scripts/build/cc/gcc.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Nov 20 21:05:36 2011 +0100 (2011-11-20)
changeset 2775 c9980930fc8e
parent 2676 af542a04bf69
child 2780 03ab39f149b4
permissions -rw-r--r--
arch/sh: use endian string in tests

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
     1 # This file adds the function to build the gcc C compiler
     2 # Copyright 2007 Yann E. MORIN
     3 # Licensed under the GPL v2. See COPYING in the root of this package
     4 
     5 # Download gcc
     6 do_cc_get() {
     7     local linaro_version
     8     local linaro_series
     9     local linaro_base_url="http://launchpad.net/gcc-linaro"
    10 
    11 
    12     # Account for the Linaro versioning
    13     linaro_version="$( echo "${CT_CC_VERSION}"      \
    14                        |sed -r -e 's/^linaro-//;'   \
    15                      )"
    16     linaro_series="$( echo "${linaro_version}"      \
    17                       |sed -r -e 's/-.*//;'         \
    18                     )"
    19 
    20     # Ah! gcc folks are kind of 'different': they store the tarballs in
    21     # subdirectories of the same name! That's because gcc is such /crap/ that
    22     # it is such /big/ that it needs being splitted for distribution! Sad. :-(
    23     # Arrgghh! Some of those versions does not follow this convention:
    24     # gcc-3.3.3 lives in releases/gcc-3.3.3, while gcc-2.95.* isn't in a
    25     # subdirectory! You bastard!
    26     CT_GetFile "gcc-${CT_CC_VERSION}"                                                       \
    27                {ftp,http}://ftp.gnu.org/gnu/gcc{,{,/releases}/gcc-${CT_CC_VERSION}}         \
    28                ftp://ftp.irisa.fr/pub/mirrors/gcc.gnu.org/gcc/releases/gcc-${CT_CC_VERSION} \
    29                ftp://ftp.uvsq.fr/pub/gcc/snapshots/${CT_CC_VERSION}                         \
    30                "${linaro_base_url}/${linaro_series}/${linaro_version}/+download"
    31 
    32     # Starting with GCC 4.3, ecj is used for Java, and will only be
    33     # built if the configure script finds ecj.jar at the top of the
    34     # GCC source tree, which will not be there unless we get it and
    35     # put it there ourselves
    36     if [ "${CT_CC_LANG_JAVA_USE_ECJ}" = "y" ]; then
    37         CT_GetFile ecj-latest .jar ftp://gcc.gnu.org/pub/java   \
    38                                    ftp://sourceware.org/pub/java
    39     fi
    40 }
    41 
    42 # Extract gcc
    43 do_cc_extract() {
    44     CT_Extract "gcc-${CT_CC_VERSION}"
    45     CT_Patch "gcc" "${CT_CC_VERSION}"
    46 
    47     # Copy ecj-latest.jar to ecj.jar at the top of the GCC source tree
    48     if [ "${CT_CC_LANG_JAVA_USE_ECJ}" = "y"                     \
    49          -a ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/ecj.jar"   \
    50        ]; then
    51         CT_DoExecLog ALL cp -v "${CT_TARBALLS_DIR}/ecj-latest.jar" "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/ecj.jar"
    52     fi
    53 }
    54 
    55 #------------------------------------------------------------------------------
    56 # Core gcc pass 1
    57 do_cc_core_pass_1() {
    58     # If we're building for bare metal, build the static core gcc,
    59     # with libgcc.
    60     # In case we're not bare metal and building a canadian compiler, do nothing
    61     # In case we're not bare metal, and we're NPTL, build the static core gcc.
    62     # In any other case, do nothing.
    63     case "${CT_BARE_METAL},${CT_CANADIAN},${CT_THREADS}" in
    64         y,*,*)  do_cc_core mode=static;;
    65         ,y,*)   ;;
    66         ,,nptl) do_cc_core mode=static;;
    67         *)      ;;
    68     esac
    69 }
    70 
    71 # Core gcc pass 2
    72 do_cc_core_pass_2() {
    73     # In case we're building for bare metal, do nothing, we already have
    74     # our compiler.
