scripts/build/libc/glibc.sh
author Arnaud Vrac <avrac@freebox.fr>
Fri Oct 09 16:22:09 2009 +0200 (2009-10-09)
changeset 1569 a4e30d311569
parent 1558 d2b746e94197
parent 1551 8c40b842e798
child 1627 8aa1d1051a6a
permissions -rw-r--r--
eglibc: add support for user provided option groups

Signed-off-by: Arnaud Vrac <avrac@freebox.fr>
     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
     4 
     5 # Download glibc
     6 do_libc_get() {
     7     local date
     8     local version
     9     local -a addons_list
    10 
    11     addons_list=($(do_libc_add_ons_list " "))
    12 
    13     if [ "${CT_LIBC_GLIBC_TARBALL}" = "y" ]; then
    14         # Use release tarballs
    15         CT_GetFile "glibc-${CT_LIBC_VERSION}"               \
    16                    {ftp,http}://ftp.gnu.org/gnu/glibc       \
    17                    ftp://gcc.gnu.org/pub/glibc/releases     \
    18                    ftp://gcc.gnu.org/pub/glibc/snapshots
    19 
    20         # C library addons
    21         for addon in "${addons_list[@]}"; do
    22             # NPTL addon is not to be downloaded, in any case
    23             [ "${addon}" = "nptl" ] && continue || true
    24             CT_GetFile "glibc-${addon}-${CT_LIBC_VERSION}"      \
    25                        {ftp,http}://ftp.gnu.org/gnu/glibc       \
    26                        ftp://gcc.gnu.org/pub/glibc/releases     \
    27                        ftp://gcc.gnu.org/pub/glibc/snapshots
    28         done
    29     elif [ "${CT_LIBC_GLIBC_CVS}" = "y" ]; then
    30         # Use CVS checkout
    31         version="${CT_LIBC_VERSION//./_}"
    32         date="${CT_LIBC_GLIBC_CVS_date}"
    33 
    34         CT_GetCVS "glibc-cvs-${CT_LIBC_VERSION}"                    \
    35                   ":pserver:anoncvs@sources.redhat.com:/cvs/glibc"  \
    36                   "libc"                                            \
    37                   "glibc-${version}-branch${date:+:}${date}"        \
    38                   "glibc-cvs-${CT_LIBC_VERSION}"
    39 
    40         # C library addons
    41         for addon in "${addons_list[@]}"; do
    42             # NPTL addon is not to be downloaded, in any case
    43             [ "${addon}" = "nptl" ] && continue || true
    44             CT_GetCVS "glibc-${addon}-cvs-${CT_LIBC_VERSION}"           \
    45                       ":pserver:anoncvs@sources.redhat.com:/cvs/glibc"  \
    46                       "${addon}"                                        \
    47                       "glibc-${version}-branch${date:+:}${date}"        \
    48                       "glibc-${addon}-cvs-${CT_LIBC_VERSION}"
    49         done
    50     fi
    51 
    52     return 0
    53 }
    54 
    55 # Extract glibc
    56 do_libc_extract() {
    57     local cvs
    58     local -a addons_list
    59 
    60     addons_list=($(do_libc_add_ons_list " "))
    61 
    62     [ "${CT_LIBC_GLIBC_CVS}" = "y" ] && cvs="cvs-"
    63 
    64     CT_Extract "glibc-${cvs}${CT_LIBC_VERSION}"
    65 
    66     CT_Pushd "${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}"
    67     CT_Patch "glibc-${CT_LIBC_VERSION}" nochdir
    68 
    69     # C library addons
    70     for addon in "${addons_list[@]}"; do
    71         # NPTL addon is not to be extracted, in any case
    72         [ "${addon}" = "nptl" ] && continue || true
    73         CT_Extract "glibc-${addon}-${cvs}${CT_LIBC_VERSION}" nochdir
    74 
    75         # Some addons have the 'long' name, while others have the
    76         # 'short' name, but patches are non-uniformly built with
    77         # either the 'long' or 'short' name, whatever the addons name
    78         # so we have to make symlinks from the existing to the missing
    79         # Fortunately for us, [ -d foo ], when foo is a symlink to a
    80         # directory, returns true!
