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="${hdr}"
141 CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}${extra_dir//\//_}"
143 do_libc_backend_once extra_dir="${extra_dir}" \
144 extra_flags="${extra_flags}" \
145 libc_headers="${libc_headers}" \
146 libc_startfiles="${libc_startfiles}" \
147 libc_full="${libc_full}"
151 if [ "${multi_dir}" != "." ]; then
152 if [ "${libc_mode}" = "final" ]; then
153 CT_DoLog EXTRA "Fixing up multilib location"
155 # rewrite the library multiplexers
156 for d in "lib/${multi_dir}" "usr/lib/${multi_dir}"; do
157 for l in libc libpthread libgcc_s; do
158 if [ -f "${CT_SYSROOT_DIR}/${d}/${l}.so" \
159 -a ! -L ${CT_SYSROOT_DIR}/${d}/${l}.so ]
161 CT_DoExecLog DEBUG ${sed} -r -i \
162 -e "s:/lib/:/lib/${multi_dir}/:g;" \
163 "${CT_SYSROOT_DIR}/${d}/${l}.so"
167 # Remove the multi_dir now it is no longer useful
168 CT_DoExecLog DEBUG rm -rf "${CT_SYSROOT_DIR}/${multi_dir}"
169 fi # libc_mode == final
178 # This backend builds the C library once
179 # Usage: do_libc_backend_once param=value [...]
180 # Parameter : Definition : Type : Default
181 # libc_headers : Build libc headers : bool : n
182 # libc_startfiles : Build libc start-files : bool : n
183 # libc_full : Build full libc : bool : n
184 # extra_flags : Extra CFLAGS to use (for multilib) : string : (empty)
185 # extra_dir : Extra subdir for multilib : string : (empty)
186 do_libc_backend_once() {
188 local libc_startfiles
192 local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
194 local -a extra_config
195 local -a extra_make_args
205 CT_DoLog EXTRA "Configuring C library"
209 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
210 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
212 if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
217 if [ "${CT_LIBC_EGLIBC_2_16_or_later}" = "y" ]; then
218 # always include rpc, the user can still override it with TI-RPC
219 extra_config+=( --enable-obsolete-rpc )
223 # glibc can't be built without -O2 (reference needed!)
225 # Also, if those two are missing, iconv build breaks
226 extra_config+=( --disable-debug --disable-sanity-checks )
230 # Add some default glibc config options if not given by user.
231 # We don't need to be conditional on wether the user did set different
232 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY is passed after
235 extra_config+=("$(do_libc_min_kernel_config)")
237 case "${CT_THREADS}" in
238 nptl) extra_config+=("--with-__thread" "--with-tls");;
239 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
240 none) extra_config+=("--without-__thread" "--without-nptl")
241 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
243 *) extra_config+=("--without-tls");;
248 case "${CT_SHARED_LIBS}" in
249 y) extra_config+=("--enable-shared");;
250 *) extra_config+=("--disable-shared");;
253 float_extra="$( echo "${extra_flags}" \
254 |${sed} -r -e '/^(.*[[:space:]])?-m(hard|soft)-float([[:space:]].*)?$/!d;' \
257 case "${float_extra}" in
258 hard) extra_config+=("--with-fp");;
259 soft) extra_config+=("--without-fp");;
261 case "${CT_ARCH_FLOAT}" in
262 hard|softfp) extra_config+=("--with-fp");;
263 soft) extra_config+=("--without-fp");;
268 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
269 extra_config+=("--disable-versioning")
272 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
273 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
276 case "$(do_libc_add_ons_list ,)" in
277 "") extra_config+=("--enable-add-ons=no");;
278 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
281 if [ "${CT_LIBC_EGLIBC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
282 extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
283 [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
286 # Extract the endianness options if any
287 # This should cover all possible endianness options
288 # in gcc, but it is prone to bit-rot... :-(
289 endian_extra="$( echo "${extra_flags}" \
290 |${sed} -r -e '/^(.*[[:space:]])?-(E[BL]|m((big|little)(-endian)?|e?[bl]))([[:space:]].*)?$/!d;' \
293 case "${endian_extra}" in
294 EB|mbig-endian|mbig|meb|mb)
295 extra_cc_args="${extra_cc_args} ${endian_extra}"
297 EL|mlittle-endian|mlittle|mel|ml)
298 extra_cc_args="${extra_cc_args} ${endian_extra}"
300 "") extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
305 if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
306 echo "libc_cv_forced_unwind=yes" >>config.cache
307 echo "libc_cv_c_cleanup=yes" >>config.cache
310 # Pre-seed the configparms file with values from the config option
311 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
313 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
314 extra_cc_args+=" ${extra_flags}"
316 case "${CT_LIBC_ENABLE_FORTIFIED_BUILD}" in
318 *) glibc_cflags+=" -U_FORTIFY_SOURCE";;
320 glibc_cflags+=" ${CT_TARGET_CFLAGS} ${OPTIMIZE} ${CT_LIBC_GLIBC_EXTRA_CFLAGS}"
322 # ./configure is mislead by our tools override wrapper for bash
323 # so just tell it where the real bash is _on_the_target_!