    75     # In case we're not bare metal and building a canadian compiler, do nothing
    76     # In case we're NPTL, build the shared core gcc and the target libgcc.
    77     # In any other case, build the static core gcc and, if using gcc-4.3+,
    78     # also build the target libgcc.
    79     case "${CT_BARE_METAL},${CT_CANADIAN},${CT_THREADS}" in
    80         y,*,*)
    81             if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
    82                 do_cc_core mode=baremetal build_libgcc=yes build_libstdcxx=yes build_staticlinked=yes build_manuals=yes
    83             else
    84                 do_cc_core mode=baremetal build_libgcc=yes build_libstdcxx=yes build_manuals=yes
    85             fi
    86             ;;
    87         ,y,*)   ;;
    88         ,,nptl)
    89             do_cc_core mode=shared build_libgcc=yes
    90             ;;
    91         ,,win32)
    92             do_cc_core mode=static build_libgcc=yes
    93             ;;
    94         *)  if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
    95                 do_cc_core mode=static build_libgcc=yes
    96             else
    97                 do_cc_core mode=static
    98             fi
    99             ;;
   100     esac
   101 }
   102 
   103 #------------------------------------------------------------------------------
   104 # Build core gcc
   105 # This function is used to build both the static and the shared core C conpiler,
   106 # with or without the target libgcc. We need to know wether:
   107 #  - we're building static, shared or bare metal: mode=[static|shared|baremetal]
   108 #  - we need to build libgcc or not             : build_libgcc=[yes|no]       (default: no)
   109 #  - we need to build libstdc++ or not          : build_libstdcxx=[yes|no]    (default: no)
   110 #  - we need to build statically linked or not  : build_staticlinked=[yes|no] (default: no)
   111 # Usage: do_cc_core mode=[static|shared|baremetal] build_libgcc=[yes|no] build_staticlinked=[yes|no]
   112 do_cc_core() {
   113     local mode
   114     local build_libgcc=no
   115     local build_libstdcxx=no
   116     local build_staticlinked=no
   117     local build_manuals=no
   118     local core_prefix_dir
   119     local lang_opt
   120     local tmp
   121     local -a host_libstdcxx_flags
   122     local -a extra_config
   123     local -a core_LDFLAGS
   124     local -a core_targets
   125 
   126     while [ $# -ne 0 ]; do
   127         eval "${1// /\\ }"
   128         shift
   129     done
   130 
   131     lang_opt=c
   132     case "${mode}" in
   133         static)
   134             core_prefix_dir="${CT_CC_CORE_STATIC_PREFIX_DIR}"
   135             extra_config+=("--with-newlib")
   136             extra_config+=("--enable-threads=no")
   137             extra_config+=("--disable-shared")
   138             copy_headers=y  # For baremetal, as there's no headers to copy,
   139                             # we copy an empty directory. So, who cares?
   140             ;;
   141         shared)
   142             core_prefix_dir="${CT_CC_CORE_SHARED_PREFIX_DIR}"
   143             extra_config+=("--enable-shared")
   144             copy_headers=y
   145             ;;
   146         baremetal)
   147             core_prefix_dir="${CT_PREFIX_DIR}"
   148             extra_config+=("--with-newlib")
   149             extra_config+=("--enable-threads=no")
   150             extra_config+=("--disable-shared")
   151             [ "${CT_CC_LANG_CXX}" = "y" ] && lang_opt="${lang_opt},c++"
   152             copy_headers=n
   153             ;;
   154         *)
   155             CT_Abort "Internal Error: 'mode' must be one of: 'static', 'shared' or 'baremetal', not '${mode:-(empty)}'"
   156             ;;
   157     esac
   158 
   159     CT_DoStep INFO "Installing ${mode} core C compiler"
   160     mkdir -p "${CT_BUILD_DIR}/build-cc-core-${mode}"
   161     cd "${CT_BUILD_DIR}/build-cc-core-${mode}"
   162 
   163     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   164         # Bare metal delivers the core compiler as final compiler, so add version info and bugurl
   165         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   166         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   167     fi
   168 
   169     if [ "${copy_headers}" = "y" ]; then
   170         CT_DoLog DEBUG "Copying headers to install area of bootstrap gcc, so it can build libgcc2"
   171         CT_DoExecLog ALL cp -a "${CT_HEADERS_DIR}" "${core_prefix_dir}/${CT_TARGET}/include"
   172     fi
   173 
   174     CT_DoLog EXTRA "Configuring ${mode} core C compiler"
   175 
   176     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   177         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   178         if [ -n "${tmp}" ]; then
   179             extra_config+=("${tmp}")
   180         fi
   181     done
   182     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   183         extra_config+=("--enable-__cxa_atexit")
   184     else
   185         extra_config+=("--disable-__cxa_atexit")
   186     fi
   187 
   188     # *** WARNING ! ***
   189     # Keep this full if-else-if-elif-fi-fi block in sync
   190     # with the same block in do_cc, below.
