1 # This file adds functions to build glibc
2 # Copyright 2007 Yann E. MORIN
3 # Licensed under the GPL v2. See COPYING in the root of this package
5 # Add the definitions common to glibc and eglibc
8 . "${CT_LIB_DIR}/scripts/build/libc/glibc-eglibc.sh-common"
16 addons_list=($(do_libc_add_ons_list " "))
19 CT_GetFile "glibc-${CT_LIBC_VERSION}" \
20 {ftp,http}://ftp.gnu.org/gnu/glibc \
21 ftp://gcc.gnu.org/pub/glibc/releases \
22 ftp://gcc.gnu.org/pub/glibc/snapshots
25 for addon in "${addons_list[@]}"; do
26 # NPTL addon is not to be downloaded, in any case
27 [ "${addon}" = "nptl" ] && continue || true
28 CT_GetFile "glibc-${addon}-${CT_LIBC_VERSION}" \
29 {ftp,http}://ftp.gnu.org/gnu/glibc \
30 ftp://gcc.gnu.org/pub/glibc/releases \
31 ftp://gcc.gnu.org/pub/glibc/snapshots
41 addons_list=($(do_libc_add_ons_list " "))
43 CT_Extract "glibc-${CT_LIBC_VERSION}"
45 CT_Pushd "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}"
46 CT_Patch nochdir "glibc" "${CT_LIBC_VERSION}"
49 for addon in "${addons_list[@]}"; do
50 # NPTL addon is not to be extracted, in any case
51 [ "${addon}" = "nptl" ] && continue || true
52 CT_Extract nochdir "glibc-${addon}-${CT_LIBC_VERSION}"
54 # Some addons have the 'long' name, while others have the
55 # 'short' name, but patches are non-uniformly built with
56 # either the 'long' or 'short' name, whatever the addons name
57 # so we have to make symlinks from the existing to the missing
58 # Fortunately for us, [ -d foo ], when foo is a symlink to a
59 # directory, returns true!
60 [ -d "${addon}" ] || CT_DoExecLog ALL ln -s "glibc-${addon}-${CT_LIBC_VERSION}" "${addon}"
61 [ -d "glibc-${addon}-${CT_LIBC_VERSION}" ] || CT_DoExecLog ALL ln -s "${addon}" "glibc-${addon}-${CT_LIBC_VERSION}"
62 CT_Patch nochdir "glibc" "${addon}-${CT_LIBC_VERSION}"
65 # The configure files may be older than the configure.in files
66 # if using a snapshot (or even some tarballs). Fake them being
69 find . -type f -name configure -exec touch {} \; 2>&1 |CT_DoLog ALL
76 # There is nothing to do for glibc check config
77 do_libc_check_config() {
81 # This function builds and install the full glibc
85 CT_DoStep INFO "Installing C library"
87 mkdir -p "${CT_BUILD_DIR}/build-libc"
88 cd "${CT_BUILD_DIR}/build-libc"
90 CT_DoLog EXTRA "Configuring C library"
92 # Add some default glibc config options if not given by user.
93 # We don't need to be conditional on wether the user did set different
94 # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
96 case "${CT_THREADS}" in
97 nptl) extra_config+=("--with-__thread" "--with-tls");;
98 linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
99 none) extra_config+=("--without-__thread" "--without-nptl")
100 case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
102 *) extra_config+=("--without-tls");;
107 case "${CT_SHARED_LIBS}" in
108 y) extra_config+=("--enable-shared");;
109 *) extra_config+=("--disable-shared");;
112 case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
113 y,) extra_config+=("--with-fp");;
114 ,y) extra_config+=("--without-fp");;
117 if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
118 extra_config+=("--disable-versioning")
121 if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
122 extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
125 case "$(do_libc_add_ons_list ,)" in
127 *) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
130 extra_config+=("$(do_libc_min_kernel_config)")
132 # Add some default CC args
133 glibc_version="$( grep -E '\<VERSION\>' "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/version.h" \
136 glibc_version_major=$(echo ${glibc_version} |sed -r -e 's/^([[:digit:]]+).*/\1/')
137 glibc_version_minor=$(echo ${glibc_version} |sed -r -e 's/^[[:digit:]]+[\.-_]([[:digit:]]+).*/\1/')
138 if [ ${glibc_version_major} -eq 2 -a ${glibc_version_minor} -ge 6 \
139 -o ${glibc_version_major} -gt 2 ]; then
140 # Don't use -pipe: configure chokes on it for glibc >= 2.6.
141 CT_Test 'Removing "-pipe" for use with glibc>=2.6' "${CT_USE_PIPES}" = "y"
142 extra_cc_args="${CT_CFLAGS_FOR_HOST/-pipe}"
144 extra_cc_args="${CT_CFLAGS_FOR_HOST}"
146 extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
148 cross_cc=$(CT_Which "${CT_TARGET}-gcc")
149 CT_DoLog DEBUG "Using gcc for target : '${cross_cc}'"
150 CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
151 CT_DoLog DEBUG "Extra config args passed: '${extra_config}'"
152 CT_DoLog DEBUG "Extra CC args passed : '${extra_cc_args}'"
154 # Pre-seed the configparms file with values from the config option
155 printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
157 # For glibc 2.3.4 and later we need to set some autoconf cache
158 # variables, because nptl/sysdeps/pthread/configure.in does not
159 # work when cross-compiling.
