scripts/build/libc/glibc.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Mon Oct 13 11:23:51 2008 +0000 (2008-10-13)
changeset 922 3f0456891349
parent 884 35302e8a3483
child 950 82209e5c862a
permissions -rw-r--r--
Generate the choice menu for C libraries, the same way arch and kernels are generated.

/trunk/kconfig/kconfig.mk | 10 8 2 0 ++++++--
/trunk/scripts/build/libc/glibc.sh | 2 1 1 0 +-
/trunk/config/libc/glibc.in | 22 6 16 0 +++++-------------
/trunk/config/libc/uClibc.in | 7 6 1 0 +++++-
/trunk/config/libc/eglibc.in | 12 11 1 0 +++++++++-
/trunk/config/libc.in | 53 4 49 0 +++-----------------------------------------
6 files changed, 36 insertions(+), 70 deletions(-)
     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 do_print_filename() {
     6     [ "${CT_LIBC}" = "glibc" ] || return 0
     7     echo "glibc-${CT_LIBC_VERSION}"
     8     for addon in $(do_libc_add_ons_list " "); do
     9         # NPTL addon is not to be downloaded, in any case
    10         [ "${addon}" = "nptl" ] && continue || true
    11         echo "glibc-${addon}-${CT_LIBC_VERSION}"
    12     done
    13 }
    14 
    15 # Download glibc
    16 do_libc_get() {
    17     # Ah! Not all GNU folks seem stupid. All glibc releases are in the same
    18     # directory. Good. Alas, there is no snapshot there. I'll deal with them
    19     # later on... :-/
    20     CT_GetFile "${CT_LIBC_FILE}"                        \
    21                {ftp,http}://ftp.gnu.org/gnu/glibc       \
    22                ftp://gcc.gnu.org/pub/glibc/releases     \
    23                ftp://gcc.gnu.org/pub/glibc/snapshots
    24 
    25     # C library addons
    26     for addon in $(do_libc_add_ons_list " "); do
    27         # NPTL addon is not to be downloaded, in any case
    28         [ "${addon}" = "nptl" ] && continue || true
    29         CT_GetFile "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" \
    30                    {ftp,http}://ftp.gnu.org/gnu/glibc       \
    31                    ftp://gcc.gnu.org/pub/glibc/releases     \
    32                    ftp://gcc.gnu.org/pub/glibc/snapshots
    33     done
    34 
    35     return 0
    36 }
    37 
    38 # Extract glibc
    39 do_libc_extract() {
    40     CT_ExtractAndPatch "${CT_LIBC_FILE}"
    41 
    42     # C library addons
    43     for addon in $(do_libc_add_ons_list " "); do
    44         # NPTL addon is not to be extracted, in any case
    45         [ "${addon}" = "nptl" ] && continue || true
    46         CT_ExtractAndPatch "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
    47     done
    48 
    49     # The configure files may be older than the configure.in files
    50     # if using a snapshot (or even some tarballs). Fake them being
    51     # up to date.
    52     find "${CT_SRC_DIR}/${CT_LIBC_FILE}" -type f -name configure -exec touch {} \; 2>&1 |CT_DoLog ALL
    53 
    54     return 0
    55 }
    56 
    57 # There is nothing to do for glibc check config
    58 do_libc_check_config() {
    59     :
    60 }
    61 
    62 # This function installs the glibc headers needed to build the core compiler
    63 do_libc_headers() {
    64     # Only need to install bootstrap glibc headers for gcc-3.0 and above?  Or maybe just gcc-3.3 and above?
    65     # See also http://gcc.gnu.org/PR8180, which complains about the need for this step.
    66     grep -q 'gcc-[34]' "${CT_SRC_DIR}/${CT_CC_FILE}/ChangeLog" 2>/dev/null || return 0
    67 
    68     CT_DoStep INFO "Installing C library headers"
    69 
    70     mkdir -p "${CT_BUILD_DIR}/build-libc-headers"
    71     cd "${CT_BUILD_DIR}/build-libc-headers"
    72 
    73     CT_DoLog EXTRA "Configuring C library"
    74 
    75     # The following three things have to be done to build glibc-2.3.x, but they don't hurt older versions.
    76     # 1. override CC to keep glibc's configure from using $TARGET-gcc. 
