scripts/build/cc/gcc.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Aug 23 21:11:26 2011 +0200 (2011-08-23)
changeset 2891 f176fee535a0
parent 2890 a59712c236df
child 2892 aa934ec4b4ee
permissions -rw-r--r--
cc/gcc: add 'cflags' paramater to the core backend

As the core backend is used to generate the bare-metal compiler,
we need to pass it the host CFLAGS.

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     local -a core_opts
    59     local do_core
    60 
    61     # If we're building for bare metal, build the static core gcc,
    62     # with libgcc.
    63     # In case we're not bare metal and building a canadian compiler, do nothing
    64     # In case we're not bare metal, and we're NPTL, build the static core gcc.
    65     # In any other case, do nothing.
    66     case "${CT_BARE_METAL},${CT_CANADIAN},${CT_THREADS}" in
    67         y,*,*)
    68             do_core=y
    69             core_opts+=( "mode=static" )
    70             core_opts+=( "host=${CT_HOST}" )
    71             core_opts+=( "complibs=${CT_COMPLIBS_DIR}" )
    72             core_opts+=( "prefix=${CT_CC_CORE_STATIC_PREFIX_DIR}" )
    73             core_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
    74             ;;
    75         ,y,*)
    76             ;;
    77         ,,nptl)
    78             do_core=y
    79             core_opts+=( "mode=static" )
    80             core_opts+=( "host=${CT_HOST}" )
    81             core_opts+=( "complibs=${CT_COMPLIBS_DIR}" )
    82             core_opts+=( "prefix=${CT_CC_CORE_STATIC_PREFIX_DIR}" )
    83             core_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
    84             ;;
    85         *)
    86             ;;
    87     esac
    88 
    89     if [ "${do_core}" = "y" ]; then
    90         do_cc_core_backend "${core_opts[@]}"
    91     fi
    92 }
    93 
    94 # Core gcc pass 2
    95 do_cc_core_pass_2() {
    96     local -a core_opts
    97     local do_core
    98 
    99     # In case we're building for bare metal, do nothing, we already have
   100     # our compiler.
   101     # In case we're not bare metal and building a canadian compiler, do nothing
   102     # In case we're NPTL, build the shared core gcc and the target libgcc.
   103     # In any other case, build the static core gcc and, if using gcc-4.3+,
   104     # also build the target libgcc.
   105     case "${CT_BARE_METAL},${CT_CANADIAN},${CT_THREADS}" in
   106         y,*,*)
   107             do_core=y
   108             core_opts+=( "mode=baremetal" )
   109             core_opts+=( "host=${CT_HOST}" )
   110             core_opts+=( "build_libgcc=yes" )
   111             core_opts+=( "build_libstdcxx=yes" )
   112             core_opts+=( "complibs=${CT_COMPLIBS_DIR}" )
   113             core_opts+=( "prefix=${CT_PREFIX_DIR}" )
   114             core_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
   115             if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   116                 core_opts+=( "build_staticlinked=yes" )
   117             fi
   118             core_opts+=( "build_manuals=yes" )
   119             ;;
   120         ,y,*)   ;;
   121         ,,nptl)
   122             do_core=y
   123             core_opts+=( "mode=shared" )
   124             core_opts+=( "host=${CT_HOST}" )
   125             core_opts+=( "build_libgcc=yes" )
   126             core_opts+=( "complibs=${CT_COMPLIBS_DIR}" )
   127             core_opts+=( "prefix=${CT_CC_CORE_SHARED_PREFIX_DIR}" )
   128             core_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
   129             ;;
   130         ,,win32)
   131             do_core=y
   132             core_opts+=( "mode=static" )
   133             core_opts+=( "host=${CT_HOST}" )
   134             core_opts+=( "build_libgcc=yes" )
   135             core_opts+=( "complibs=${CT_COMPLIBS_DIR}" )
   136             core_opts+=( "prefix=${CT_CC_CORE_STATIC_PREFIX_DIR}" )
   137             core_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
   138             ;;
   139         *)
   140             do_core=y
   141             core_opts+=( "mode=static" )
   142             core_opts+=( "host=${CT_HOST}" )
   143             core_opts+=( "complibs=${CT_COMPLIBS_DIR}" )
   144             core_opts+=( "prefix=${CT_CC_CORE_STATIC_PREFIX_DIR}" )
   145             core_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
   146             if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
