1 # This file contains the functions common to glibc and eglibc
3 # Build and install headers and start files
4 do_libc_start_files() {
5 local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
7 CT_DoStep INFO "Installing C library headers & start files"
9 mkdir -p "${CT_BUILD_DIR}/build-libc-startfiles"
10 cd "${CT_BUILD_DIR}/build-libc-startfiles"
12 CT_DoLog EXTRA "Configuring C library"
16 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
17 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
22 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
23 cross_cxx=$(CT_Which "${CT_TARGET}-g++")
24 cross_ar=$(CT_Which "${CT_TARGET}-ar")
25 cross_ranlib=$(CT_Which "${CT_TARGET}-ranlib")
27 CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
28 CT_DoLog DEBUG "Using g++ for target: '${cross_cxx}'"
29 CT_DoLog DEBUG "Using ar for target: '${cross_ar}'"
30 CT_DoLog DEBUG "Using ranlib for target: '${cross_ranlib}'"
33 if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
34 echo "libc_cv_forced_unwind=yes" >>config.cache
35 echo "libc_cv_c_cleanup=yes" >>config.cache
38 # Pre-seed the configparms file with values from the config option
39 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
41 BUILD_CC="${CT_BUILD}-gcc" \
45 RANLIB=${cross_ranlib} \
47 "${src_dir}/configure" \
49 --with-headers="${CT_HEADERS_DIR}" \
50 --build="${CT_BUILD}" \
51 --host="${CT_TARGET}" \
52 --cache-file="$(pwd)/config.cache" \
58 CT_DoLog EXTRA "Installing C library headers"
60 # use the 'install-headers' makefile target to install the
62 CT_DoExecLog ALL make ${JOBSFLAGS} \
63 install_root=${CT_SYSROOT_DIR} \
64 install-bootstrap-headers=yes \
67 # For glibc, a few headers need to be manually installed
68 if [ "${CT_LIBC}" = "glibc" ]; then
69 # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
70 # so do them by hand. We can tolerate an empty stubs.h for the moment.
71 # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
72 mkdir -p "${CT_HEADERS_DIR}/gnu"
73 CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
74 CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h" \
75 "${CT_HEADERS_DIR}/features.h"
77 # Building the bootstrap gcc requires either setting inhibit_libc, or
78 # having a copy of stdio_lim.h... see
79 # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
80 CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
82 # Following error building gcc-4.0.0's gcj:
83 # error: bits/syscall.h: No such file or directory
84 # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
85 # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
86 [ "${CT_ARCH}" != "arm" ] && CT_DoExecLog ALL cp -v misc/syscall-list.h "${CT_HEADERS_DIR}/bits/syscall.h" || true
89 CT_DoLog EXTRA "Installing C library start files"
91 # there are a few object files needed to link shared libraries,
92 # which we build and install by hand
93 CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
94 CT_DoExecLog ALL make ${JOBSFLAGS} csu/subdir_lib
95 CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
96 "${CT_SYSROOT_DIR}/usr/lib"
98 # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.
99 # However, since we will never actually execute its code,
100 # it doesn't matter what it contains. So, treating '/dev/null'
101 # as a C source file, we produce a dummy 'libc.so' in one step
102 CT_DoExecLog ALL "${cross_cc}" -nostdlib \
106 -o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
111 # This function builds and install the full C library
113 local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
115 local -a extra_config
116 local -a extra_make_args
119 CT_DoStep INFO "Installing C library"
121 mkdir -p "${CT_BUILD_DIR}/build-libc"
122 cd "${CT_BUILD_DIR}/build-libc"
124 CT_DoLog EXTRA "Configuring C library"
128 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
129 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
131 if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
138 # glibc can't be built without -O2 (reference needed!)
140 # Also, if those two are missing, iconv build breaks
141 extra_config+=( --disable-debug --disable-sanity-checks )
145 # Add some default glibc config options if not given by user.
