# This file adds functions to build glibc # Copyright 2007 Yann E. MORIN # Licensed under the GPL v2. See COPYING in the root of this package glibc_get() { local date local version CT_Fetch GLIBC return 0 } glibc_extract() { CT_ExtractPatch GLIBC } # This function builds and install the full C library glibc_main() { local arg CT_DoStep INFO "Installing C library" CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc" CT_IterateMultilibs glibc_backend_once multilib CT_Popd CT_EndStep } # This backend builds the C library once # Usage: glibc_backend_once param=value [...] # Parameter : Definition : Type # multi_* : as defined in CT_IterateMultilibs : (varies) : glibc_backend_once() { # Glibc seems to be smart enough to know about the cases that can coexist # in the same root and installs them into proper multilib-os directory; all # we need is to point to the right root. local multi_flags multi_dir multi_os_dir multi_root multi_index multi_count multi_target local build_cflags build_cppflags build_ldflags local src_dir="${CT_SRC_DIR}/glibc" local -a extra_config local -a extra_make_args local glibc_cflags local arg opt for arg in "$@"; do eval "${arg// /\\ }" done CT_DoStep INFO "Building for multilib ${multi_index}/${multi_count}: '${multi_flags}'" # Ensure sysroot (with suffix, if applicable) exists CT_DoExecLog ALL mkdir -p "${multi_root}" # Adjust target tuple according GLIBC quirks CT_DoArchGlibcAdjustTuple multi_target CT_DoLog EXTRA "Configuring C library" # If those two are missing, iconv build breaks extra_config+=( --disable-debug --disable-sanity-checks ) if [ "${CT_GLIBC_ENABLE_OBSOLETE_RPC}" = "y" ]; then extra_config+=( --enable-obsolete-rpc ) fi # Add some default glibc config options if not given by user. # We don't need to be conditional on whether the user did set different # values, as they CT_GLIBC_EXTRA_CONFIG_ARRAY is passed after # extra_config extra_config+=("$(glibc_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_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in *-tls*) ;; *) extra_config+=("--without-tls");; esac ;; esac # FIXME static version of glibc seems to be broken: # build tries to use libc-modules.h which is generated from # soversions.i, which is only created for builds with shared libs. case "${CT_SHARED_LIBS}" in y) extra_config+=("--enable-shared");; *) extra_config+=("--disable-shared");; esac if [ "${CT_GLIBC_DISABLE_VERSIONING}" = "y" ]; then extra_config+=("--disable-versioning") fi if [ "${CT_GLIBC_OLDEST_ABI}" != "" ]; then extra_config+=("--enable-oldest-abi=${CT_GLIBC_OLDEST_ABI}") fi case "$(glibc_add_ons_list ,)" in "") extra_config+=("--enable-add-ons=no");; *) extra_config+=("--enable-add-ons=$(glibc_add_ons_list ,)");; esac [ "${CT_GLIBC_ENABLE_WERROR}" != "y" ] && extra_config+=("--disable-werror") [ -n "${CT_PKGVERSION}" ] && extra_config+=("--with-pkgversion=${CT_PKGVERSION}") [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}") if [ -n "${CT_GLIBC_SSP}" ]; then extra_config+=("--enable-stack-protector=${CT_GLIBC_SSP}") fi touch config.cache # Until it became explicitly controllable with --enable-stack-protector=..., # configure detected GCC support for -fstack-protector{,-strong} and # tried to enable it in some parts of glibc - which then failed to build. if [ -z "${CT_GLIBC_BUILD_SSP}" ]; then echo "libc_cv_ssp=no" >>config.cache echo "libc_cv_ssp_strong=no" >>config.cache fi if [ "${CT_GLIBC_FORCE_UNWIND}" = "y" ]; then echo "libc_cv_forced_unwind=yes" >>config.cache echo "libc_cv_c_cleanup=yes" >>config.cache fi # Pre-seed the configparms file with values from the config option printf "%s\n" "${CT_GLIBC_CONFIGPARMS}" > configparms # glibc can't be built without -O2 (reference needed!) glibc_cflags+=" -g -O2" if [ "${CT_GLIBC_ENABLE_COMMON_FLAG}" = "y" ]; then glibc_cflags+=" -fcommon" fi case "${CT_GLIBC_ENABLE_FORTIFIED_BUILD}" in y) ;; *) glibc_cflags+=" -U_FORTIFY_SOURCE";; esac # In the order of increasing precedence. Flags common to compiler and linker. glibc_cflags+=" ${CT_ALL_TARGET_CFLAGS}" glibc_cflags+=" ${CT_GLIBC_EXTRA_CFLAGS}" glibc_cflags+=" ${multi_flags}" # Analyze the resulting options for any extra configure