1 # This file contains the functions common to glibc and eglibc
3 # Extract the C library tarball(s)
7 # Extract the main tarball
8 CT_Extract "${CT_LIBC}-${CT_LIBC_VERSION}"
9 CT_Pushd "${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
10 CT_Patch nochdir "${CT_LIBC}" "${CT_LIBC_VERSION}"
12 # Extract the add-opns
13 for addon in $(do_libc_add_ons_list " "); do
14 # If the addon was bundled with the main archive, we do not
15 # need to extract it. Worse, if we were to try to extract
16 # it, we'd get an error.
17 if [ -d "${addon}" ]; then
18 CT_DoLog DEBUG "Add-on already present, spkipping extraction"
22 CT_Extract nochdir "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
24 CT_TestAndAbort "Error in add-on '${addon}': both short and long names in tarball" \
25 -d "${addon}" -a -d "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
27 # Some addons have the 'long' name, while others have the
28 # 'short' name, but patches are non-uniformly built with
29 # either the 'long' or 'short' name, whatever the addons name
30 # but we prefer the 'short' name and avoid duplicates.
31 if [ -d "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" ]; then
32 CT_DoExecLog FILE mv "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" "${addon}"
35 CT_DoExecLog FILE ln -s "${addon}" "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
37 CT_Patch nochdir "${CT_LIBC}" "${addon}-${CT_LIBC_VERSION}"
39 # Remove the long name since it can confuse configure scripts to run
40 # the same source twice.
41 rm "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
44 # The configure files may be older than the configure.in files
45 # if using a snapshot (or even some tarballs). Fake them being
47 find . -type f -name configure -exec touch {} \; 2>&1 |CT_DoLog ALL
51 if [ "${CT_LIBC_LOCALES}" = "y" ]; then
52 do_libc_locales_extract
56 # Build and install headers and start files
57 do_libc_start_files() {
58 # Start files and Headers should be configured the same way as the
59 # final libc, but built and installed differently.
60 do_libc_backend libc_mode=startfiles
63 # This function builds and install the full C library
65 do_libc_backend libc_mode=final
68 # This backend builds the C library once for each multilib
69 # variant the compiler gives us
70 # Usage: do_libc_backend param=value [...]
71 # Parameter : Definition : Type : Default
72 # libc_mode : 'startfiles' or 'final' : string : (none)
86 case "${libc_mode}" in
87 startfiles) CT_DoStep INFO "Installing C library headers & start files";;
88 final) CT_DoStep INFO "Installing C library";;
89 *) CT_Abort "Unsupported (or unset) libc_mode='${libc_mode}'";;
92 # If gcc is not configured for multilib, it still prints
93 # a single line for the default settings
94 multilibs=( $("${CT_TARGET}-gcc" -print-multi-lib 2>/dev/null) )
95 for multilib in "${multilibs[@]}"; do
96 multi_dir="${multilib%%;*}"
97 if [ "${multi_dir}" != "." ]; then
98 CT_DoStep INFO "Building for multilib subdir='${multi_dir}'"
100 extra_flags="$( echo "${multilib#*;}" \
101 |${sed} -r -e 's/@/ -/g;' \
103 extra_dir="/${multi_dir}"
105 # glibc install its files in ${extra_dir}/{usr/,}lib
106 # while gcc expects them in {,usr/}lib/${extra_dir}.
107 # Prepare some symlinks so glibc installs in fact in
109 # We do it in the start-files step, so it is not needed
110 # to do it in the final step, as the symlinks will
112 if [ "${libc_mode}" = "startfiles" ]; then
113 CT_Pushd "${CT_SYSROOT_DIR}"
114 CT_DoExecLog ALL mkdir -p "lib/${multi_dir}" \
115 "usr/lib/${multi_dir}" \
118 CT_DoExecLog ALL ln -sf "../lib/${multi_dir}" "${multi_dir}/lib"
119 CT_DoExecLog ALL ln -sf "../../usr/lib/${multi_dir}" "${multi_dir}/usr/lib"
127 mkdir -p "${CT_BUILD_DIR}/build-libc-${libc_mode}${extra_dir//\//_}"
128 CT_Pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}${extra_dir//\//_}"
130 do_libc_backend_once extra_dir="${extra_dir}" \
131 extra_flags="${extra_flags}" \
136 if [ "${multi_dir}" != "." ]; then
137 if [ "${libc_mode}" = "final" ]; then
138 CT_DoLog EXTRA "Fixing up multilib location"
140 # rewrite the library multiplexers
141 for d in "lib/${multi_dir}" "usr/lib/${multi_dir}"; do
142 for l in libc libpthread libgcc_s; do
143 if [ -f "${CT_SYSROOT_DIR}/${d}/${l}.so" \
144 -a ! -L ${CT_SYSROOT_DIR}/${d}/${l}.so ]
146 CT_DoExecLog DEBUG ${sed} -r -i \
147 -e "s:/lib/:/lib/${multi_dir}/:g;" \
148 "${CT_SYSROOT_DIR}/${d}/${l}.so"
152 fi # libc_mode == final
160 # This backend builds the C library once
161 # Usage: do_libc_backend_once param=value [...]