    81         [ -d "${addon}" ] || CT_DoExecLog ALL ln -s "glibc-${addon}-${cvs}${CT_LIBC_VERSION}" "${addon}"
    82         [ -d "glibc-${addon}-${cvs}${CT_LIBC_VERSION}" ] || CT_DoExecLog ALL ln -s "${addon}" "glibc-${addon}-${cvs}${CT_LIBC_VERSION}"
    83         CT_Patch "glibc-${addon}-${CT_LIBC_VERSION}" nochdir
    84     done
    85 
    86     # The configure files may be older than the configure.in files
    87     # if using a snapshot (or even some tarballs). Fake them being
    88     # up to date.
    89     sleep 2
    90     find . -type f -name configure -exec touch {} \; 2>&1 |CT_DoLog ALL
    91 
    92     CT_Popd
    93 
    94     return 0
    95 }
    96 
    97 # There is nothing to do for glibc check config
    98 do_libc_check_config() {
    99     :
   100 }
   101 
   102 # This function installs the glibc headers needed to build the core compiler
   103 do_libc_headers() {
   104     local cvs
   105     local -a extra_config
   106 
   107     CT_DoStep INFO "Installing C library headers"
   108 
   109     [ "${CT_LIBC_GLIBC_CVS}" = "y" ] && cvs="cvs-"
   110 
   111     mkdir -p "${CT_BUILD_DIR}/build-libc-headers"
   112     cd "${CT_BUILD_DIR}/build-libc-headers"
   113 
   114     CT_DoLog EXTRA "Configuring C library"
   115 
   116     # The following three things have to be done to build glibc-2.3.x, but they don't hurt older versions.
   117     # 1. override CC to keep glibc's configure from using $TARGET-gcc. 
   118     # 2. disable linuxthreads, which needs a real cross-compiler to generate tcb-offsets.h properly
   119     # 3. build with gcc 3.2 or later
   120     # Compare these options with the ones used when building glibc for real below - they're different.
   121     # As of glibc-2.3.2, to get this step to work for hppa-linux, you need --enable-hacker-mode
   122     # so when configure checks to make sure gcc has access to the assembler you just built...
   123     # Alternately, we could put ${PREFIX}/${TARGET}/bin on the path.
   124     # Set --build so maybe we don't have to specify "cross-compiling=yes" below (haven't tried yet)
   125     # Note: the warning
   126     # "*** WARNING: Are you sure you do not want to use the `linuxthreads'"
   127     # *** add-on?"
   128     # is ok here, since all we want are the basic headers at this point.
   129     # Override libc_cv_ppc_machine so glibc-cvs doesn't complain
   130     # 'a version of binutils that supports .machine "altivec" is needed'.
   131 
   132     # We need to remove any threading addon when installing headers
   133     addons_list="$(do_libc_add_ons_list " "                     \
   134                    |sed -r -e 's/\<(nptl|linuxthreads)\>/ /g;'  \
   135                            -e 's/ +/,/g; s/^,+//; s/,+$//;'     \
   136                   )"
   137 
   138     extra_config+=("--enable-add-ons=${addons_list}")
   139 
   140     extra_config+=("${addons_config}")
   141     extra_config+=("$(do_libc_min_kernel_config)")
   142 
   143     # Pre-seed the configparms file with values from the config option
   144     echo "${CT_LIBC_GLIBC_CONFIGPARMS}" > configparms
   145 
   146     cross_cc=$(CT_Which "${CT_TARGET}-gcc")
   147     CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
   148     CT_DoLog DEBUG "Extra config passed : '${extra_config[*]}'"
   149 
   150     libc_cv_ppc_machine=yes                                     \
   151     CC=${cross_cc}                                              \
   152     CT_DoExecLog ALL                                            \
   153     "${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/configure"    \
   154         --build="${CT_BUILD}"                                   \
   155         --host="${CT_TARGET}"                                   \
   156         --prefix=/usr                                           \
   157         --with-headers="${CT_HEADERS_DIR}"                      \
   158         --without-cvs                                           \
   159         --disable-sanity-checks                                 \
   160         --enable-hacker-mode                                    \
   161         "${extra_config[@]}"                                    \
   162         --without-nptl
   163 
   164     CT_DoLog EXTRA "Installing C library headers"
   165 
   166     if grep -q GLIBC_2.3 "${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/ChangeLog"; then
   167         # glibc-2.3.x passes cross options to $(CC) when generating errlist-compat.c,
   168         # which fails without a real cross-compiler.