325 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
326 # - ${BASH_SHELL} is only used to set BASH
327 # - ${BASH} is only used to set the shebang
328 # in two scripts to run on the target
329 # So we can safely bypass bash detection at compile time.
330 # Should this change in a future eglibc release, we'd better
331 # directly mangle the generated scripts _after_ they get built,
332 # or even after they get installed...
333 echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
335 # Configure with --prefix the way we want it on the target...
336 # There are a whole lot of settings here. You'll probably want
337 # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG_ARRAY
338 # Compare these options with the ones used when installing the glibc headers above - they're different.
339 # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
340 # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
341 # Set BUILD_CC, or we won't be able to build datafiles
342 # Run explicitly through CONFIG_SHELL, or the build breaks badly (loop-of-death)
343 # when the shell is not bash... Sigh... :-(
345 CT_DoLog DEBUG "Using gcc for target : '${cross_cc}'"
346 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
347 CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
348 CT_DoLog DEBUG "Extra CC args passed : '${glibc_cflags}'"
349 CT_DoLog DEBUG "Extra flags (multilib) : '${extra_flags}'"
352 BUILD_CC="${CT_BUILD}-gcc" \
353 CFLAGS="${glibc_cflags}" \
354 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
356 RANLIB=${CT_TARGET}-ranlib \
358 "${src_dir}/configure" \
360 --build=${CT_BUILD} \
361 --host=${CT_TARGET} \
362 --cache-file="$(pwd)/config.cache" \
366 --with-headers="${CT_HEADERS_DIR}" \
367 "${extra_config[@]}" \
368 "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[@]}"
371 case "${CT_ARCH},${CT_ARCH_CPU}" in
373 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
374 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
375 extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
379 if [ "${libc_headers}" = "y" ]; then
380 CT_DoLog EXTRA "Installing C library headers"
382 # use the 'install-headers' makefile target to install the
384 CT_DoExecLog ALL make ${JOBSFLAGS} \
385 install_root=${CT_SYSROOT_DIR}${extra_dir} \
386 install-bootstrap-headers=yes \
387 "${extra_make_args[@]}" \
390 # For glibc, a few headers need to be manually installed
391 if [ "${CT_LIBC}" = "glibc" ]; then
392 # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
393 # so do them by hand. We can tolerate an empty stubs.h for the moment.