switches to throw in. for opt in ${glibc_cflags}; do case ${opt} in -mhard-float|-mfloat-abi=hard|-mfloat-abi=softfp|-mno-soft-float|-mfpu) extra_config+=("--with-fp") ;; -msoft-float|-mfloat-abi=soft|-mno-float|-mno-fpu) extra_config+=("--without-fp") ;; esac done CT_DoArchGlibcAdjustConfigure extra_config "${glibc_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 # - ${BASH} is only used to set the shebang # in two scripts to run on the target # So we can safely bypass bash detection at compile time. # Should this change in a future glibc release, we'd better # directly mangle the generated scripts _after_ they get built, # or even after they get installed... echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache CT_SymlinkToolsMultilib # Configure with --prefix the way we want it on the target... # There are a whole lot of settings here. You'll probably want # to read up on what they all mean, and customize a bit, possibly # by setting GLIBC_EXTRA_CONFIG_ARRAY. # Compare these options with the ones used when installing # the glibc headers above - they're different. # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: # gd.h: No such file or directory" # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html. # Set BUILD_CC, or we won't be able to build datafiles # Run explicitly through CONFIG_SHELL, or the build breaks badly (loop-of-death) # when the shell is not bash... Sigh... :-( CT_DoLog DEBUG "Configuring with addons : '$(glibc_add_ons_list ,)'" CT_DoLog DEBUG "Extra config args passed : '${extra_config[*]}'" CT_DoLog DEBUG "Extra CFLAGS passed : '${glibc_cflags}'" CT_DoLog DEBUG "Configuring with --host : '${multi_target}'" # CFLAGS are only applied when compiling .c files. .S files are compiled with ASFLAGS, # but they are not passed by configure. Thus, pass everything in CC instead. # The CFLAGS variable needs to be cleared, else the default "-g -O2" # would override previous flags. CT_DoExecLog CFG \ BUILD_CC=${CT_BUILD}-gcc \ CC="${CT_TARGET}-${CT_CC} ${glibc_cflags}" \ CFLAGS="" \ AR=${CT_TARGET}-ar \ RANLIB=${CT_TARGET}-ranlib \ "${CONFIG_SHELL}" \ "${src_dir}/configure" \ --prefix=/usr \ --build=${CT_BUILD} \ --host=${multi_target} \ --cache-file="$(pwd)/config.cache" \ --without-cvs \ --disable-profile \ --without-gd \ --with-headers="${CT_HEADERS_DIR}" \ "${extra_config[@]}" \ "${CT_GLIBC_EXTRA_CONFIG_ARRAY[@]}" # build hacks # Mask C++ compiler. Glibc 2.29+ attempts to build some tests using gcc++, but # we haven't built libstdc++ yet. Should really implement #808 after 1.24.0... extra_make_args+=( CXX= ) case "${CT_ARCH},${CT_ARCH_CPU}" in powerpc,8??) # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)" extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" ) ;; esac build_cflags="${CT_CFLAGS_FOR_BUILD}" build_cppflags= build_ldflags="${CT_LDFLAGS_FOR_BUILD}" case "$CT_BUILD" in *mingw*|*cygwin*|*msys*|*darwin*|*freebsd*) # When installing headers on Cygwin, Darwin, MSYS2 and MinGW-w64 sunrpc needs # gettext for building cross-rpcgen. build_cppflags="${build_cppflags} -I${CT_BUILDTOOLS_PREFIX_DIR}/include/" build_ldflags="${build_ldflags} -lintl -liconv" case "$CT_BUILD" in *cygwin*|*freebsd*) # Additionally, stat in FreeBSD, Cygwin, and possibly others # is always 64bit, so replace struct stat64 with stat. build_cppflags="${build_cppflags} -Dstat64=stat" ;; esac ;; esac # Make sure glibc build system respects our provided CFLAGS. extra_make_args+=( default_cflags= ) extra_make_args+=( "BUILD_CFLAGS=${build_cflags}" ) extra_make_args+=( "BUILD_CPPFLAGS=${build_cppflags}" ) extra_make_args+=( "BUILD_LDFLAGS=${build_ldflags}" ) CT_DoLog EXTRA "Building C library" CT_DoExecLog ALL make ${CT_JOBSFLAGS} \ "${extra_make_args[@]}" \ all CT_DoLog EXTRA "Installing C library" CT_DoExecLog ALL make ${CT_JOBSFLAGS} \ "${extra_make_args[@]}" \ install_root="${multi_root}" \ install if [ "${CT_BUILD_MANUALS}" = "y" -a "${multi_index}" = "${multi_count}" ]; then # We only need to build the manuals once. Only build them on the # last multilib target. If it's not multilib, it will happen on the # only target. CT_DoLog EXTRA "Building and installing the C library manual" # Omit