   169         # Fortunately, we don't need errlist-compat.c, since we just need .h
   170         # files, so work around this by creating a fake errlist-compat.c and
   171         # satisfying its dependencies.
   172         # Another workaround might be to tell configure to not use any cross
   173         # options to $(CC).
   174         # The real fix would be to get install-headers to not generate
   175         # errlist-compat.c.
   176         # Note: BOOTSTRAP_GCC is used by:
   177         # patches/glibc-2.3.5/glibc-mips-bootstrap-gcc-header-install.patch
   178 
   179         libc_cv_ppc_machine=yes                         \
   180         CT_DoExecLog ALL                                \
   181         make CFLAGS="-O2 -DBOOTSTRAP_GCC"               \
   182              OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"    \
   183              PARALLELMFLAGS="${PARALLELMFLAGS}"         \
   184              sysdeps/gnu/errlist.c
   185         mkdir -p stdio-common
   186 
   187         # sleep for 2 seconds for benefit of filesystems with lousy time
   188         # resolution, like FAT, so make knows for sure errlist-compat.c doesn't
   189         # need generating
   190         sleep 2
   191         CT_DoExecLog ALL touch stdio-common/errlist-compat.c
   192     fi
   193     # Note: BOOTSTRAP_GCC (see above)
   194     libc_cv_ppc_machine=yes                         \
   195     CT_DoExecLog ALL                                \
   196     make cross-compiling=yes                        \
   197          install_root=${CT_SYSROOT_DIR}             \
   198          CFLAGS="-O2 -DBOOTSTRAP_GCC"               \
   199          ${LIBC_SYSROOT_ARG}                        \
   200          OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"    \
   201          PARALLELMFLAGS="${PARALLELMFLAGS}"         \
   202          install-headers
   203 
   204     # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
   205     # so do them by hand.  We can tolerate an empty stubs.h for the moment.
   206     # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
   207     mkdir -p "${CT_HEADERS_DIR}/gnu"
   208     CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
   209     CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/include/features.h"  \
   210                            "${CT_HEADERS_DIR}/features.h"
   211 
   212     # Building the bootstrap gcc requires either setting inhibit_libc, or
   213     # having a copy of stdio_lim.h... see
   214     # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
   215     CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
   216 
   217     # Following error building gcc-4.0.0's gcj:
   218     #  error: bits/syscall.h: No such file or directory
   219     # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
   220     # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
   221     [ "${CT_ARCH}" != "arm" ] && CT_DoExecLog ALL cp -v misc/syscall-list.h "${CT_HEADERS_DIR}/bits/syscall.h" || true
   222 
   223     # Those headers are to be manually copied so gcc can build properly
   224     pthread_h="${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/${CT_THREADS}/sysdeps/pthread/pthread.h"
   225     pthreadtypes_h=
   226     case "${CT_THREADS}" in
   227         nptl)
   228             # NOTE: for some archs, the pathes are different, but they are not
   229             # supported by crosstool-NG right now. See original crosstool when they are.
