scripts/build/cc/gcc.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Jun 28 23:46:04 2011 +0200 (2011-06-28)
changeset 2519 b24ead1a5947
parent 2503 b5541f296b92
child 2521 9cfca603f892
permissions -rw-r--r--
cc/gcc: remove --enable-symver option

That option is coming from the original crosstool, and is not entirely
understand here.

Moreover, it breaks with newer gcc-s: 4.6.1 now breaks while configuring
libjava (and probably some other libs as well, untested).

There is an related bug report to the gcc BZ:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49555

If need be, the old behavior can be restored with:
CC_CORE_EXTRA_CONFIG_ARRAY="--enable-symver=gnu"
CC_EXTRA_CONFIG_ARRAY="--enable-symver=gnu"

Reported-by: Bryan Hundven <bryanhundven@gmail.com>
Reviewed-by: Bryan Hundven <bryanhundven@gmail.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
     1 # This file adds the function to build the gcc C compiler
     2 # Copyright 2007 Yann E. MORIN
     3 # Licensed under the GPL v2. See COPYING in the root of this package
     4 
     5 # Download gcc
     6 do_cc_get() {
     7     local linaro_version
     8     local linaro_series
     9     local linaro_base_url="http://launchpad.net/gcc-linaro"
    10 
    11 
    12     # Account for the Linaro versioning
    13     linaro_version="$( echo "${CT_CC_VERSION}"      \
    14                        |sed -r -e 's/^linaro-//;'   \
    15                      )"
    16     linaro_series="$( echo "${linaro_version}"      \
    17                       |sed -r -e 's/-.*//;'         \
    18                     )"
    19 
    20     # Ah! gcc folks are kind of 'different': they store the tarballs in
    21     # subdirectories of the same name! That's because gcc is such /crap/ that
    22     # it is such /big/ that it needs being splitted for distribution! Sad. :-(
    23     # Arrgghh! Some of those versions does not follow this convention:
    24     # gcc-3.3.3 lives in releases/gcc-3.3.3, while gcc-2.95.* isn't in a
    25     # subdirectory! You bastard!
    26     CT_GetFile "gcc-${CT_CC_VERSION}"                                                       \
    27                {ftp,http}://ftp.gnu.org/gnu/gcc{,{,/releases}/gcc-${CT_CC_VERSION}}         \
    28                ftp://ftp.irisa.fr/pub/mirrors/gcc.gnu.org/gcc/releases/gcc-${CT_CC_VERSION} \
    29                ftp://ftp.uvsq.fr/pub/gcc/snapshots/${CT_CC_VERSION}                         \
    30                "${linaro_base_url}/${linaro_series}/${linaro_version}/+download"
    31 
    32     # Starting with GCC 4.3, ecj is used for Java, and will only be
    33     # built if the configure script finds ecj.jar at the top of the
    34     # GCC source tree, which will not be there unless we get it and
    35     # put it there ourselves
    36     if [ "${CT_CC_LANG_JAVA_USE_ECJ}" = "y" ]; then
    37         CT_GetFile ecj-latest .jar ftp://gcc.gnu.org/pub/java   \
    38                                    ftp://sourceware.org/pub/java
    39     fi
    40 }
    41 
    42 # Extract gcc
    43 do_cc_extract() {
    44     CT_Extract "gcc-${CT_CC_VERSION}"
    45     CT_Patch "gcc" "${CT_CC_VERSION}"
    46 
    47     # Copy ecj-latest.jar to ecj.jar at the top of the GCC source tree
    48     if [ "${CT_CC_LANG_JAVA_USE_ECJ}" = "y"                     \
    49          -a ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/ecj.jar"   \
    50        ]; then
    51         CT_DoExecLog ALL cp -v "${CT_TARBALLS_DIR}/ecj-latest.jar" "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/ecj.jar"
    52     fi
    53 }
    54 
    55 #------------------------------------------------------------------------------
    56 # Core gcc pass 1
    57 do_cc_core_pass_1() {
    58     # If we're building for bare metal, build the static core gcc,
    59     # with libgcc.
    60     # In case we're not bare metal and building a canadian compiler, do nothing
    61     # In case we're not bare metal, and we're NPTL, build the static core gcc.
    62     # In any other case, do nothing.
    63     case "${CT_BARE_METAL},${CT_CANADIAN},${CT_THREADS}" in
    64         y,*,*)  do_cc_core mode=static;;
    65         ,y,*)   ;;
    66         ,,nptl) do_cc_core mode=static;;
    67         *)      ;;
    68     esac
    69 }
    70 
    71 # Core gcc pass 2
    72 do_cc_core_pass_2() {
    73     # In case we're building for bare metal, do nothing, we already have
    74     # our compiler.