    77     # 2. disable linuxthreads, which needs a real cross-compiler to generate tcb-offsets.h properly
    78     # 3. build with gcc 3.2 or later
    79     # Compare these options with the ones used when building glibc for real below - they're different.
    80     # As of glibc-2.3.2, to get this step to work for hppa-linux, you need --enable-hacker-mode
    81     # so when configure checks to make sure gcc has access to the assembler you just built...
    82     # Alternately, we could put ${PREFIX}/${TARGET}/bin on the path.
    83     # Set --build so maybe we don't have to specify "cross-compiling=yes" below (haven't tried yet)
    84     # Note: the warning
    85     # "*** WARNING: Are you sure you do not want to use the `linuxthreads'"
    86     # *** add-on?"
    87     # is ok here, since all we want are the basic headers at this point.
    88     # Override libc_cv_ppc_machine so glibc-cvs doesn't complain
    89     # 'a version of binutils that supports .machine "altivec" is needed'.
    90 
    91     addons_config="--enable-add-ons=$(do_libc_add_ons_list ,)"
    92     # We need to remove any threading addon when installing headers
    93     addons_config="${addons_config//nptl/}"
    94     addons_config="${addons_config//linuxthreads/}"
    95     addons_config=$(echo "${addons_config}" |sed -r -e 's/^,+//; s/,+$//; s/,+/,/g;')
    96 
    97     extra_config="${addons_config}"
    98     min_kernel_config=
    99     case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
   100         *enable-kernel*) ;;
   101         *)  if [    "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" \
   102                  -o "${CT_LIBC_GLIBC_USE_HEADERS_MIN_KERNEL}" = "y"    ]; then
   103                 min_kernel_config="--enable-kernel=$(echo ${CT_LIBC_GLIBC_MIN_KERNEL} |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;')"
   104             fi
   105             ;;
   106     esac
   107     extra_config="${extra_config} ${min_kernel_config}"
   108 
   109     cross_cc=$(CT_Which "${CT_TARGET}-gcc")
   110     CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
   111     CT_DoLog DEBUG "Extra config passed : '${extra_config}'"
   112 
   113     libc_cv_ppc_machine=yes                     \
   114     CC=${cross_cc}                              \
   115     CT_DoExecLog ALL                            \
   116     "${CT_SRC_DIR}/${CT_LIBC_FILE}/configure"   \
   117         --build="${CT_UNIQ_BUILD}"              \
   118         --host="${CT_TARGET}"                   \
   119         --prefix=/usr                           \
   120         --with-headers="${CT_HEADERS_DIR}"      \
   121         --without-cvs                           \
   122         --disable-sanity-checks                 \
   123         --enable-hacker-mode                    \
   124         ${extra_config}                         \
   125         --without-nptl
   126 
   127     CT_DoLog EXTRA "Installing C library headers"
   128 
   129     if grep -q GLIBC_2.3 "${CT_SRC_DIR}/${CT_LIBC_FILE}/ChangeLog"; then
   130         # glibc-2.3.x passes cross options to $(CC) when generating errlist-compat.c,
   131         # which fails without a real cross-compiler.
   132         # Fortunately, we don't need errlist-compat.c, since we just need .h
   133         # files, so work around this by creating a fake errlist-compat.c and
   134         # satisfying its dependencies.
   135         # Another workaround might be to tell configure to not use any cross
   136         # options to $(CC).
   137         # The real fix would be to get install-headers to not generate
   138         # errlist-compat.c.
   139         # Note: BOOTSTRAP_GCC is used by:
   140         # patches/glibc-2.3.5/glibc-mips-bootstrap-gcc-header-install.patch
   141 
   142         libc_cv_ppc_machine=yes                         \
   143         CT_DoExecLog ALL                                \
   144         make CFLAGS="-O -DBOOTSTRAP_GCC"                \
   145              OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"    \
   146              sysdeps/gnu/errlist.c
   147         mkdir -p stdio-common
   148 
   149         # sleep for 2 seconds for benefit of filesystems with lousy time
   150         # resolution, like FAT, so make knows for sure errlist-compat.c doesn't
   151         # need generating
   152         sleep 2
   153         CT_DoExecLog ALL touch stdio-common/errlist-compat.c
   154     fi
   155     # Note: BOOTSTRAP_GCC (see above)
   156     libc_cv_ppc_machine=yes                         \
   157     CT_DoExecLog ALL                                \
   158     make cross-compiling=yes                        \
   159          install_root=${CT_SYSROOT_DIR}             \
   160          CFLAGS="-O -DBOOTSTRAP_GCC"                \
   161          ${LIBC_SYSROOT_ARG}                        \
   162          OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"    \
   163          install-headers
   164 
   165     # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
   166     # so do them by hand.  We can tolerate an empty stubs.h for the moment.