   230             pthread_h="${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/${CT_THREADS}/sysdeps/pthread/pthread.h"
   231             pthreadtypes_h="${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/nptl/sysdeps/unix/sysv/linux/${CT_KERNEL_ARCH}/bits/pthreadtypes.h"
   232             if [ ! -f "${pthreadtypes_h}" ]; then
   233                 pthreadtypes_h="${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/ports/sysdeps/unix/sysv/linux/${CT_KERNEL_ARCH}/nptl/bits/pthreadtypes.h"
   234             fi
   235             ;;
   236         linuxthreads)
   237             pthreadtypes_h="${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h"
   238             ;;
   239         *)
   240             pthread_h=
   241             pthreadtypes_h=
   242             ;;
   243     esac
   244     if [ -n "${pthread_h}" ]; then
   245         CT_DoExecLog ALL cp -v "${pthread_h}" "${CT_HEADERS_DIR}/pthread.h"
   246     fi
   247     if [ -n "${pthreadtypes_h}" ]; then
   248         CT_DoExecLog ALL cp -v "${pthreadtypes_h}" "${CT_HEADERS_DIR}/bits/pthreadtypes.h"
   249     fi
   250 
   251     CT_EndStep
   252 }
   253 
   254 # Build and install start files
   255 do_libc_start_files() {
   256     local cvs
   257     local -a extra_config
   258 
   259     # Needed only in the NPTL case. Otherwise, return.
   260     [ "${CT_THREADS}" = "nptl" ] || return 0
   261 
   262     CT_DoStep INFO "Installing C library start files"
   263 
   264     [ "${CT_LIBC_GLIBC_CVS}" = "y" ] && cvs="cvs-"
   265 
   266     mkdir -p "${CT_BUILD_DIR}/build-libc-startfiles"
   267     cd "${CT_BUILD_DIR}/build-libc-startfiles"
   268 
   269     CT_DoLog EXTRA "Configuring C library"
   270 
   271     # Add some default glibc config options if not given by user.
   272     case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
   273         *-tls*) ;;
   274         *) extra_config+=("--with-tls")
   275     esac
   276     case "${CT_SHARED_LIBS}" in
   277         y) extra_config+=("--enable-shared");;
   278         *) extra_config+=("--disable-shared");;
   279     esac
   280     case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
   281         y,) extra_config+=("--with-fp");;
   282         ,y) extra_config+=("--without-fp");;
   283     esac
   284     # Obviously, we want threads, as we come here only for NPTL
   285     extra_config+=("--with-__thread")
   286 
   287     addons_config="--enable-add-ons=$(do_libc_add_ons_list ,)"
   288     extra_config+=("${addons_config}")
   289 
   290     extra_config+=("$(do_libc_min_kernel_config)")
   291 
   292     # Add some default CC args
   293     glibc_version_major=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^([[:digit:]]+).*/\1/')
   294     glibc_version_minor=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^[[:digit:]]+[\.-_]([[:digit:]]+).*/\1/')
   295     if [    ${glibc_version_major} -eq 2 -a ${glibc_version_minor} -ge 6    \
   296          -o ${glibc_version_major} -gt 2                                    ]; then
   297         # Don't use -pipe: configure chokes on it for glibc >= 2.6.
   298         CT_Test 'Removing "-pipe" for use with glibc>=2.6' "${CT_USE_PIPES}" = "y"
   299         extra_cc_args="${CT_CFLAGS_FOR_HOST/-pipe}"
   300     else
   301         extra_cc_args="${CT_CFLAGS_FOR_HOST}"
   302     fi
   303     extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
   304 
   305     cross_cc=$(CT_Which "${CT_TARGET}-gcc")
   306     CT_DoLog DEBUG "Using gcc for target    : '${cross_cc}'"
   307     CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
   308     CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
   309     CT_DoLog DEBUG "Extra CC args passed    : '${extra_cc_args}'"
   310 
   311     # Pre-seed the configparms file with values from the config option
   312     echo "${CT_LIBC_GLIBC_CONFIGPARMS}" > configparms
   313 
   314     echo "libc_cv_forced_unwind=yes" > config.cache
   315     echo "libc_cv_c_cleanup=yes" >> config.cache
   316 
   317     # Please see the comment for the configure step in do_libc().
