scripts/build/cc/gcc.sh
author Jongsung Kim <neidhard.kim@lge.com>
Thu May 02 23:31:33 2013 +0000 (2013-05-02)
changeset 3209 33f265e3e79d
parent 3133 36aa2ae92c29
child 3215 4c63ce24fccd
permissions -rw-r--r--
cc/gcc: modify to build gcc-4.8-based cross-tools

Building cross-tool based on gcc-4.8 fails while "Installing
pass-2 core C compiler", because building libgcc.mvars needs
libbacktrace.a that gcc.sh doesn't build. This patch inserts
a few lines configuring, and making libbacktrace into gcc.sh
to build gcc-4.8-based cross-tools successfully.

Reported-by: Plotnikov Dmitry <leitz@ispras.ru>
Signed-off-by: Jongsung Kim <neidhard.kim@lge.com>
Message-Id: <201305031831.33395.neidhard.kim@lge.com>
Patchwork-Id: 241258
     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     if [ "${CT_CC_CUSTOM}" = "y" ]; then
    12         CT_GetCustom "gcc" "${CT_CC_VERSION}" "${CT_CC_CUSTOM_LOCATION}"
    13     else
    14         # Account for the Linaro versioning
    15         linaro_version="$( echo "${CT_CC_VERSION}"      \
    16                            |sed -r -e 's/^linaro-//;'   \
    17                          )"
    18         linaro_series="$( echo "${linaro_version}"      \
    19                           |sed -r -e 's/-.*//;'         \
    20                         )"
    21 
    22         # Ah! gcc folks are kind of 'different': they store the tarballs in
    23         # subdirectories of the same name!
    24         # Arrgghh! Some of those versions does not follow this convention:
    25         # gcc-3.3.3 lives in releases/gcc-3.3.3, while gcc-2.95.* isn't in a
    26         # subdirectory!
    27         CT_GetFile "gcc-${CT_CC_VERSION}"                                                       \
    28                    {ftp,http}://ftp.gnu.org/gnu/gcc{,{,/releases}/gcc-${CT_CC_VERSION}}         \
    29                    ftp://ftp.irisa.fr/pub/mirrors/gcc.gnu.org/gcc/releases/gcc-${CT_CC_VERSION} \
    30                    ftp://ftp.uvsq.fr/pub/gcc/snapshots/${CT_CC_VERSION}                         \
    31                    "${linaro_base_url}/${linaro_series}/${linaro_version}/+download"
    32 
    33     fi # ! custom location
    34     # Starting with GCC 4.3, ecj is used for Java, and will only be
    35     # built if the configure script finds ecj.jar at the top of the
    36     # GCC source tree, which will not be there unless we get it and
    37     # put it there ourselves
    38     if [ "${CT_CC_LANG_JAVA_USE_ECJ}" = "y" ]; then
    39         CT_GetFile ecj-latest .jar ftp://gcc.gnu.org/pub/java   \
    40                                    ftp://sourceware.org/pub/java
    41     fi
    42 }
    43 
    44 # Extract gcc
    45 do_cc_extract() {
    46     # If using custom directory location, nothing to do
    47     if [ "${CT_CC_CUSTOM}" = "y"                    \
    48          -a -d "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}" ]; then
    49         return 0
    50     fi
    51 
    52     CT_Extract "gcc-${CT_CC_VERSION}"
    53     CT_Patch "gcc" "${CT_CC_VERSION}"
    54 
    55     # Copy ecj-latest.jar to ecj.jar at the top of the GCC source tree
    56     if [ "${CT_CC_LANG_JAVA_USE_ECJ}" = "y"                     \
    57          -a ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/ecj.jar"   \
    58        ]; then
    59         CT_DoExecLog ALL cp -v "${CT_TARBALLS_DIR}/ecj-latest.jar" "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/ecj.jar"
    60     fi
    61 }
    62 
    63 #------------------------------------------------------------------------------
    64 # This function builds up the set of languages to enable
    65 # No argument expected, returns the comma-separated language list on stdout
    66 cc_gcc_lang_list() {
    67     local lang_list
    68 
    69     lang_list="c"
    70     [ "${CT_CC_LANG_CXX}" = "y"      ] && lang_list+=",c++"
    71     [ "${CT_CC_LANG_FORTRAN}" = "y"  ] && lang_list+=",fortran"
    72     [ "${CT_CC_LANG_ADA}" = "y"      ] && lang_list+=",ada"
    73     [ "${CT_CC_LANG_JAVA}" = "y"     ] && lang_list+=",java"
    74     [ "${CT_CC_LANG_OBJC}" = "y"     ] && lang_list+=",objc"
    75     [ "${CT_CC_LANG_OBJCXX}" = "y"   ] && lang_list+=",obj-c++"
    76     lang_list+="${CT_CC_LANG_OTHERS:+,${CT_CC_LANG_OTHERS}}"
    77 
    78     printf "%s" "${lang_list}"
    79 }
    80 
    81 #------------------------------------------------------------------------------
    82 # Core gcc pass 1
    83 do_cc_core_pass_1() {
    84     local -a core_opts
    85 
    86     if [ "${CT_CC_CORE_PASSES_NEEDED}" != "y" ]; then
    87         return 0
    88     fi
    89 
    90     core_opts+=( "mode=static" )
    91     core_opts+=( "host=${CT_BUILD}" )
    92     core_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" )