160 if [ "${CT_THREADS}" = "nptl" ]; then
161 echo libc_cv_forced_unwind=yes
162 echo libc_cv_c_cleanup=yes
165 # ./configure is mislead by our tools override wrapper for bash
166 # so just tell it where the real bash is _on_the_target_!
168 # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
169 # - ${BASH_SHELL} is only used to set BASH
170 # - ${BASH} is only used to set the shebang
171 # in two scripts to run on the target
172 # So we can safely bypass bash detection at compile time.
173 # Should this change in a future glibc release, we'd better
174 # directly mangle the generated scripts _after_ they get built,
175 # or even after they get installed... glibc is such a sucker...
176 echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
178 # Configure with --prefix the way we want it on the target...
179 # There are a whole lot of settings here. You'll probably want
180 # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG
181 # Compare these options with the ones used when installing the glibc headers above - they're different.
182 # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
183 # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
184 # Set BUILD_CC, or you won't be able to build datafiles
185 # Set --build, else glibc-2.3.2 will think you're not cross-compiling, and try to run the test programs
187 # OK. I'm fed up with those folks telling me what I should do.
188 # I don't configure nptl? Well, maybe that's purposedly because
189 # I don't want nptl! --disable-sanity-checks will shut up those
190 # silly messages. GNU folks again, he?
192 BUILD_CC="${CT_BUILD}-gcc" \
193 CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} -O2" \
194 CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
196 RANLIB=${CT_TARGET}-ranlib \
198 "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/configure" \
200 --build=${CT_BUILD} \
201 --host=${CT_TARGET} \
206 --disable-sanity-checks \
207 --cache-file=config.cache \
208 --with-headers="${CT_HEADERS_DIR}" \
209 "${extra_config[@]}" \
210 ${CT_LIBC_GLIBC_EXTRA_CONFIG}
212 # glibc initial build hacks
213 # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
214 case "${CT_ARCH},${CT_ARCH_CPU}" in
216 CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
217 GLIBC_INITIAL_BUILD_ASFLAGS="-DBROKEN_PPC_8xx_CPU15";;
220 # If this fails with an error like this:
221 # ... linux/autoconf.h: No such file or directory
222 # then you need to set the KERNELCONFIG variable to point to a .config file for this arch.
223 # The following architectures are known to need kernel .config: alpha, arm, ia64, s390, sh, sparc
224 # Note: LD and RANLIB needed by glibc-2.1.3's c_stub directory, at least on macosx
225 CT_DoLog EXTRA "Building C library"
226 CT_DoExecLog ALL make LD=${CT_TARGET}-ld \
227 RANLIB=${CT_TARGET}-ranlib \
228 OBJDUMP_FOR_HOST="${CT_TARGET}-objdump" \
229 ASFLAGS="${GLIBC_INITIAL_BUILD_ASFLAGS}" \
232 CT_DoLog EXTRA "Installing C library"
233 CT_DoExecLog ALL make install_root="${CT_SYSROOT_DIR}" \
234 ${LIBC_SYSROOT_ARG} \
235 OBJDUMP_FOR_HOST="${CT_TARGET}-objdump" \
238 # This doesn't seem to work when building a crosscompiler,
239 # as it tries to execute localedef using the just-built ld.so!?
240 #CT_DoLog EXTRA "Installing locales"
241 #make localedata/install-locales install_root=${SYSROOT} 2>&1 |CT_DoLog ALL
243 # Fix problems in linker scripts.
245 # Remove lines containing BUG per http://sources.redhat.com/ml/bug-glibc/2003-05/msg00055.html,
246 # needed to fix gcc-3.2.3/glibc-2.3.2 targeting arm
247 # No need to look into the lib64/ dirs here and there, they point to the
248 # corresponding lib/ directories.
250 # To make "strip *.so.*" not fail (ptxdist does this), rename to .so_orig rather than .so.orig
251 CT_DoLog EXTRA "Fixing C library linker scripts"
252 for file in libc.so libpthread.so libgcc_s.so; do
253 for dir in lib usr/lib; do
254 if [ -f "${CT_SYSROOT_DIR}/${dir}/${file}" -a ! -L ${CT_SYSROOT_DIR}/$lib/$file ]; then
255 CT_DoExecLog ALL cp -v "${CT_SYSROOT_DIR}/${dir}/${file}" "${CT_SYSROOT_DIR}/${dir}/${file}_orig"
256 CT_DoLog DEBUG "Fixing '${CT_SYS_ROOT_DIR}/${dir}/${file}'"
257 CT_DoExecLog ALL sed -i -r -e '/BUG in libc.scripts.output-format.sed/d' "${CT_SYSROOT_DIR}/${dir}/${file}"