   318 
   319     BUILD_CC="${CT_BUILD}-gcc"                                      \
   320     CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} -O2"  \
   321     CC="${cross_cc} ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}"      \
   322     AR=${CT_TARGET}-ar                                              \
   323     RANLIB=${CT_TARGET}-ranlib                                      \
   324     CT_DoExecLog ALL                                                \
   325     "${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/configure"        \
   326         --prefix=/usr                                               \
   327         --build="${CT_BUILD}"                                       \
   328         --host=${CT_TARGET}                                         \
   329         --without-cvs                                               \
   330         --disable-profile                                           \
   331         --disable-debug                                             \
   332         --without-gd                                                \
   333         --with-headers="${CT_HEADERS_DIR}"                          \
   334         --cache-file=config.cache                                   \
   335         "${extra_config[@]}"                                        \
   336         ${CT_LIBC_GLIBC_EXTRA_CONFIG}
   337 
   338     #TODO: should check whether slibdir has been set in configparms to */lib64
   339     #      and copy the startfiles into the appropriate libdir.
   340     CT_DoLog EXTRA "Building C library start files"
   341     CT_DoExecLog ALL make OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"   \
   342                           PARALLELMFLAGS="${PARALLELMFLAGS}"        \
   343                           csu/subdir_lib
   344 
   345     CT_DoLog EXTRA "Installing C library start files"
   346     if [ "${CT_USE_SYSROOT}" = "y" ]; then
   347         CT_DoExecLog ALL cp -fpv csu/crt[1in].o "${CT_SYSROOT_DIR}/usr/lib/"
   348     else
   349         CT_DoExecLog ALL cp -fpv csu/crt[1in].o "${CT_SYSROOT_DIR}/lib/"
   350     fi
   351 
   352     CT_EndStep
   353 }
   354 
   355 # This function builds and install the full glibc
   356 do_libc() {
   357     local cvs
   358     local -a extra_config
   359 
   360     CT_DoStep INFO "Installing C library"
   361 
   362     [ "${CT_LIBC_GLIBC_CVS}" = "y" ] && cvs="cvs-"
   363 
   364     mkdir -p "${CT_BUILD_DIR}/build-libc"
   365     cd "${CT_BUILD_DIR}/build-libc"
   366 
   367     CT_DoLog EXTRA "Configuring C library"
   368 
   369     # Add some default glibc config options if not given by user.
   370     # We don't need to be conditional on wether the user did set different
   371     # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
   372 
   373     case "${CT_THREADS}" in
   374         nptl)           extra_config+=("--with-__thread" "--with-tls");;
   375         linuxthreads)   extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
   376         none)           extra_config+=("--without-__thread" "--without-nptl")
   377                         case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
   378                             *-tls*) ;;
   379                             *) extra_config+=("--without-tls");;
   380                         esac
   381                         ;;
   382     esac
   383 
   384     case "${CT_SHARED_LIBS}" in
   385         y) extra_config+=("--enable-shared");;
   386         *) extra_config+=("--disable-shared");;
   387     esac
   388 
   389     case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
   390         y,) extra_config+=("--with-fp");;
   391         ,y) extra_config+=("--without-fp");;
   392     esac
   393 
   394     case "$(do_libc_add_ons_list ,)" in
   395         "") ;;
   396         *)  extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
   397     esac
   398 
   399     extra_config+=("$(do_libc_min_kernel_config)")
   400 
   401     # Add some default CC args
   402     glibc_version_major=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^([[:digit:]]+).*/\1/')
   403     glibc_version_minor=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^[[:digit:]]+[\.-_]([[:digit:]]+).*/\1/')
   404     if [    ${glibc_version_major} -eq 2 -a ${glibc_version_minor} -ge 6    \
   405          -o ${glibc_version_major} -gt 2                                    ]; then
   406         # Don't use -pipe: configure chokes on it for glibc >= 2.6.