146 # We don't need to be conditional on wether the user did set different
147 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
149 extra_config+=("$(do_libc_min_kernel_config)")
151 case "${CT_THREADS}" in
152 nptl) extra_config+=("--with-__thread" "--with-tls");;
153 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
154 none) extra_config+=("--without-__thread" "--without-nptl")
155 case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
157 *) extra_config+=("--without-tls");;
162 case "${CT_SHARED_LIBS}" in
163 y) extra_config+=("--enable-shared");;
164 *) extra_config+=("--disable-shared");;
167 case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
168 y,) extra_config+=("--with-fp");;
169 ,y) extra_config+=("--without-fp");;
172 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
173 extra_config+=("--disable-versioning")
176 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
177 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
180 case "$(do_libc_add_ons_list ,)" in
182 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
185 extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
188 if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
189 echo "libc_cv_forced_unwind=yes" >>config.cache
190 echo "libc_cv_c_cleanup=yes" >>config.cache
193 # Pre-seed the configparms file with values from the config option
194 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
196 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
198 CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
199 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
200 CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
201 CT_DoLog DEBUG "Extra CC args passed : '${extra_cc_args}'"
203 glibc_cflags="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}"
204 case "${CT_LIBC_ENABLE_FORTIFIED_BUILD}" in
206 *) glibc_cflags+=" -U_FORTIFY_SOURCE";;
209 # ./configure is mislead by our tools override wrapper for bash
210 # so just tell it where the real bash is _on_the_target_!
212 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
213 # - ${BASH_SHELL} is only used to set BASH
214 # - ${BASH} is only used to set the shebang
215 # in two scripts to run on the target
216 # So we can safely bypass bash detection at compile time.
217 # Should this change in a future eglibc release, we'd better
218 # directly mangle the generated scripts _after_ they get built,
219 # or even after they get installed... eglibc is such a sucker...
220 echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
222 # Configure with --prefix the way we want it on the target...
223 # There are a whole lot of settings here. You'll probably want
224 # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG
225 # Compare these options with the ones used when installing the glibc headers above - they're different.
226 # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
227 # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
228 # Set BUILD_CC, or we won't be able to build datafiles
230 BUILD_CC="${CT_BUILD}-gcc" \
231 CFLAGS="${glibc_cflags}" \
232 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
234 RANLIB=${CT_TARGET}-ranlib \
236 "${src_dir}/configure" \
238 --build=${CT_BUILD} \
239 --host=${CT_TARGET} \
240 --cache-file="$(pwd)/config.cache" \
244 --with-headers="${CT_HEADERS_DIR}" \
245 "${extra_config[@]}" \
246 ${CT_LIBC_GLIBC_EXTRA_CONFIG}
249 case "${CT_ARCH},${CT_ARCH_CPU}" in
251 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
252 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
253 extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
257 CT_DoLog EXTRA "Building C library"
258 CT_DoExecLog ALL make ${JOBSFLAGS} \
259 "${extra_make_args[@]}" \
262 CT_DoLog EXTRA "Installing C library"
263 CT_DoExecLog ALL make ${JOBSFLAGS} \
264 "${extra_make_args[@]}" \
265 install_root="${CT_SYSROOT_DIR}" \
271 # This function finishes the C library install
277 # Build up the addons list, separated with $1
278 do_libc_add_ons_list() {
280 local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}" \
281 |sed -r -e "s/[[:space:],]/${sep}/g;" \
283 case "${CT_THREADS}" in
285 *) addons_list="${addons_list}${sep}${CT_THREADS}";;
287 [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
288 # Remove duplicate, leading and trailing separators
289 echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
292 # Compute up the minimum supported Linux kernel version
293 do_libc_min_kernel_config() {
294 local min_kernel_config
296 case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
297 *--enable-kernel*) ;;
298 *) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
299 # We can't rely on the kernel version from the configuration,
300 # because it might not be available if the user uses pre-installed
301 # headers. On the other hand, both method will have the kernel
302 # version installed in "usr/include/linux/version.h" in the sysroot.
303 # Parse that instead of having two code-paths.
304 version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
305 if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
306 CT_Abort "Linux version is unavailable in installed headers files"
308 version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
311 version=$(((version_code>>16)&0xFF))
312 patchlevel=$(((version_code>>8)&0xFF))
313 sublevel=$((version_code&0xFF))
314 min_kernel_config="${version}.${patchlevel}.${sublevel}"
315 elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
316 # Trim the fourth part of the linux version, keeping only the first three numbers
317 min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
318 |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
321 echo "--enable-kernel=${min_kernel_config}"