo "libc_cv_forced_unwind=yes" >>config.cache
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echo "libc_cv_c_cleanup=yes" >>config.cache
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fi
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# Pre-seed the configparms file with values from the config option
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printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
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cross_cc=$(CT_Which "${CT_TARGET}-gcc")
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CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
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CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
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CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
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CT_DoLog DEBUG "Extra CC args passed : '${extra_cc_args}'"
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glibc_cflags="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}"
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case "${CT_LIBC_ENABLE_FORTIFIED_BUILD}" in
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y) ;;
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*) glibc_cflags+=" -U_FORTIFY_SOURCE";;
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esac
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# ./configure is mislead by our tools override wrapper for bash
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# so just tell it where the real bash is _on_the_target_!
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# Notes:
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# - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
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# - ${BASH_SHELL} is only used to set BASH
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# - ${BASH} is only used to set the shebang
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# in two scripts to run on the target
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# So we can safely bypass bash detection at compile time.
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# Should this change in a future eglibc release, we'd better
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# directly mangle the generated scripts _after_ they get built,
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# or even after they get installed... eglibc is such a sucker...
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echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
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# Configure with --prefix the way we want it on the target...
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# There are a whole lot of settings here. You'll probably want
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# to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG
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# Compare these options with the ones used when installing the glibc headers above - they're different.
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# Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
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# See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
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# Set BUILD_CC, or we won't be able to build datafiles
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BUILD_CC="${CT_BUILD}-gcc" \
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CFLAGS="${glibc_cflags}" \
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CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
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AR=${CT_TARGET}-ar \
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RANLIB=${CT_TARGET}-ranlib \
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CT_DoExecLog CFG \
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"${src_dir}/configure" \
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--prefix=/usr \
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--build=${CT_BUILD} \
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--host=${CT_TARGET} \
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--cache-file="$(pwd)/config.cache" \
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--without-cvs \
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--disable-profile \
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--without-gd \
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--with-headers="${CT_HEADERS_DIR}" \
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"${extra_config[@]}" \
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${CT_LIBC_GLIBC_EXTRA_CONFIG}
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# build hacks
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case "${CT_ARCH},${CT_ARCH_CPU}" in
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powerpc,8??)
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# http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
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CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
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extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
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;;
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esac
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CT_DoLog EXTRA "Building C library"
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CT_DoExecLog ALL make ${JOBSFLAGS} \
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"${extra_make_args[@]}" \
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all
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CT_DoLog EXTRA "Installing C library"
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CT_DoExecLog ALL make ${JOBSFLAGS} \
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"${extra_make_args[@]}" \
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install_root="${CT_SYSROOT_DIR}" \
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install
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CT_EndStep
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}
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# This function finishes the C library install
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# This is a no-op
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do_libc_finish() {
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:
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}
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# Build up the addons list, separated with $1
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do_libc_add_ons_list() {
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local sep="$1"
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local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}" \
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|sed -r -e "s/[[:space:],]/${sep}/g;" \
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)"
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case "${CT_THREADS}" in
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none) ;;
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*) addons_list="${addons_list}${sep}${CT_THREADS}";;
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esac
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[ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
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# Remove duplicate, leading and trailing separators
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echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
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}
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# Compute up the minimum supported Linux kernel version
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do_libc_min_kernel_config() {
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local min_kernel_config
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case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
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*--enable-kernel*) ;;
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*) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
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# We can't rely on the kernel version from the configuration,
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# because it might not be available if the user uses pre-installed
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# headers. On the other hand, both method will have the kernel
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# version installed in "usr/include/linux/version.h" in the sysroot.
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# Parse that instead of having two code-paths.
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version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
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if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
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CT_Abort "Linux version is unavailable in installed headers files"
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fi
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version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
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|cut -d ' ' -f 3 \
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)"
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version=$(((version_code>>16)&0xFF))
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patchlevel=$(((version_code>>8)&0xFF))
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sublevel=$((version_code&0xFF))
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min_kernel_config="${version}.${patchlevel}.${sublevel}"
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elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
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# Trim the fourth part of the linux version, keeping only the first three numbers
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min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
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|sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
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)"
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fi
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echo "--enable-kernel=${min_kernel_config}"
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;;
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esac
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}
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