   191     if [ "${build_staticlinked}" = "yes" ]; then
   192         core_LDFLAGS+=("-static")
   193         host_libstdcxx_flags+=("-static-libgcc")
   194         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   195         host_libstdcxx_flags+=("-lm")
   196         # Companion libraries are build static (eg !shared), so
   197         # the libstdc++ is not pulled automatically, although it
   198         # is needed. Shoe-horn it in our LDFLAGS
   199         # Ditto libm on some Fedora boxen
   200         core_LDFLAGS+=("-lstdc++")
   201         core_LDFLAGS+=("-lm")
   202     else
   203         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   204             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   205             # build script
   206             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   207             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   208             host_libstdcxx_flags+=("-static-libgcc")
   209             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   210             host_libstdcxx_flags+=("-lm")
   211         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   212             # When companion libraries are build static (eg !shared),
   213             # the libstdc++ is not pulled automatically, although it
   214             # is needed. Shoe-horn it in our LDFLAGS
   215             # Ditto libm on some Fedora boxen
   216             core_LDFLAGS+=("-lstdc++")
   217             core_LDFLAGS+=("-lm")
   218         fi
   219     fi
   220 
   221     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   222         extra_config+=("--with-gmp=${CT_COMPLIBS_DIR}")
   223         extra_config+=("--with-mpfr=${CT_COMPLIBS_DIR}")
   224     fi
   225     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   226         extra_config+=("--with-mpc=${CT_COMPLIBS_DIR}")
   227     fi
   228     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   229         extra_config+=("--with-ppl=${CT_COMPLIBS_DIR}")
   230         # With PPL 0.11+, also pull libpwl if needed
   231         if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   232             host_libstdcxx_flags+=("-L${CT_COMPLIBS_DIR}/lib")
   233             host_libstdcxx_flags+=("-lpwl")
   234         fi
   235         extra_config+=("--with-cloog=${CT_COMPLIBS_DIR}")
   236     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   237         extra_config+=("--with-ppl=no")
   238         extra_config+=("--with-cloog=no")
   239     fi
   240     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   241         extra_config+=("--with-libelf=${CT_COMPLIBS_DIR}")
   242         extra_config+=("--enable-lto")
   243     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   244         extra_config+=("--with-libelf=no")
   245         extra_config+=("--disable-lto")
   246     fi
   247 
   248     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   249         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   250     fi
   251 
   252     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   253         extra_config+=("--enable-target-optspace")
   254     fi
   255 
   256     case "${CT_CC_GCC_LDBL_128}" in
   257         y)  extra_config+=("--with-long-double-128");;
   258         m)  ;;
   259         "") extra_config+=("--without-long-double-128");;
   260     esac
   261 
   262     if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
   263         extra_config+=( --enable-linker-build-id )
   264     fi
   265 
   266     case "${CT_CC_GCC_LNK_HASH_STYLE}" in
   267         "") ;;
   268         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
   269     esac
   270 
   271     case "${CT_ARCH}" in
   272         mips)
   273             case "${CT_CC_GCC_mips_llsc}" in
   274                 y)  extra_config+=( --with-llsc );;
   275                 m)  ;;
   276                 *)  extra_config+=( --without-llsc );;
   277             esac
   278             case "${CT_CC_GCC_mips_synci}" in
   279                 y)  extra_config+=( --with-synci );;
   280                 m)  ;;
   281                 *)  extra_config+=( --without-synci );;
   282             esac
   283             if [ "${CT_CC_GCC_mips_plt}" ]; then