    93     core_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
    94     core_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
    95     core_opts+=( "ldflags=${CT_LDFLAGS_FOR_HOST}" )
    96     core_opts+=( "lang_list=c" )
    97 
    98     CT_DoStep INFO "Installing pass-1 core C compiler"
    99     CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-core-pass-1"
   100 
   101     do_cc_core_backend "${core_opts[@]}"
   102 
   103     CT_Popd
   104     CT_EndStep
   105 }
   106 
   107 # Core gcc pass 2
   108 do_cc_core_pass_2() {
   109     local -a core_opts
   110 
   111     if [ "${CT_CC_CORE_PASSES_NEEDED}" != "y" ]; then
   112         return 0
   113     fi
   114 
   115     # Common options:
   116     core_opts+=( "host=${CT_BUILD}" )
   117     core_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
   118     core_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" )
   119     core_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
   120     core_opts+=( "ldflags=${CT_LDFLAGS_FOR_HOST}" )
   121     core_opts+=( "lang_list=c" )
   122 
   123     # Different conditions are at stake here:
   124     #   - In case the threading model is NPTL, we need a shared-capable core
   125     #     gcc; in all other cases, we need a static-only core gcc.
   126     #   - In case the threading model is NPTL or win32, or gcc is 4.3 or
   127     #     later, we need to build libgcc
   128     case "${CT_THREADS}" in
   129         nptl)
   130             core_opts+=( "mode=shared" )
   131             core_opts+=( "build_libgcc=yes" )
   132             ;;
   133         win32)
   134             core_opts+=( "mode=static" )
   135             core_opts+=( "build_libgcc=yes" )
   136             ;;
   137         *)
   138             core_opts+=( "mode=static" )
   139             if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
   140                 core_opts+=( "build_libgcc=yes" )
   141             fi
   142             ;;
   143     esac
   144 
   145     CT_DoStep INFO "Installing pass-2 core C compiler"
   146     CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-core-pass-2"
   147 
   148     do_cc_core_backend "${core_opts[@]}"
   149 
   150     CT_Popd
   151     CT_EndStep
   152 }
   153 
   154 #------------------------------------------------------------------------------
   155 # Build core gcc
   156 # This function is used to build the core C compiler.
   157 # Usage: do_cc_core_backend param=value [...]
   158 #   Parameter           : Definition                                : Type      : Default
   159 #   mode                : build a 'static', 'shared' or 'baremetal' : string    : (none)
   160 #   host                : the machine the core will run on          : tuple     : (none)
   161 #   prefix              : dir prefix to install into                : dir       : (none)
   162 #   complibs            : dir where complibs are isntalled          : dir       : (none)
   163 #   lang_list           : the list of languages to build            : string    : (empty)
   164 #   build_libgcc        : build libgcc or not                       : bool      : no
   165 #   build_libstdcxx     : build libstdc++ or not                    : bool      : no
   166 #   build_staticlinked  : build statically linked or not            : bool      : no
   167 #   build_manuals       : whether to build manuals or not           : bool      : no
   168 #   cflags              : cflags to use                             : string    : (empty)
   169 #   ldflags             : ldflags to use                            : string    : (empty)
   170 # Usage: do_cc_core_backend mode=[static|shared|baremetal] build_libgcc=[yes|no] build_staticlinked=[yes|no]
   171 do_cc_core_backend() {
   172     local mode
   173     local build_libgcc=no
   174     local build_libstdcxx=no
   175     local build_staticlinked=no
   176     local build_manuals=no
   177     local host
   178     local prefix
   179     local complibs
   180     local lang_list
   181     local cflags
   182     local ldflags
   183     local tmp
   184     local -a host_libstdcxx_flags
   185     local -a extra_config
   186     local -a core_LDFLAGS
   187     local -a core_targets
   188     local arg
   189 
   190     for arg in "$@"; do
   191         eval "${arg// /\\ }"
   192     done
   193 
   194     CT_DoLog EXTRA "Configuring gcc"
   195 
   196     case "${mode}" in
   197         static)
   198             extra_config+=("--with-newlib")
   199             extra_config+=("--enable-threads=no")
   200             extra_config+=("--disable-shared")
   201             copy_headers=y  # For baremetal, as there's no headers to copy,
   202                             # we copy an empty directory. So, who cares?
