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)
80 local libc_headers libc_startfiles libc_full
88 case "${libc_mode}" in
90 CT_DoStep INFO "Installing C library headers & start files"
96 CT_DoStep INFO "Installing C library"
101 *) CT_Abort "Unsupported (or unset) libc_mode='${libc_mode}'";;
104 # If gcc is not configured for multilib, it still prints
105 # a single line for the default settings
106 multilibs=( $("${CT_TARGET}-gcc" -print-multi-lib 2>/dev/null) )
107 for multilib in "${multilibs[@]}"; do
108 multi_dir="${multilib%%;*}"
109 if [ "${multi_dir}" != "." ]; then
110 CT_DoStep INFO "Building for multilib subdir='${multi_dir}'"
112 extra_flags="$( echo "${multilib#*;}" \
113 |${sed} -r -e 's/@/ -/g;' \
115 extra_dir="/${multi_dir}"
117 # glibc install its files in ${extra_dir}/{usr/,}lib
118 # while gcc expects them in {,usr/}lib/${extra_dir}.
119 # Prepare some symlinks so glibc installs in fact in
121 # We do it in the start-files step, so it is not needed
122 # to do it in the final step, as the symlinks will
124 if [ "${libc_mode}" = "startfiles" ]; then
125 CT_Pushd "${CT_SYSROOT_DIR}"
126 CT_DoExecLog ALL mkdir -p "lib/${multi_dir}" \
127 "usr/lib/${multi_dir}" \
130 CT_DoExecLog ALL ln -sf "../lib/${multi_dir}" "${multi_dir}/lib"
131 CT_DoExecLog ALL ln -sf "../../usr/lib/${multi_dir}" "${multi_dir}/usr/lib"
138 libc_headers="${hdr}"
141 mkdir -p "${CT_BUILD_DIR}/build-libc-${libc_mode}${extra_dir//\//_}"
142 CT_Pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}${extra_dir//\//_}"
144 do_libc_backend_once extra_dir="${extra_dir}" \
145 extra_flags="${extra_flags}" \
146 libc_headers="${libc_headers}" \
147 libc_startfiles="${libc_startfiles}" \
148 libc_full="${libc_full}"
152 if [ "${multi_dir}" != "." ]; then
153 if [ "${libc_mode}" = "final" ]; then
154 CT_DoLog EXTRA "Fixing up multilib location"
156 # rewrite the library multiplexers
157 for d in "lib/${multi_dir}" "usr/lib/${multi_dir}"; do
158 for l in libc libpthread libgcc_s; do
159 if [ -f "${CT_SYSROOT_DIR}/${d}/${l}.so" \
160 -a ! -L ${CT_SYSROOT_DIR}/${d}/${l}.so ]
162 CT_DoExecLog DEBUG ${sed} -r -i \
163 -e "s:/lib/:/lib/${multi_dir}/:g;" \
164 "${CT_SYSROOT_DIR}/${d}/${l}.so"
168 # Remove the multi_dir now it is no longer useful
169 CT_DoExecLog DEBUG rm -rf "${CT_SYSROOT_DIR}/${multi_dir}"
170 fi # libc_mode == final
179 # This backend builds the C library once
180 # Usage: do_libc_backend_once param=value [...]
181 # Parameter : Definition : Type : Default
182 # libc_headers : Build libc headers : bool : n
183 # libc_startfiles : Build libc start-files : bool : n
184 # libc_full : Build full libc : bool : n
185 # extra_flags : Extra CFLAGS to use (for multilib) : string : (empty)
186 # extra_dir : Extra subdir for multilib : string : (empty)
187 do_libc_backend_once() {
189 local libc_startfiles
193 local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
195 local -a extra_config
196 local -a extra_make_args
201 while [ $# -ne 0 ]; do
206 CT_DoLog EXTRA "Configuring C library"
210 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
211 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
213 if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
220 # glibc can't be built without -O2 (reference needed!)
222 # Also, if those two are missing, iconv build breaks
223 extra_config+=( --disable-debug --disable-sanity-checks )
227 # Add some default glibc config options if not given by user.