   284                 extra_config+=( --with-mips-plt )
   285             fi
   286             ;; # ARCH is mips
   287     esac
   288 
   289     extra_config+=(--disable-libgomp)
   290     extra_config+=(--disable-libmudflap)
   291 
   292     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   293 
   294     # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
   295     CT_DoExecLog CFG                                \
   296     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   297     CFLAGS="${CT_CFLAGS_FOR_HOST}"                  \
   298     LDFLAGS="${core_LDFLAGS[*]}"                    \
   299     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   300         --build=${CT_BUILD}                         \
   301         --host=${CT_HOST}                           \
   302         --target=${CT_TARGET}                       \
   303         --prefix="${core_prefix_dir}"               \
   304         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   305         --disable-multilib                          \
   306         --disable-libmudflap                        \
   307         ${CC_CORE_SYSROOT_ARG}                      \
   308         "${extra_config[@]}"                        \
   309         --disable-nls                               \
   310         --enable-languages="${lang_opt}"            \
   311         "${CT_CC_CORE_EXTRA_CONFIG_ARRAY[@]}"
   312 
   313     if [ "${build_libgcc}" = "yes" ]; then
   314         # HACK: we need to override SHLIB_LC from gcc/config/t-slibgcc-elf-ver or
   315         # gcc/config/t-libunwind so -lc is removed from the link for
   316         # libgcc_s.so, as we do not have a target -lc yet.
   317         # This is not as ugly as it appears to be ;-) All symbols get resolved
   318         # during the glibc build, and we provide a proper libgcc_s.so for the
   319         # cross toolchain during the final gcc build.
   320         #
   321         # As we cannot modify the source tree, nor override SHLIB_LC itself
   322         # during configure or make, we have to edit the resultant
   323         # gcc/libgcc.mk itself to remove -lc from the link.
   324         # This causes us to have to jump through some hoops...
   325         #
   326         # To produce libgcc.mk to edit we firstly require libiberty.a,
   327         # so we configure then build it.
   328         # Next we have to configure gcc, create libgcc.mk then edit it...
   329         # So much easier if we just edit the source tree, but hey...
   330         if [ ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/gcc/BASE-VER" ]; then
   331             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libiberty
   332             CT_DoExecLog ALL make ${JOBSFLAGS} -C libiberty libiberty.a
   333             CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp
   334             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp
   335         else
   336             CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp configure-build-libiberty
   337             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp all-build-libiberty
   338         fi
   339         # HACK: gcc-4.2 uses libdecnumber to build libgcc.mk, so build it here.
   340         if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/libdecnumber" ]; then
   341             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libdecnumber
   342             CT_DoExecLog ALL make ${JOBSFLAGS} -C libdecnumber libdecnumber.a
   343         fi
   344 
   345         # Starting with GCC 4.3, libgcc.mk is no longer built,
   346         # and libgcc.mvars is used instead.
   347 
   348         if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
   349             libgcc_rule="libgcc.mvars"
   350             core_targets=( gcc target-libgcc )
   351         else
   352             libgcc_rule="libgcc.mk"
   353             core_targets=( gcc )
   354         fi
   355 
   356         # On bare metal and canadian build the host-compiler is used when
   357         # actually the build-system compiler is required. Choose the correct
   358         # compilers for canadian build and use the defaults on other
   359         # configurations.
