libc/glibc-eglibc: misc janitorial cleanups.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
1 # This file contains the functions common to glibc and eglibc
3 # Build and install headers file
9 # Build and install headers and start files
10 do_libc_start_files() {
11 local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
13 CT_DoStep INFO "Installing C library headers & start files"
15 mkdir -p "${CT_BUILD_DIR}/build-libc-startfiles"
16 cd "${CT_BUILD_DIR}/build-libc-startfiles"
18 CT_DoLog EXTRA "Configuring C library"
22 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
23 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
28 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
29 cross_cxx=$(CT_Which "${CT_TARGET}-g++")
30 cross_ar=$(CT_Which "${CT_TARGET}-ar")
31 cross_ranlib=$(CT_Which "${CT_TARGET}-ranlib")
33 CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
34 CT_DoLog DEBUG "Using g++ for target: '${cross_cxx}'"
35 CT_DoLog DEBUG "Using ar for target: '${cross_ar}'"
36 CT_DoLog DEBUG "Using ranlib for target: '${cross_ranlib}'"
38 BUILD_CC="${CT_BUILD}-gcc" \
42 RANLIB=${cross_ranlib} \
44 "${src_dir}/configure" \
46 --with-headers="${CT_HEADERS_DIR}" \
47 --build="${CT_BUILD}" \
48 --host="${CT_TARGET}" \
54 CT_DoLog EXTRA "Installing C library headers"
56 # use the 'install-headers' makefile target to install the
58 CT_DoExecLog ALL make ${JOBSFLAGS} \
59 install_root=${CT_SYSROOT_DIR} \
60 install-bootstrap-headers=yes \
63 # For glibc, a few headers need to be manually installed
64 if [ "${CT_LIBC}" = "glibc" ]; then
65 # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
66 # so do them by hand. We can tolerate an empty stubs.h for the moment.
67 # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
68 mkdir -p "${CT_HEADERS_DIR}/gnu"
69 CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
70 CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h" \
71 "${CT_HEADERS_DIR}/features.h"
73 # Building the bootstrap gcc requires either setting inhibit_libc, or
74 # having a copy of stdio_lim.h... see
75 # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
76 CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
78 # Following error building gcc-4.0.0's gcj:
79 # error: bits/syscall.h: No such file or directory
80 # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
81 # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
82 [ "${CT_ARCH}" != "arm" ] && CT_DoExecLog ALL cp -v misc/syscall-list.h "${CT_HEADERS_DIR}/bits/syscall.h" || true
85 CT_DoLog EXTRA "Installing C library start files"
87 # there are a few object files needed to link shared libraries,
88 # which we build and install by hand
89 CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
90 CT_DoExecLog ALL make ${JOBSFLAGS} csu/subdir_lib
91 CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
92 "${CT_SYSROOT_DIR}/usr/lib"
94 # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.
95 # However, since we will never actually execute its code,
96 # it doesn't matter what it contains. So, treating '/dev/null'
97 # as a C source file, we produce a dummy 'libc.so' in one step
98 CT_DoExecLog ALL "${cross_cc}" -nostdlib \
102 -o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
107 # This function builds and install the full C library
109 local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
111 local -a extra_config
112 local -a extra_make_args
114 CT_DoStep INFO "Installing C library"
116 mkdir -p "${CT_BUILD_DIR}/build-libc"
117 cd "${CT_BUILD_DIR}/build-libc"
119 CT_DoLog EXTRA "Configuring C library"
123 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
124 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
126 if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
133 # glibc can't be built without -O2 (reference needed!)
135 # Also, if those two are missing, iconv build breaks
136 extra_config+=( --disable-debug --disable-sanity-checks )
140 # Add some default glibc config options if not given by user.