228 # We don't need to be conditional on wether the user did set different
229 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY is passed after
232 extra_config+=("$(do_libc_min_kernel_config)")
234 case "${CT_THREADS}" in
235 nptl) extra_config+=("--with-__thread" "--with-tls");;
236 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
237 none) extra_config+=("--without-__thread" "--without-nptl")
238 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
240 *) extra_config+=("--without-tls");;
245 case "${CT_SHARED_LIBS}" in
246 y) extra_config+=("--enable-shared");;
247 *) extra_config+=("--disable-shared");;
250 float_extra="$( echo "${extra_flags}" \
251 |${sed} -r -e '/^(.*[[:space:]])?-m(hard|soft)-float([[:space:]].*)?$/!d;' \
254 case "${float_extra}" in
255 hard) extra_config+=("--with-fp");;
256 soft) extra_config+=("--without-fp");;
258 case "${CT_ARCH_FLOAT}" in
259 hard|softfp) extra_config+=("--with-fp");;
260 soft) extra_config+=("--without-fp");;
265 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
266 extra_config+=("--disable-versioning")
269 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
270 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
273 case "$(do_libc_add_ons_list ,)" in
274 "") extra_config+=("--enable-add-ons=no");;
275 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
278 if [ "${CT_LIBC_EGLIBC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
279 extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
280 [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
283 # Extract the endianness options if any
284 # This should cover all possible endianness options
285 # in gcc, but it is prone to bit-rot... :-(
286 endian_extra="$( echo "${extra_flags}" \
287 |${sed} -r -e '/^(.*[[:space:]])?-(E[BL]|m((big|little)(-endian)?|e?[bl]))([[:space:]].*)?$/!d;' \
290 case "${endian_extra}" in
291 EB|mbig-endian|mbig|meb|mb)
292 extra_cc_args="${extra_cc_args} ${endian_extra}"
294 EL|mlittle-endian|mlittle|mel|ml)
295 extra_cc_args="${extra_cc_args} ${endian_extra}"
297 "") extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
302 if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
303 echo "libc_cv_forced_unwind=yes" >>config.cache
304 echo "libc_cv_c_cleanup=yes" >>config.cache
307 # Pre-seed the configparms file with values from the config option
308 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
310 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
311 extra_cc_args+=" ${extra_flags}"
313 case "${CT_LIBC_ENABLE_FORTIFIED_BUILD}" in
315 *) glibc_cflags+=" -U_FORTIFY_SOURCE";;
317 glibc_cflags+=" ${CT_TARGET_CFLAGS} ${OPTIMIZE} ${CT_LIBC_GLIBC_EXTRA_CFLAGS}"
319 # ./configure is mislead by our tools override wrapper for bash
320 # so just tell it where the real bash is _on_the_target_!
322 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
323 # - ${BASH_SHELL} is only used to set BASH
324 # - ${BASH} is only used to set the shebang
325 # in two scripts to run on the target
326 # So we can safely bypass bash detection at compile time.
327 # Should this change in a future eglibc release, we'd better
328 # directly mangle the generated scripts _after_ they get built,
329 # or even after they get installed... eglibc is such a sucker...
330 echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
332 # Configure with --prefix the way we want it on the target...
333 # There are a whole lot of settings here. You'll probably want
334 # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG_ARRAY
335 # Compare these options with the ones used when installing the glibc headers above - they're different.
336 # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
337 # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
338 # Set BUILD_CC, or we won't be able to build datafiles
339 # Run explicitly through CONFIG_SHELL, or the build breaks badly (loop-of-death)
340 # when the shell is not bash... Sigh... :-(
342 CT_DoLog DEBUG "Using gcc for target : '${cross_cc}'"
343 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
344 CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
345 CT_DoLog DEBUG "Extra CC args passed : '${glibc_cflags}'"
346 CT_DoLog DEBUG "Extra flags (multilib) : '${extra_flags}'"
349 BUILD_CC="${CT_BUILD}-gcc" \
350 CFLAGS="${glibc_cflags}" \
351 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
353 RANLIB=${CT_TARGET}-ranlib \
355 "${src_dir}/configure" \
357 --build=${CT_BUILD} \
358 --host=${CT_TARGET} \
359 --cache-file="$(pwd)/config.cache" \
363 --with-headers="${CT_HEADERS_DIR}" \
364 "${extra_config[@]}" \
365 "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[@]}"
368 case "${CT_ARCH},${CT_ARCH_CPU}" in
370 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
371 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
372 extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
376 if [ "${libc_headers}" = "y" ]; then
377 CT_DoLog EXTRA "Installing C library headers"
379 # use the 'install-headers' makefile target to install the
381 CT_DoExecLog ALL make ${JOBSFLAGS} \
382 install_root=${CT_SYSROOT_DIR}${extra_dir} \
383 install-bootstrap-headers=yes \
384 "${extra_make_args[@]}" \
387 # For glibc, a few headers need to be manually installed
388 if [ "${CT_LIBC}" = "glibc" ]; then
389 # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
390 # so do them by hand. We can tolerate an empty stubs.h for the moment.