   360         if [ "${CT_BARE_METAL},${CT_CANADIAN}" = "y,y" ]; then
   361             repair_cc="CC_FOR_BUILD=${CT_BUILD}-gcc \
   362                        GCC_FOR_TARGET=${CT_TARGET}-gcc"
   363         else
   364             repair_cc=""
   365         fi
   366 
   367         CT_DoExecLog ALL make ${JOBSFLAGS} -C gcc ${libgcc_rule} \
   368                               ${repair_cc}
   369         sed -r -i -e 's@-lc@@g' gcc/${libgcc_rule}
   370     else # build_libgcc
   371         core_targets=( gcc )
   372     fi   # ! build libgcc
   373     if [    "${build_libstdcxx}" = "yes"    \
   374          -a "${CT_CC_LANG_CXX}"  = "y"      \
   375        ]; then
   376         core_targets+=( target-libstdc++-v3 )
   377     fi
   378 
   379     CT_DoLog EXTRA "Building ${mode} core C compiler"
   380     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/all-}"
   381 
   382     CT_DoLog EXTRA "Installing ${mode} core C compiler"
   383     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/install-}"
   384 
   385     if [ "${CT_BUILD_MANUALS}" = "y" -a "${build_manuals}" = "yes" ]; then
   386         CT_DoLog EXTRA "Building the GCC manuals"
   387         CT_DoExecLog ALL make pdf html
   388         CT_DoLog EXTRA "Installing the GCC manuals"
   389         CT_DoExecLog ALL make install-{pdf,html}-gcc
   390     fi
   391 
   392     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   393     # to call the C compiler with the same, somewhat canonical name.
   394     # check whether compiler has an extension
   395     file="$( ls -1 "${core_prefix_dir}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   396     [ -z "${file}" ] || ext=".${file##*.}"
   397     CT_DoExecLog ALL ln -sfv "${CT_TARGET}-gcc${ext}" "${core_prefix_dir}/bin/${CT_TARGET}-cc${ext}"
   398 
   399     CT_EndStep
   400 }
   401 
   402 #------------------------------------------------------------------------------
   403 # Build final gcc
   404 do_cc() {
   405     local -a host_libstdcxx_flags
   406     local -a extra_config
   407     local -a final_LDFLAGS
   408     local tmp
   409 
   410     # If building for bare metal, nothing to be done here, the static core conpiler is enough!
   411     [ "${CT_BARE_METAL}" = "y" ] && return 0
   412 
   413     CT_DoStep INFO "Installing final compiler"
   414 
   415     mkdir -p "${CT_BUILD_DIR}/build-cc"
   416     cd "${CT_BUILD_DIR}/build-cc"
   417 
   418     CT_DoLog EXTRA "Configuring final compiler"
   419 
   420     # Enable selected languages
   421     lang_opt="c"
   422     [ "${CT_CC_LANG_CXX}" = "y"      ] && lang_opt="${lang_opt},c++"
   423     [ "${CT_CC_LANG_FORTRAN}" = "y"  ] && lang_opt="${lang_opt},fortran"
   424     [ "${CT_CC_LANG_ADA}" = "y"      ] && lang_opt="${lang_opt},ada"
   425     [ "${CT_CC_LANG_JAVA}" = "y"     ] && lang_opt="${lang_opt},java"
   426     [ "${CT_CC_LANG_OBJC}" = "y"     ] && lang_opt="${lang_opt},objc"
   427     [ "${CT_CC_LANG_OBJCXX}" = "y"   ] && lang_opt="${lang_opt},obj-c++"
   428     CT_Test "Building ADA language is not yet supported. Will try..." "${CT_CC_LANG_ADA}" = "y"
   429     CT_Test "Building Objective-C language is not yet supported. Will try..." "${CT_CC_LANG_OBJC}" = "y"
   430     CT_Test "Building Objective-C++ language is not yet supported. Will try..." "${CT_CC_LANG_OBJCXX}" = "y"
   431     CT_Test "Building ${CT_CC_LANG_OTHERS//,/ } language(s) is not yet supported. Will try..." -n "${CT_CC_LANG_OTHERS}"
   432     lang_opt=$(echo "${lang_opt},${CT_CC_LANG_OTHERS}" |sed -r -e 's/,+/,/g; s/,*$//;')
   433 
   434     extra_config+=("--enable-languages=${lang_opt}")
   435     extra_config+=("--disable-multilib")
   436     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   437         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   438         if [ -n "${tmp}" ]; then
   439             extra_config+=("${tmp}")
   440         fi
   441     done
   442 
   443     [ "${CT_SHARED_LIBS}" = "y" ] || extra_config+=("--disable-shared")
   444     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   445         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   446         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   447     fi
   448     case "${CT_CC_GCC_SJLJ_EXCEPTIONS}" in
   449         y)  extra_config+=("--enable-sjlj-exceptions");;
   450         m)  ;;
   451         "") extra_config+=("--disable-sjlj-exceptions");;
   452     esac