   147                 core_opts+=( "build_libgcc=yes" )
   148             fi
   149             ;;
   150     esac
   151 
   152     if [ "${do_core}" = "y" ]; then
   153         do_cc_core_backend "${core_opts[@]}"
   154     fi
   155 }
   156 
   157 #------------------------------------------------------------------------------
   158 # Build core gcc
   159 # This function is used to build both the static and the shared core C compiler,
   160 # with or without the target libgcc. We need to know wether:
   161 #  - we're building static, shared or bare metal: mode=[static|shared|baremetal]
   162 #  - we need to build libgcc or not             : build_libgcc=[yes|no]       (default: no)
   163 #  - we need to build libstdc++ or not          : build_libstdcxx=[yes|no]    (default: no)
   164 #  - we need to build statically linked or not  : build_staticlinked=[yes|no] (default: no)
   165 #  - where to find the companion libs (prefix)  : complibs=<prefix_dir>       (no default value)
   166 #  - the prefix to install into (directory)     : prefix=<directory>          (no default value)
   167 #  - the machine we will run on (tuple)         : host=<tuple>                (no default tuple)
   168 #  - the CFLAGS to use                          : cflags=<CFLAGS>             (empty)
   169 # Usage: do_cc_core_backend mode=[static|shared|baremetal] build_libgcc=[yes|no] build_staticlinked=[yes|no]
   170 do_cc_core_backend() {
   171     local mode
   172     local build_libgcc=no
   173     local build_libstdcxx=no
   174     local build_staticlinked=no
   175     local build_manuals=no
   176     local host
   177     local prefix
   178     local complibs
   179     local lang_opt
   180     local cflags
   181     local tmp
   182     local -a host_libstdcxx_flags
   183     local -a extra_config
   184     local -a core_LDFLAGS
   185     local -a core_targets
   186     local arg
   187 
   188     for arg in "$@"; do
   189         eval "${arg// /\\ }"
   190     done
   191 
   192     lang_opt=c
   193     case "${mode}" in
   194         static)
   195             extra_config+=("--with-newlib")
   196             extra_config+=("--enable-threads=no")
   197             extra_config+=("--disable-shared")
   198             copy_headers=y  # For baremetal, as there's no headers to copy,
   199                             # we copy an empty directory. So, who cares?
   200             ;;
   201         shared)
   202             extra_config+=("--enable-shared")
   203             copy_headers=y
   204             ;;
   205         baremetal)
   206             extra_config+=("--with-newlib")
   207             extra_config+=("--enable-threads=no")
   208             extra_config+=("--disable-shared")
   209             [ "${CT_CC_LANG_CXX}" = "y" ] && lang_opt="${lang_opt},c++"
   210             copy_headers=n
   211             ;;
   212         *)
   213             CT_Abort "Internal Error: 'mode' must be one of: 'static', 'shared' or 'baremetal', not '${mode:-(empty)}'"
   214             ;;
   215     esac
   216 
   217     CT_DoStep INFO "Installing ${mode} core C compiler"
   218     mkdir -p "${CT_BUILD_DIR}/build-cc-core-${mode}"
   219     cd "${CT_BUILD_DIR}/build-cc-core-${mode}"
   220 
   221     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   222         # Bare metal delivers the core compiler as final compiler, so add version info and bugurl
   223         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   224         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   225     fi
   226 
   227     if [ "${copy_headers}" = "y" ]; then
   228         CT_DoLog DEBUG "Copying headers to install area of bootstrap gcc, so it can build libgcc2"
   229         CT_DoExecLog ALL cp -a "${CT_HEADERS_DIR}" "${prefix}/${CT_TARGET}/include"
   230     fi
   231 
   232     CT_DoLog EXTRA "Configuring ${mode} core C compiler"
   233 
   234     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   235         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   236         if [ -n "${tmp}" ]; then
   237             extra_config+=("${tmp}")
   238         fi
   239     done
   240     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   241         extra_config+=("--enable-__cxa_atexit")
   242     else
   243         extra_config+=("--disable-__cxa_atexit")
   244     fi
   245 
   246     # *** WARNING ! ***
   247     # Keep this full if-else-if-elif-fi-fi block in sync
   248     # with the same block in do_cc, below.
