# 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 do_libc_get() { local date local version local -a addons_list addons_list=($(do_libc_add_ons_list " ")) # Main source if [ "${CT_LIBC_GLIBC_CUSTOM}" = "y" ]; then CT_GetCustom "glibc" "${CT_LIBC_GLIBC_CUSTOM_VERSION}" \ "${CT_LIBC_GLIBC_CUSTOM_LOCATION}" else case "${CT_LIBC_VERSION}" in linaro-*) CT_GetLinaro "glibc" "${CT_LIBC_VERSION}" ;; *) CT_GetFile "glibc-${CT_LIBC_VERSION}" \ {http,ftp,https}://ftp.gnu.org/gnu/glibc \ ftp://{sourceware.org,gcc.gnu.org}/pub/glibc/{releases,snapshots} ;; esac fi # C library addons for addon in "${addons_list[@]}"; do # Never ever try to download these add-ons, # they've always been internal case "${addon}" in nptl) continue;; esac case "${addon}:${CT_LIBC_GLIBC_PORTS_EXTERNAL}" in ports:y) ;; ports:*) continue;; esac if ! CT_GetFile "glibc-${addon}-${CT_LIBC_VERSION}" \ http://mirrors.kernel.org/sourceware/glibc \ {http,ftp,https}://ftp.gnu.org/gnu/glibc \ ftp://{sourceware.org,gcc.gnu.org}/pub/glibc/{releases,snapshots} then # Some add-ons are bundled with glibc, others are # bundled in their own tarball. Eg. NPTL is internal, # while LinuxThreads was external. Also, for old # versions of glibc, the libidn add-on was external, # but with version >=2.10, it is internal. CT_DoLog DEBUG "Addon '${addon}' could not be downloaded." CT_DoLog DEBUG "We'll see later if we can find it in the source tree" fi done return 0 } do_libc_extract() { local addon CT_Extract "${CT_LIBC}-${CT_LIBC_VERSION}" CT_Pushd "${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}" # Custom glibc won't get patched, because CT_GetCustom # marks custom glibc as patched. CT_Patch nochdir "${CT_LIBC}" "${CT_LIBC_VERSION}" 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 '${addon}' already present, skipping extraction" continue fi CT_Extract nochdir "${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 } # 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 } do_libc_post_cc() { : } # 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 arg for arg in "$@"; do eval "${arg// /\\ }" done case "${libc_mode}" in startfiles) CT_DoStep INFO "Installing C library headers & start files" ;; final) CT_DoStep INFO "Installing C library" ;; *) CT_Abort "Unsupported (or unset) libc_mode='${libc_mode}'" ;; esac CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}" CT_IterateMultilibs do_libc_backend_once multilib libc_mode="${libc_mode}" CT_Popd CT_EndStep } # This backend builds the C library once # Usage: do_libc_backend_once param=value [...] # Parameter : Definition : Type # libc_mode : 'startfiles' or 'final' : string : (empty) # multi_* : as defined in CT_IterateMultilibs : (varies) : do_libc_backend_once() { local multi_flags multi_dir multi_os_dir multi_root multi_index multi_count local build_cflags build_cppflags build_ldflags local startfiles_dir local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}" 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 # 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. We do need to handle multilib-os # here, though, for the first pass where we install crt*.o and a dummy # libc.so; we therefore install it to the most specific location of # //usr/lib/ where it is least likely to clash # with other multilib variants. We then remove these temporary files at # the beginning of the libc-final step and allow glibc to install them # where it thinks is proper. startfiles_dir="${multi_root}/usr/lib/${multi_os_dir}" CT_SanitizeVarDir startfiles_dir if [ "${libc_mode}" = "final" ]; then CT_DoLog EXTRA "Cleaning up start files" CT_DoExecLog ALL rm -f "${startfiles_dir}/crt1.o" \ "${startfiles_dir}/crti.o" \ "${startfiles_dir}/crtn.o" \ "${startfiles_dir}/libc.so" fi CT_DoLog EXTRA "Configuring C library" # Also, if those two are missing, iconv build breaks extra_config+=( --disable-debug --disable-sanity-checks ) # always include rpc, the user can still override it with TI-RPC extra_config+=( --enable-obsolete-rpc ) # Add some default glibc config options if not given by user. # We don't need to be conditional on whether the user did set different # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY is passed after # extra_config extra_config+=("$(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 "${CT_SHARED_LIBS}" in y) extra_config+=("--enable-shared");; *) extra_config+=("--disable-shared");; esac if [ "${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 extra_config+=("--with-pkgversion=${CT_PKGVERSION}") [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}") touch config.cache if [ "${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 "%s\n" "${CT_LIBC_GLIBC_CONFIGPARMS}" > configparms # glibc can't be built without -O2 (reference needed!) glibc_cflags+=" -O2" case "${CT_LIBC_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_TARGET_CFLAGS}" glibc_cflags+=" ${CT_LIBC_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 # ./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 # - ${BASH} is only used to set the shebang # in two scripts to run on the target # So we can safely bypass bash detection