   167     # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
   168     mkdir -p "${CT_HEADERS_DIR}/gnu"
   169     CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
   170     CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/${CT_LIBC_FILE}/include/features.h"  \
   171                            "${CT_HEADERS_DIR}/features.h"
   172 
   173     # Building the bootstrap gcc requires either setting inhibit_libc, or
   174     # having a copy of stdio_lim.h... see
   175     # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
   176     CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
   177 
   178     # Following error building gcc-4.0.0's gcj:
   179     #  error: bits/syscall.h: No such file or directory
   180     # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
   181     # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
   182     [ "${CT_ARCH}" != "arm" ] && CT_DoExecLog ALL cp -v misc/syscall-list.h "${CT_HEADERS_DIR}/bits/syscall.h" || true
   183 
   184     # Those headers are to be manually copied so gcc can build properly
   185     pthread_h="${CT_SRC_DIR}/${CT_LIBC_FILE}/${CT_THREADS}/sysdeps/pthread/pthread.h"
   186     pthreadtypes_h=
   187     case "${CT_THREADS}" in
   188         nptl)
   189             # NOTE: for some archs, the pathes are different, but they are not
   190             # supported by crosstool-NG right now. See original crosstool when they are.
   191             pthread_h="${CT_SRC_DIR}/${CT_LIBC_FILE}/${CT_THREADS}/sysdeps/pthread/pthread.h"
   192             pthreadtypes_h="${CT_SRC_DIR}/${CT_LIBC_FILE}/nptl/sysdeps/unix/sysv/linux/${CT_KERNEL_ARCH}/bits/pthreadtypes.h"
   193             if [ ! -f "${pthreadtypes_h}" ]; then
   194                 pthreadtypes_h="${CT_SRC_DIR}/${CT_LIBC_FILE}/${CT_LIBC}-ports-${CT_LIBC_VERSION}/sysdeps/unix/sysv/linux/${CT_KERNEL_ARCH}/nptl/bits/pthreadtypes.h"
   195             fi
   196             ;;
   197         linuxthreads)
   198             pthreadtypes_h="${CT_SRC_DIR}/${CT_LIBC_FILE}/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h"
   199             ;;
   200         *)
   201             pthread_h=
   202             pthreadtypes_h=
   203             ;;
   204     esac
   205     if [ -n "${pthread_h}" ]; then
   206         CT_DoExecLog ALL cp -v "${pthread_h}" "${CT_HEADERS_DIR}/pthread.h"
   207     fi
   208     if [ -n "${pthreadtypes_h}" ]; then
   209         CT_DoExecLog ALL cp -v "${pthreadtypes_h}" "${CT_HEADERS_DIR}/bits/pthreadtypes.h"
   210     fi
   211 
   212     CT_EndStep
   213 }
   214 
   215 # Build and install start files
   216 do_libc_start_files() {
   217     # Needed only in the NPTL case. Otherwise, return.
   218     [ "${CT_THREADS}" = "nptl" ] || return 0
   219 
   220     CT_DoStep INFO "Installing C library start files"
   221 
   222     mkdir -p "${CT_BUILD_DIR}/build-libc-startfiles"
   223     cd "${CT_BUILD_DIR}/build-libc-startfiles"
   224 
   225     CT_DoLog EXTRA "Configuring C library"
   226 
   227     # Add some default glibc config options if not given by user.
