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 $(do_libc_add_ons_list " "); do
14 # NPTL addon is not to be extracted, in any case
15 [ "${addon}" = "nptl" ] && continue || true
17 CT_Extract nochdir "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
19 CT_TestAndAbort "Error in add-on '${addon}': both short and long names in tarball" \
20 -d "${addon}" -a -d "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
22 # Some addons have the 'long' name, while others have the
23 # 'short' name, but patches are non-uniformly built with
24 # either the 'long' or 'short' name, whatever the addons name
25 # but we prefer the 'short' name and avoid duplicates.
26 if [ -d "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" ]; then
27 mv "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" "${addon}"
30 ln -s "${addon}" "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
32 CT_Patch nochdir "${CT_LIBC}" "${addon}-${CT_LIBC_VERSION}"
34 # Remove the long name since it can confuse configure scripts to run
35 # the same source twice.
36 rm "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
39 # The configure files may be older than the configure.in files
40 # if using a snapshot (or even some tarballs). Fake them being
42 find . -type f -name configure -exec touch {} \; 2>&1 |CT_DoLog ALL
47 # Build and install headers and start files
48 do_libc_start_files() {
49 local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
51 CT_DoStep INFO "Installing C library headers & start files"
53 mkdir -p "${CT_BUILD_DIR}/build-libc-startfiles"
54 cd "${CT_BUILD_DIR}/build-libc-startfiles"
56 CT_DoLog EXTRA "Configuring C library"
60 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
61 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
66 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
67 cross_cxx=$(CT_Which "${CT_TARGET}-g++")
68 cross_ar=$(CT_Which "${CT_TARGET}-ar")
69 cross_ranlib=$(CT_Which "${CT_TARGET}-ranlib")
71 CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
72 CT_DoLog DEBUG "Using g++ for target: '${cross_cxx}'"
73 CT_DoLog DEBUG "Using ar for target: '${cross_ar}'"
74 CT_DoLog DEBUG "Using ranlib for target: '${cross_ranlib}'"
77 if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
78 echo "libc_cv_forced_unwind=yes" >>config.cache
79 echo "libc_cv_c_cleanup=yes" >>config.cache
82 # Pre-seed the configparms file with values from the config option
83 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
86 BUILD_CC="${CT_BUILD}-gcc" \
90 RANLIB=${cross_ranlib} \
91 "${src_dir}/configure" \
93 --with-headers="${CT_HEADERS_DIR}" \
94 --build="${CT_BUILD}" \
95 --host="${CT_TARGET}" \
96 --cache-file="$(pwd)/config.cache" \
102 CT_DoLog EXTRA "Installing C library headers"
104 # use the 'install-headers' makefile target to install the
106 CT_DoExecLog ALL make ${JOBSFLAGS} \
107 install_root=${CT_SYSROOT_DIR} \
108 install-bootstrap-headers=yes \
111 # For glibc, a few headers need to be manually installed
112 if [ "${CT_LIBC}" = "glibc" ]; then
113 # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
114 # so do them by hand. We can tolerate an empty stubs.h for the moment.
115 # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
116 mkdir -p "${CT_HEADERS_DIR}/gnu"
117 CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
118 CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h" \
119 "${CT_HEADERS_DIR}/features.h"
121 # Building the bootstrap gcc requires either setting inhibit_libc, or
122 # having a copy of stdio_lim.h... see
123 # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
124 CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
126 # Following error building gcc-4.0.0's gcj:
127 # error: bits/syscall.h: No such file or directory
128 # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
129 # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
132 *) CT_DoExecLog ALL cp -v "misc/syscall-list.h" \
133 "${CT_HEADERS_DIR}/bits/syscall.h"
138 if [ "${CT_THREADS}" = "nptl" ]; then
139 CT_DoLog EXTRA "Installing C library start files"
141 # there are a few object files needed to link shared libraries,
142 # which we build and install by hand
143 CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
144 CT_DoExecLog ALL make ${JOBSFLAGS} csu/subdir_lib
145 CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
146 "${CT_SYSROOT_DIR}/usr/lib"
148 # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.
149 # However, since we will never actually execute its code,
150 # it doesn't matter what it contains. So, treating '/dev/null'
151 # as a C source file, we produce a dummy 'libc.so' in one step
152 CT_DoExecLog ALL "${cross_cc}" -nostdlib \
156 -o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
162 # This function builds and install the full C library
164 local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
166 local -a extra_config
167 local -a extra_make_args
170 CT_DoStep INFO "Installing C library"
172 mkdir -p "${CT_BUILD_DIR}/build-libc"
173 cd "${CT_BUILD_DIR}/build-libc"
175 CT_DoLog EXTRA "Configuring C library"
179 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
180 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
182 if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
189 # glibc can't be built without -O2 (reference needed!)
