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}-${CT_LIBC_VERSION}" ]; then
32 mv "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" "${addon}"
35 ln -s "${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}-${CT_LIBC_VERSION}"
44 # The configure files may be older than the configure.in files
45 # if using a snapshot (or even some tarballs). Fake them being
47 find . -type f -name configure -exec touch {} \; 2>&1 |CT_DoLog ALL
52 # Build and install headers and start files
53 do_libc_start_files() {
54 # Start files and Headers should be configured the same way as the
55 # final libc, but built and installed differently.
56 do_libc_backend libc_mode=startfiles
59 # This function builds and install the full C library
61 do_libc_backend libc_mode=final
65 local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
69 local -a extra_make_args
72 while [ $# -ne 0 ]; do
77 if [ "${libc_mode}" = "startfiles" ]; then
78 CT_DoStep INFO "Installing C library headers & start files"
79 mkdir -p "${CT_BUILD_DIR}/build-libc-start-files"
80 cd "${CT_BUILD_DIR}/build-libc-start-files"
81 else # libc_mode = final
82 CT_DoStep INFO "Installing C library"
83 mkdir -p "${CT_BUILD_DIR}/build-libc"
84 cd "${CT_BUILD_DIR}/build-libc"
87 CT_DoLog EXTRA "Configuring C library"
91 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
92 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
94 if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
101 # glibc can't be built without -O2 (reference needed!)
103 # Also, if those two are missing, iconv build breaks
104 extra_config+=( --disable-debug --disable-sanity-checks )
108 # Add some default glibc config options if not given by user.
109 # We don't need to be conditional on wether the user did set different
110 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY is passed after
113 extra_config+=("$(do_libc_min_kernel_config)")
115 case "${CT_THREADS}" in
116 nptl) extra_config+=("--with-__thread" "--with-tls");;
117 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
118 none) extra_config+=("--without-__thread" "--without-nptl")
119 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
121 *) extra_config+=("--without-tls");;
126 case "${CT_SHARED_LIBS}" in
127 y) extra_config+=("--enable-shared");;
128 *) extra_config+=("--disable-shared");;
131 case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
132 y,) extra_config+=("--with-fp");;
133 ,y) extra_config+=("--without-fp");;
136 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
137 extra_config+=("--disable-versioning")
140 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
141 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
144 case "$(do_libc_add_ons_list ,)" in
145 "") extra_config+=("--enable-add-ons=no");;
146 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
149 if [ "${CT_LIBC_EGLIBC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
150 extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
151 [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
154 extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
157 if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
158 echo "libc_cv_forced_unwind=yes" >>config.cache
159 echo "libc_cv_c_cleanup=yes" >>config.cache
162 # Pre-seed the configparms file with values from the config option
163 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
165 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
167 CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
168 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
169 CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
170 CT_DoLog DEBUG "Extra CC args passed : '${extra_cc_args}'"
172 glibc_cflags="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}"
173 case "${CT_LIBC_ENABLE_FORTIFIED_BUILD}" in
175 *) glibc_cflags+=" -U_FORTIFY_SOURCE";;
178 # ./configure is mislead by our tools override wrapper for bash
179 # so just tell it where the real bash is _on_the_target_!
181 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
182 # - ${BASH_SHELL} is only used to set BASH
183 # - ${BASH} is only used to set the shebang
184 # in two scripts to run on the target
185 # So we can safely bypass bash detection at compile time.
186 # Should this change in a future eglibc release, we'd better
187 # directly mangle the generated scripts _after_ they get built,
188 # or even after they get installed... eglibc is such a sucker...
189 echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
191 # Configure with --prefix the way we want it on the target...
192 # There are a whole lot of settings here. You'll probably want
193 # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG_ARRAY
194 # Compare these options with the ones used when installing the glibc headers above - they're different.