394 # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
395 mkdir -p "${CT_HEADERS_DIR}/gnu"
396 CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
397 CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h" \
398 "${CT_HEADERS_DIR}/features.h"
400 # Building the bootstrap gcc requires either setting inhibit_libc, or
401 # having a copy of stdio_lim.h... see
402 # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
403 CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
405 # Following error building gcc-4.0.0's gcj:
406 # error: bits/syscall.h: No such file or directory
407 # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
408 # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
411 *) CT_DoExecLog ALL cp -v "misc/syscall-list.h" \
412 "${CT_HEADERS_DIR}/bits/syscall.h"
416 fi # libc_headers == y
418 if [ "${libc_startfiles}" = "y" ]; then
419 if [ "${CT_THREADS}" = "nptl" ]; then
420 CT_DoLog EXTRA "Installing C library start files"
422 # there are a few object files needed to link shared libraries,
423 # which we build and install by hand
424 CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}${extra_dir}/usr/lib"
425 CT_DoExecLog ALL make ${JOBSFLAGS} \
426 "${extra_make_args[@]}" \
428 CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
429 "${CT_SYSROOT_DIR}${extra_dir}/usr/lib"
431 # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.
432 # However, since we will never actually execute its code,
433 # it doesn't matter what it contains. So, treating '/dev/null'
434 # as a C source file, we produce a dummy 'libc.so' in one step
435 CT_DoExecLog ALL "${cross_cc}" -nostdlib \
439 -o "${CT_SYSROOT_DIR}${extra_dir}/usr/lib/libc.so"
441 fi # libc_headers == y
443 if [ "${libc_full}" = "y" ]; then
444 CT_DoLog EXTRA "Building C library"
445 CT_DoExecLog ALL make ${JOBSFLAGS} \
446 "${extra_make_args[@]}" \
449 CT_DoLog EXTRA "Installing C library"
450 CT_DoExecLog ALL make ${JOBSFLAGS} \
451 "${extra_make_args[@]}" \
452 install_root="${CT_SYSROOT_DIR}${extra_dir}" \
455 if [ "${CT_BUILD_MANUALS}" = "y" ]; then
456 CT_DoLog EXTRA "Building and installing the C library manual"
457 # Omit JOBSFLAGS as GLIBC has problems building the
458 # manuals in parallel
459 CT_DoExecLog ALL make pdf html
460 # EGLIBC doesn't have a install-{pdf.html}, and older
461 # versions leave the manuals in the source directory
462 CT_DoExecLog ALL mkdir -p ${CT_PREFIX_DIR}/share/doc
463 if [ "${CT_LIBC_EGLIBC_2_16_or_later}" = "y" ]; then
464 CT_DoExecLog ALL cp -av manual/*.pdf manual/libc \
465 ${CT_PREFIX_DIR}/share/doc
467 CT_DoExecLog ALL cp -av ${src_dir}/manual/*.pdf ${src_dir}/manual/libc \
468 ${CT_PREFIX_DIR}/share/doc
472 if [ "${CT_LIBC_LOCALES}" = "y" ]; then
478 # This function finishes the C library install
484 # Build up the addons list, separated with $1
485 do_libc_add_ons_list() {
487 local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}" \
488 |sed -r -e "s/[[:space:],]/${sep}/g;" \
490 case "${CT_THREADS}" in
492 *) addons_list="${addons_list}${sep}${CT_THREADS}";;
494 [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
495 # Remove duplicate, leading and trailing separators
496 echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
499 # Compute up the minimum supported Linux kernel version
500 do_libc_min_kernel_config() {
501 local min_kernel_config
503 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
504 *--enable-kernel*) ;;
505 *) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
506 # We can't rely on the kernel version from the configuration,
507 # because it might not be available if the user uses pre-installed
508 # headers. On the other hand, both method will have the kernel
509 # version installed in "usr/include/linux/version.h" in the sysroot.
510 # Parse that instead of having two code-paths.
511 version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
512 if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
513 CT_Abort "Linux version is unavailable in installed headers files"
515 version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
518 version=$(((version_code>>16)&0xFF))
519 patchlevel=$(((version_code>>8)&0xFF))
520 sublevel=$((version_code&0xFF))
521 min_kernel_config="${version}.${patchlevel}.${sublevel}"
522 elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
523 # Trim the fourth part of the linux version, keeping only the first three numbers
524 min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
525 |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
528 echo "--enable-kernel=${min_kernel_config}"