scripts/build/cc/gcc.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Wed Nov 23 23:25:43 2011 +0100 (2011-11-23)
changeset 2815 446a17b5dd1e
parent 2782 e3e1c9d45bdd
child 2817 240df3865193
permissions -rw-r--r--
config: add option to build multilib

Add a toolchain-wide option to enable multilib.

This is currently a noop, and will be implemented
in subsequent patches for each impacted components.

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_TOOLCHAIN_ENABLE_NLS}" != "y" ] && extra_config+=("--disable-nls")
   293 
   294     [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ] && extra_config+=("--disable-libstdcxx-pch")
   295 
   296     if [ "${CT_CC_GCC_SYSTEM_ZLIB}" = "y" ]; then
   297         extra_config+=("--with-system-zlib")
   298     fi
   299 
   300     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   301 
   302     # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
   303     CT_DoExecLog CFG                                \
   304     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   305     CFLAGS="${CT_CFLAGS_FOR_HOST}"                  \
   306     LDFLAGS="${core_LDFLAGS[*]}"                    \
   307     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   308         --build=${CT_BUILD}                         \
   309         --host=${CT_HOST}                           \
   310         --target=${CT_TARGET}                       \
   311         --prefix="${core_prefix_dir}"               \
   312         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   313         --disable-multilib                          \
   314         --disable-libmudflap                        \
   315         ${CC_CORE_SYSROOT_ARG}                      \
   316         "${extra_config[@]}"                        \
   317         --enable-languages="${lang_opt}"            \
   318         "${CT_CC_CORE_EXTRA_CONFIG_ARRAY[@]}"
   319 
   320     if [ "${build_libgcc}" = "yes" ]; then
   321         # HACK: we need to override SHLIB_LC from gcc/config/t-slibgcc-elf-ver or
   322         # gcc/config/t-libunwind so -lc is removed from the link for
   323         # libgcc_s.so, as we do not have a target -lc yet.
   324         # This is not as ugly as it appears to be ;-) All symbols get resolved
   325         # during the glibc build, and we provide a proper libgcc_s.so for the
   326         # cross toolchain during the final gcc build.
   327         #
   328         # As we cannot modify the source tree, nor override SHLIB_LC itself
   329         # during configure or make, we have to edit the resultant
   330         # gcc/libgcc.mk itself to remove -lc from the link.
   331         # This causes us to have to jump through some hoops...
   332         #
   333         # To produce libgcc.mk to edit we firstly require libiberty.a,
   334         # so we configure then build it.
   335         # Next we have to configure gcc, create libgcc.mk then edit it...
   336         # So much easier if we just edit the source tree, but hey...
   337         if [ ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/gcc/BASE-VER" ]; then
   338             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libiberty
   339             CT_DoExecLog ALL make ${JOBSFLAGS} -C libiberty libiberty.a
   340             CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp
   341             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp
   342         else
   343             CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp configure-build-libiberty
   344             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp all-build-libiberty
   345         fi
   346         # HACK: gcc-4.2 uses libdecnumber to build libgcc.mk, so build it here.
   347         if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/libdecnumber" ]; then
   348             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libdecnumber
   349             CT_DoExecLog ALL make ${JOBSFLAGS} -C libdecnumber libdecnumber.a
   350         fi
   351 
   352         # Starting with GCC 4.3, libgcc.mk is no longer built,
   353         # and libgcc.mvars is used instead.
   354 
   355         if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
   356             libgcc_rule="libgcc.mvars"
   357             core_targets=( gcc target-libgcc )
   358         else
   359             libgcc_rule="libgcc.mk"
   360             core_targets=( gcc )
   361         fi
   362 
   363         # On bare metal and canadian build the host-compiler is used when
   364         # actually the build-system compiler is required. Choose the correct
   365         # compilers for canadian build and use the defaults on other
   366         # configurations.