   203             ;;
   204         shared)
   205             extra_config+=("--enable-shared")
   206             copy_headers=y
   207             ;;
   208         baremetal)
   209             extra_config+=("--with-newlib")
   210             extra_config+=("--enable-threads=no")
   211             extra_config+=("--disable-shared")
   212             copy_headers=n
   213             ;;
   214         *)
   215             CT_Abort "Internal Error: 'mode' must be one of: 'static', 'shared' or 'baremetal', not '${mode:-(empty)}'"
   216             ;;
   217     esac
   218 
   219     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   220         # Bare metal delivers the core compiler as final compiler, so add version info and bugurl
   221         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   222         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   223     fi
   224 
   225     if [ "${copy_headers}" = "y" ]; then
   226         CT_DoLog DEBUG "Copying headers to install area of bootstrap gcc, so it can build libgcc2"
   227         CT_DoExecLog ALL cp -a "${CT_HEADERS_DIR}" "${prefix}/${CT_TARGET}/include"
   228     fi
   229 
   230     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   231         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   232         if [ -n "${tmp}" ]; then
   233             extra_config+=("${tmp}")
   234         fi
   235     done
   236     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   237         extra_config+=("--enable-__cxa_atexit")
   238     else
   239         extra_config+=("--disable-__cxa_atexit")
   240     fi
   241 
   242     core_LDFLAGS+=("${ldflags}")
   243 
   244     # *** WARNING ! ***
   245     # Keep this full if-else-if-elif-fi-fi block in sync
   246     # with the same block in do_cc, below.
   247     if [ "${build_staticlinked}" = "yes" ]; then
   248         core_LDFLAGS+=("-static")
   249         host_libstdcxx_flags+=("-static-libgcc")
   250         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   251         host_libstdcxx_flags+=("-lm")
   252         # Companion libraries are build static (eg !shared), so
   253         # the libstdc++ is not pulled automatically, although it
   254         # is needed. Shoe-horn it in our LDFLAGS
   255         # Ditto libm on some Fedora boxen
   256         core_LDFLAGS+=("-lstdc++")
   257         core_LDFLAGS+=("-lm")
   258     else
   259         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   260             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   261             # build script
   262             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   263             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   264             host_libstdcxx_flags+=("-static-libgcc")
   265             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   266             host_libstdcxx_flags+=("-lm")
   267         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   268             # When companion libraries are build static (eg !shared),
   269             # the libstdc++ is not pulled automatically, although it
   270             # is needed. Shoe-horn it in our LDFLAGS
   271             # Ditto libm on some Fedora boxen
   272             core_LDFLAGS+=("-lstdc++")
   273             core_LDFLAGS+=("-lm")
   274         fi
   275     fi
   276 
   277     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   278         extra_config+=("--with-gmp=${complibs}")
   279         extra_config+=("--with-mpfr=${complibs}")
   280     fi
   281     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   282         extra_config+=("--with-mpc=${complibs}")
   283     fi
   284     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   285         extra_config+=("--with-ppl=${complibs}")
   286         # With PPL 0.11+, also pull libpwl if needed
   287         if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   288             host_libstdcxx_flags+=("-L${complibs}/lib")
   289             host_libstdcxx_flags+=("-lpwl")
   290         fi
   291         extra_config+=("--with-cloog=${complibs}")
   292     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   293         extra_config+=("--with-ppl=no")
   294         extra_config+=("--with-cloog=no")
   295     fi
   296     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   297         extra_config+=("--with-libelf=${complibs}")
   298         extra_config+=("--enable-lto")
   299     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   300         extra_config+=("--with-libelf=no")
   301         extra_config+=("--disable-lto")
   302     fi
   303 
   304     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   305         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   306     fi
   307 
   308     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   309         extra_config+=("--enable-target-optspace")
   310     fi
   311 
   312     case "${CT_CC_GCC_LDBL_128}" in
   313         y)  extra_config+=("--with-long-double-128");;
   314         m)  ;;
   315         "") extra_config+=("--without-long-double-128");;
   316     esac
   317 
   318     if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