   249     if [ "${build_staticlinked}" = "yes" ]; then
   250         core_LDFLAGS+=("-static")
   251         host_libstdcxx_flags+=("-static-libgcc")
   252         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   253         host_libstdcxx_flags+=("-lm")
   254         # Companion libraries are build static (eg !shared), so
   255         # the libstdc++ is not pulled automatically, although it
   256         # is needed. Shoe-horn it in our LDFLAGS
   257         # Ditto libm on some Fedora boxen
   258         core_LDFLAGS+=("-lstdc++")
   259         core_LDFLAGS+=("-lm")
   260     else
   261         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   262             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   263             # build script
   264             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   265             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   266             host_libstdcxx_flags+=("-static-libgcc")
   267             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   268             host_libstdcxx_flags+=("-lm")
   269         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   270             # When companion libraries are build static (eg !shared),
   271             # the libstdc++ is not pulled automatically, although it
   272             # is needed. Shoe-horn it in our LDFLAGS
   273             # Ditto libm on some Fedora boxen
   274             core_LDFLAGS+=("-lstdc++")
   275             core_LDFLAGS+=("-lm")
   276         fi
   277     fi
   278 
   279     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   280         extra_config+=("--with-gmp=${complibs}")
   281         extra_config+=("--with-mpfr=${complibs}")
   282     fi
   283     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   284         extra_config+=("--with-mpc=${complibs}")
   285     fi
   286     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   287         extra_config+=("--with-ppl=${complibs}")
   288         # With PPL 0.11+, also pull libpwl if needed
   289         if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   290             host_libstdcxx_flags+=("-L${complibs}/lib")
   291             host_libstdcxx_flags+=("-lpwl")
   292         fi
   293         extra_config+=("--with-cloog=${complibs}")
   294     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   295         extra_config+=("--with-ppl=no")
   296         extra_config+=("--with-cloog=no")
   297     fi
   298     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   299         extra_config+=("--with-libelf=${complibs}")
   300         extra_config+=("--enable-lto")
   301     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   302         extra_config+=("--with-libelf=no")
   303         extra_config+=("--disable-lto")
   304     fi
   305 
   306     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   307         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   308     fi
   309 
   310     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   311         extra_config+=("--enable-target-optspace")
   312     fi
   313 
   314     case "${CT_CC_GCC_LDBL_128}" in
   315         y)  extra_config+=("--with-long-double-128");;
   316         m)  ;;
   317         "") extra_config+=("--without-long-double-128");;
   318     esac
   319 
   320     if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
   321         extra_config+=( --enable-linker-build-id )
   322     fi
   323 
   324     case "${CT_CC_GCC_LNK_HASH_STYLE}" in
   325         "") ;;
   326         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
   327     esac
   328 
   329     case "${CT_ARCH}" in
   330         mips)
   331             case "${CT_CC_GCC_mips_llsc}" in
   332                 y)  extra_config+=( --with-llsc );;
   333                 m)  ;;
   334                 *)  extra_config+=( --without-llsc );;
   335             esac
   336             case "${CT_CC_GCC_mips_synci}" in
   337                 y)  extra_config+=( --with-synci );;
   338                 m)  ;;
   339                 *)  extra_config+=( --without-synci );;
   340             esac
   341             if [ "${CT_CC_GCC_mips_plt}" ]; then
   342                 extra_config+=( --with-mips-plt )
   343             fi
   344             ;; # ARCH is mips
   345     esac
   346 
   347     extra_config+=(--disable-libgomp)
   348     extra_config+=(--disable-libmudflap)
   349 
   350     [ "${CT_TOOLCHAIN_ENABLE_NLS}" != "y" ] && extra_config+=("--disable-nls")
   351 
   352     [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ] && extra_config+=("--disable-libstdcxx-pch")
   353 
   354     if [ "${CT_CC_GCC_SYSTEM_ZLIB}" = "y" ]; then
   355         extra_config+=("--with-system-zlib")
   356     fi
   357 
   358     if [ "${CT_MULTILIB}" = "y" ]; then
   359         extra_config+=("--enable-multilib")
   360     else
   361         extra_config+=("--disable-multilib")
   362     fi
   363 
   364     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   365 
   366     # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
   367     CT_DoExecLog CFG                                \
   368     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   369     CFLAGS="${cflags}"                              \
   370     LDFLAGS="${core_LDFLAGS[*]}"                    \
   371     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   372         --build=${CT_BUILD}                         \
   373         --host=${host}                              \
   374         --target=${CT_TARGET}                       \
   375         --prefix="${prefix}"                        \
   376         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   377         --disable-libmudflap                        \
   378         ${CC_CORE_SYSROOT_ARG}                      \
   379         "${extra_config[@]}"                        \
   380         --enable-languages="${lang_opt}"            \
   381         "${CT_CC_CORE_EXTRA_CONFIG_ARRAY[@]}"
   382 
   383     if [ "${build_libgcc}" = "yes" ]; then
   384         # HACK: we need to override SHLIB_LC from gcc/config/t-slibgcc-elf-ver or
   385         # gcc/config/t-libunwind so -lc is removed from the link for
   386         # libgcc_s.so, as we do not have a target -lc yet.