195 # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
196 # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
197 # Set BUILD_CC, or we won't be able to build datafiles
200 BUILD_CC="${CT_BUILD}-gcc" \
201 CFLAGS="${glibc_cflags}" \
202 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
204 RANLIB=${CT_TARGET}-ranlib \
205 "${src_dir}/configure" \
207 --build=${CT_BUILD} \
208 --host=${CT_TARGET} \
209 --cache-file="$(pwd)/config.cache" \
213 --with-headers="${CT_HEADERS_DIR}" \
214 "${extra_config[@]}" \
215 "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[@]}"
218 case "${CT_ARCH},${CT_ARCH_CPU}" in
220 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
221 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
222 extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
226 if [ "${libc_mode}" = "startfiles" ]; then
227 CT_DoLog EXTRA "Installing C library headers"
229 # use the 'install-headers' makefile target to install the
231 CT_DoExecLog ALL make ${JOBSFLAGS} \
232 install_root=${CT_SYSROOT_DIR} \
233 install-bootstrap-headers=yes \
234 "${extra_make_args[@]}" \
237 # For glibc, a few headers need to be manually installed
238 if [ "${CT_LIBC}" = "glibc" ]; then
239 # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
240 # so do them by hand. We can tolerate an empty stubs.h for the moment.
241 # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
242 mkdir -p "${CT_HEADERS_DIR}/gnu"
243 CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
244 CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h" \
245 "${CT_HEADERS_DIR}/features.h"
247 # Building the bootstrap gcc requires either setting inhibit_libc, or
248 # having a copy of stdio_lim.h... see
249 # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
250 CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
252 # Following error building gcc-4.0.0's gcj:
253 # error: bits/syscall.h: No such file or directory
254 # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
255 # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
258 *) CT_DoExecLog ALL cp -v "misc/syscall-list.h" \
259 "${CT_HEADERS_DIR}/bits/syscall.h"
264 if [ "${CT_THREADS}" = "nptl" ]; then
265 CT_DoLog EXTRA "Installing C library start files"
267 # there are a few object files needed to link shared libraries,
268 # which we build and install by hand
269 CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
270 CT_DoExecLog ALL make ${JOBSFLAGS} \
271 "${extra_make_args[@]}" \
273 CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
274 "${CT_SYSROOT_DIR}/usr/lib"
276 # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.
277 # However, since we will never actually execute its code,
278 # it doesn't matter what it contains. So, treating '/dev/null'
279 # as a C source file, we produce a dummy 'libc.so' in one step
280 CT_DoExecLog ALL "${cross_cc}" -nostdlib \
284 -o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
286 else # libc_mode = final
287 CT_DoLog EXTRA "Building C library"
288 CT_DoExecLog ALL make ${JOBSFLAGS} \
289 "${extra_make_args[@]}" \
292 CT_DoLog EXTRA "Installing C library"
293 CT_DoExecLog ALL make ${JOBSFLAGS} \
294 "${extra_make_args[@]}" \
295 install_root="${CT_SYSROOT_DIR}" \
302 # This function finishes the C library install
308 # Build up the addons list, separated with $1
309 do_libc_add_ons_list() {
311 local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}" \
312 |sed -r -e "s/[[:space:],]/${sep}/g;" \
314 case "${CT_THREADS}" in
316 *) addons_list="${addons_list}${sep}${CT_THREADS}";;
318 [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
319 # Remove duplicate, leading and trailing separators
320 echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
323 # Compute up the minimum supported Linux kernel version
324 do_libc_min_kernel_config() {
325 local min_kernel_config
327 case "${CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
328 *--enable-kernel*) ;;
329 *) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
330 # We can't rely on the kernel version from the configuration,
331 # because it might not be available if the user uses pre-installed
332 # headers. On the other hand, both method will have the kernel
333 # version installed in "usr/include/linux/version.h" in the sysroot.
334 # Parse that instead of having two code-paths.
335 version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
336 if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
337 CT_Abort "Linux version is unavailable in installed headers files"
339 version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
342 version=$(((version_code>>16)&0xFF))
343 patchlevel=$(((version_code>>8)&0xFF))
344 sublevel=$((version_code&0xFF))
345 min_kernel_config="${version}.${patchlevel}.${sublevel}"
346 elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
347 # Trim the fourth part of the linux version, keeping only the first three numbers
348 min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
349 |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
352 echo "--enable-kernel=${min_kernel_config}"