   319         extra_config+=( --enable-linker-build-id )
   320     fi
   321 
   322     case "${CT_CC_GCC_LNK_HASH_STYLE}" in
   323         "") ;;
   324         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
   325     esac
   326 
   327     case "${CT_ARCH}" in
   328         mips)
   329             case "${CT_CC_GCC_mips_llsc}" in
   330                 y)  extra_config+=( --with-llsc );;
   331                 m)  ;;
   332                 *)  extra_config+=( --without-llsc );;
   333             esac
   334             case "${CT_CC_GCC_mips_synci}" in
   335                 y)  extra_config+=( --with-synci );;
   336                 m)  ;;
   337                 *)  extra_config+=( --without-synci );;
   338             esac
   339             if [ "${CT_CC_GCC_mips_plt}" ]; then
   340                 extra_config+=( --with-mips-plt )
   341             fi
   342             ;; # ARCH is mips
   343     esac
   344 
   345     extra_config+=(--disable-libgomp)
   346     extra_config+=(--disable-libmudflap)
   347 
   348     [ "${CT_TOOLCHAIN_ENABLE_NLS}" != "y" ] && extra_config+=("--disable-nls")
   349 
   350     [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ] && extra_config+=("--disable-libstdcxx-pch")
   351 
   352     if [ "${CT_CC_GCC_SYSTEM_ZLIB}" = "y" ]; then
   353         extra_config+=("--with-system-zlib")
   354     fi
   355 
   356     if [ "${CT_MULTILIB}" = "y" ]; then
   357         extra_config+=("--enable-multilib")
   358     else
   359         extra_config+=("--disable-multilib")
   360     fi
   361 
   362     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   363 
   364     # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
   365     CT_DoExecLog CFG                                \
   366     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   367     CFLAGS="${cflags}"                              \
   368     LDFLAGS="${core_LDFLAGS[*]}"                    \
   369     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   370         --build=${CT_BUILD}                         \
   371         --host=${host}                              \
   372         --target=${CT_TARGET}                       \
   373         --prefix="${prefix}"                        \
   374         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   375         --disable-libmudflap                        \
   376         ${CC_CORE_SYSROOT_ARG}                      \
   377         "${extra_config[@]}"                        \
   378         --enable-languages="${lang_list}"           \
   379         "${CT_CC_CORE_EXTRA_CONFIG_ARRAY[@]}"
   380 
   381     if [ "${build_libgcc}" = "yes" ]; then
   382         # HACK: we need to override SHLIB_LC from gcc/config/t-slibgcc-elf-ver or
   383         # gcc/config/t-libunwind so -lc is removed from the link for
   384         # libgcc_s.so, as we do not have a target -lc yet.
   385         # This is not as ugly as it appears to be ;-) All symbols get resolved
   386         # during the glibc build, and we provide a proper libgcc_s.so for the
   387         # cross toolchain during the final gcc build.
   388         #
   389         # As we cannot modify the source tree, nor override SHLIB_LC itself
   390         # during configure or make, we have to edit the resultant
   391         # gcc/libgcc.mk itself to remove -lc from the link.
   392         # This causes us to have to jump through some hoops...
   393         #
   394         # To produce libgcc.mk to edit we firstly require libiberty.a,
   395         # so we configure then build it.
   396         # Next we have to configure gcc, create libgcc.mk then edit it...
   397         # So much easier if we just edit the source tree, but hey...
   398         if [ ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/gcc/BASE-VER" ]; then
   399             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libiberty
   400             CT_DoExecLog ALL make ${JOBSFLAGS} -C libiberty libiberty.a
   401             CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp
   402             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp
   403         else
   404             CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp configure-build-libiberty
   405             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp all-build-libiberty
   406         fi
   407         # HACK: gcc-4.2 uses libdecnumber to build libgcc.mk, so build it here.
   408         if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/libdecnumber" ]; then
   409             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libdecnumber
   410             CT_DoExecLog ALL make ${JOBSFLAGS} -C libdecnumber libdecnumber.a
   411         fi
   412         # HACK: gcc-4.8 uses libbacktrace to make libgcc.mvars, so make it here.
   413         if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/libbacktrace" ]; then
   414             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libbacktrace
   415             CT_DoExecLog ALL make ${JOBSFLAGS} -C libbacktrace
   416         fi
   417 
   418         # Starting with GCC 4.3, libgcc.mk is no longer built,
   419         # and libgcc.mvars is used instead.
