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="${CT_TARGET}" \
54 CT_DoLog EXTRA "Installing C library headers"
56 # use the 'install-headers' makefile target to install the
59 make install-headers \
60 install_root=${CT_SYSROOT_DIR} \
61 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 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}"
110 local -a extra_config
111 local -a extra_make_args
113 CT_DoStep INFO "Installing C library"
115 mkdir -p "${CT_BUILD_DIR}/build-libc"
116 cd "${CT_BUILD_DIR}/build-libc"
118 CT_DoLog EXTRA "Configuring C library"
122 if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
123 CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
125 if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
133 # Add some default glibc config options if not given by user.
134 # We don't need to be conditional on wether the user did set different
135 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
137 extra_config+=("$(do_libc_min_kernel_config)")
139 case "${CT_THREADS}" in
140 nptl) extra_config+=("--with-__thread" "--with-tls");;
141 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
142 none) extra_config+=("--without-__thread" "--without-nptl")
143 case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
145 *) extra_config+=("--without-tls");;
150 case "${CT_SHARED_LIBS}" in
151 y) extra_config+=("--enable-shared");;
152 *) extra_config+=("--disable-shared");;
155 case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
156 y,) extra_config+=("--with-fp");;
157 ,y) extra_config+=("--without-fp");;
160 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
161 extra_config+=("--disable-versioning")
164 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
165 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
168 case "$(do_libc_add_ons_list ,)" in
170 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
173 extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
175 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
177 CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
178 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
179 CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
180 CT_DoLog DEBUG "Extra CC args passed : '${extra_cc_args}'"
182 # ./configure is mislead by our tools override wrapper for bash
183 # so just tell it where the real bash is _on_the_target_!
185 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
186 # - ${BASH_SHELL} is only used to set BASH
187 # - ${BASH} is only used to set the shebang
188 # in two scripts to run on the target
189 # So we can safely bypass bash detection at compile time.
190 # Should this change in a future eglibc release, we'd better
191 # directly mangle the generated scripts _after_ they get built,
192 # or even after they get installed... eglibc is such a sucker...
193 echo "ac_cv_path_BASH_SHELL=/bin/bash" >config.cache
195 BUILD_CC="${CT_BUILD}-gcc" \
196 CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}" \
197 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
199 RANLIB=${CT_TARGET}-ranlib \
201 "${src_dir}/configure" \
203 --with-headers="${CT_HEADERS_DIR}" \
204 --build=${CT_BUILD} \
205 --host=${CT_TARGET} \
209 --cache-file=config.cache \
210 "${extra_config[@]}" \
211 ${CT_LIBC_GLIBC_EXTRA_CONFIG}
213 CT_DoLog EXTRA "Building C library"
218 case "${CT_ARCH},${CT_ARCH_CPU}" in
220 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
221 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
222 extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
228 CT_DoExecLog ALL make -j${CT_PARALLEL_JOBS} "${extra_make_args[@]}"
230 CT_DoLog EXTRA "Installing C library"
232 CT_DoExecLog ALL make install "${extra_make_args[@]}" install_root="${CT_SYSROOT_DIR}"
237 # This function finishes the C library install
243 # Build up the addons list, separated with $1
244 do_libc_add_ons_list() {
246 local addons_list=$(echo "${CT_LIBC_ADDONS_LIST//,/${sep}}" |tr -s ,)
247 case "${CT_THREADS}" in
249 *) addons_list="${addons_list}${sep}${CT_THREADS}";;
251 [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
252 addons_list="${addons_list%%${sep}}"
253 echo "${addons_list##${sep}}"
256 # Compute up the minimum supported Linux kernel version
257 do_libc_min_kernel_config() {
258 local min_kernel_config
260 case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
261 *--enable-kernel*) ;;
262 *) if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
263 # We can't rely on the kernel version from the configuration,
264 # because it might not be available if the user uses pre-installed
265 # headers. On the other hand, both method will have the kernel
266 # version installed in "usr/include/linux/version.h" in the sys-root.
267 # Parse that instead of having two code-paths.
268 version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
269 if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
270 CT_Abort "Linux version is unavailable in installed headers files"
272 version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}" \
275 version=$(((version_code>>16)&0xFF))
276 patchlevel=$(((version_code>>8)&0xFF))
277 sublevel=$((version_code&0xFF))
278 min_kernel_config="${version}.${patchlevel}.${sublevel}"
279 elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
280 # Trim the fourth part of the linux version, keeping only the first three numbers
281 min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}" \
282 |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;')" \
285 echo "--enable-kernel=${min_kernel_config}"