162 # Parameter : Definition : Type : Default
163 # libc_mode : 'startfiles' or 'final' : string : (none)
164 # extra_flags : Extra CFLAGS to use (for multilib) : string : (empty)
165 # extra_dir : Extra subdir for multilib : string : (empty)
166 do_libc_backend_once() {
170 local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
172 local -a extra_config
173 local -a extra_make_args
178 while [ $# -ne 0 ]; do
183 CT_DoLog EXTRA "Configuring C library"
187 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
188 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
190 if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
197 # glibc can't be built without -O2 (reference needed!)
199 # Also, if those two are missing, iconv build breaks
200 extra_config+=( --disable-debug --disable-sanity-checks )
204 # Add some default glibc config options if not given by user.
205 # We don't need to be conditional on wether the user did set different
206 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY is passed after
209 extra_config+=("$(do_libc_min_kernel_config)")
211 case "${CT_THREADS}" in
212 nptl) extra_config+=("--with-__thread" "--with-tls");;
213 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
214 none) extra_config+=("--without-__thread" "--without-nptl")
215 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
217 *) extra_config+=("--without-tls");;
222 case "${CT_SHARED_LIBS}" in
223 y) extra_config+=("--enable-shared");;
224 *) extra_config+=("--disable-shared");;
227 float_extra="$( echo "${extra_flags}" \
228 |${sed} -r -e '/^(.*[[:space:]])?-m(hard|soft)-float([[:space:]].*)?$/!d;' \
231 case "${float_extra}" in
232 hard) extra_config+=("--with-fp");;
233 soft) extra_config+=("--without-fp");;
235 case "${CT_ARCH_FLOAT}" in
236 hard|softfp) extra_config+=("--with-fp");;
237 soft) extra_config+=("--without-fp");;
242 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
243 extra_config+=("--disable-versioning")
246 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
247 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
250 case "$(do_libc_add_ons_list ,)" in
251 "") extra_config+=("--enable-add-ons=no");;
252 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
255 if [ "${CT_LIBC_EGLIBC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
256 extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
257 [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
260 # Extract the endianness options if any
261 # This should cover all possible endianness options
262 # in gcc, but it is prone to bit-rot... :-(
263 endian_extra="$( echo "${extra_flags}" \
264 |${sed} -r -e '/^(.*[[:space:]])?-(E[BL]|m((big|little)(-endian)?|e?[bl]))([[:space:]].*)?$/!d;' \
267 case "${endian_extra}" in
268 EB|mbig-endian|mbig|meb|mb)
269 extra_cc_args="${extra_cc_args} ${endian_extra}"
271 EL|mlittle-endian|mlittle|mel|ml)
272 extra_cc_args="${extra_cc_args} ${endian_extra}"
274 "") extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
279 if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
280 echo "libc_cv_forced_unwind=yes" >>config.cache
281 echo "libc_cv_c_cleanup=yes" >>config.cache
284 # Pre-seed the configparms file with values from the config option
285 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
287 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
288 extra_cc_args+=" ${extra_flags}"
290 CT_DoLog DEBUG "Using gcc for target : '${cross_cc}'"
291 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
292 CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
293 CT_DoLog DEBUG "Extra CC args passed : '${extra_cc_args}'"
294 CT_DoLog DEBUG "Extra flags (multilib) : '${extra_flags}'"
296 glibc_cflags="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}"
297 case "${CT_LIBC_ENABLE_FORTIFIED_BUILD}" in
299 *) glibc_cflags+=" -U_FORTIFY_SOURCE";;
302 # ./configure is mislead by our tools override wrapper for bash
303 # so just tell it where the real bash is _on_the_target_!
305 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
306 # - ${BASH_SHELL} is only used to set BASH
307 # - ${BASH} is only used to set the shebang
308 # in two scripts to run on the target
309 # So we can safely bypass bash detection at compile time.
310 # Should this change in a future eglibc release, we'd better
311 # directly mangle the generated scripts _after_ they get built,
312 # or even after they get installed... eglibc is such a sucker...
313 echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
315 # Configure with --prefix the way we want it on the target...
316 # There are a whole lot of settings here. You'll probably want
317 # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG_ARRAY
318 # Compare these options with the ones used when installing the glibc headers above - they're different.