   420 
   421         if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
   422             libgcc_rule="libgcc.mvars"
   423             core_targets=( gcc target-libgcc )
   424         else
   425             libgcc_rule="libgcc.mk"
   426             core_targets=( gcc )
   427         fi
   428 
   429         # On bare metal and canadian build the host-compiler is used when
   430         # actually the build-system compiler is required. Choose the correct
   431         # compilers for canadian build and use the defaults on other
   432         # configurations.
   433         if [ "${CT_BARE_METAL},${CT_CANADIAN}" = "y,y" ]; then
   434             repair_cc="CC_FOR_BUILD=${CT_BUILD}-gcc \
   435                        GCC_FOR_TARGET=${CT_TARGET}-gcc"
   436         else
   437             repair_cc=""
   438         fi
   439 
   440         CT_DoExecLog ALL make ${JOBSFLAGS} -C gcc ${libgcc_rule} \
   441                               ${repair_cc}
   442         sed -r -i -e 's@-lc@@g' gcc/${libgcc_rule}
   443     else # build_libgcc
   444         core_targets=( gcc )
   445     fi   # ! build libgcc
   446     if [    "${build_libstdcxx}" = "yes"    \
   447          -a "${CT_CC_LANG_CXX}"  = "y"      \
   448        ]; then
   449         core_targets+=( target-libstdc++-v3 )
   450     fi
   451 
   452     CT_DoLog EXTRA "Building gcc"
   453     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/all-}"
   454 
   455     CT_DoLog EXTRA "Installing gcc"
   456     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/install-}"
   457 
   458     if [ "${build_manuals}" = "yes" ]; then
   459         CT_DoLog EXTRA "Building the GCC manuals"
   460         CT_DoExecLog ALL make pdf html
   461         CT_DoLog EXTRA "Installing the GCC manuals"
   462         CT_DoExecLog ALL make install-{pdf,html}-gcc
   463     fi
   464 
   465     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   466     # to call the C compiler with the same, somewhat canonical name.
   467     # check whether compiler has an extension
   468     file="$( ls -1 "${prefix}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   469     [ -z "${file}" ] || ext=".${file##*.}"
   470     CT_DoExecLog ALL ln -sfv "${CT_TARGET}-gcc${ext}" "${prefix}/bin/${CT_TARGET}-cc${ext}"
   471 
   472     if [ "${CT_MULTILIB}" = "y" ]; then
   473         if [ "${CT_CANADIAN}" = "y" -a "${mode}" = "baremetal" \
   474              -a "${host}" = "${CT_HOST}" ]; then
   475             CT_DoLog WARN "Canadian Cross unable to confirm multilibs configured correctly"
   476         else
   477             multilibs=( $( "${prefix}/bin/${CT_TARGET}-gcc" -print-multi-lib   \
   478                            |tail -n +2 ) )
   479             if [ ${#multilibs[@]} -ne 0 ]; then
   480                 CT_DoLog EXTRA "gcc configured with these multilibs (besides the default):"
   481                 for i in "${multilibs[@]}"; do
   482                     dir="${i%%;*}"
   483                     flags="${i#*;}"
   484                     CT_DoLog EXTRA "   ${flags//@/ -}  -->  ${dir}/"
   485                 done
   486             else
   487                 CT_DoLog WARN "gcc configured for multilib, but none available"
   488            fi
   489         fi
   490     fi
   491 }
   492 
   493 #------------------------------------------------------------------------------
   494 # Build complete gcc to run on build
   495 do_cc_for_build() {
   496     local -a build_final_opts
   497     local build_final_backend
   498 
   499     # In case we're canadian or cross-native, it seems that a
   500     # real, complete compiler is needed?!? WTF? Sigh...
   501     # Otherwise, there is nothing to do.
   502     case "${CT_TOOLCHAIN_TYPE}" in
   503         native|cross)   return 0;;
   504     esac
   505 
   506     build_final_opts+=( "host=${CT_BUILD}" )
   507     build_final_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
   508     build_final_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" )
   509     build_final_opts+=( "lang_list=$( cc_gcc_lang_list )" )
   510     if [ "${CT_BARE_METAL}" = "y" ]; then
   511         # In the tests I've done, bare-metal was not impacted by the
   512         # lack of such a compiler, but better safe than sorry...