141 # We don't need to be conditional on wether the user did set different
142 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
144 extra_config+=("$(do_libc_min_kernel_config)")
146 case "${CT_THREADS}" in
147 nptl) extra_config+=("--with-__thread" "--with-tls");;
148 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
149 none) extra_config+=("--without-__thread" "--without-nptl")
150 case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
152 *) extra_config+=("--without-tls");;
157 case "${CT_SHARED_LIBS}" in
158 y) extra_config+=("--enable-shared");;
159 *) extra_config+=("--disable-shared");;
162 case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
163 y,) extra_config+=("--with-fp");;
164 ,y) extra_config+=("--without-fp");;
167 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
168 extra_config+=("--disable-versioning")
171 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
172 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
175 case "$(do_libc_add_ons_list ,)" in
177 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
180 extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
182 # Pre-seed the configparms file with values from the config option
183 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
185 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
187 CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
188 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
189 CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
190 CT_DoLog DEBUG "Extra CC args passed : '${extra_cc_args}'"
192 # ./configure is mislead by our tools override wrapper for bash
193 # so just tell it where the real bash is _on_the_target_!
195 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
196 # - ${BASH_SHELL} is only used to set BASH
197 # - ${BASH} is only used to set the shebang
198 # in two scripts to run on the target
199 # So we can safely bypass bash detection at compile time.
200 # Should this change in a future eglibc release, we'd better
201 # directly mangle the generated scripts _after_ they get built,
202 # or even after they get installed... eglibc is such a sucker...
203 echo "ac_cv_path_BASH_SHELL=/bin/bash" >config.cache
205 # Configure with --prefix the way we want it on the target...
206 # There are a whole lot of settings here. You'll probably want
207 # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG
208 # Compare these options with the ones used when installing the glibc headers above - they're different.
209 # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
210 # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
211 # Set BUILD_CC, or we won't be able to build datafiles
213 BUILD_CC="${CT_BUILD}-gcc" \
214 CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}" \
215 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
217 RANLIB=${CT_TARGET}-ranlib \
219 "${src_dir}/configure" \
221 --build=${CT_BUILD} \
222 --host=${CT_TARGET} \
226 --cache-file=config.cache \
227 --with-headers="${CT_HEADERS_DIR}" \
228 "${extra_config[@]}" \
229 ${CT_LIBC_GLIBC_EXTRA_CONFIG}
232 case "${CT_ARCH},${CT_ARCH_CPU}" in
234 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
235 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
236 extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
240 CT_DoLog EXTRA "Building C library"
241 CT_DoExecLog ALL make ${JOBSFLAGS} \
242 "${extra_make_args[@]}" \
245 CT_DoLog EXTRA "Installing C library"
246 CT_DoExecLog ALL make ${JOBSFLAGS} \
247 "${extra_make_args[@]}" \
248 install_root="${CT_SYSROOT_DIR}" \
254 # This function finishes the C library install
260 # Build up the addons list, separated with $1
261 do_libc_add_ons_list() {
263 local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}" \
264 |sed -r -e "s/[[:space:],]/${sep}/g;" \
266 case "${CT_THREADS}" in
268 *) addons_list="${addons_list}${sep}${CT_THREADS}";;
270 [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
271 # Remove duplicate, leading and trailing separators
272 echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
275 # Compute up the minimum supported Linux kernel version
276 do_libc_min_kernel_config() {
277 local min_kernel_config
279 case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
280 *--enable-kernel*) ;;
281 *) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
282 # We can't rely on the kernel version from the configuration,
283 # because it might not be available if the user uses pre-installed
284 # headers. On the other hand, both method will have the kernel
285 # version installed in "usr/include/linux/version.h" in the sys-root.
286 # Parse that instead of having two code-paths.
287 version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
288 if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
289 CT_Abort "Linux version is unavailable in installed headers files"
291 version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
294 version=$(((version_code>>16)&0xFF))
295 patchlevel=$(((version_code>>8)&0xFF))
296 sublevel=$((version_code&0xFF))
297 min_kernel_config="${version}.${patchlevel}.${sublevel}"
298 elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
299 # Trim the fourth part of the linux version, keeping only the first three numbers
300 min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
301 |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
304 echo "--enable-kernel=${min_kernel_config}"