# This file contains the functions common to glibc and eglibc # Extract the C library tarball(s) do_libc_extract() { local addon # Extract the main tarball CT_Extract "${CT_LIBC}-${CT_LIBC_VERSION}" CT_Pushd "${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}" CT_Patch nochdir "${CT_LIBC}" "${CT_LIBC_VERSION}" # Extract the add-opns for addon in $(do_libc_add_ons_list " "); do # If the addon was bundled with the main archive, we do not # need to extract it. Worse, if we were to try to extract # it, we'd get an error. if [ -d "${addon}" ]; then CT_DoLog DEBUG "Add-on already present, spkipping extraction" continue fi CT_Extract nochdir "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" CT_TestAndAbort "Error in add-on '${addon}': both short and long names in tarball" \ -d "${addon}" -a -d "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" # Some addons have the 'long' name, while others have the # 'short' name, but patches are non-uniformly built with # either the 'long' or 'short' name, whatever the addons name # but we prefer the 'short' name and avoid duplicates. if [ -d "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" ]; then CT_DoExecLog FILE mv "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" "${addon}" fi CT_DoExecLog FILE ln -s "${addon}" "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" CT_Patch nochdir "${CT_LIBC}" "${addon}-${CT_LIBC_VERSION}" # Remove the long name since it can confuse configure scripts to run # the same source twice. rm "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" done # The configure files may be older than the configure.in files # if using a snapshot (or even some tarballs). Fake them being # up to date. find . -type f -name configure -exec touch {} \; 2>&1 |CT_DoLog ALL CT_Popd if [ "${CT_LIBC_LOCALES}" = "y" ]; then do_libc_locales_extract fi } # Build and install headers and start files do_libc_start_files() { # Start files and Headers should be configured the same way as the # final libc, but built and installed differently. do_libc_backend libc_mode=startfiles } # This function builds and install the full C library do_libc() { do_libc_backend libc_mode=final } # This backend builds the C library once for each multilib # variant the compiler gives us # Usage: do_libc_backend param=value [...] # Parameter : Definition : Type : Default # libc_mode : 'startfiles' or 'final' : string : (none) do_libc_backend() { local libc_mode local -a multilibs local multilib local multi_dir local multi_flags local extra_dir local libc_headers libc_startfiles libc_full local hdr local arg for arg in "$@"; do eval "${arg// /\\ }" done case "${libc_mode}" in startfiles) CT_DoStep INFO "Installing C library headers & start files" hdr=y libc_startfiles=y libc_full= ;; final) CT_DoStep INFO "Installing C library" hdr= libc_startfiles= libc_full=y ;; *) CT_Abort "Unsupported (or unset) libc_mode='${libc_mode}'";; esac # If gcc is not configured for multilib, it still prints # a single line for the default settings multilibs=( $("${CT_TARGET}-gcc" -print-multi-lib 2>/dev/null) ) for multilib in "${multilibs[@]}"; do multi_dir="${multilib%%;*}" if [ "${multi_dir}" != "." ]; then CT_DoStep INFO "Building for multilib subdir='${multi_dir}'" extra_flags="$( echo "${multilib#*;}" \ |${sed} -r -e 's/@/ -/g;' \ )" extra_dir="/${multi_dir}" # glibc install its files in ${extra_dir}/{usr/,}lib # while gcc expects them in {,usr/}lib/${extra_dir}. # Prepare some symlinks so glibc installs in fact in # the proper place # We do it in the start-files step, so it is not needed # to do it in the final step, as the symlinks will # already exist if [ "${libc_mode}" = "startfiles" ]; then CT_Pushd "${CT_SYSROOT_DIR}" CT_DoExecLog ALL mkdir -p "lib/${multi_dir}" \ "usr/lib/${multi_dir}" \ "${multi_dir}" \ "${multi_dir}/usr" CT_DoExecLog ALL ln -sf "../lib/${multi_dir}" "${multi_dir}/lib" CT_DoExecLog ALL ln -sf "../../usr/lib/${multi_dir}" "${multi_dir}/usr/lib" CT_Popd