   387         # This is not as ugly as it appears to be ;-) All symbols get resolved
   388         # during the glibc build, and we provide a proper libgcc_s.so for the
   389         # cross toolchain during the final gcc build.
   390         #
   391         # As we cannot modify the source tree, nor override SHLIB_LC itself
   392         # during configure or make, we have to edit the resultant
   393         # gcc/libgcc.mk itself to remove -lc from the link.
   394         # This causes us to have to jump through some hoops...
   395         #
   396         # To produce libgcc.mk to edit we firstly require libiberty.a,
   397         # so we configure then build it.
   398         # Next we have to configure gcc, create libgcc.mk then edit it...
   399         # So much easier if we just edit the source tree, but hey...
   400         if [ ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/gcc/BASE-VER" ]; then
   401             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libiberty
   402             CT_DoExecLog ALL make ${JOBSFLAGS} -C libiberty libiberty.a
   403             CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp
   404             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp
   405         else
   406             CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp configure-build-libiberty
   407             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp all-build-libiberty
   408         fi
   409         # HACK: gcc-4.2 uses libdecnumber to build libgcc.mk, so build it here.
   410         if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/libdecnumber" ]; then
   411             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libdecnumber
   412             CT_DoExecLog ALL make ${JOBSFLAGS} -C libdecnumber libdecnumber.a
   413         fi
   414 
   415         # Starting with GCC 4.3, libgcc.mk is no longer built,
   416         # and libgcc.mvars is used instead.
   417 
   418         if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
   419             libgcc_rule="libgcc.mvars"
   420             core_targets=( gcc target-libgcc )
   421         else
   422             libgcc_rule="libgcc.mk"
   423             core_targets=( gcc )
   424         fi
   425 
   426         # On bare metal and canadian build the host-compiler is used when
   427         # actually the build-system compiler is required. Choose the correct
   428         # compilers for canadian build and use the defaults on other
   429         # configurations.
   430         if [ "${CT_BARE_METAL},${CT_CANADIAN}" = "y,y" ]; then
   431             repair_cc="CC_FOR_BUILD=${CT_BUILD}-gcc \
   432                        GCC_FOR_TARGET=${CT_TARGET}-gcc"
   433         else
   434             repair_cc=""
   435         fi
   436 
   437         CT_DoExecLog ALL make ${JOBSFLAGS} -C gcc ${libgcc_rule} \
   438                               ${repair_cc}
   439         sed -r -i -e 's@-lc@@g' gcc/${libgcc_rule}
   440     else # build_libgcc
   441         core_targets=( gcc )
   442     fi   # ! build libgcc
   443     if [    "${build_libstdcxx}" = "yes"    \
   444          -a "${CT_CC_LANG_CXX}"  = "y"      \
   445        ]; then
   446         core_targets+=( target-libstdc++-v3 )
   447     fi
   448 
   449     CT_DoLog EXTRA "Building ${mode} core C compiler"
   450     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/all-}"
   451 
   452     CT_DoLog EXTRA "Installing ${mode} core C compiler"
   453     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/install-}"
   454 
   455     if [ "${CT_BUILD_MANUALS}" = "y" -a "${build_manuals}" = "yes" ]; then
   456         CT_DoLog EXTRA "Building the GCC manuals"
   457         CT_DoExecLog ALL make pdf html
   458         CT_DoLog EXTRA "Installing the GCC manuals"
   459         CT_DoExecLog ALL make install-{pdf,html}-gcc
   460     fi
   461 
   462     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   463     # to call the C compiler with the same, somewhat canonical name.