   513         build_final_opts+=( "mode=baremetal" )
   514         build_final_opts+=( "build_libgcc=yes" )
   515         build_final_opts+=( "build_libstdcxx=yes" )
   516         if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   517             build_final_opts+=( "build_staticlinked=yes" )
   518         fi
   519         build_final_backend=do_cc_core_backend
   520     else
   521         build_final_backend=do_cc_backend
   522     fi
   523 
   524     CT_DoStep INFO "Installing final compiler for build"
   525     CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-final-build-${CT_BUILD}"
   526 
   527     "${build_final_backend}" "${build_final_opts[@]}"
   528 
   529     CT_Popd
   530     CT_EndStep
   531 }
   532 
   533 #------------------------------------------------------------------------------
   534 # Build final gcc to run on host
   535 do_cc_for_host() {
   536     local -a final_opts
   537     local final_backend
   538 
   539     final_opts+=( "host=${CT_HOST}" )
   540     final_opts+=( "prefix=${CT_PREFIX_DIR}" )
   541     final_opts+=( "complibs=${CT_HOST_COMPLIBS_DIR}" )
   542     final_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
   543     final_opts+=( "ldflags=${CT_LDFLAGS_FOR_HOST}" )
   544     final_opts+=( "lang_list=$( cc_gcc_lang_list )" )
   545     if [ "${CT_BUILD_MANUALS}" = "y" ]; then
   546         final_opts+=( "build_manuals=yes" )
   547     fi
   548     if [ "${CT_BARE_METAL}" = "y" ]; then
   549         final_opts+=( "mode=baremetal" )
   550         final_opts+=( "build_libgcc=yes" )
   551         final_opts+=( "build_libstdcxx=yes" )
   552         if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   553             final_opts+=( "build_staticlinked=yes" )
   554         fi
   555         final_backend=do_cc_core_backend
   556     else
   557         final_backend=do_cc_backend
   558     fi
   559 
   560     CT_DoStep INFO "Installing final compiler"
   561     CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-final"
   562 
   563     "${final_backend}" "${final_opts[@]}"
   564 
   565     CT_Popd
   566     CT_EndStep
   567 }
   568 
   569 #------------------------------------------------------------------------------
   570 # Build the final gcc
   571 # Usage: do_cc_backend param=value [...]
   572 #   Parameter     : Definition                          : Type      : Default
   573 #   host          : the host we run onto                : tuple     : (none)
   574 #   prefix        : the runtime prefix                  : dir       : (none)
   575 #   complibs      : the companion libraries prefix      : dir       : (none)
   576 #   cflags        : cflags to use                       : string    : (empty)
   577 #   ldflags       : ldflags to use                      : string    : (empty)
   578 #   lang_list     : the list of languages to build      : string    : (empty)
   579 #   build_manuals : whether to build manuals or not     : bool      : no
   580 do_cc_backend() {
   581     local host
   582     local prefix
   583     local complibs
   584     local cflags
   585     local ldflags
   586     local lang_list
   587     local build_manuals
   588     local -a host_libstdcxx_flags
   589     local -a extra_config
   590     local -a final_LDFLAGS
   591     local tmp
   592     local arg
   593 
   594     for arg in "$@"; do
   595         eval "${arg// /\\ }"
   596     done
   597 
   598     CT_DoLog EXTRA "Configuring gcc"
   599 
   600     # Enable selected languages
   601     extra_config+=("--enable-languages=${lang_list}")
   602 
   603     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   604         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   605         if [ -n "${tmp}" ]; then
   606             extra_config+=("${tmp}")
   607         fi
   608     done
   609 
   610     [ "${CT_SHARED_LIBS}" = "y" ] || extra_config+=("--disable-shared")
   611     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   612         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   613         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   614     fi
   615     case "${CT_CC_GCC_SJLJ_EXCEPTIONS}" in
   616         y)  extra_config+=("--enable-sjlj-exceptions");;
   617         m)  ;;
   618         "") extra_config+=("--disable-sjlj-exceptions");;
   619     esac
   620     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   621         extra_config+=("--enable-__cxa_atexit")
   622     else
   623         extra_config+=("--disable-__cxa_atexit")
   624     fi
   625     if [ -n "${CT_CC_ENABLE_CXX_FLAGS}" ]; then
   626         extra_config+=("--enable-cxx-flags=${CT_CC_ENABLE_CXX_FLAGS}")
   627     fi
   628     if [ "${CT_CC_GCC_LIBMUDFLAP}" = "y" ]; then
   629         extra_config+=(--enable-libmudflap)
   630     else
   631         extra_config+=(--disable-libmudflap)
   632     fi
   633     if [ "${CT_CC_GCC_LIBGOMP}" = "y" ]; then
   634         extra_config+=(--enable-libgomp)
   635     else
   636         extra_config+=(--disable-libgomp)
   637     fi
   638     if [ "${CT_CC_GCC_LIBSSP}" = "y" ]; then
   639         extra_config+=(--enable-libssp)
   640     else
   641         extra_config+=(--disable-libssp)
   642     fi
   643     if [ "${CT_CC_GCC_HAS_LIBQUADMATH}" = "y" ]; then
   644         if [ "${CT_CC_GCC_LIBQUADMATH}" = "y" ]; then
   645             extra_config+=(--enable-libquadmath)
   646             extra_config+=(--enable-libquadmath-support)
   647         else
   648             extra_config+=(--disable-libquadmath)
   649             extra_config+=(--disable-libquadmath-support)
   650         fi
   651     fi
   652 
   653     final_LDFLAGS+=("${ldflags}")
   654 
   655     # *** WARNING ! ***
   656     # Keep this full if-else-if-elif-fi-fi block in sync
   657     # with the same block in do_cc_core, above.
