scripts/build/cc/gcc.sh
author Zhenqiang Chen <zhenqiang.chen@linaro.org>
Fri Nov 18 11:32:50 2011 +0800 (2011-11-18)
changeset 2782 e3e1c9d45bdd
parent 2780 03ab39f149b4
child 2814 3dc2727ebffc
permissions -rw-r--r--
cc/gcc: Apply CT_CC_GCC_DISABLE_PCH to do_cc_core.

Otherwise, users have to input --disable-libstdcxx-pch option
when building bare-metal CANADIAN C++ compiler.

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