fi libc_headers= else extra_dir= extra_flags= libc_headers="${hdr}" fi CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}${extra_dir//\//_}" do_libc_backend_once extra_dir="${extra_dir}" \ extra_flags="${extra_flags}" \ libc_headers="${libc_headers}" \ libc_startfiles="${libc_startfiles}" \ libc_full="${libc_full}" CT_Popd if [ "${multi_dir}" != "." ]; then if [ "${libc_mode}" = "final" ]; then CT_DoLog EXTRA "Fixing up multilib location" # rewrite the library multiplexers for d in "lib/${multi_dir}" "usr/lib/${multi_dir}"; do for l in libc libpthread libgcc_s; do if [ -f "${CT_SYSROOT_DIR}/${d}/${l}.so" \ -a ! -L ${CT_SYSROOT_DIR}/${d}/${l}.so ] then CT_DoExecLog DEBUG ${sed} -r -i \ -e "s:/lib/:/lib/${multi_dir}/:g;" \ "${CT_SYSROOT_DIR}/${d}/${l}.so" fi done done # Remove the multi_dir now it is no longer useful CT_DoExecLog DEBUG rm -rf "${CT_SYSROOT_DIR}/${multi_dir}" fi # libc_mode == final CT_EndStep fi done CT_EndStep } # This backend builds the C library once # Usage: do_libc_backend_once param=value [...] # Parameter : Definition : Type : Default # libc_headers : Build libc headers : bool : n # libc_startfiles : Build libc start-files : bool : n # libc_full : Build full libc : bool : n # extra_flags : Extra CFLAGS to use (for multilib) : string : (empty) # extra_dir : Extra subdir for multilib : string : (empty) do_libc_backend_once() { local libc_headers local libc_startfiles local libc_full local extra_flags local extra_dir local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}" local extra_cc_args local -a extra_config local -a extra_make_args local glibc_cflags local float_extra local endian_extra local arg for arg in "$@"; do eval "${arg// /\\ }" done CT_DoLog EXTRA "Configuring C library" case "${CT_LIBC}" in eglibc) if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config fi if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then OPTIMIZE=-Os else OPTIMIZE=-O2 fi ;; glibc) # glibc can't be built without -O2 (reference needed!) OPTIMIZE=-O2 # Also, if those two are missing, iconv build breaks extra_config+=( --disable-debug --disable-sanity-checks ) ;; esac # Add some default glibc config options if not given by user. # We don't need to be conditional on wether the user did set different # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY is passed after # extra_config extra_config+=("$(do_libc_min_kernel_config)") case "${CT_THREADS}" in nptl) extra_config+=("--with-__thread" "--with-tls");; linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");; none) extra_config+=("--without-__thread" "--without-nptl") case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in *-tls*) ;; *) extra_config+=("--without-tls");; esac ;; esac case "${CT_SHARED_LIBS}" in y) extra_config+=("--enable-shared");; *) extra_config+=("--disable-shared");; esac float_extra="$( echo "${extra_flags}" \ |${sed} -r -e '/^(.*[[:space:]])?-m(hard|soft)-float([[:space:]].*)?$/!d;' \ -e 's//\2/;' \ )" case "${float_extra}" in hard) extra_config+=("--with-fp");; soft) extra_config+=("--without-fp");; "") case "${CT_ARCH_FLOAT}" in hard|softfp) extra_config+=("--with-fp");; soft) extra_config+=("--without-fp");; esac ;; esac if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then extra_config+=("--disable-versioning") fi if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}") fi case "$(do_libc_add_ons_list ,)" in "") extra_config+=("--enable-add-ons=no");; *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");; esac if [ "${CT_LIBC_EGLIBC_HAS_PKGVERSION_BUGURL}" = "y" ]; then extra_config+=("--with-pkgversion=${CT_PKGVERSION}") [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}") fi # Extract the endianness options if any # This should cover all possible endianness options # in gcc, but it is prone to bit-rot... :-( endian_extra="$( echo "${extra_flags}" \ |${sed} -r -e '/^(.*[[:space:]])?-(E[BL]|m((big|little)(-endian)?|e?[bl]))([[:space:]].*)?