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}-${CT_LIBC_VERSION}"
115 local -a extra_config
116 local -a extra_make_args
118 CT_DoStep INFO "Installing C library"
120 mkdir -p "${CT_BUILD_DIR}/build-libc"
121 cd "${CT_BUILD_DIR}/build-libc"
123 CT_DoLog EXTRA "Configuring C library"
127 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
128 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
130 if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
137 # glibc can't be built without -O2 (reference needed!)
139 # Also, if those two are missing, iconv build breaks
140 extra_config+=( --disable-debug --disable-sanity-checks )
144 # Add some default glibc config options if not given by user.
145 # We don't need to be conditional on wether the user did set different
146 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
148 extra_config+=("$(do_libc_min_kernel_config)")
150 case "${CT_THREADS}" in
151 nptl) extra_config+=("--with-__thread" "--with-tls");;
152 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
153 none) extra_config+=("--without-__thread" "--without-nptl")
154 case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
156 *) extra_config+=("--without-tls");;
161 case "${CT_SHARED_LIBS}" in
162 y) extra_config+=("--enable-shared");;
163 *) extra_config+=("--disable-shared");;
166 case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
167 y,) extra_config+=("--with-fp");;
168 ,y) extra_config+=("--without-fp");;
171 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
172 extra_config+=("--disable-versioning")
175 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
176 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
179 case "$(do_libc_add_ons_list ,)" in
181 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
184 extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
187 if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
188 echo "libc_cv_forced_unwind=yes" >>config.cache
189 echo "libc_cv_c_cleanup=yes" >>config.cache
192 # Pre-seed the configparms file with values from the config option
193 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
195 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
197 CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
198 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
199 CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
200 CT_DoLog DEBUG "Extra CC args passed : '${extra_cc_args}'"
202 # ./configure is mislead by our tools override wrapper for bash
203 # so just tell it where the real bash is _on_the_target_!
205 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
206 # - ${BASH_SHELL} is only used to set BASH
207 # - ${BASH} is only used to set the shebang
208 # in two scripts to run on the target
209 # So we can safely bypass bash detection at compile time.
210 # Should this change in a future eglibc release, we'd better
211 # directly mangle the generated scripts _after_ they get built,
212 # or even after they get installed... eglibc is such a sucker...
213 echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
215 # Configure with --prefix the way we want it on the target...
216 # There are a whole lot of settings here. You'll probably want
217 # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG
218 # Compare these options with the ones used when installing the glibc headers above - they're different.
219 # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
220 # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
221 # Set BUILD_CC, or we won't be able to build datafiles
223 BUILD_CC="${CT_BUILD}-gcc" \
224 CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}" \
225 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
227 RANLIB=${CT_TARGET}-ranlib \
229 "${src_dir}/configure" \
231 --build=${CT_BUILD} \
232 --host=${CT_TARGET} \
233 --cache-file="$(pwd)/config.cache" \
237 --with-headers="${CT_HEADERS_DIR}" \
238 "${extra_config[@]}" \
239 ${CT_LIBC_GLIBC_EXTRA_CONFIG}
242 case "${CT_ARCH},${CT_ARCH_CPU}" in
244 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
245 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
246 extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
250 CT_DoLog EXTRA "Building C library"
251 CT_DoExecLog ALL make ${JOBSFLAGS} \
252 "${extra_make_args[@]}" \
255 CT_DoLog EXTRA "Installing C library"
256 CT_DoExecLog ALL make ${JOBSFLAGS} \
257 "${extra_make_args[@]}" \
258 install_root="${CT_SYSROOT_DIR}" \
264 # This function finishes the C library install
270 # Build up the addons list, separated with $1
271 do_libc_add_ons_list() {
273 local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}" \
274 |sed -r -e "s/[[:space:],]/${sep}/g;" \
276 case "${CT_THREADS}" in
278 *) addons_list="${addons_list}${sep}${CT_THREADS}";;
280 [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
281 # Remove duplicate, leading and trailing separators
282 echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
285 # Compute up the minimum supported Linux kernel version
286 do_libc_min_kernel_config() {
287 local min_kernel_config
289 case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
290 *--enable-kernel*) ;;
291 *) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
292 # We can't rely on the kernel version from the configuration,
293 # because it might not be available if the user uses pre-installed
294 # headers. On the other hand, both method will have the kernel
295 # version installed in "usr/include/linux/version.h" in the sysroot.
296 # Parse that instead of having two code-paths.
297 version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
298 if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
299 CT_Abort "Linux version is unavailable in installed headers files"
301 version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
304 version=$(((version_code>>16)&0xFF))
305 patchlevel=$(((version_code>>8)&0xFF))
306 sublevel=$((version_code&0xFF))
307 min_kernel_config="${version}.${patchlevel}.${sublevel}"
308 elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
309 # Trim the fourth part of the linux version, keeping only the first three numbers
310 min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
311 |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
314 echo "--enable-kernel=${min_kernel_config}"