    75     # In case we're not bare metal and building a canadian compiler, do nothing
    76     # In case we're NPTL, build the shared core gcc and the target libgcc.
    77     # In any other case, build the static core gcc and, if using gcc-4.3+,
    78     # also build the target libgcc.
    79     case "${CT_BARE_METAL},${CT_CANADIAN},${CT_THREADS}" in
    80         y,*,*)
    81             if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
    82                 do_cc_core mode=baremetal build_libgcc=yes build_libstdcxx=yes build_staticlinked=yes
    83             else
    84                 do_cc_core mode=baremetal build_libgcc=yes build_libstdcxx=yes
    85             fi
    86             ;;
    87         ,y,*)   ;;
    88         ,,nptl)
    89             do_cc_core mode=shared build_libgcc=yes
    90             ;;
    91         ,,win32)
    92             do_cc_core mode=static build_libgcc=yes
    93             ;;
    94         *)  if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
    95                 do_cc_core mode=static build_libgcc=yes
    96             else
    97                 do_cc_core mode=static
    98             fi
    99             ;;
   100     esac
   101 }
   102 
   103 #------------------------------------------------------------------------------
   104 # Build core gcc
   105 # This function is used to build both the static and the shared core C conpiler,
   106 # with or without the target libgcc. We need to know wether:
   107 #  - we're building static, shared or bare metal: mode=[static|shared|baremetal]
   108 #  - we need to build libgcc or not             : build_libgcc=[yes|no]       (default: no)
   109 #  - we need to build libstdc++ or not          : build_libstdcxx=[yes|no]    (default: no)
   110 #  - we need to build statically linked or not  : build_staticlinked=[yes|no] (default: no)
   111 # Usage: do_cc_core mode=[static|shared|baremetal] build_libgcc=[yes|no] build_staticlinked=[yes|no]
   112 do_cc_core() {
   113     local mode
   114     local build_libgcc=no
   115     local build_libstdcxx=no
   116     local build_staticlinked=no
   117     local core_prefix_dir
   118     local lang_opt
   119     local tmp
   120     local -a host_libstdcxx_flags
   121     local -a extra_config
   122     local -a core_LDFLAGS
   123     local -a core_targets
   124 
   125     while [ $# -ne 0 ]; do
   126         eval "${1}"
   127         shift
   128     done
   129 
   130     lang_opt=c
   131     case "${mode}" in
   132         static)
   133             core_prefix_dir="${CT_CC_CORE_STATIC_PREFIX_DIR}"
   134             extra_config+=("--with-newlib")
   135             extra_config+=("--enable-threads=no")
   136             extra_config+=("--disable-shared")
   137             copy_headers=y  # For baremetal, as there's no headers to copy,
   138                             # we copy an empty directory. So, who cares?
   139             ;;
   140         shared)
   141             core_prefix_dir="${CT_CC_CORE_SHARED_PREFIX_DIR}"
   142             extra_config+=("--enable-shared")
   143             copy_headers=y
   144             ;;
   145         baremetal)
   146             core_prefix_dir="${CT_PREFIX_DIR}"
   147             extra_config+=("--with-newlib")
   148             extra_config+=("--enable-threads=no")
   149             extra_config+=("--disable-shared")
   150             [ "${CT_CC_LANG_CXX}" = "y" ] && lang_opt="${lang_opt},c++"
   151             copy_headers=n
   152             ;;
   153         *)
   154             CT_Abort "Internal Error: 'mode' must be one of: 'static', 'shared' or 'baremetal', not '${mode:-(empty)}'"
   155             ;;
   156     esac
   157 
   158     CT_DoStep INFO "Installing ${mode} core C compiler"
   159     mkdir -p "${CT_BUILD_DIR}/build-cc-core-${mode}"
   160     cd "${CT_BUILD_DIR}/build-cc-core-${mode}"
   161 
   162     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   163         # Bare metal delivers the core compiler as final compiler, so add version info and bugurl
   164         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   165         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   166     fi
   167 
   168     if [ "${copy_headers}" = "y" ]; then
   169         CT_DoLog DEBUG "Copying headers to install area of bootstrap gcc, so it can build libgcc2"
   170         CT_DoExecLog ALL cp -a "${CT_HEADERS_DIR}" "${core_prefix_dir}/${CT_TARGET}/include"
   171     fi
   172 
   173     CT_DoLog EXTRA "Configuring ${mode} core C compiler"
   174 
   175     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   176         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   177         if [ -n "${tmp}" ]; then
   178             extra_config+=("${tmp}")
   179         fi
   180     done
   181     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   182         extra_config+=("--enable-__cxa_atexit")
   183     else
   184         extra_config+=("--disable-__cxa_atexit")
   185     fi
   186 
   187     # *** WARNING ! ***
   188     # Keep this full if-else-if-elif-fi-fi block in sync
   189     # with the same block in do_cc, below.