   407         CT_Test 'Removing "-pipe" for use with glibc>=2.6' "${CT_USE_PIPES}" = "y"
   408         extra_cc_args="${CT_CFLAGS_FOR_HOST/-pipe}"
   409     else
   410         extra_cc_args="${CT_CFLAGS_FOR_HOST}"
   411     fi
   412     extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
   413 
   414     cross_cc=$(CT_Which "${CT_TARGET}-gcc")
   415     CT_DoLog DEBUG "Using gcc for target    : '${cross_cc}'"
   416     CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
   417     CT_DoLog DEBUG "Extra config args passed: '${extra_config}'"
   418     CT_DoLog DEBUG "Extra CC args passed    : '${extra_cc_args}'"
   419 
   420     # Pre-seed the configparms file with values from the config option
   421     echo "${CT_LIBC_GLIBC_CONFIGPARMS}" > configparms
   422 
   423     # For glibc 2.3.4 and later we need to set some autoconf cache
   424     # variables, because nptl/sysdeps/pthread/configure.in does not
   425     # work when cross-compiling.
   426     if [ "${CT_THREADS}" = "nptl" ]; then
   427         echo libc_cv_forced_unwind=yes
   428         echo libc_cv_c_cleanup=yes
   429     fi >config.cache
   430 
   431     # Configure with --prefix the way we want it on the target...
   432     # There are a whole lot of settings here.  You'll probably want
   433     # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG
   434     # Compare these options with the ones used when installing the glibc headers above - they're different.
   435     # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory" 
   436     # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html. 
   437     # Set BUILD_CC, or you won't be able to build datafiles
   438     # Set --build, else glibc-2.3.2 will think you're not cross-compiling, and try to run the test programs
   439 
   440     # OK. I'm fed up with those folks telling me what I should do.
   441     # I don't configure nptl? Well, maybe that's purposedly because
   442     # I don't want nptl! --disable-sanity-checks will shut up those
   443     # silly messages. GNU folks again, he?
   444 
   445     BUILD_CC="${CT_BUILD}-gcc"                                      \
   446     CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} -O2"  \
   447     CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
   448     AR=${CT_TARGET}-ar                                              \
   449     RANLIB=${CT_TARGET}-ranlib                                      \
   450     CT_DoExecLog ALL                                                \
   451     "${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/configure"        \
   452         --prefix=/usr                                               \
   453         --build=${CT_BUILD}                                         \
   454         --host=${CT_TARGET}                                         \
   455         --without-cvs                                               \
   456         --disable-profile                                           \
   457         --disable-debug                                             \
   458         --without-gd                                                \
   459         --disable-sanity-checks                                     \
   460         --cache-file=config.cache                                   \
   461         --with-headers="${CT_HEADERS_DIR}"                          \
   462         "${extra_config[@]}"                                        \
   463         ${CT_LIBC_GLIBC_EXTRA_CONFIG}
   464 
   465     if grep -l '^install-lib-all:' "${CT_SRC_DIR}/glibc-${cvs}${CT_LIBC_VERSION}/Makerules" > /dev/null; then
   466         # nptl-era glibc.
   467         # If the install-lib-all target (which is added by our make-install-lib-all.patch)
   468         # is present, it means we're building glibc-2.3.3 or later, and we can't
   469         # build programs yet, as they require libeh, which won't be installed
   470         # until full build of gcc
   471         # YEM-FIXME: This comment is misleading: latest glibc-s do not have the
   472         #            make-install-lib-all.patch applied, so do not pass through this
   473         #            part of the if statement; nonetheless, they do build, and
   474         #            the result is useable (maybe the dual-pass core gcc is
   475         #            responsible for this).