191 # Also, if those two are missing, iconv build breaks
192 extra_config+=( --disable-debug --disable-sanity-checks )
196 # Add some default glibc config options if not given by user.
197 # We don't need to be conditional on wether the user did set different
198 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY is passed after
201 extra_config+=("$(do_libc_min_kernel_config)")
203 case "${CT_THREADS}" in
204 nptl) extra_config+=("--with-__thread" "--with-tls");;
205 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
206 none) extra_config+=("--without-__thread" "--without-nptl")
207 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
209 *) extra_config+=("--without-tls");;
214 case "${CT_SHARED_LIBS}" in
215 y) extra_config+=("--enable-shared");;
216 *) extra_config+=("--disable-shared");;
219 case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
220 y,) extra_config+=("--with-fp");;
221 ,y) extra_config+=("--without-fp");;
224 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
225 extra_config+=("--disable-versioning")
228 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
229 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
232 case "$(do_libc_add_ons_list ,)" in
234 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
237 extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
240 if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
241 echo "libc_cv_forced_unwind=yes" >>config.cache
242 echo "libc_cv_c_cleanup=yes" >>config.cache
245 # Pre-seed the configparms file with values from the config option
246 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
248 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
250 CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
251 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
252 CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
253 CT_DoLog DEBUG "Extra CC args passed : '${extra_cc_args}'"
255 glibc_cflags="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}"
256 case "${CT_LIBC_ENABLE_FORTIFIED_BUILD}" in
258 *) glibc_cflags+=" -U_FORTIFY_SOURCE";;
261 # ./configure is mislead by our tools override wrapper for bash
262 # so just tell it where the real bash is _on_the_target_!
264 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
265 # - ${BASH_SHELL} is only used to set BASH
266 # - ${BASH} is only used to set the shebang
267 # in two scripts to run on the target
268 # So we can safely bypass bash detection at compile time.
269 # Should this change in a future eglibc release, we'd better
270 # directly mangle the generated scripts _after_ they get built,
271 # or even after they get installed... eglibc is such a sucker...
272 echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
274 # Configure with --prefix the way we want it on the target...
275 # There are a whole lot of settings here. You'll probably want
276 # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG_ARRAY
277 # Compare these options with the ones used when installing the glibc headers above - they're different.
278 # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
279 # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
280 # Set BUILD_CC, or we won't be able to build datafiles
283 BUILD_CC="${CT_BUILD}-gcc" \
284 CFLAGS="${glibc_cflags}" \
285 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
287 RANLIB=${CT_TARGET}-ranlib \
288 "${src_dir}/configure" \
290 --build=${CT_BUILD} \
291 --host=${CT_TARGET} \
292 --cache-file="$(pwd)/config.cache" \
296 --with-headers="${CT_HEADERS_DIR}" \
297 "${extra_config[@]}" \
298 "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[@]}"
301 case "${CT_ARCH},${CT_ARCH_CPU}" in
303 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
304 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
305 extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
309 CT_DoLog EXTRA "Building C library"
310 CT_DoExecLog ALL make ${JOBSFLAGS} \
311 "${extra_make_args[@]}" \
314 CT_DoLog EXTRA "Installing C library"
315 CT_DoExecLog ALL make ${JOBSFLAGS} \
316 "${extra_make_args[@]}" \
317 install_root="${CT_SYSROOT_DIR}" \
323 # This function finishes the C library install
329 # Build up the addons list, separated with $1
330 do_libc_add_ons_list() {
332 local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}" \
333 |sed -r -e "s/[[:space:],]/${sep}/g;" \
335 case "${CT_THREADS}" in
337 *) addons_list="${addons_list}${sep}${CT_THREADS}";;
339 [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
340 # Remove duplicate, leading and trailing separators
341 echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
344 # Compute up the minimum supported Linux kernel version
345 do_libc_min_kernel_config() {
346 local min_kernel_config
348 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
349 *--enable-kernel*) ;;
350 *) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
351 # We can't rely on the kernel version from the configuration,
352 # because it might not be available if the user uses pre-installed
353 # headers. On the other hand, both method will have the kernel
354 # version installed in "usr/include/linux/version.h" in the sysroot.
355 # Parse that instead of having two code-paths.
356 version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
357 if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
358 CT_Abort "Linux version is unavailable in installed headers files"
360 version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
363 version=$(((version_code>>16)&0xFF))
364 patchlevel=$(((version_code>>8)&0xFF))
365 sublevel=$((version_code&0xFF))
366 min_kernel_config="${version}.${patchlevel}.${sublevel}"
367 elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
368 # Trim the fourth part of the linux version, keeping only the first three numbers
369 min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
370 |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
373 echo "--enable-kernel=${min_kernel_config}"