   228     extra_config=
   229     min_kernel_config=
   230     case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
   231         *enable-kernel*) ;;
   232         *)  if [    "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" \
   233                  -o "${CT_LIBC_GLIBC_USE_HEADERS_MIN_KERNEL}" = "y"    ]; then
   234                 min_kernel_config="--enable-kernel=$(echo ${CT_LIBC_GLIBC_MIN_KERNEL} |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;')"
   235             fi
   236             ;;
   237     esac
   238     extra_config="${extra_config} ${min_kernel_config}"
   239     case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
   240         *-tls*) ;;
   241         *) extra_config="${extra_config} --with-tls"
   242     esac
   243     case "${CT_SHARED_LIBS}" in
   244         y) extra_config="${extra_config} --enable-shared";;
   245         *) extra_config="${extra_config} --disable-shared";;
   246     esac
   247     case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
   248         y,) extra_config="${extra_config} --with-fp";;
   249         ,y) extra_config="${extra_config} --without-fp";;
   250     esac
   251     # Obviously, we want threads, as we come here only for NPTL
   252     extra_config="${extra_config} --with-__thread"
   253 
   254     addons_config="--enable-add-ons=$(do_libc_add_ons_list ,)"
   255     extra_config="${extra_config} ${addons_config}"
   256 
   257     # Add some default CC args
   258     glibc_version_major=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^([^\.]+)\..*/\1/')
   259     glibc_version_minor=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^[^\.]+\.([^.]+).*/\1/')
   260     # In case we're using a snapshot, fake a >=2.6 version.
   261     if [    "${CT_LIBC_V_LATEST}" = "y" \
   262          -o "${CT_LIBC_V_date}" = "y"   ]; then
   263         glibc_version_major=3
   264         glibc_version_minor=0
   265     fi
   266     if [    ${glibc_version_major} -eq 2 -a ${glibc_version_minor} -ge 6    \
   267          -o ${glibc_version_major} -gt 2                                    ]; then
   268         # Don't use -pipe: configure chokes on it for glibc >= 2.6.
   269         CT_Test 'Removing "-pipe" for use with glibc>=2.6' "${CT_USE_PIPES}" = "y"
   270         extra_cc_args="${CT_CFLAGS_FOR_HOST/-pipe}"
   271     else
   272         extra_cc_args="${CT_CFLAGS_FOR_HOST}"
   273     fi
   274     extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
   275 
   276     cross_cc=$(CT_Which "${CT_TARGET}-gcc")
   277     CT_DoLog DEBUG "Using gcc for target    : '${cross_cc}'"
   278     CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
   279     CT_DoLog DEBUG "Extra config args passed: '${extra_config}'"
   280     CT_DoLog DEBUG "Extra CC args passed    : '${extra_cc_args}'"
   281 
   282     # Super-H really needs to set configparms as of gcc-3.4/glibc-2.3.2
   283     # note: this is awkward, doesn't work well if you need more than one
   284     # line in configparms
   285     [ "${CT_ARCH_sh}" = "y" ] && echo "no-z-defs=yes" > configparms
   286 
   287     echo "libc_cv_forced_unwind=yes" > config.cache
   288     echo "libc_cv_c_cleanup=yes" >> config.cache
   289 
   290     # Please see the comment for the configure step in do_libc().
   291 
   292     BUILD_CC=${CT_CC_NATIVE}                                        \
   293     CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} -O "  \
   294     CC="${cross_cc} ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}"      \
   295     AR=${CT_TARGET}-ar                                              \
   296     RANLIB=${CT_TARGET}-ranlib                                      \
   297     CT_DoExecLog ALL                                                \
   298     "${CT_SRC_DIR}/${CT_LIBC_FILE}/configure"                       \
   299         --prefix=/usr                                               \
   300         --build="${CT_UNIQ_BUILD}"                                  \
   301         --host=${CT_TARGET}                                         \
   302         --without-cvs                                               \
   303         --disable-profile                                           \
   304         --disable-debug                                             \
   305         --without-gd                                                \
   306         --with-headers="${CT_HEADERS_DIR}"                          \
   307         --cache-file=config.cache                                   \
   308         ${extra_config}                                             \
   309         ${CT_LIBC_GLIBC_EXTRA_CONFIG}
   310 
   311 
   312     #TODO: should check whether slibdir has been set in configparms to */lib64
   313     #      and copy the startfiles into the appropriate libdir.