   190     if [ "${build_staticlinked}" = "yes" ]; then
   191         core_LDFLAGS+=("-static")
   192         host_libstdcxx_flags+=("-static-libgcc")
   193         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   194         host_libstdcxx_flags+=("-lm")
   195         # Companion libraries are build static (eg !shared), so
   196         # the libstdc++ is not pulled automatically, although it
   197         # is needed. Shoe-horn it in our LDFLAGS
   198         # Ditto libm on some Fedora boxen
   199         core_LDFLAGS+=("-lstdc++")
   200         core_LDFLAGS+=("-lm")
   201     else
   202         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   203             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   204             # build script
   205             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   206             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   207             host_libstdcxx_flags+=("-static-libgcc")
   208             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   209             host_libstdcxx_flags+=("-lm")
   210         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   211             # When companion libraries are build static (eg !shared),
   212             # the libstdc++ is not pulled automatically, although it
   213             # is needed. Shoe-horn it in our LDFLAGS
   214             # Ditto libm on some Fedora boxen
   215             core_LDFLAGS+=("-lstdc++")
   216             core_LDFLAGS+=("-lm")
   217         fi
   218     fi
   219 
   220     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   221         extra_config+=("--with-gmp=${CT_COMPLIBS_DIR}")
   222         extra_config+=("--with-mpfr=${CT_COMPLIBS_DIR}")
   223     fi
   224     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   225         extra_config+=("--with-mpc=${CT_COMPLIBS_DIR}")
   226     fi
   227     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   228         extra_config+=("--with-ppl=${CT_COMPLIBS_DIR}")
   229         # With PPL 0.11+, also pull libpwl if needed
   230         if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   231             host_libstdcxx_flags+=("-L${CT_COMPLIBS_DIR}/lib")
   232             host_libstdcxx_flags+=("-lpwl")
   233         fi
   234         extra_config+=("--with-cloog=${CT_COMPLIBS_DIR}")
   235     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   236         extra_config+=("--with-ppl=no")
   237         extra_config+=("--with-cloog=no")
   238     fi
   239     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   240         extra_config+=("--with-libelf=${CT_COMPLIBS_DIR}")
   241         extra_config+=("--enable-lto")
   242     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   243         extra_config+=("--with-libelf=no")
   244         extra_config+=("--disable-lto")
   245     fi
   246 
   247     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   248         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   249     fi
   250 
   251     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   252         extra_config+=("--enable-target-optspace")
   253     fi
   254 
   255     case "${CT_CC_GCC_LDBL_128}" in
   256         y)  extra_config+=("--with-long-double-128");;
   257         m)  ;;
   258         "") extra_config+=("--without-long-double-128");;
   259     esac
   260 
   261     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   262 
   263     # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
   264     CT_DoExecLog CFG                                \
   265     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   266     CFLAGS="${CT_CFLAGS_FOR_HOST}"                  \
   267     LDFLAGS="${core_LDFLAGS[*]}"                    \
   268     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   269         --build=${CT_BUILD}                         \
   270         --host=${CT_HOST}                           \
   271         --target=${CT_TARGET}                       \
   272         --prefix="${core_prefix_dir}"               \
   273         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   274         --disable-multilib                          \
   275         --disable-libmudflap                        \
   276         ${CC_CORE_SYSROOT_ARG}                      \
   277         "${extra_config[@]}"                        \
   278         --disable-nls                               \
   279         --enable-languages="${lang_opt}"            \
   280         "${CT_CC_CORE_EXTRA_CONFIG_ARRAY[@]}"
   281 
   282     if [ "${build_libgcc}" = "yes" ]; then
   283         # HACK: we need to override SHLIB_LC from gcc/config/t-slibgcc-elf-ver or
   284         # gcc/config/t-libunwind so -lc is removed from the link for
   285         # libgcc_s.so, as we do not have a target -lc yet.