   453     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   454         extra_config+=("--enable-__cxa_atexit")
   455     else
   456         extra_config+=("--disable-__cxa_atexit")
   457     fi
   458     if [ -n "${CT_CC_ENABLE_CXX_FLAGS}" ]; then
   459         extra_config+=("--enable-cxx-flags=${CT_CC_ENABLE_CXX_FLAGS}")
   460     fi
   461     if [ "${CT_CC_GCC_LIBMUDFLAP}" = "y" ]; then
   462         extra_config+=(--enable-libmudflap)
   463     else
   464         extra_config+=(--disable-libmudflap)
   465     fi
   466     if [ "${CT_CC_GCC_LIBGOMP}" = "y" ]; then
   467         extra_config+=(--enable-libgomp)
   468     else
   469         extra_config+=(--disable-libgomp)
   470     fi
   471     if [ "${CT_CC_GCC_LIBSSP}" = "y" ]; then
   472         extra_config+=(--enable-libssp)
   473     else
   474         extra_config+=(--disable-libssp)
   475     fi
   476 
   477     # *** WARNING ! ***
   478     # Keep this full if-else-if-elif-fi-fi block in sync
   479     # with the same block in do_cc_core, above.
   480     if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   481         final_LDFLAGS+=("-static")
   482         host_libstdcxx_flags+=("-static-libgcc")
   483         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   484         host_libstdcxx_flags+=("-lm")
   485         # Companion libraries are build static (eg !shared), so
   486         # the libstdc++ is not pulled automatically, although it
   487         # is needed. Shoe-horn it in our LDFLAGS
   488         # Ditto libm on some Fedora boxen
   489         final_LDFLAGS+=("-lstdc++")
   490         final_LDFLAGS+=("-lm")
   491     else
   492         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   493             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   494             # build script
   495             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   496             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   497             host_libstdcxx_flags+=("-static-libgcc")
   498             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   499             host_libstdcxx_flags+=("-lm")
   500         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   501             # When companion libraries are build static (eg !shared),
   502             # the libstdc++ is not pulled automatically, although it
   503             # is needed. Shoe-horn it in our LDFLAGS
   504             # Ditto libm on some Fedora boxen
   505             final_LDFLAGS+=("-lstdc++")
   506             final_LDFLAGS+=("-lm")
   507         fi
   508     fi
   509 
   510     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   511         extra_config+=("--with-gmp=${CT_COMPLIBS_DIR}")
   512         extra_config+=("--with-mpfr=${CT_COMPLIBS_DIR}")
   513     fi
   514     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   515         extra_config+=("--with-mpc=${CT_COMPLIBS_DIR}")
   516     fi
   517     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   518         extra_config+=("--with-ppl=${CT_COMPLIBS_DIR}")
   519         # With PPL 0.11+, also pull libpwl if needed
   520         if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   521             host_libstdcxx_flags+=("-L${CT_COMPLIBS_DIR}/lib")
   522             host_libstdcxx_flags+=("-lpwl")
   523         fi
   524         extra_config+=("--with-cloog=${CT_COMPLIBS_DIR}")
   525     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   526         extra_config+=("--with-ppl=no")
   527         extra_config+=("--with-cloog=no")
   528     fi
   529     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   530         extra_config+=("--with-libelf=${CT_COMPLIBS_DIR}")
   531     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   532         extra_config+=("--with-libelf=no")
   533     fi
   534 
   535     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   536         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   537     fi
   538 
   539     if [ "${CT_THREADS}" = "none" ]; then
   540         extra_config+=("--disable-threads")
   541         if [ "${CT_CC_GCC_4_2_or_later}" = y ]; then
   542             CT_Test "Disabling libgomp for no-thread gcc>=4.2" "${CT_CC_GCC_LIBGOMP}" = "Y"
   543             extra_config+=("--disable-libgomp")
   544         fi
   545     else
   546         if [ "${CT_THREADS}" = "win32" ]; then
   547             extra_config+=("--enable-threads=win32")
   548             extra_config+=("--disable-win32-registry")
   549         else