   367         if [ "${CT_BARE_METAL},${CT_CANADIAN}" = "y,y" ]; then
   368             repair_cc="CC_FOR_BUILD=${CT_BUILD}-gcc \
   369                        GCC_FOR_TARGET=${CT_TARGET}-gcc"
   370         else
   371             repair_cc=""
   372         fi
   373 
   374         CT_DoExecLog ALL make ${JOBSFLAGS} -C gcc ${libgcc_rule} \
   375                               ${repair_cc}
   376         sed -r -i -e 's@-lc@@g' gcc/${libgcc_rule}
   377     else # build_libgcc
   378         core_targets=( gcc )
   379     fi   # ! build libgcc
   380     if [    "${build_libstdcxx}" = "yes"    \
   381          -a "${CT_CC_LANG_CXX}"  = "y"      \
   382        ]; then
   383         core_targets+=( target-libstdc++-v3 )
   384     fi
   385 
   386     CT_DoLog EXTRA "Building ${mode} core C compiler"
   387     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/all-}"
   388 
   389     CT_DoLog EXTRA "Installing ${mode} core C compiler"
   390     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/install-}"
   391 
   392     if [ "${CT_BUILD_MANUALS}" = "y" -a "${build_manuals}" = "yes" ]; then
   393         CT_DoLog EXTRA "Building the GCC manuals"
   394         CT_DoExecLog ALL make pdf html
   395         CT_DoLog EXTRA "Installing the GCC manuals"
   396         CT_DoExecLog ALL make install-{pdf,html}-gcc
   397     fi
   398 
   399     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   400     # to call the C compiler with the same, somewhat canonical name.
   401     # check whether compiler has an extension
   402     file="$( ls -1 "${core_prefix_dir}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   403     [ -z "${file}" ] || ext=".${file##*.}"
   404     CT_DoExecLog ALL ln -sfv "${CT_TARGET}-gcc${ext}" "${core_prefix_dir}/bin/${CT_TARGET}-cc${ext}"
   405 
   406     CT_EndStep
   407 }
   408 
   409 #------------------------------------------------------------------------------
   410 # Build final gcc
   411 do_cc() {
   412     local -a host_libstdcxx_flags
   413     local -a extra_config
   414     local -a final_LDFLAGS
   415     local tmp
   416 
   417     # If building for bare metal, nothing to be done here, the static core conpiler is enough!
   418     [ "${CT_BARE_METAL}" = "y" ] && return 0
   419 
   420     CT_DoStep INFO "Installing final compiler"
   421 
   422     mkdir -p "${CT_BUILD_DIR}/build-cc"
   423     cd "${CT_BUILD_DIR}/build-cc"
   424 
   425     CT_DoLog EXTRA "Configuring final compiler"
   426 
   427     # Enable selected languages
   428     lang_opt="c"
   429     [ "${CT_CC_LANG_CXX}" = "y"      ] && lang_opt="${lang_opt},c++"
   430     [ "${CT_CC_LANG_FORTRAN}" = "y"  ] && lang_opt="${lang_opt},fortran"
   431     [ "${CT_CC_LANG_ADA}" = "y"      ] && lang_opt="${lang_opt},ada"
   432     [ "${CT_CC_LANG_JAVA}" = "y"     ] && lang_opt="${lang_opt},java"
   433     [ "${CT_CC_LANG_OBJC}" = "y"     ] && lang_opt="${lang_opt},objc"
   434     [ "${CT_CC_LANG_OBJCXX}" = "y"   ] && lang_opt="${lang_opt},obj-c++"
   435     CT_Test "Building ADA language is not yet supported. Will try..." "${CT_CC_LANG_ADA}" = "y"
   436     CT_Test "Building Objective-C language is not yet supported. Will try..." "${CT_CC_LANG_OBJC}" = "y"
   437     CT_Test "Building Objective-C++ language is not yet supported. Will try..." "${CT_CC_LANG_OBJCXX}" = "y"
   438     CT_Test "Building ${CT_CC_LANG_OTHERS//,/ } language(s) is not yet supported. Will try..." -n "${CT_CC_LANG_OTHERS}"
   439     lang_opt=$(echo "${lang_opt},${CT_CC_LANG_OTHERS}" |sed -r -e 's/,+/,/g; s/,*$//;')
   440 
   441     extra_config+=("--enable-languages=${lang_opt}")
   442     extra_config+=("--disable-multilib")
   443     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   444         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   445         if [ -n "${tmp}" ]; then
   446             extra_config+=("${tmp}")
   447         fi
   448     done
   449 
   450     [ "${CT_SHARED_LIBS}" = "y" ] || extra_config+=("--disable-shared")
   451     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   452         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   453         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   454     fi
   455     case "${CT_CC_GCC_SJLJ_EXCEPTIONS}" in
   456         y)  extra_config+=("--enable-sjlj-exceptions");;
   457         m)  ;;
   458         "") extra_config+=("--disable-sjlj-exceptions");;
   459     esac