$/!d;' \ -e 's//\2/;' \ )" case "${endian_extra}" in EB|mbig-endian|mbig|meb|mb) extra_cc_args="${extra_cc_args} ${endian_extra}" ;; EL|mlittle-endian|mlittle|mel|ml) extra_cc_args="${extra_cc_args} ${endian_extra}" ;; "") extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}" ;; esac touch config.cache if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then echo "libc_cv_forced_unwind=yes" >>config.cache echo "libc_cv_c_cleanup=yes" >>config.cache fi # Pre-seed the configparms file with values from the config option printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms cross_cc=$(CT_Which "${CT_TARGET}-gcc") extra_cc_args+=" ${extra_flags}" case "${CT_LIBC_ENABLE_FORTIFIED_BUILD}" in y) ;; *) glibc_cflags+=" -U_FORTIFY_SOURCE";; esac glibc_cflags+=" ${CT_TARGET_CFLAGS} ${OPTIMIZE} ${CT_LIBC_GLIBC_EXTRA_CFLAGS}" # ./configure is mislead by our tools override wrapper for bash # so just tell it where the real bash is _on_the_target_! # Notes: # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL # - ${BASH_SHELL} is only used to set BASH # - ${BASH} is only used to set the shebang # in two scripts to run on the target # So we can safely bypass bash detection at compile time. # Should this change in a future eglibc release, we'd better # directly mangle the generated scripts _after_ they get built, # or even after they get installed... echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache # Configure with --prefix the way we want it on the target... # There are a whole lot of settings here. You'll probably want # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG_ARRAY # Compare these options with the ones used when installing the glibc headers above - they're different. # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory" # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html. # Set BUILD_CC, or we won't be able to build datafiles # Run explicitly through CONFIG_SHELL, or the build breaks badly (loop-of-death) # when the shell is not bash... Sigh... :-( CT_DoLog DEBUG "Using gcc for target : '${cross_cc}'" CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'" CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'" CT_DoLog DEBUG "Extra CC args passed : '${glibc_cflags}'" CT_DoLog DEBUG "Extra flags (multilib) : '${extra_flags}'" CT_DoExecLog CFG \ BUILD_CC="${CT_BUILD}-gcc" \ CFLAGS="${glibc_cflags}" \ CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \ AR=${CT_TARGET}-ar \ RANLIB=${CT_TARGET}-ranlib \ "${CONFIG_SHELL}" \ "${src_dir}/configure" \ --prefix=/usr \ --build=${CT_BUILD} \ --host=${CT_TARGET} \ --cache-file="$(pwd)/config.cache" \ --without-cvs \ --disable-profile \ --without-gd \ --with-headers="${CT_HEADERS_DIR}" \ "${extra_config[@]}" \ "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[@]}" # build hacks case "${CT_ARCH},${CT_ARCH_CPU}" in powerpc,8??) # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)" extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" ) ;; esac if [ "${libc_headers}" = "y" ]; then CT_DoLog EXTRA "Installing C library headers" # use the 'install-headers' makefile target to install the # headers CT_DoExecLog ALL make ${JOBSFLAGS} \ install_root=${CT_SYSROOT_DIR}${extra_dir} \ install-bootstrap-headers=yes \ "${extra_make_args[@]}" \ install-headers # For glibc, a few headers need to be manually installed if [ "${CT_LIBC}" = "glibc" ]; then # Two headers -- stubs.h and features.h -- aren't installed by install-headers, # so do them by hand. We can tolerate an empty stubs.h for the moment. # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html mkdir -p "${CT_HEADERS_DIR}/gnu" CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h" CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h" \ "${CT_HEADERS_DIR}/features.h" # Building the bootstrap gcc requires either setting inhibit_libc, or # having a copy of stdio_lim.h... see # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h" # Following error building gcc-4.0.0's gcj: # error: bits/syscall.h: No