   476         GLIBC_INITIAL_BUILD_RULE=lib
   477         GLIBC_INITIAL_INSTALL_RULE="install-lib-all install-headers"
   478         GLIBC_INSTALL_APPS_LATER=yes
   479     else
   480         # classic glibc.  
   481         # We can build and install everything with the bootstrap compiler.
   482         # YEM-FIXME: See the above FIXME as well.
   483         GLIBC_INITIAL_BUILD_RULE=all
   484         GLIBC_INITIAL_INSTALL_RULE=install
   485         GLIBC_INSTALL_APPS_LATER=no
   486     fi
   487 
   488     # glibc initial build hacks
   489     # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
   490     case "${CT_ARCH},${CT_ARCH_CPU}" in
   491 	powerpc,8??)
   492 	    CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
   493 	    GLIBC_INITIAL_BUILD_ASFLAGS="-DBROKEN_PPC_8xx_CPU15";;
   494     esac
   495 
   496     # If this fails with an error like this:
   497     # ...  linux/autoconf.h: No such file or directory 
   498     # then you need to set the KERNELCONFIG variable to point to a .config file for this arch.
   499     # The following architectures are known to need kernel .config: alpha, arm, ia64, s390, sh, sparc
   500     # Note: LD and RANLIB needed by glibc-2.1.3's c_stub directory, at least on macosx
   501     CT_DoLog EXTRA "Building C library"
   502     CT_DoExecLog ALL make LD=${CT_TARGET}-ld                        \
   503                           RANLIB=${CT_TARGET}-ranlib                \
   504                           OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"   \
   505                           ASFLAGS="${GLIBC_INITIAL_BUILD_ASFLAGS}"  \
   506                           PARALLELMFLAGS="${PARALLELMFLAGS}"        \
   507                           ${GLIBC_INITIAL_BUILD_RULE}
   508 
   509     CT_DoLog EXTRA "Installing C library"
   510     CT_DoExecLog ALL make install_root="${CT_SYSROOT_DIR}"          \
   511                           ${LIBC_SYSROOT_ARG}                       \
   512                           OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"   \
   513                           PARALLELMFLAGS="${PARALLELMFLAGS}"        \
   514                           ${GLIBC_INITIAL_INSTALL_RULE}
   515 
   516     # This doesn't seem to work when building a crosscompiler,
   517     # as it tries to execute localedef using the just-built ld.so!?
   518     #CT_DoLog EXTRA "Installing locales"
   519     #make localedata/install-locales install_root=${SYSROOT} 2>&1 |CT_DoLog ALL
   520 
   521     # Fix problems in linker scripts.
   522     #
   523     # Remove lines containing BUG per http://sources.redhat.com/ml/bug-glibc/2003-05/msg00055.html,
   524     # needed to fix gcc-3.2.3/glibc-2.3.2 targeting arm
   525     # No need to look into the lib64/ dirs here and there, they point to the
   526     # corresponding lib/ directories.