   314     CT_DoLog EXTRA "Building C library start files"
   315     CT_DoExecLog ALL make OBJDUMP_FOR_HOST="${CT_TARGET}-objdump" csu/subdir_lib
   316 
   317     CT_DoLog EXTRA "Installing C library start files"
   318     if [ "${CT_USE_SYSROOT}" = "y" ]; then
   319         CT_DoExecLog ALL cp -fpv csu/crt[1in].o "${CT_SYSROOT_DIR}/usr/lib/"
   320     else
   321         CT_DoExecLog ALL cp -fpv csu/crt[1in].o "${CT_SYSROOT_DIR}/lib/"
   322     fi
   323 
   324     CT_EndStep
   325 }
   326 
   327 # This function builds and install the full glibc
   328 do_libc() {
   329     CT_DoStep INFO "Installing C library"
   330 
   331     mkdir -p "${CT_BUILD_DIR}/build-libc"
   332     cd "${CT_BUILD_DIR}/build-libc"
   333 
   334     CT_DoLog EXTRA "Configuring C library"
   335 
   336     # Add some default glibc config options if not given by user.
   337     # We don't need to be conditional on wether the user did set different
   338     # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
   339 
   340     extra_config=
   341     min_kernel_config=""
   342     case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
   343         *enable-kernel*) ;;
   344         *)  if [    "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" \
   345                  -o "${CT_LIBC_GLIBC_USE_HEADERS_MIN_KERNEL}" = "y"    ]; then
   346                 min_kernel_config="--enable-kernel=$(echo ${CT_LIBC_GLIBC_MIN_KERNEL} |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;')"
   347             fi
   348             ;;
   349     esac
   350     extra_config="${extra_config} ${min_kernel_config}"
   351 
   352     case "${CT_THREADS}" in
   353         nptl)           extra_config="${extra_config} --with-__thread --with-tls";;
   354         linuxthreads)   extra_config="${extra_config} --with-__thread --without-tls --without-nptl";;
   355         none)           extra_config="${extra_config} --without-__thread --without-nptl"
   356                         case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
   357                             *-tls*) ;;
   358                             *) extra_config="${extra_config} --without-tls";;
   359                         esac
   360                         ;;
   361     esac
   362 
   363     case "${CT_SHARED_LIBS}" in
   364         y) extra_config="${extra_config} --enable-shared";;
   365         *) extra_config="${extra_config} --disable-shared";;
   366     esac
   367 
   368     case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
   369         y,) extra_config="${extra_config} --with-fp";;
   370         ,y) extra_config="${extra_config} --without-fp";;
   371     esac
   372 
   373     case "$(do_libc_add_ons_list ,)" in
   374         "") ;;
   375         *)  extra_config="${extra_config} --enable-add-ons=$(do_libc_add_ons_list ,)";;
   376     esac
   377 
   378     # Add some default CC args
   379     glibc_version_major=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^([^\.]+)\..*/\1/')
   380     glibc_version_minor=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^[^\.]+\.([^.]+).*/\1/')
   381     # In case we're using a snapshot, fake a >=2.6 version.
   382     if [    "${CT_LIBC_V_LATEST}" = "y" \
   383          -o "${CT_LIBC_V_date}" = "y"   ]; then
   384         glibc_version_major=3
   385         glibc_version_minor=0
   386     fi
   387     if [    ${glibc_version_major} -eq 2 -a ${glibc_version_minor} -ge 6    \
   388          -o ${glibc_version_major} -gt 2                                    ]; then
   389         # Don't use -pipe: configure chokes on it for glibc >= 2.6.
   390         CT_Test 'Removing "-pipe" for use with glibc>=2.6' "${CT_USE_PIPES}" = "y"
   391         extra_cc_args="${CT_CFLAGS_FOR_HOST/-pipe}"
   392     else
   393         extra_cc_args="${CT_CFLAGS_FOR_HOST}"
   394     fi
   395     extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
   396 
   397     cross_cc=$(CT_Which "${CT_TARGET}-gcc")
   398     CT_DoLog DEBUG "Using gcc for target    : '${cross_cc}'"
   399     CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
   400     CT_DoLog DEBUG "Extra config args passed: '${extra_config}'"
   401     CT_DoLog DEBUG "Extra CC args passed    : '${extra_cc_args}'"
   402 
   403     # sh3 and sh4 really need to set configparms as of gcc-3.4/glibc-2.3.2
   404     # note: this is awkward, doesn't work well if you need more than one line in configparms
   405     echo ${CT_LIBC_GLIBC_CONFIGPARMS} > configparms
   406 
   407     # For glibc 2.3.4 and later we need to set some autoconf cache
   408     # variables, because nptl/sysdeps/pthread/configure.in does not
   409     # work when cross-compiling.