391 # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
392 mkdir -p "${CT_HEADERS_DIR}/gnu"
393 CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
394 CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h" \
395 "${CT_HEADERS_DIR}/features.h"
397 # Building the bootstrap gcc requires either setting inhibit_libc, or
398 # having a copy of stdio_lim.h... see
399 # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
400 CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
402 # Following error building gcc-4.0.0's gcj:
403 # error: bits/syscall.h: No such file or directory
404 # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
405 # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
408 *) CT_DoExecLog ALL cp -v "misc/syscall-list.h" \
409 "${CT_HEADERS_DIR}/bits/syscall.h"
413 fi # libc_headers == y
415 if [ "${libc_startfiles}" = "y" ]; then
416 if [ "${CT_THREADS}" = "nptl" ]; then
417 CT_DoLog EXTRA "Installing C library start files"
419 # there are a few object files needed to link shared libraries,
420 # which we build and install by hand
421 CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}${extra_dir}/usr/lib"
422 CT_DoExecLog ALL make ${JOBSFLAGS} \
423 "${extra_make_args[@]}" \
425 CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
426 "${CT_SYSROOT_DIR}${extra_dir}/usr/lib"
428 # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.
429 # However, since we will never actually execute its code,
430 # it doesn't matter what it contains. So, treating '/dev/null'
431 # as a C source file, we produce a dummy 'libc.so' in one step
432 CT_DoExecLog ALL "${cross_cc}" -nostdlib \
436 -o "${CT_SYSROOT_DIR}${extra_dir}/usr/lib/libc.so"
438 fi # libc_headers == y
440 if [ "${libc_full}" = "y" ]; then
441 CT_DoLog EXTRA "Building C library"
442 CT_DoExecLog ALL make ${JOBSFLAGS} \
443 "${extra_make_args[@]}" \
446 CT_DoLog EXTRA "Installing C library"
447 CT_DoExecLog ALL make ${JOBSFLAGS} \
448 "${extra_make_args[@]}" \
449 install_root="${CT_SYSROOT_DIR}${extra_dir}" \
452 if [ "${CT_BUILD_MANUALS}" = "y" ]; then
453 CT_DoLog EXTRA "Building and installing the C library manual"
454 # Omit JOBSFLAGS as GLIBC has problems building the
455 # manuals in parallel
456 CT_DoExecLog ALL make pdf html
457 # EGLIBC doesn't have a install-{pdf.html} and leaves the manuals
458 # in the source directory
459 CT_DoExecLog ALL mkdir -p ${CT_PREFIX_DIR}/share/doc
460 CT_DoExecLog ALL cp -av ${src_dir}/manual/*.pdf ${src_dir}/manual/libc \
461 ${CT_PREFIX_DIR}/share/doc
464 if [ "${CT_LIBC_LOCALES}" = "y" ]; then
470 # This function finishes the C library install
476 # Build up the addons list, separated with $1
477 do_libc_add_ons_list() {
479 local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}" \
480 |sed -r -e "s/[[:space:],]/${sep}/g;" \
482 case "${CT_THREADS}" in
484 *) addons_list="${addons_list}${sep}${CT_THREADS}";;
486 [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
487 # Remove duplicate, leading and trailing separators
488 echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
491 # Compute up the minimum supported Linux kernel version
492 do_libc_min_kernel_config() {
493 local min_kernel_config
495 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
496 *--enable-kernel*) ;;
497 *) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
498 # We can't rely on the kernel version from the configuration,
499 # because it might not be available if the user uses pre-installed
500 # headers. On the other hand, both method will have the kernel
501 # version installed in "usr/include/linux/version.h" in the sysroot.
502 # Parse that instead of having two code-paths.
503 version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
504 if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
505 CT_Abort "Linux version is unavailable in installed headers files"
507 version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
510 version=$(((version_code>>16)&0xFF))
511 patchlevel=$(((version_code>>8)&0xFF))
512 sublevel=$((version_code&0xFF))
513 min_kernel_config="${version}.${patchlevel}.${sublevel}"
514 elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
515 # Trim the fourth part of the linux version, keeping only the first three numbers
516 min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
517 |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
520 echo "--enable-kernel=${min_kernel_config}"