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 [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
217 # always include rpc, the user can still override it with TI-RPC
218 extra_config+=( --enable-obsolete-rpc )
221 # glibc can't be built without -O2 (reference needed!)
223 # Also, if those two are missing, iconv build breaks
224 extra_config+=( --disable-debug --disable-sanity-checks )
228 # Add some default glibc config options if not given by user.
229 # We don't need to be conditional on wether the user did set different
230 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY is passed after
233 extra_config+=("$(do_libc_min_kernel_config)")
235 case "${CT_THREADS}" in
236 nptl) extra_config+=("--with-__thread" "--with-tls");;
237 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
238 none) extra_config+=("--without-__thread" "--without-nptl")
239 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
241 *) extra_config+=("--without-tls");;
246 case "${CT_SHARED_LIBS}" in
247 y) extra_config+=("--enable-shared");;
248 *) extra_config+=("--disable-shared");;
251 float_extra="$( echo "${extra_flags}" \
252 |${sed} -r -e '/^(.*[[:space:]])?-m(hard|soft)-float([[:space:]].*)?$/!d;' \
255 case "${float_extra}" in
256 hard) extra_config+=("--with-fp");;
257 soft) extra_config+=("--without-fp");;
259 case "${CT_ARCH_FLOAT}" in
260 hard|softfp) extra_config+=("--with-fp");;
261 soft) extra_config+=("--without-fp");;
266 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
267 extra_config+=("--disable-versioning")
270 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
271 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
274 case "$(do_libc_add_ons_list ,)" in
275 "") extra_config+=("--enable-add-ons=no");;
276 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
279 extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
280 [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
282 # Extract the endianness options if any
283 # This should cover all possible endianness options
284 # in gcc, but it is prone to bit-rot... :-(
285 endian_extra="$( echo "${extra_flags}" \
286 |${sed} -r -e '/^(.*[[:space:]])?-(E[BL]|m((big|little)(-endian)?|e?[bl]))([[:space:]].*)?$/!d;' \
289 case "${endian_extra}" in
290 EB|mbig-endian|mbig|meb|mb)
291 extra_cc_args="${extra_cc_args} ${endian_extra}"
293 EL|mlittle-endian|mlittle|mel|ml)
294 extra_cc_args="${extra_cc_args} ${endian_extra}"
296 "") extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
301 if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
302 echo "libc_cv_forced_unwind=yes" >>config.cache
303 echo "libc_cv_c_cleanup=yes" >>config.cache
306 # Pre-seed the configparms file with values from the config option
307 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
309 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
310 extra_cc_args+=" ${extra_flags}"
312 case "${CT_LIBC_ENABLE_FORTIFIED_BUILD}" in
314 *) glibc_cflags+=" -U_FORTIFY_SOURCE";;
316 glibc_cflags+=" ${CT_TARGET_CFLAGS} ${OPTIMIZE} ${CT_LIBC_GLIBC_EXTRA_CFLAGS}"
318 # ./configure is mislead by our tools override wrapper for bash
319 # so just tell it where the real bash is _on_the_target_!
321 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
322 # - ${BASH_SHELL} is only used to set BASH
323 # - ${BASH} is only used to set the shebang
324 # in two scripts to run on the target
325 # So we can safely bypass bash detection at compile time.
326 # Should this change in a future eglibc release, we'd better
327 # directly mangle the generated scripts _after_ they get built,
328 # or even after they get installed...
329 echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
331 # Configure with --prefix the way we want it on the target...
332 # There are a whole lot of settings here. You'll probably want
333 # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG_ARRAY
334 # Compare these options with the ones used when installing the glibc headers above - they're different.