   550             extra_config+=("--enable-threads=posix")
   551         fi
   552     fi
   553 
   554     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   555         extra_config+=("--enable-target-optspace")
   556     fi
   557     if [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ]; then
   558         extra_config+=("--disable-libstdcxx-pch")
   559     fi
   560 
   561     case "${CT_CC_GCC_LDBL_128}" in
   562         y)  extra_config+=("--with-long-double-128");;
   563         m)  ;;
   564         "") extra_config+=("--without-long-double-128");;
   565     esac
   566 
   567     if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
   568         extra_config+=( --enable-linker-build-id )
   569     fi
   570 
   571     case "${CT_CC_GCC_LNK_HASH_STYLE}" in
   572         "") ;;
   573         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
   574     esac
   575 
   576     if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
   577         extra_config+=( --enable-plugin )
   578     fi
   579     if [ "${CT_CC_GCC_GOLD}" = "y" ]; then
   580         extra_config+=( --enable-gold )
   581     fi
   582 
   583     case "${CT_ARCH}" in
   584         mips)
   585             case "${CT_CC_GCC_mips_llsc}" in
   586                 y)  extra_config+=( --with-llsc );;
   587                 m)  ;;
   588                 *)  extra_config+=( --without-llsc );;
   589             esac
   590             case "${CT_CC_GCC_mips_synci}" in
   591                 y)  extra_config+=( --with-synci );;
   592                 m)  ;;
   593                 *)  extra_config+=( --without-synci );;
   594             esac
   595             if [ "${CT_CC_GCC_mips_plt}" ]; then
   596                 extra_config+=( --with-mips-plt )
   597             fi
   598             ;; # ARCH is mips
   599     esac
   600 
   601     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   602 
   603     # --disable-nls to work around crash bug on ppc405, but also because
   604     # embedded systems don't really need message catalogs...
   605     CT_DoExecLog CFG                                \
   606     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   607     CFLAGS="${CT_CFLAGS_FOR_HOST}"                  \
   608     LDFLAGS="${final_LDFLAGS[*]}"                   \
   609     CFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"         \
   610     CXXFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"       \
   611     LDFLAGS_FOR_TARGET="${CT_TARGET_LDFLAGS}"       \
   612     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   613         --build=${CT_BUILD}                         \
   614         --host=${CT_HOST}                           \
   615         --target=${CT_TARGET}                       \
   616         --prefix="${CT_PREFIX_DIR}"                 \
   617         ${CC_SYSROOT_ARG}                           \
   618         "${extra_config[@]}"                        \
   619         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   620         --disable-nls                               \
   621         --enable-c99                                \
   622         --enable-long-long                          \
   623         "${CT_CC_EXTRA_CONFIG_ARRAY[@]}"
   624 
   625     if [ "${CT_CANADIAN}" = "y" ]; then
   626         CT_DoLog EXTRA "Building libiberty"
   627         CT_DoExecLog ALL make ${JOBSFLAGS} all-build-libiberty
   628     fi
   629 
   630     CT_DoLog EXTRA "Building final compiler"
   631     CT_DoExecLog ALL make ${JOBSFLAGS} all
   632 
   633     CT_DoLog EXTRA "Installing final compiler"
   634     CT_DoExecLog ALL make ${JOBSFLAGS} install
   635 
   636     if [ "${CT_BUILD_MANUALS}" = "y" ]; then
   637         CT_DoLog EXTRA "Building the GCC manuals"
   638         CT_DoExecLog ALL make ${JOBSFLAGS} pdf html
   639         CT_DoLog EXTRA "Installing the GCC manuals"
   640         CT_DoExecLog ALL make install-{pdf,html}-gcc
   641     fi
   642 
   643     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   644     # to call the C compiler with the same, somewhat canonical name.
   645     # check whether compiler has an extension
   646     file="$( ls -1 "${CT_PREFIX_DIR}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   647     [ -z "${file}" ] || ext=".${file##*.}"
   648     CT_DoExecLog ALL ln -sfv "${CT_TARGET}-gcc${ext}" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-cc${ext}"
   649 
   650     CT_EndStep
   651 }