CT_JOBSFLAGS as GLIBC has problems building the # manuals in parallel CT_DoExecLog ALL make pdf html CT_DoExecLog ALL mkdir -p ${CT_PREFIX_DIR}/share/doc CT_DoExecLog ALL cp -av manual/*.pdf \ manual/libc \ ${CT_PREFIX_DIR}/share/doc fi if [ "${CT_GLIBC_LOCALES}" = "y" -a "${multi_index}" = "${multi_count}" ]; then glibc_locales fi CT_EndStep } # Build up the addons list, separated with $1 glibc_add_ons_list() { local sep="$1" local addons_list if [ "${CT_GLIBC_USE_NPTL_ADDON}" = "y" ]; then addons_list="${addons_list}${sep}nptl" fi if [ "${CT_GLIBC_USE_LIBIDN_ADDON}" = "y" ]; then addons_list="${addons_list}${sep}libidn" fi echo "${addons_list#${sep}}" # Remove leading separator if any } # Compute up the minimum supported Linux kernel version glibc_min_kernel_config() { local min_kernel_config case "${CT_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in *--enable-kernel*) ;; *) if [ "${CT_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then # TBD do we support that currently? We always seem to install kernel headers # We can't rely on the kernel version from the configuration, # because it might not be available if the user uses pre-installed # headers. On the other hand, both method will have the kernel # version installed in "usr/include/linux/version.h" in the sysroot. # Parse that instead of having two code-paths. version_code_file="${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 [ "${CT_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then # Trim the fourth part of the linux version, keeping only the first three numbers min_kernel_config="$( echo "${CT_GLIBC_MIN_KERNEL_VERSION}" \ |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \ )" fi echo "--enable-kernel=${min_kernel_config}" ;; esac } # Build and install the libc locales glibc_locales() { local src_dir="${CT_SRC_DIR}/glibc" local -a extra_config local glibc_cflags # To build locales, we'd need to build glibc for the build machine. # Bail out if the host is not supported. case "${CT_BUILD}" in *-cygwin|*-darwin*) CT_DoLog EXTRA "Skipping GNU libc locales: incompatible build machine" return ;; esac mkdir -p "${CT_BUILD_DIR}/build-localedef" cd "${CT_BUILD_DIR}/build-localedef" CT_DoLog EXTRA "Configuring C library localedef" # Versions that don't support --with-pkgversion or --with-bugurl will cause # a harmless: `configure: WARNING: unrecognized options: --with-bugurl...` # If it's set, use it, if is a recognized option. if [ ! "${CT_TOOLCHAIN_PKGVERSION}" = "" ]; then [ -n "${CT_PKGVERSION}" ] && extra_config+=("--with-pkgversion=${CT_PKGVERSION}") fi if [ ! "${CT_TOOLCHAIN_BUGURL}" = "" ]; then [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}") fi CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'" glibc_cflags="-O2 -fno-stack-protector" case "${CT_GLIBC_ENABLE_FORTIFIED_BUILD}" in y) ;; *) glibc_cflags+=" -U_FORTIFY_SOURCE";; esac # ./configure is misled 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 # - ${BASH} is only used to set the shebang # in two scripts to run on the target # So we can safely bypass bash detection at compile time. # Should this change in a future glibc release, we'd better # directly mangle the generated scripts _after_ they get built, # or even after they get installed... echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache # Configure with --prefix the way we want it on the target... CT_DoExecLog CFG \ CFLAGS="${glibc_cflags}" \ ${CONFIG_SHELL} \ "${src_dir}/configure" \ --prefix=/usr \ --cache-file="$(pwd)/config.cache" \ --without-cvs \ --disable-profile \ --without-gd \ --disable-debug \ --disable-sanity-checks \ "${extra_config[@]}" CT_DoLog EXTRA "Building C library localedef" CT_DoExecLog ALL make ${CT_JOBSFLAGS} # The target's endianness and uint32_t alignment should be passed as options # to localedef, but glibc's localedef does not support these options, which # means that the locale files generated here will be suitable for the target # only if it has the same endianness and uint32_t alignment as the host's. CT_DoLog EXTRA "Installing C library locales" CT_DoExecLog ALL make ${CT_JOBSFLAGS} \ install_root="${CT_SYSROOT_DIR}" \ localedata/install-locales }