scripts/build/cc/gcc.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jul 03 22:32:36 2011 +0200 (2011-07-03)
changeset 2532 288e460c3656
parent 2523 b1bf9ca6db1a
child 2541 7cce5c8fc79a
permissions -rw-r--r--
cc/gcc: fix non-MIPS builds

The new MIPS-specific options are not valid for other targets.
Also, move the arch-specific setting lower in the extra_config setting.

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