   464     # check whether compiler has an extension
   465     file="$( ls -1 "${prefix}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   466     [ -z "${file}" ] || ext=".${file##*.}"
   467     CT_DoExecLog ALL ln -sfv "${CT_TARGET}-gcc${ext}" "${prefix}/bin/${CT_TARGET}-cc${ext}"
   468 
   469     if [ "${CT_MULTILIB}" = "y" ]; then
   470         multilibs=( $( "${core_prefix_dir}/bin/${CT_TARGET}-gcc" -print-multi-lib   \
   471                        |tail -n +2 ) )
   472         if [ ${#multilibs[@]} -ne 0 ]; then
   473             CT_DoLog EXTRA "gcc configured with these multilibs (besides the default):"
   474             for i in "${multilibs[@]}"; do
   475                 dir="${i%%;*}"
   476                 flags="${i#*;}"
   477                 CT_DoLog EXTRA "   ${flags//@/ -}  -->  ${dir}/"
   478             done
   479         else
   480             CT_DoLog WARN "gcc configured for multilib, but none available"
   481         fi
   482     fi
   483 
   484     CT_EndStep
   485 }
   486 
   487 #------------------------------------------------------------------------------
   488 # Build final gcc
   489 do_cc() {
   490     local -a host_libstdcxx_flags
   491     local -a extra_config
   492     local -a final_LDFLAGS
   493     local tmp
   494 
   495     # If building for bare metal, nothing to be done here, the static core conpiler is enough!
   496     [ "${CT_BARE_METAL}" = "y" ] && return 0
   497 
   498     CT_DoStep INFO "Installing final compiler"
   499 
   500     mkdir -p "${CT_BUILD_DIR}/build-cc"
   501     cd "${CT_BUILD_DIR}/build-cc"
   502 
   503     CT_DoLog EXTRA "Configuring final compiler"
   504 
   505     # Enable selected languages
   506     lang_opt="c"
   507     [ "${CT_CC_LANG_CXX}" = "y"      ] && lang_opt="${lang_opt},c++"
   508     [ "${CT_CC_LANG_FORTRAN}" = "y"  ] && lang_opt="${lang_opt},fortran"
   509     [ "${CT_CC_LANG_ADA}" = "y"      ] && lang_opt="${lang_opt},ada"
   510     [ "${CT_CC_LANG_JAVA}" = "y"     ] && lang_opt="${lang_opt},java"
   511     [ "${CT_CC_LANG_OBJC}" = "y"     ] && lang_opt="${lang_opt},objc"
   512     [ "${CT_CC_LANG_OBJCXX}" = "y"   ] && lang_opt="${lang_opt},obj-c++"
   513     CT_Test "Building ADA language is not yet supported. Will try..." "${CT_CC_LANG_ADA}" = "y"
   514     CT_Test "Building Objective-C language is not yet supported. Will try..." "${CT_CC_LANG_OBJC}" = "y"
   515     CT_Test "Building Objective-C++ language is not yet supported. Will try..." "${CT_CC_LANG_OBJCXX}" = "y"
   516     CT_Test "Building ${CT_CC_LANG_OTHERS//,/ } language(s) is not yet supported. Will try..." -n "${CT_CC_LANG_OTHERS}"
   517     lang_opt=$(echo "${lang_opt},${CT_CC_LANG_OTHERS}" |sed -r -e 's/,+/,/g; s/,*$//;')
   518 
   519     extra_config+=("--enable-languages=${lang_opt}")
   520     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   521         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   522         if [ -n "${tmp}" ]; then
   523             extra_config+=("${tmp}")
   524         fi
   525     done
   526 
   527     [ "${CT_SHARED_LIBS}" = "y" ] || extra_config+=("--disable-shared")
   528     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   529         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   530         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   531     fi
   532     case "${CT_CC_GCC_SJLJ_EXCEPTIONS}" in
   533         y)  extra_config+=("--enable-sjlj-exceptions");;
   534         m)  ;;
   535         "") extra_config+=("--disable-sjlj-exceptions");;
   536     esac
   537     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   538         extra_config+=("--enable-__cxa_atexit")
   539     else
   540         extra_config+=("--disable-__cxa_atexit")
   541     fi
   542     if [ -n "${CT_CC_ENABLE_CXX_FLAGS}" ]; then
   543         extra_config+=("--enable-cxx-flags=${CT_CC_ENABLE_CXX_FLAGS}")
   544     fi
   545     if [ "${CT_CC_GCC_LIBMUDFLAP}" = "y" ]; then
   546         extra_config+=(--enable-libmudflap)
   547     else
   548         extra_config+=(--disable-libmudflap)
   549     fi
   550     if [ "${CT_CC_GCC_LIBGOMP}" = "y" ]; then
   551         extra_config+=(--enable-libgomp)
   552     else
   553         extra_config+=(--disable-libgomp)
   554     fi
   555     if [ "${CT_CC_GCC_LIBSSP}" = "y" ]; then
   556         extra_config+=(--enable-libssp)
   557     else
   558         extra_config+=(--disable-libssp)
   559     fi
   560 
   561     # *** WARNING ! ***
   562     # Keep this full if-else-if-elif-fi-fi block in sync
   563     # with the same block in do_cc_core, above.