   527     #
   528     # To make "strip *.so.*" not fail (ptxdist does this), rename to .so_orig rather than .so.orig
   529     CT_DoLog EXTRA "Fixing C library linker scripts"
   530     for file in libc.so libpthread.so libgcc_s.so; do
   531         for dir in lib usr/lib; do
   532             if [ -f "${CT_SYSROOT_DIR}/${dir}/${file}" -a ! -L ${CT_SYSROOT_DIR}/$lib/$file ]; then
   533                 CT_DoExecLog ALL cp -v "${CT_SYSROOT_DIR}/${dir}/${file}" "${CT_SYSROOT_DIR}/${dir}/${file}_orig"
   534                 CT_DoLog DEBUG "Fixing '${CT_SYS_ROOT_DIR}/${dir}/${file}'"
   535                 CT_DoExecLog ALL sed -i -r -e '/BUG in libc.scripts.output-format.sed/d' "${CT_SYSROOT_DIR}/${dir}/${file}"
   536             fi
   537         done
   538     done
   539 
   540     CT_EndStep
   541 }
   542 
   543 # This function finishes the glibc install
   544 do_libc_finish() {
   545     # Finally, build and install glibc programs, now that libeh (if any) is installed
   546     # Don't do this unless needed, 'cause it causes glibc-2.{1.3,2.2} to fail here with
   547     # .../gcc-3.4.1-glibc-2.1.3/build-glibc/libc.so.6: undefined reference to `__deregister_frame_info'
   548     # .../gcc-3.4.1-glibc-2.1.3/build-glibc/libc.so.6: undefined reference to `__register_frame_info'
   549     [ "${GLIBC_INSTALL_APPS_LATER}" = "yes" ] || return 0
   550 
   551     CT_DoStep INFO "Finishing C library"
   552 
   553     cd "${CT_BUILD_DIR}/build-libc"
   554 
   555     CT_DoLog EXTRA "Re-building C library"
   556     CT_DoExecLog ALL make LD=${CT_TARGET}-ld                        \
   557                           RANLIB=${CT_TARGET}-ranlib                \
   558                           OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"   \
   559                           ASFLAGS="${GLIBC_INITIAL_BUILD_ASFLAGS}"  \
   560                           PARALLELMFLAGS="${PARALLELMFLAGS}"
   561 
   562     CT_DoLog EXTRA "Installing missing C library components"
   563     # note: should do full install and then fix linker scripts, but this is faster
   564     for t in bin rootsbin sbin data others; do
   565         CT_DoExecLog ALL make install_root="${CT_SYSROOT_DIR}"          \
   566                               ${LIBC_SYSROOT_ARG}                       \
   567                               OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"   \
   568                               PARALLELMFLAGS="${PARALLELMFLAGS}"        \
   569                               install-${t}
   570     done
   571 
   572     CT_EndStep
   573 }
   574 
   575 # Build up the addons list, separated with $1
   576 do_libc_add_ons_list() {
   577     local sep="$1"
   578     local addons_list=$(echo "${CT_LIBC_ADDONS_LIST}" |sed -r -e "s/[ ,]/${sep}/g;")
   579     case "${CT_THREADS}" in
   580         none)   ;;
   581         *)      addons_list="${addons_list}${sep}${CT_THREADS}";;
   582     esac
   583     [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
   584     # Remove duplicate, leading and trailing separators
   585     echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
   586 }
   587 
   588 # Builds up the minimum supported Linux kernel version
   589 do_libc_min_kernel_config() {
   590     local min_kernel_config=
   591     case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
   592         *enable-kernel*) ;;
   593         *)  if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
   594                 # We can't rely on the kernel version from the configuration,
   595                 # because it might not be available if the user uses pre-installed
   596                 # headers. On the other hand, both method will have the kernel
   597                 # version installed in "usr/include/linux/version.h" in the sys-root.
   598                 # Parse that instead of having two code-paths.
   599                 version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
   600                 CT_TestOrAbort "Linux version is unavailable in installed headers files" -f "${version_code_file}" -a -r "${version_code_file}"
   601                 version_code=$(grep -E LINUX_VERSION_CODE "${version_code_file}" |cut -d ' ' -f 3)
   602                 version=$(((version_code>>16)&0xFF))
   603                 patchlevel=$(((version_code>>8)&0xFF))
   604                 sublevel=$((version_code&0xFF))
   605                 min_kernel_config="--enable-kernel=${version}.${patchlevel}.${sublevel}"
   606             elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
   607                 # Trim the fourth part of the linux version, keeping only the first three numbers
   608                 min_kernel_config="--enable-kernel=$(echo ${CT_LIBC_GLIBC_MIN_KERNEL_VERSION} |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;')"
   609             fi
   610             ;;
   611     esac
   612     echo "${min_kernel_config}"
   613 }