at compile time. # Should this change in a future glibc release, we'd better # directly mangle the generated scripts _after_ they get built, # or even after they get installed... echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache # Configure with --prefix the way we want it on the target... # There are a whole lot of settings here. You'll probably want # to read up on what they all mean, and customize a bit, possibly # by setting GLIBC_EXTRA_CONFIG_ARRAY. # Compare these options with the ones used when installing # the glibc headers above - they're different. # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: # gd.h: No such file or directory" # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html. # Set BUILD_CC, or we won't be able to build datafiles # Run explicitly through CONFIG_SHELL, or the build breaks badly (loop-of-death) # when the shell is not bash... Sigh... :-( CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'" CT_DoLog DEBUG "Extra config args passed : '${extra_config[*]}'" CT_DoLog DEBUG "Extra CFLAGS passed : '${glibc_cflags}'" CT_DoLog DEBUG "Placing startfiles into : '${startfiles_dir}'" CT_DoLog DEBUG "Configuring with --host : '${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. CT_DoExecLog CFG \ BUILD_CC=${CT_BUILD}-gcc \ CC="${CT_TARGET}-${CT_CC} ${glibc_cflags}" \ AR=${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[@]}" \ "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[@]}" # build hacks case "${CT_ARCH},${CT_ARCH_CPU}" in powerpc,8??) # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)" extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" ) ;; esac build_cflags="${CT_CFLAGS_FOR_BUILD}" build_cppflags= build_ldflags="${CT_LDFLAGS_FOR_BUILD}" case "$CT_BUILD" in *mingw*|*cygwin*|*msys*|*darwin*) # 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="${build_ldflags} -lintl -liconv" ;; esac extra_make_args+=( "BUILD_CFLAGS=${build_cflags}" ) extra_make_args+=( "BUILD_CPPFLAGS=${build_cppflags}" ) extra_make_args+=( "BUILD_LDFLAGS=${build_ldflags}" ) if [ "${libc_mode}" = "startfiles" -a ! -r "${multi_root}/.libc_headers_installed" ]; then CT_DoLog EXTRA "Installing C library headers" CT_DoExecLog ALL touch "${multi_root}/.libc_headers_installed" # use the 'install-headers' makefile target to install the # headers CT_DoExecLog ALL make ${JOBSFLAGS} \ install_root=${multi_root} \ 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 # Of course, only copy it if it does not already exist case "${CT_ARCH}" in arm) ;; *) if [ -f "${CT_HEADERS_DIR}/bits/syscall.h" ]; then CT_DoLog ALL "Not over-writing existing bits/syscall.h" elif [ -f "misc/bits/syscall.h" ]; then CT_DoExecLog ALL cp -v "misc/bits/syscall.h" \ "${CT_HEADERS_DIR}/bits/syscall.h" else # "Old" glibces do not have the above file, # but provide this one: CT_DoExecLog ALL cp -v "misc/syscall-list.h" \ "${CT_HEADERS_DIR}/bits/syscall.h" fi ;; esac fi elif [ "${libc_mode}" = "final" -a -r "${multi_root}/.libc_headers_installed" ]; then CT_DoExecLog ALL rm -f "${multi_root}/.libc_headers_installed" fi # installing headers if [ "${libc_mode}" = "startfiles" ]; then if [ "${CT_THREADS}" = "nptl" ]; then CT_DoLog EXTRA "Installing C library start files" # there are a few object files needed to link shared libraries, # which we build and install by hand CT_DoExecLog ALL mkdir -p "${startfiles_dir}" CT_DoExecLog ALL make ${JOBSFLAGS} \ "${extra_make_args[@]}" \ csu/subdir_lib CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \ "${startfiles_dir}" # Finally, 'libgcc_s.so' requires a 'libc.so' to link against. # However, since we will never actually execute its code, # it doesn't matter what it contains. So, treating '/dev/null' # as a C source file, we produce a dummy 'libc.so' in one step CT_DoExecLog ALL "${CT_TARGET}-${CT_CC}" ${multi_flags} \ -nostdlib \ -nostartfiles \ -shared \ -x c /dev/null \ -o "${startfiles_dir}/libc.so" fi # threads == nptl fi # libc_mode = startfiles if [ "${libc_mode}" = "final" ]; 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="${multi_root}" \ install if [ "${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 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_LIBC_LOCALES}" = "y" -a "${multi_index}" = "${multi_count}" ]; then do_libc_locales fi fi # libc_mode = final CT_EndStep } # 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;" \ )" if [ "${CT_LIBC_GLIBC_2_20_or_later}" != "y" ]; then case "${CT_THREADS}" in none) ;; *) addons_list="${addons_list}${sep}${CT_THREADS}";; esac fi [ "${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=${min_kernel_config}" ;; esac } # Build and install the libc locales do_libc_locales() { local src_dir="${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}" local -a extra_config local glibc_cflags mkdir -p "${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 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_LIBC_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 ${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 ${JOBSFLAGS} \ install_root="${CT_SYSROOT_DIR}" \ localedata/install-locales }