   658     if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   659         final_LDFLAGS+=("-static")
   660         host_libstdcxx_flags+=("-static-libgcc")
   661         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   662         host_libstdcxx_flags+=("-lm")
   663         # Companion libraries are build static (eg !shared), so
   664         # the libstdc++ is not pulled automatically, although it
   665         # is needed. Shoe-horn it in our LDFLAGS
   666         # Ditto libm on some Fedora boxen
   667         final_LDFLAGS+=("-lstdc++")
   668         final_LDFLAGS+=("-lm")
   669     else
   670         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   671             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   672             # build script
   673             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   674             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   675             host_libstdcxx_flags+=("-static-libgcc")
   676             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   677             host_libstdcxx_flags+=("-lm")
   678         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   679             # When companion libraries are build static (eg !shared),
   680             # the libstdc++ is not pulled automatically, although it
   681             # is needed. Shoe-horn it in our LDFLAGS
   682             # Ditto libm on some Fedora boxen
   683             final_LDFLAGS+=("-lstdc++")
   684             final_LDFLAGS+=("-lm")
   685         fi
   686     fi
   687 
   688     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   689         extra_config+=("--with-gmp=${complibs}")
   690         extra_config+=("--with-mpfr=${complibs}")
   691     fi
   692     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   693         extra_config+=("--with-mpc=${complibs}")
   694     fi
   695     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   696         extra_config+=("--with-ppl=${complibs}")
   697         # With PPL 0.11+, also pull libpwl if needed
   698         if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   699             host_libstdcxx_flags+=("-L${complibs}/lib")
   700             host_libstdcxx_flags+=("-lpwl")
   701         fi
   702         extra_config+=("--with-cloog=${complibs}")
   703     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   704         extra_config+=("--with-ppl=no")
   705         extra_config+=("--with-cloog=no")
   706     fi
   707     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   708         extra_config+=("--with-libelf=${complibs}")
   709     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   710         extra_config+=("--with-libelf=no")
   711     fi
   712 
   713     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   714         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   715     fi
   716 
   717     if [ "${CT_THREADS}" = "none" ]; then
   718         extra_config+=("--disable-threads")
   719         if [ "${CT_CC_GCC_4_2_or_later}" = y ]; then
   720             CT_Test "Disabling libgomp for no-thread gcc>=4.2" "${CT_CC_GCC_LIBGOMP}" = "Y"
   721             extra_config+=("--disable-libgomp")
   722         fi
   723     else
   724         if [ "${CT_THREADS}" = "win32" ]; then
   725             extra_config+=("--enable-threads=win32")
   726             extra_config+=("--disable-win32-registry")
   727         else
   728             extra_config+=("--enable-threads=posix")
   729         fi
   730     fi
   731 
   732     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   733         extra_config+=("--enable-target-optspace")
   734     fi
   735     if [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ]; then
   736         extra_config+=("--disable-libstdcxx-pch")
   737     fi
   738 
   739     case "${CT_CC_GCC_LDBL_128}" in
   740         y)  extra_config+=("--with-long-double-128");;
   741         m)  ;;
   742         "") extra_config+=("--without-long-double-128");;
   743     esac
   744 
   745     if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
   746         extra_config+=( --enable-linker-build-id )
   747     fi
   748 
   749     case "${CT_CC_GCC_LNK_HASH_STYLE}" in
   750         "") ;;
   751         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
   752     esac
   753 
   754     if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
   755         extra_config+=( --enable-plugin )
   756     fi