   410     if [ "${CT_THREADS}" = "nptl" ]; then
   411         echo libc_cv_forced_unwind=yes
   412         echo libc_cv_c_cleanup=yes
   413     fi >config.cache
   414 
   415     # Configure with --prefix the way we want it on the target...
   416     # There are a whole lot of settings here.  You'll probably want
   417     # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG
   418     # Compare these options with the ones used when installing the glibc headers above - they're different.
   419     # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory" 
   420     # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html. 
   421     # Set BUILD_CC, or you won't be able to build datafiles
   422     # Set --build, else glibc-2.3.2 will think you're not cross-compiling, and try to run the test programs
   423 
   424     # OK. I'm fed up with those folks telling me what I should do.
   425     # I don't configure nptl? Well, maybe that's purposedly because
   426     # I don't want nptl! --disable-sanity-checks will shut up those
   427     # silly messages. GNU folks again, he?
   428 
   429     BUILD_CC=${CT_CC_NATIVE}                                        \
   430     CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} -O"   \
   431     CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
   432     AR=${CT_TARGET}-ar                                              \
   433     RANLIB=${CT_TARGET}-ranlib                                      \
   434     CT_DoExecLog ALL                                                \
   435     "${CT_SRC_DIR}/${CT_LIBC_FILE}/configure"                       \
   436         --prefix=/usr                                               \
   437         --build=${CT_UNIQ_BUILD}                                    \
   438         --host=${CT_TARGET}                                         \
   439         --without-cvs                                               \
   440         --disable-profile                                           \
   441         --disable-debug                                             \
   442         --without-gd                                                \
   443         --disable-sanity-checks                                     \
   444         --cache-file=config.cache                                   \
   445         --with-headers="${CT_HEADERS_DIR}"                          \
   446         ${extra_config}                                             \
   447         ${CT_LIBC_GLIBC_EXTRA_CONFIG}
   448 
   449     if grep -l '^install-lib-all:' "${CT_SRC_DIR}/${CT_LIBC_FILE}/Makerules" > /dev/null; then
   450         # nptl-era glibc.
   451         # If the install-lib-all target (which is added by our make-install-lib-all.patch)
   452         # is present, it means we're building glibc-2.3.3 or later, and we can't
   453         # build programs yet, as they require libeh, which won't be installed
   454         # until full build of gcc
   455         # YEM-FIXME: This comment is misleading: latest glibc-s do not have the
   456         #            make-install-lib-all.patch applied, so do not pass through this
   457         #            part of the if statement; nonetheless, they do build, and
   458         #            the result is useable (maybe the dual-pass core gcc is
   459         #            responsible for this).
   460         GLIBC_INITIAL_BUILD_RULE=lib
   461         GLIBC_INITIAL_INSTALL_RULE="install-lib-all install-headers"
   462         GLIBC_INSTALL_APPS_LATER=yes
   463     else
   464         # classic glibc.  
   465         # We can build and install everything with the bootstrap compiler.
   466         # YEM-FIXME: See the above FIXME as well.
   467         GLIBC_INITIAL_BUILD_RULE=all
   468         GLIBC_INITIAL_INSTALL_RULE=install
   469         GLIBC_INSTALL_APPS_LATER=no
   470     fi
   471 
   472     # If this fails with an error like this:
   473     # ...  linux/autoconf.h: No such file or directory 
   474     # then you need to set the KERNELCONFIG variable to point to a .config file for this arch.