   286         # This is not as ugly as it appears to be ;-) All symbols get resolved
   287         # during the glibc build, and we provide a proper libgcc_s.so for the
   288         # cross toolchain during the final gcc build.
   289         #
   290         # As we cannot modify the source tree, nor override SHLIB_LC itself
   291         # during configure or make, we have to edit the resultant
   292         # gcc/libgcc.mk itself to remove -lc from the link.
   293         # This causes us to have to jump through some hoops...
   294         #
   295         # To produce libgcc.mk to edit we firstly require libiberty.a,
   296         # so we configure then build it.
   297         # Next we have to configure gcc, create libgcc.mk then edit it...
   298         # So much easier if we just edit the source tree, but hey...
   299         if [ ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/gcc/BASE-VER" ]; then
   300             CT_DoExecLog CFG make configure-libiberty
   301             CT_DoExecLog ALL make ${JOBSFLAGS} -C libiberty libiberty.a
   302             CT_DoExecLog CFG make configure-gcc configure-libcpp
   303             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp
   304         else
   305             CT_DoExecLog CFG make configure-gcc configure-libcpp configure-build-libiberty
   306             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp all-build-libiberty
   307         fi
   308         # HACK: gcc-4.2 uses libdecnumber to build libgcc.mk, so build it here.
   309         if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/libdecnumber" ]; then
   310             CT_DoExecLog CFG make configure-libdecnumber
   311             CT_DoExecLog ALL make ${JOBSFLAGS} -C libdecnumber libdecnumber.a
   312         fi
   313 
   314         # Starting with GCC 4.3, libgcc.mk is no longer built,
   315         # and libgcc.mvars is used instead.
   316 
   317         if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
   318             libgcc_rule="libgcc.mvars"
   319             core_targets=( gcc target-libgcc )
   320         else
   321             libgcc_rule="libgcc.mk"
   322             core_targets=( gcc )
   323         fi
   324 
   325         # On bare metal and canadian build the host-compiler is used when
   326         # actually the build-system compiler is required. Choose the correct
   327         # compilers for canadian build and use the defaults on other
   328         # configurations.
   329         if [ "${CT_BARE_METAL},${CT_CANADIAN}" = "y,y" ]; then
   330             repair_cc="CC_FOR_BUILD=${CT_BUILD}-gcc \
   331                        GCC_FOR_TARGET=${CT_TARGET}-gcc"
   332         else
   333             repair_cc=""
   334         fi
   335 
   336         CT_DoExecLog ALL make ${JOBSFLAGS} -C gcc ${libgcc_rule} \
   337                               ${repair_cc}
   338         sed -r -i -e 's@-lc@@g' gcc/${libgcc_rule}
   339     else # build_libgcc
   340         core_targets=( gcc )
   341     fi   # ! build libgcc
   342     if [    "${build_libstdcxx}" = "yes"    \
   343          -a "${CT_CC_LANG_CXX}"  = "y"      \
   344        ]; then
   345         core_targets+=( target-libstdc++-v3 )
   346     fi
   347 
   348     CT_DoLog EXTRA "Building ${mode} core C compiler"
   349     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/all-}"
   350 
   351     CT_DoLog EXTRA "Installing ${mode} core C compiler"
   352     CT_DoExecLog ALL make "${core_targets[@]/#/install-}"
   353 
   354     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   355     # to call the C compiler with the same, somewhat canonical name.
   356     # check whether compiler has an extension
   357     file="$( ls -1 "${core_prefix_dir}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   358     [ -z "${file}" ] || ext=".${file##*.}"
   359     CT_DoExecLog ALL ln -sv "${CT_TARGET}-gcc${ext}" "${core_prefix_dir}/bin/${CT_TARGET}-cc${ext}"
   360 
   361     CT_EndStep
   362 }
   363 
   364 #------------------------------------------------------------------------------
   365 # Build final gcc
   366 do_cc() {
   367     local -a host_libstdcxx_flags
   368     local -a extra_config
   369     local -a final_LDFLAGS
   370     local tmp
   371 
   372     # If building for bare metal, nothing to be done here, the static core conpiler is enough!