335 # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
336 # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
337 # Set BUILD_CC, or we won't be able to build datafiles
338 # Run explicitly through CONFIG_SHELL, or the build breaks badly (loop-of-death)
339 # when the shell is not bash... Sigh... :-(
341 CT_DoLog DEBUG "Using gcc for target : '${cross_cc}'"
342 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
343 CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
344 CT_DoLog DEBUG "Extra CC args passed : '${glibc_cflags}'"
345 CT_DoLog DEBUG "Extra flags (multilib) : '${extra_flags}'"
348 BUILD_CC="${CT_BUILD}-gcc" \
349 CFLAGS="${glibc_cflags}" \
350 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
352 RANLIB=${CT_TARGET}-ranlib \
354 "${src_dir}/configure" \
356 --build=${CT_BUILD} \
357 --host=${CT_TARGET} \
358 --cache-file="$(pwd)/config.cache" \
362 --with-headers="${CT_HEADERS_DIR}" \
363 "${extra_config[@]}" \
364 "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[@]}"
367 case "${CT_ARCH},${CT_ARCH_CPU}" in
369 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
370 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
371 extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
375 if [ "${libc_headers}" = "y" ]; then
376 CT_DoLog EXTRA "Installing C library headers"
378 # use the 'install-headers' makefile target to install the
380 CT_DoExecLog ALL make ${JOBSFLAGS} \
381 install_root=${CT_SYSROOT_DIR}${extra_dir} \
382 install-bootstrap-headers=yes \
383 "${extra_make_args[@]}" \
386 # For glibc, a few headers need to be manually installed
387 if [ "${CT_LIBC}" = "glibc" ]; then
388 # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
389 # so do them by hand. We can tolerate an empty stubs.h for the moment.
390 # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
391 mkdir -p "${CT_HEADERS_DIR}/gnu"
392 CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
393 CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h" \
394 "${CT_HEADERS_DIR}/features.h"
396 # Building the bootstrap gcc requires either setting inhibit_libc, or
397 # having a copy of stdio_lim.h... see
398 # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
399 CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
401 # Following error building gcc-4.0.0's gcj:
402 # error: bits/syscall.h: No such file or directory
403 # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
404 # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
405 # Of course, only copy it if it does not already exist
408 *) if [ -f "${CT_HEADERS_DIR}/bits/syscall.h" ]; then
409 CT_DoLog ALL "Not over-writing existing bits/syscall.h"
410 elif [ -f "misc/bits/syscall.h" ]; then
411 CT_DoExecLog ALL cp -v "misc/bits/syscall.h" \
412 "${CT_HEADERS_DIR}/bits/syscall.h"
414 # "Old" glibces do not have the above file,
415 # but provide this one:
416 CT_DoExecLog ALL cp -v "misc/syscall-list.h" \
417 "${CT_HEADERS_DIR}/bits/syscall.h"
422 fi # libc_headers == y
424 if [ "${libc_startfiles}" = "y" ]; then
425 if [ "${CT_THREADS}" = "nptl" ]; then
426 CT_DoLog EXTRA "Installing C library start files"
428 # there are a few object files needed to link shared libraries,
429 # which we build and install by hand
430 CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}${extra_dir}/usr/lib"
431 CT_DoExecLog ALL make ${JOBSFLAGS} \
432 "${extra_make_args[@]}" \
434 CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
435 "${CT_SYSROOT_DIR}${extra_dir}/usr/lib"
437 # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.
438 # However, since we will never actually execute its code,
439 # it doesn't matter what it contains. So, treating '/dev/null'
440 # as a C source file, we produce a dummy 'libc.so' in one step
441 CT_DoExecLog ALL "${cross_cc}" -nostdlib \
445 -o "${CT_SYSROOT_DIR}${extra_dir}/usr/lib/libc.so"
447 fi # libc_headers == y
449 if [ "${libc_full}" = "y" ]; then
450 CT_DoLog EXTRA "Building C library"
451 CT_DoExecLog ALL make ${JOBSFLAGS} \
452 "${extra_make_args[@]}" \
455 CT_DoLog EXTRA "Installing C library"
456 CT_DoExecLog ALL make ${JOBSFLAGS} \
457 "${extra_make_args[@]}" \
458 install_root="${CT_SYSROOT_DIR}${extra_dir}" \
461 if [ "${CT_BUILD_MANUALS}" = "y" ]; then
462 CT_DoLog EXTRA "Building and installing the C library manual"
463 # Omit JOBSFLAGS as GLIBC has problems building the
464 # manuals in parallel
465 CT_DoExecLog ALL make pdf html
466 # EGLIBC doesn't have a install-{pdf.html}, and older
467 # versions leave the manuals in the source directory
468 CT_DoExecLog ALL mkdir -p ${CT_PREFIX_DIR}/share/doc
469 if [ "${CT_LIBC_EGLIBC_2_16_or_later}" = "y" ]; then
470 CT_DoExecLog ALL cp -av manual/*.pdf manual/libc \
471 ${CT_PREFIX_DIR}/share/doc
473 CT_DoExecLog ALL cp -av ${src_dir}/manual/*.pdf ${src_dir}/manual/libc \
474 ${CT_PREFIX_DIR}/share/doc
478 if [ "${CT_LIBC_LOCALES}" = "y" ]; then
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}"