   460     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   461         extra_config+=("--enable-__cxa_atexit")
   462     else
   463         extra_config+=("--disable-__cxa_atexit")
   464     fi
   465     if [ -n "${CT_CC_ENABLE_CXX_FLAGS}" ]; then
   466         extra_config+=("--enable-cxx-flags=${CT_CC_ENABLE_CXX_FLAGS}")
   467     fi
   468     if [ "${CT_CC_GCC_LIBMUDFLAP}" = "y" ]; then
   469         extra_config+=(--enable-libmudflap)
   470     else
   471         extra_config+=(--disable-libmudflap)
   472     fi
   473     if [ "${CT_CC_GCC_LIBGOMP}" = "y" ]; then
   474         extra_config+=(--enable-libgomp)
   475     else
   476         extra_config+=(--disable-libgomp)
   477     fi
   478     if [ "${CT_CC_GCC_LIBSSP}" = "y" ]; then
   479         extra_config+=(--enable-libssp)
   480     else
   481         extra_config+=(--disable-libssp)
   482     fi
   483 
   484     # *** WARNING ! ***
   485     # Keep this full if-else-if-elif-fi-fi block in sync
   486     # with the same block in do_cc_core, above.
   487     if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   488         final_LDFLAGS+=("-static")
   489         host_libstdcxx_flags+=("-static-libgcc")
   490         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   491         host_libstdcxx_flags+=("-lm")
   492         # Companion libraries are build static (eg !shared), so
   493         # the libstdc++ is not pulled automatically, although it
   494         # is needed. Shoe-horn it in our LDFLAGS
   495         # Ditto libm on some Fedora boxen
   496         final_LDFLAGS+=("-lstdc++")
   497         final_LDFLAGS+=("-lm")
   498     else
   499         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   500             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   501             # build script
   502             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   503             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   504             host_libstdcxx_flags+=("-static-libgcc")
   505             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   506             host_libstdcxx_flags+=("-lm")
   507         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   508             # When companion libraries are build static (eg !shared),
   509             # the libstdc++ is not pulled automatically, although it
   510             # is needed. Shoe-horn it in our LDFLAGS
   511             # Ditto libm on some Fedora boxen
   512             final_LDFLAGS+=("-lstdc++")
   513             final_LDFLAGS+=("-lm")
   514         fi
   515     fi
   516 
   517     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   518         extra_config+=("--with-gmp=${CT_COMPLIBS_DIR}")
   519         extra_config+=("--with-mpfr=${CT_COMPLIBS_DIR}")
   520     fi
   521     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   522         extra_config+=("--with-mpc=${CT_COMPLIBS_DIR}")
   523     fi
   524     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   525         extra_config+=("--with-ppl=${CT_COMPLIBS_DIR}")
   526         # With PPL 0.11+, also pull libpwl if needed
   527         if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   528             host_libstdcxx_flags+=("-L${CT_COMPLIBS_DIR}/lib")
   529             host_libstdcxx_flags+=("-lpwl")
   530         fi
   531         extra_config+=("--with-cloog=${CT_COMPLIBS_DIR}")
   532     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   533         extra_config+=("--with-ppl=no")
   534         extra_config+=("--with-cloog=no")
   535     fi
   536     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   537         extra_config+=("--with-libelf=${CT_COMPLIBS_DIR}")
   538     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   539         extra_config+=("--with-libelf=no")
   540     fi
   541 
   542     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   543         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   544     fi
   545 
   546     if [ "${CT_THREADS}" = "none" ]; then
   547         extra_config+=("--disable-threads")
   548         if [ "${CT_CC_GCC_4_2_or_later}" = y ]; then
   549             CT_Test "Disabling libgomp for no-thread gcc>=4.2" "${CT_CC_GCC_LIBGOMP}" = "Y"
   550             extra_config+=("--disable-libgomp")
   551         fi
   552     else
   553         if [ "${CT_THREADS}" = "win32" ]; then
   554             extra_config+=("--enable-threads=win32")
   555             extra_config+=("--disable-win32-registry")
   556         else