   564     if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   565         final_LDFLAGS+=("-static")
   566         host_libstdcxx_flags+=("-static-libgcc")
   567         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   568         host_libstdcxx_flags+=("-lm")
   569         # Companion libraries are build static (eg !shared), so
   570         # the libstdc++ is not pulled automatically, although it
   571         # is needed. Shoe-horn it in our LDFLAGS
   572         # Ditto libm on some Fedora boxen
   573         final_LDFLAGS+=("-lstdc++")
   574         final_LDFLAGS+=("-lm")
   575     else
   576         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   577             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   578             # build script
   579             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   580             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   581             host_libstdcxx_flags+=("-static-libgcc")
   582             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   583             host_libstdcxx_flags+=("-lm")
   584         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   585             # When companion libraries are build static (eg !shared),
   586             # the libstdc++ is not pulled automatically, although it
   587             # is needed. Shoe-horn it in our LDFLAGS
   588             # Ditto libm on some Fedora boxen
   589             final_LDFLAGS+=("-lstdc++")
   590             final_LDFLAGS+=("-lm")
   591         fi
   592     fi
   593 
   594     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   595         extra_config+=("--with-gmp=${CT_COMPLIBS_DIR}")
   596         extra_config+=("--with-mpfr=${CT_COMPLIBS_DIR}")
   597     fi
   598     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   599         extra_config+=("--with-mpc=${CT_COMPLIBS_DIR}")
   600     fi
   601     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   602         extra_config+=("--with-ppl=${CT_COMPLIBS_DIR}")
   603         # With PPL 0.11+, also pull libpwl if needed
   604         if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   605             host_libstdcxx_flags+=("-L${CT_COMPLIBS_DIR}/lib")
   606             host_libstdcxx_flags+=("-lpwl")
   607         fi
   608         extra_config+=("--with-cloog=${CT_COMPLIBS_DIR}")
   609     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   610         extra_config+=("--with-ppl=no")
   611         extra_config+=("--with-cloog=no")
   612     fi
   613     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   614         extra_config+=("--with-libelf=${CT_COMPLIBS_DIR}")
   615     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   616         extra_config+=("--with-libelf=no")
   617     fi
   618 
   619     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   620         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   621     fi
   622 
   623     if [ "${CT_THREADS}" = "none" ]; then
   624         extra_config+=("--disable-threads")
   625         if [ "${CT_CC_GCC_4_2_or_later}" = y ]; then
   626             CT_Test "Disabling libgomp for no-thread gcc>=4.2" "${CT_CC_GCC_LIBGOMP}" = "Y"
   627             extra_config+=("--disable-libgomp")
   628         fi
   629     else
   630         if [ "${CT_THREADS}" = "win32" ]; then
   631             extra_config+=("--enable-threads=win32")
   632             extra_config+=("--disable-win32-registry")
   633         else
   634             extra_config+=("--enable-threads=posix")
   635         fi
   636     fi
   637 
   638     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   639         extra_config+=("--enable-target-optspace")
   640     fi
   641     if [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ]; then
   642         extra_config+=("--disable-libstdcxx-pch")
   643     fi
   644 
   645     case "${CT_CC_GCC_LDBL_128}" in
   646         y)  extra_config+=("--with-long-double-128");;
   647         m)  ;;
   648         "") extra_config+=("--without-long-double-128");;
   649     esac
   650 
   651     if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
   652         extra_config+=( --enable-linker-build-id )
   653     fi
   654 
   655     case "${CT_CC_GCC_LNK_HASH_STYLE}" in
   656         "") ;;
   657         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
   658     esac
   659 