   373     [ "${CT_BARE_METAL}" = "y" ] && return 0
   374 
   375     CT_DoStep INFO "Installing final compiler"
   376 
   377     mkdir -p "${CT_BUILD_DIR}/build-cc"
   378     cd "${CT_BUILD_DIR}/build-cc"
   379 
   380     CT_DoLog EXTRA "Configuring final compiler"
   381 
   382     # Enable selected languages
   383     lang_opt="c"
   384     [ "${CT_CC_LANG_CXX}" = "y"      ] && lang_opt="${lang_opt},c++"
   385     [ "${CT_CC_LANG_FORTRAN}" = "y"  ] && lang_opt="${lang_opt},fortran"
   386     [ "${CT_CC_LANG_ADA}" = "y"      ] && lang_opt="${lang_opt},ada"
   387     [ "${CT_CC_LANG_JAVA}" = "y"     ] && lang_opt="${lang_opt},java"
   388     [ "${CT_CC_LANG_OBJC}" = "y"     ] && lang_opt="${lang_opt},objc"
   389     [ "${CT_CC_LANG_OBJCXX}" = "y"   ] && lang_opt="${lang_opt},obj-c++"
   390     CT_Test "Building ADA language is not yet supported. Will try..." "${CT_CC_LANG_ADA}" = "y"
   391     CT_Test "Building Objective-C language is not yet supported. Will try..." "${CT_CC_LANG_OBJC}" = "y"
   392     CT_Test "Building Objective-C++ language is not yet supported. Will try..." "${CT_CC_LANG_OBJCXX}" = "y"
   393     CT_Test "Building ${CT_CC_LANG_OTHERS//,/ } language(s) is not yet supported. Will try..." -n "${CT_CC_LANG_OTHERS}"
   394     lang_opt=$(echo "${lang_opt},${CT_CC_LANG_OTHERS}" |sed -r -e 's/,+/,/g; s/,*$//;')
   395 
   396     extra_config+=("--enable-languages=${lang_opt}")
   397     extra_config+=("--disable-multilib")
   398     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   399         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   400         if [ -n "${tmp}" ]; then
   401             extra_config+=("${tmp}")
   402         fi
   403     done
   404 
   405     [ "${CT_SHARED_LIBS}" = "y" ] || extra_config+=("--disable-shared")
   406     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   407         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   408         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   409     fi
   410     case "${CT_CC_GCC_SJLJ_EXCEPTIONS}" in
   411         y)  extra_config+=("--enable-sjlj-exceptions");;
   412         m)  ;;
   413         "") extra_config+=("--disable-sjlj-exceptions");;
   414     esac
   415     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   416         extra_config+=("--enable-__cxa_atexit")
   417     else
   418         extra_config+=("--disable-__cxa_atexit")
   419     fi
   420     if [ -n "${CT_CC_ENABLE_CXX_FLAGS}" ]; then
   421         extra_config+=("--enable-cxx-flags=${CT_CC_ENABLE_CXX_FLAGS}")
   422     fi
   423     if [ "${CT_CC_GCC_LIBMUDFLAP}" = "y" ]; then
   424         extra_config+=(--enable-libmudflap)
   425     else
   426         extra_config+=(--disable-libmudflap)
   427     fi
   428     if [ "${CT_CC_GCC_LIBGOMP}" = "y" ]; then
   429         extra_config+=(--enable-libgomp)
   430     else
   431         extra_config+=(--disable-libgomp)
   432     fi
   433     if [ "${CT_CC_GCC_LIBSSP}" = "y" ]; then
   434         extra_config+=(--enable-libssp)
   435     else
   436         extra_config+=(--disable-libssp)
   437     fi
   438 
   439     # *** WARNING ! ***
   440     # Keep this full if-else-if-elif-fi-fi block in sync
   441     # with the same block in do_cc_core, above.