   757     if [ "${CT_CC_GCC_GOLD}" = "y" ]; then
   758         extra_config+=( --enable-gold )
   759     fi
   760 
   761     case "${CT_ARCH}" in
   762         mips)
   763             case "${CT_CC_GCC_mips_llsc}" in
   764                 y)  extra_config+=( --with-llsc );;
   765                 m)  ;;
   766                 *)  extra_config+=( --without-llsc );;
   767             esac
   768             case "${CT_CC_GCC_mips_synci}" in
   769                 y)  extra_config+=( --with-synci );;
   770                 m)  ;;
   771                 *)  extra_config+=( --without-synci );;
   772             esac
   773             if [ "${CT_CC_GCC_mips_plt}" ]; then
   774                 extra_config+=( --with-mips-plt )
   775             fi
   776             ;; # ARCH is mips
   777     esac
   778 
   779     [ "${CT_TOOLCHAIN_ENABLE_NLS}" != "y" ] && extra_config+=("--disable-nls")
   780 
   781     if [ "${CT_CC_GCC_SYSTEM_ZLIB}" = "y" ]; then
   782         extra_config+=("--with-system-zlib")
   783     fi
   784 
   785     if [ "${CT_MULTILIB}" = "y" ]; then
   786         extra_config+=("--enable-multilib")
   787     else
   788         extra_config+=("--disable-multilib")
   789     fi
   790 
   791     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   792 
   793     CT_DoExecLog CFG                                \
   794     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   795     CFLAGS="${cflags}"                              \
   796     LDFLAGS="${final_LDFLAGS[*]}"                   \
   797     CFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"         \
   798     CXXFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"       \
   799     LDFLAGS_FOR_TARGET="${CT_TARGET_LDFLAGS}"       \
   800     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   801         --build=${CT_BUILD}                         \
   802         --host=${host}                              \
   803         --target=${CT_TARGET}                       \
   804         --prefix="${prefix}"                        \
   805         ${CC_SYSROOT_ARG}                           \
   806         "${extra_config[@]}"                        \
   807         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   808         --enable-c99                                \
   809         --enable-long-long                          \
   810         "${CT_CC_EXTRA_CONFIG_ARRAY[@]}"
   811 
   812     if [ "${CT_CANADIAN}" = "y" ]; then
   813         CT_DoLog EXTRA "Building libiberty"
   814         CT_DoExecLog ALL make ${JOBSFLAGS} all-build-libiberty
   815     fi
   816 
   817     CT_DoLog EXTRA "Building gcc"
   818     CT_DoExecLog ALL make ${JOBSFLAGS} all
   819 
   820     CT_DoLog EXTRA "Installing gcc"
   821     CT_DoExecLog ALL make ${JOBSFLAGS} install
   822 
   823     if [ "${build_manuals}" = "yes" ]; then
   824         CT_DoLog EXTRA "Building the GCC manuals"
   825         CT_DoExecLog ALL make pdf html
   826         CT_DoLog EXTRA "Installing the GCC manuals"
   827         CT_DoExecLog ALL make install-{pdf,html}-gcc
   828     fi
   829 
   830     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   831     # to call the C compiler with the same, somewhat canonical name.
   832     # check whether compiler has an extension
   833     file="$( ls -1 "${CT_PREFIX_DIR}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   834     [ -z "${file}" ] || ext=".${file##*.}"
   835     CT_DoExecLog ALL ln -sfv "${CT_TARGET}-gcc${ext}" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-cc${ext}"
   836 
   837     if [ "${CT_MULTILIB}" = "y" ]; then
   838         if [ "${CT_CANADIAN}" = "y" ]; then
   839             CT_DoLog WARN "Canadian Cross unable to confirm multilibs configured correctly"
   840         else
   841             multilibs=( $( "${prefix}/bin/${CT_TARGET}-gcc" -print-multi-lib \
   842                            |tail -n +2 ) )
   843             if [ ${#multilibs[@]} -ne 0 ]; then
   844                 CT_DoLog EXTRA "gcc configured with these multilibs (besides the default):"
   845                 for i in "${multilibs[@]}"; do
   846                     dir="${i%%;*}"
   847                     flags="${i#*;}"
   848                     CT_DoLog EXTRA "   ${flags//@/ -}  -->  ${dir}/"
   849                 done
   850             else
   851                 CT_DoLog WARN "gcc configured for multilib, but none available"
   852             fi
   853         fi
   854     fi
   855 }