   660     if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
   661         extra_config+=( --enable-plugin )
   662     fi
   663     if [ "${CT_CC_GCC_GOLD}" = "y" ]; then
   664         extra_config+=( --enable-gold )
   665     fi
   666 
   667     case "${CT_ARCH}" in
   668         mips)
   669             case "${CT_CC_GCC_mips_llsc}" in
   670                 y)  extra_config+=( --with-llsc );;
   671                 m)  ;;
   672                 *)  extra_config+=( --without-llsc );;
   673             esac
   674             case "${CT_CC_GCC_mips_synci}" in
   675                 y)  extra_config+=( --with-synci );;
   676                 m)  ;;
   677                 *)  extra_config+=( --without-synci );;
   678             esac
   679             if [ "${CT_CC_GCC_mips_plt}" ]; then
   680                 extra_config+=( --with-mips-plt )
   681             fi
   682             ;; # ARCH is mips
   683     esac
   684 
   685     [ "${CT_TOOLCHAIN_ENABLE_NLS}" != "y" ] && extra_config+=("--disable-nls")
   686 
   687     if [ "${CT_CC_GCC_SYSTEM_ZLIB}" = "y" ]; then
   688         extra_config+=("--with-system-zlib")
   689     fi
   690 
   691     if [ "${CT_MULTILIB}" = "y" ]; then
   692         extra_config+=("--enable-multilib")
   693     else
   694         extra_config+=("--disable-multilib")
   695     fi
   696 
   697     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   698 
   699     CT_DoExecLog CFG                                \
   700     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   701     CFLAGS="${CT_CFLAGS_FOR_HOST}"                  \
   702     LDFLAGS="${final_LDFLAGS[*]}"                   \
   703     CFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"         \
   704     CXXFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"       \
   705     LDFLAGS_FOR_TARGET="${CT_TARGET_LDFLAGS}"       \
   706     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   707         --build=${CT_BUILD}                         \
   708         --host=${CT_HOST}                           \
   709         --target=${CT_TARGET}                       \
   710         --prefix="${CT_PREFIX_DIR}"                 \
   711         ${CC_SYSROOT_ARG}                           \
   712         "${extra_config[@]}"                        \
   713         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   714         --enable-c99                                \
   715         --enable-long-long                          \
   716         "${CT_CC_EXTRA_CONFIG_ARRAY[@]}"
   717 
   718     if [ "${CT_CANADIAN}" = "y" ]; then
   719         CT_DoLog EXTRA "Building libiberty"
   720         CT_DoExecLog ALL make ${JOBSFLAGS} all-build-libiberty
   721     fi
   722 
   723     CT_DoLog EXTRA "Building final compiler"
   724     CT_DoExecLog ALL make ${JOBSFLAGS} all
   725 
   726     CT_DoLog EXTRA "Installing final compiler"
   727     CT_DoExecLog ALL make ${JOBSFLAGS} install
   728 
   729     if [ "${CT_BUILD_MANUALS}" = "y" ]; then
   730         CT_DoLog EXTRA "Building the GCC manuals"
   731         CT_DoExecLog ALL make ${JOBSFLAGS} pdf html
   732         CT_DoLog EXTRA "Installing the GCC manuals"
   733         CT_DoExecLog ALL make install-{pdf,html}-gcc
   734     fi
   735 
   736     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   737     # to call the C compiler with the same, somewhat canonical name.
   738     # check whether compiler has an extension
   739     file="$( ls -1 "${CT_PREFIX_DIR}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   740     [ -z "${file}" ] || ext=".${file##*.}"
   741     CT_DoExecLog ALL ln -sfv "${CT_TARGET}-gcc${ext}" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-cc${ext}"
   742 
   743     if [ "${CT_MULTILIB}" = "y" ]; then
   744         multilibs=( $( "${CT_PREFIX_DIR}/bin/${CT_TARGET}-gcc" -print-multi-lib \
   745                        |tail -n +2 ) )
   746         if [ ${#multilibs[@]} -ne 0 ]; then
   747             CT_DoLog EXTRA "gcc configured with these multilibs (besides the default):"
   748             for i in "${multilibs[@]}"; do
   749                 dir="${i%%;*}"
   750                 flags="${i#*;}"
   751                 CT_DoLog EXTRA "   ${flags//@/ -}  -->  ${dir}/"
   752             done
   753         else
   754             CT_DoLog WARN "gcc configured for multilib, but none available"
   755         fi
   756     fi
   757 
   758     CT_EndStep
   759 }