   442     if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   443         final_LDFLAGS+=("-static")
   444         host_libstdcxx_flags+=("-static-libgcc")
   445         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   446         host_libstdcxx_flags+=("-lm")
   447         # Companion libraries are build static (eg !shared), so
   448         # the libstdc++ is not pulled automatically, although it
   449         # is needed. Shoe-horn it in our LDFLAGS
   450         # Ditto libm on some Fedora boxen
   451         final_LDFLAGS+=("-lstdc++")
   452         final_LDFLAGS+=("-lm")
   453     else
   454         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   455             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   456             # build script
   457             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   458             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   459             host_libstdcxx_flags+=("-static-libgcc")
   460             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   461             host_libstdcxx_flags+=("-lm")
   462         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   463             # When companion libraries are build static (eg !shared),
   464             # the libstdc++ is not pulled automatically, although it
   465             # is needed. Shoe-horn it in our LDFLAGS
   466             # Ditto libm on some Fedora boxen
   467             final_LDFLAGS+=("-lstdc++")
   468             final_LDFLAGS+=("-lm")
   469         fi
   470     fi
   471 
   472     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   473         extra_config+=("--with-gmp=${CT_COMPLIBS_DIR}")
   474         extra_config+=("--with-mpfr=${CT_COMPLIBS_DIR}")
   475     fi
   476     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   477         extra_config+=("--with-mpc=${CT_COMPLIBS_DIR}")
   478     fi
   479     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   480         extra_config+=("--with-ppl=${CT_COMPLIBS_DIR}")
   481         # With PPL 0.11+, also pull libpwl if needed
   482         if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   483             host_libstdcxx_flags+=("-L${CT_COMPLIBS_DIR}/lib")
   484             host_libstdcxx_flags+=("-lpwl")
   485         fi
   486         extra_config+=("--with-cloog=${CT_COMPLIBS_DIR}")
   487     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   488         extra_config+=("--with-ppl=no")
   489         extra_config+=("--with-cloog=no")
   490     fi
   491     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   492         extra_config+=("--with-libelf=${CT_COMPLIBS_DIR}")
   493     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   494         extra_config+=("--with-libelf=no")
   495     fi
   496 
   497     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   498         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   499     fi
   500 
   501     if [ "${CT_THREADS}" = "none" ]; then
   502         extra_config+=("--disable-threads")
   503         if [ "${CT_CC_GCC_4_2_or_later}" = y ]; then
   504             CT_Test "Disabling libgomp for no-thread gcc>=4.2" "${CT_CC_GCC_LIBGOMP}" = "Y"
   505             extra_config+=("--disable-libgomp")
   506         fi
   507     else
   508         if [ "${CT_THREADS}" = "win32" ]; then
   509             extra_config+=("--enable-threads=win32")
   510             extra_config+=("--disable-win32-registry")
   511         else
   512             extra_config+=("--enable-threads=posix")
   513         fi
   514     fi
   515 
   516     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   517         extra_config+=("--enable-target-optspace")
   518     fi
   519     if [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ]; then
   520         extra_config+=("--disable-libstdcxx-pch")
   521     fi
   522 
   523     case "${CT_CC_GCC_LDBL_128}" in
   524         y)  extra_config+=("--with-long-double-128");;
   525         m)  ;;
   526         "") extra_config+=("--without-long-double-128");;
   527     esac
   528 
   529     if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
   530         extra_config+=( --enable-plugin )
   531     fi
   532     if [ "${CT_CC_GCC_GOLD}" = "y" ]; then
   533         extra_config+=( --enable-gold )
   534     fi
   535 
   536     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   537 
   538     # --disable-nls to work around crash bug on ppc405, but also because
   539     # embedded systems don't really need message catalogs...
   540     CT_DoExecLog CFG                                \
   541     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   542     CFLAGS="${CT_CFLAGS_FOR_HOST}"                  \
   543     LDFLAGS="${final_LDFLAGS[*]}"                   \
   544     CFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"         \
   545     CXXFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"       \
   546     LDFLAGS_FOR_TARGET="${CT_TARGET_LDFLAGS}"       \
   547     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   548         --build=${CT_BUILD}                         \
   549         --host=${CT_HOST}                           \
   550         --target=${CT_TARGET}                       \
   551         --prefix="${CT_PREFIX_DIR}"                 \
   552         ${CC_SYSROOT_ARG}                           \
   553         "${extra_config[@]}"                        \
   554         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   555         --disable-nls                               \
   556         --enable-c99                                \
   557         --enable-long-long                          \
   558         "${CT_CC_EXTRA_CONFIG_ARRAY[@]}"
   559 
   560     if [ "${CT_CANADIAN}" = "y" ]; then
   561         CT_DoLog EXTRA "Building libiberty"
   562         CT_DoExecLog ALL make ${JOBSFLAGS} all-build-libiberty
   563     fi
   564 
   565     CT_DoLog EXTRA "Building final compiler"
   566     CT_DoExecLog ALL make ${JOBSFLAGS} all
   567 
   568     CT_DoLog EXTRA "Installing final compiler"
   569     CT_DoExecLog ALL make install
   570 
   571     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   572     # to call the C compiler with the same, somewhat canonical name.
   573     # check whether compiler has an extension
   574     file="$( ls -1 "${CT_PREFIX_DIR}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   575     [ -z "${file}" ] || ext=".${file##*.}"
   576     CT_DoExecLog ALL ln -sv "${CT_TARGET}-gcc${ext}" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-cc${ext}"
   577 
   578     CT_EndStep
   579 }