   475     # The following architectures are known to need kernel .config: alpha, arm, ia64, s390, sh, sparc
   476     # Note: LD and RANLIB needed by glibc-2.1.3's c_stub directory, at least on macosx
   477     # No need for PARALLELMFLAGS here, Makefile already reads this environment variable
   478     CT_DoLog EXTRA "Building C library"
   479     CT_DoExecLog ALL make LD=${CT_TARGET}-ld                        \
   480                            RANLIB=${CT_TARGET}-ranlib               \
   481                            OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"  \
   482                            ${GLIBC_INITIAL_BUILD_RULE}
   483 
   484     CT_DoLog EXTRA "Installing C library"
   485     CT_DoExecLog ALL make install_root="${CT_SYSROOT_DIR}"          \
   486                           ${LIBC_SYSROOT_ARG}                       \
   487                           OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"   \
   488                           ${GLIBC_INITIAL_INSTALL_RULE}
   489 
   490     # This doesn't seem to work when building a crosscompiler,
   491     # as it tries to execute localedef using the just-built ld.so!?
   492     #CT_DoLog EXTRA "Installing locales"
   493     #make localedata/install-locales install_root=${SYSROOT} 2>&1 |CT_DoLog ALL
   494 
   495     # Fix problems in linker scripts.
   496     #
   497     # Remove lines containing BUG per http://sources.redhat.com/ml/bug-glibc/2003-05/msg00055.html,
   498     # needed to fix gcc-3.2.3/glibc-2.3.2 targeting arm
   499     #
   500     # To make "strip *.so.*" not fail (ptxdist does this), rename to .so_orig rather than .so.orig
   501     CT_DoLog EXTRA "Fixing C library linker scripts"
   502     for file in libc.so libpthread.so libgcc_s.so; do
   503         for dir in lib lib64 usr/lib usr/lib64; do
   504             if [ -f "${CT_SYSROOT_DIR}/${dir}/${file}" -a ! -L ${CT_SYSROOT_DIR}/$lib/$file ]; then
   505                 CT_DoExecLog ALL cp -v "${CT_SYSROOT_DIR}/${dir}/${file}" "${CT_SYSROOT_DIR}/${dir}/${file}_orig"
   506                 CT_DoLog DEBUG "Fixing '${CT_SYS_ROOT_DIR}/${dir}/${file}'"
   507                 CT_DoExecLog ALL sed -i -r -e '/BUG in libc.scripts.output-format.sed/d' "${CT_SYSROOT_DIR}/${dir}/${file}"
   508             fi
   509         done
   510     done
   511 
   512     CT_EndStep
   513 }
   514 
   515 # This function finishes the glibc install
   516 do_libc_finish() {
   517     # Finally, build and install glibc programs, now that libeh (if any) is installed
   518     # Don't do this unless needed, 'cause it causes glibc-2.{1.3,2.2} to fail here with
   519     # .../gcc-3.4.1-glibc-2.1.3/build-glibc/libc.so.6: undefined reference to `__deregister_frame_info'
   520     # .../gcc-3.4.1-glibc-2.1.3/build-glibc/libc.so.6: undefined reference to `__register_frame_info'
   521     [ "${GLIBC_INSTALL_APPS_LATER}" = "yes" ] || return 0
   522 
   523     CT_DoStep INFO "Finishing C library"
   524 
   525     cd "${CT_BUILD_DIR}/build-libc"
   526 
   527     CT_DoLog EXTRA "Re-building C library"
   528     CT_DoExecLog ALL make LD=${CT_TARGET}-ld RANLIB=${CT_TARGET}-ranlib
   529 
   530     CT_DoLog EXTRA "Installing missing C library components"
   531     # note: should do full install and then fix linker scripts, but this is faster
   532     for t in bin rootsbin sbin data others; do
   533         CT_DoExecLog ALL make install_root="${CT_SYSROOT_DIR}"          \
   534                               ${LIBC_SYSROOT_ARG}                       \
   535                               OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"   \
   536                               install-${t}
   537     done
   538 
   539     CT_EndStep
   540 }
   541 
   542 # Build up the addons list, separated with $1
   543 do_libc_add_ons_list() {
   544     local sep="$1"
   545     local addons_list=$(echo "${CT_LIBC_ADDONS_LIST//,/${sep}}" |tr -s ,)
   546     case "${CT_THREADS}" in
   547         none)   ;;
   548         *)      addons_list="${addons_list}${sep}${CT_THREADS}";;
   549     esac
   550     [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
   551     addons_list="${addons_list%%${sep}}"
   552     echo "${addons_list##${sep}}"
   553 }
   554