such file or directory # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html case "${CT_ARCH}" in arm) ;; *) CT_DoExecLog ALL cp -v "misc/syscall-list.h" \ "${CT_HEADERS_DIR}/bits/syscall.h" ;; esac fi fi # libc_headers == y if [ "${libc_startfiles}" = "y" ]; then if [ "${CT_THREADS}" = "nptl" ]; then CT_DoLog EXTRA "Installing C library start files" # there are a few object files needed to link shared libraries, # which we build and install by hand CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}${extra_dir}/usr/lib" CT_DoExecLog ALL make ${JOBSFLAGS} \ "${extra_make_args[@]}" \ csu/subdir_lib CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \ "${CT_SYSROOT_DIR}${extra_dir}/usr/lib" # Finally, 'libgcc_s.so' requires a 'libc.so' to link against. # However, since we will never actually execute its code, # it doesn't matter what it contains. So, treating '/dev/null' # as a C source file, we produce a dummy 'libc.so' in one step CT_DoExecLog ALL "${cross_cc}" -nostdlib \ -nostartfiles \ -shared \ -x c /dev/null \ -o "${CT_SYSROOT_DIR}${extra_dir}/usr/lib/libc.so" fi # threads == nptl fi # libc_headers == y if [ "${libc_full}" = "y" ]; then CT_DoLog EXTRA "Building C library" CT_DoExecLog ALL make ${JOBSFLAGS} \ "${extra_make_args[@]}" \ all CT_DoLog EXTRA "Installing C library" CT_DoExecLog ALL make ${JOBSFLAGS} \ "${extra_make_args[@]}" \ install_root="${CT_SYSROOT_DIR}${extra_dir}" \ install if [ "${CT_BUILD_MANUALS}" = "y" ]; then CT_DoLog EXTRA "Building and installing the C library manual" # Omit JOBSFLAGS as GLIBC has problems building the # manuals in parallel CT_DoExecLog ALL make pdf html # EGLIBC doesn't have a install-{pdf.html}, and older # versions leave the manuals in the source directory CT_DoExecLog ALL mkdir -p ${CT_PREFIX_DIR}/share/doc if [ ${CT_LIBC_EGLIBC_2_16_or_later} = "y" ]; then CT_DoExecLog ALL cp -av manual/*.pdf manual/libc \ ${CT_PREFIX_DIR}/share/doc else CT_DoExecLog ALL cp -av ${src_dir}/manual/*.pdf ${src_dir}/manual/libc \ ${CT_PREFIX_DIR}/share/doc fi fi if [ "${CT_LIBC_LOCALES}" = "y" ]; then do_libc_locales fi fi # libc_full == y } # This function finishes the C library install # This is a no-op do_libc_finish() { : } # Build up the addons list, separated with $1 do_libc_add_ons_list() { local sep="$1" local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}" \ |sed -r -e "s/[[:space:],]/${sep}/g;" \ )" case "${CT_THREADS}" in none) ;; *) addons_list="${addons_list}${sep}${CT_THREADS}";; esac [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports" # Remove duplicate, leading and trailing separators echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;" } # Compute up the minimum supported Linux kernel version do_libc_min_kernel_config() { local min_kernel_config case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in *--enable-kernel*) ;; *) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then # We can't rely on the kernel version from the configuration, # because it might not be available if the user uses pre-installed # headers. On the other hand, both method will have the kernel # version installed in "usr/include/linux/version.h" in the sysroot. # Parse that instead of having two code-paths. version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h" if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then CT_Abort "Linux version is unavailable in installed headers files" fi version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \ |cut -d ' ' -f 3 \ )" version=$(((version_code>>16)&0xFF)) patchlevel=$(((version_code>>8)&0xFF)) sublevel=$((version_code&0xFF)) min_kernel_config="${version}.${patchlevel}.${sublevel}" elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then # Trim the fourth part of the linux version, keeping only the first three numbers min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \ |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \ )" fi echo "--enable-kernel=${min_kernel_config}" ;; esac }