319 # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
320 # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
321 # Set BUILD_CC, or we won't be able to build datafiles
322 # Run explicitly through CONFIG_SHELL, or the build breaks badly (loop-of-death)
323 # when the shell is not bash... Sigh... :-(
326 BUILD_CC="${CT_BUILD}-gcc" \
327 CFLAGS="${glibc_cflags}" \
328 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
330 RANLIB=${CT_TARGET}-ranlib \
332 "${src_dir}/configure" \
334 --build=${CT_BUILD} \
335 --host=${CT_TARGET} \
336 --cache-file="$(pwd)/config.cache" \
340 --with-headers="${CT_HEADERS_DIR}" \
341 "${extra_config[@]}" \
342 "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[@]}"
345 case "${CT_ARCH},${CT_ARCH_CPU}" in
347 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
348 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
349 extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
353 if [ "${libc_mode}" = "startfiles" ]; then
354 CT_DoLog EXTRA "Installing C library headers"
356 # use the 'install-headers' makefile target to install the
358 CT_DoExecLog ALL make ${JOBSFLAGS} \
359 install_root=${CT_SYSROOT_DIR}${extra_dir} \
360 install-bootstrap-headers=yes \
361 "${extra_make_args[@]}" \
364 # For glibc, a few headers need to be manually installed
365 if [ "${CT_LIBC}" = "glibc" ]; then
366 # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
367 # so do them by hand. We can tolerate an empty stubs.h for the moment.
368 # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
369 mkdir -p "${CT_HEADERS_DIR}/gnu"
370 CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
371 CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h" \
372 "${CT_HEADERS_DIR}/features.h"
374 # Building the bootstrap gcc requires either setting inhibit_libc, or
375 # having a copy of stdio_lim.h... see
376 # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
377 CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
379 # Following error building gcc-4.0.0's gcj:
380 # error: bits/syscall.h: No such file or directory
381 # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
382 # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
385 *) CT_DoExecLog ALL cp -v "misc/syscall-list.h" \
386 "${CT_HEADERS_DIR}/bits/syscall.h"
391 if [ "${CT_THREADS}" = "nptl" ]; then
392 CT_DoLog EXTRA "Installing C library start files"
394 # there are a few object files needed to link shared libraries,
395 # which we build and install by hand
396 CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}${extra_dir}/usr/lib"
397 CT_DoExecLog ALL make ${JOBSFLAGS} \
398 "${extra_make_args[@]}" \
400 CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
401 "${CT_SYSROOT_DIR}${extra_dir}/usr/lib"
403 # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.
404 # However, since we will never actually execute its code,
405 # it doesn't matter what it contains. So, treating '/dev/null'
406 # as a C source file, we produce a dummy 'libc.so' in one step
407 CT_DoExecLog ALL "${cross_cc}" -nostdlib \
411 -o "${CT_SYSROOT_DIR}${extra_dir}/usr/lib/libc.so"
413 else # libc_mode = final
414 CT_DoLog EXTRA "Building C library"
415 CT_DoExecLog ALL make ${JOBSFLAGS} \
416 "${extra_make_args[@]}" \
419 CT_DoLog EXTRA "Installing C library"
420 CT_DoExecLog ALL make ${JOBSFLAGS} \
421 "${extra_make_args[@]}" \
422 install_root="${CT_SYSROOT_DIR}${extra_dir}" \
425 if [ "${CT_BUILD_MANUALS}" = "y" ]; then
426 CT_DoLog EXTRA "Building and installing the C library manual"
427 # Omit JOBSFLAGS as GLIBC has problems building the
428 # manuals in parallel
429 CT_DoExecLog ALL make pdf html
430 # EGLIBC doesn't have a install-{pdf.html} and leaves the manuals
431 # in the source directory
432 CT_DoExecLog ALL mkdir -p ${CT_PREFIX_DIR}/share/doc
433 CT_DoExecLog ALL cp -av ${src_dir}/manual/*.pdf ${src_dir}/manual/libc \
434 ${CT_PREFIX_DIR}/share/doc
437 if [ "${CT_LIBC_LOCALES}" = "y" ]; then
443 # This function finishes the C library install
449 # Build up the addons list, separated with $1
450 do_libc_add_ons_list() {
452 local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}" \
453 |sed -r -e "s/[[:space:],]/${sep}/g;" \
455 case "${CT_THREADS}" in
457 *) addons_list="${addons_list}${sep}${CT_THREADS}";;
459 [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
460 # Remove duplicate, leading and trailing separators
461 echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
464 # Compute up the minimum supported Linux kernel version
465 do_libc_min_kernel_config() {
466 local min_kernel_config
468 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
469 *--enable-kernel*) ;;
470 *) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
471 # We can't rely on the kernel version from the configuration,
472 # because it might not be available if the user uses pre-installed
473 # headers. On the other hand, both method will have the kernel
474 # version installed in "usr/include/linux/version.h" in the sysroot.
475 # Parse that instead of having two code-paths.
476 version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
477 if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
478 CT_Abort "Linux version is unavailable in installed headers files"
480 version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
483 version=$(((version_code>>16)&0xFF))
484 patchlevel=$(((version_code>>8)&0xFF))
485 sublevel=$((version_code&0xFF))
486 min_kernel_config="${version}.${patchlevel}.${sublevel}"
487 elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
488 # Trim the fourth part of the linux version, keeping only the first three numbers
489 min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
490 |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
493 echo "--enable-kernel=${min_kernel_config}"