   557             extra_config+=("--enable-threads=posix")
   558         fi
   559     fi
   560 
   561     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   562         extra_config+=("--enable-target-optspace")
   563     fi
   564     if [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ]; then
   565         extra_config+=("--disable-libstdcxx-pch")
   566     fi
   567 
   568     case "${CT_CC_GCC_LDBL_128}" in
   569         y)  extra_config+=("--with-long-double-128");;
   570         m)  ;;
   571         "") extra_config+=("--without-long-double-128");;
   572     esac
   573 
   574     if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
   575         extra_config+=( --enable-linker-build-id )
   576     fi
   577 
   578     case "${CT_CC_GCC_LNK_HASH_STYLE}" in
   579         "") ;;
   580         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
   581     esac
   582 
   583     if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
   584         extra_config+=( --enable-plugin )
   585     fi
   586     if [ "${CT_CC_GCC_GOLD}" = "y" ]; then
   587         extra_config+=( --enable-gold )
   588     fi
   589 
   590     case "${CT_ARCH}" in
   591         mips)
   592             case "${CT_CC_GCC_mips_llsc}" in
   593                 y)  extra_config+=( --with-llsc );;
   594                 m)  ;;
   595                 *)  extra_config+=( --without-llsc );;
   596             esac
   597             case "${CT_CC_GCC_mips_synci}" in
   598                 y)  extra_config+=( --with-synci );;
   599                 m)  ;;
   600                 *)  extra_config+=( --without-synci );;
   601             esac
   602             if [ "${CT_CC_GCC_mips_plt}" ]; then
   603                 extra_config+=( --with-mips-plt )
   604             fi
   605             ;; # ARCH is mips
   606     esac
   607 
   608     [ "${CT_TOOLCHAIN_ENABLE_NLS}" != "y" ] && extra_config+=("--disable-nls")
   609 
   610     if [ "${CT_CC_GCC_SYSTEM_ZLIB}" = "y" ]; then
   611         extra_config+=("--with-system-zlib")
   612     fi
   613 
   614     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   615 
   616     CT_DoExecLog CFG                                \
   617     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   618     CFLAGS="${CT_CFLAGS_FOR_HOST}"                  \
   619     LDFLAGS="${final_LDFLAGS[*]}"                   \
   620     CFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"         \
   621     CXXFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"       \
   622     LDFLAGS_FOR_TARGET="${CT_TARGET_LDFLAGS}"       \
   623     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   624         --build=${CT_BUILD}                         \
   625         --host=${CT_HOST}                           \
   626         --target=${CT_TARGET}                       \
   627         --prefix="${CT_PREFIX_DIR}"                 \
   628         ${CC_SYSROOT_ARG}                           \
   629         "${extra_config[@]}"                        \
   630         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   631         --enable-c99                                \
   632         --enable-long-long                          \
   633         "${CT_CC_EXTRA_CONFIG_ARRAY[@]}"
   634 
   635     if [ "${CT_CANADIAN}" = "y" ]; then
   636         CT_DoLog EXTRA "Building libiberty"
   637         CT_DoExecLog ALL make ${JOBSFLAGS} all-build-libiberty
   638     fi
   639 
   640     CT_DoLog EXTRA "Building final compiler"
   641     CT_DoExecLog ALL make ${JOBSFLAGS} all
   642 
   643     CT_DoLog EXTRA "Installing final compiler"
   644     CT_DoExecLog ALL make ${JOBSFLAGS} install
   645 
   646     if [ "${CT_BUILD_MANUALS}" = "y" ]; then
   647         CT_DoLog EXTRA "Building the GCC manuals"
   648         CT_DoExecLog ALL make ${JOBSFLAGS} pdf html
   649         CT_DoLog EXTRA "Installing the GCC manuals"
   650         CT_DoExecLog ALL make install-{pdf,html}-gcc
   651     fi
   652 
   653     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   654     # to call the C compiler with the same, somewhat canonical name.
   655     # check whether compiler has an extension
   656     file="$( ls -1 "${CT_PREFIX_DIR}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   657     [ -z "${file}" ] || ext=".${file##*.}"
   658     CT_DoExecLog ALL ln -sfv "${CT_TARGET}-gcc${ext}" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-cc${ext}"
   659 
   660     CT_EndStep
   661 }