scripts/build/cc/gcc.sh
author Daniel Dittmann <ddittmann@gmx.net>
Sat Jan 04 20:16:18 2014 +0100 (2014-01-04)
changeset 3273 c95c1ccf5b77
parent 3271 c65dc9b98841
child 3279 c4b4bb58f639
permissions -rw-r--r--
cc/gcc: set CXXFLAGS at configure gcc

Since gcc 4.8 C++ is also used as implementation language (see gcc
release notes).

Signed-off-by: "Daniel Dittmann" <ddittmann@gmx.net>
Message-Id: <acc7d11bc77b30f21c5b.1388863298@bernalk.machteam>
Patchwork-Id: 306883
     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     [ "${CT_CC_LANG_GOLANG}" = "y"   ] && lang_list+=",go"
    77     lang_list+="${CT_CC_LANG_OTHERS:+,${CT_CC_LANG_OTHERS}}"
    78 
    79     printf "%s" "${lang_list}"
    80 }
    81 
    82 #------------------------------------------------------------------------------
    83 # Core gcc pass 1
    84 do_cc_core_pass_1() {
    85     local -a core_opts
    86 
    87     if [ "${CT_CC_CORE_PASSES_NEEDED}" != "y" ]; then
    88         return 0
    89     fi
    90 
    91     core_opts+=( "mode=static" )
    92     core_opts+=( "host=${CT_BUILD}" )
    93     core_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" )
    94     core_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
    95     core_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
    96     core_opts+=( "ldflags=${CT_LDFLAGS_FOR_HOST}" )
    97     core_opts+=( "lang_list=c" )
    98 
    99     CT_DoStep INFO "Installing pass-1 core C compiler"
   100     CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-core-pass-1"
   101 
   102     do_cc_core_backend "${core_opts[@]}"
   103 
   104     CT_Popd
   105     CT_EndStep
   106 }
   107 
   108 # Core gcc pass 2
   109 do_cc_core_pass_2() {
   110     local -a core_opts
   111 
   112     if [ "${CT_CC_CORE_PASSES_NEEDED}" != "y" ]; then
   113         return 0
   114     fi
   115 
   116     # Common options:
   117     core_opts+=( "host=${CT_BUILD}" )
   118     core_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
   119     core_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" )
   120     core_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
   121     core_opts+=( "ldflags=${CT_LDFLAGS_FOR_HOST}" )
   122     core_opts+=( "lang_list=c" )
   123 
   124     # Different conditions are at stake here:
   125     #   - In case the threading model is NPTL, we need a shared-capable core
   126     #     gcc; in all other cases, we need a static-only core gcc.
   127     #   - In case the threading model is NPTL or win32, or gcc is 4.3 or
   128     #     later, we need to build libgcc
   129     case "${CT_THREADS}" in
   130         nptl)
   131             core_opts+=( "mode=shared" )
   132             core_opts+=( "build_libgcc=yes" )
   133             ;;
   134         win32)
   135             core_opts+=( "mode=static" )
   136             core_opts+=( "build_libgcc=yes" )
   137             ;;
   138         *)
   139             core_opts+=( "mode=static" )
   140             if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
   141                 core_opts+=( "build_libgcc=yes" )
   142             fi
   143             ;;
   144     esac
   145 
   146     CT_DoStep INFO "Installing pass-2 core C compiler"
   147     CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-core-pass-2"
   148 
   149     do_cc_core_backend "${core_opts[@]}"
   150 
   151     CT_Popd
   152     CT_EndStep
   153 }
   154 
   155 #------------------------------------------------------------------------------
   156 # Build core gcc
   157 # This function is used to build the core C compiler.
   158 # Usage: do_cc_core_backend param=value [...]
   159 #   Parameter           : Definition                                : Type      : Default
   160 #   mode                : build a 'static', 'shared' or 'baremetal' : string    : (none)
   161 #   host                : the machine the core will run on          : tuple     : (none)
   162 #   prefix              : dir prefix to install into                : dir       : (none)
   163 #   complibs            : dir where complibs are isntalled          : dir       : (none)
   164 #   lang_list           : the list of languages to build            : string    : (empty)
   165 #   build_libgcc        : build libgcc or not                       : bool      : no
   166 #   build_libstdcxx     : build libstdc++ or not                    : bool      : no
   167 #   build_libgfortran   : build libgfortran or not                  : bool      : no
   168 #   build_staticlinked  : build statically linked or not            : bool      : no
   169 #   build_manuals       : whether to build manuals or not           : bool      : no
   170 #   cflags              : cflags to use                             : string    : (empty)
   171 #   ldflags             : ldflags to use                            : string    : (empty)
   172 # Usage: do_cc_core_backend mode=[static|shared|baremetal] build_libgcc=[yes|no] build_staticlinked=[yes|no]
   173 do_cc_core_backend() {
   174     local mode
   175     local build_libgcc=no
   176     local build_libstdcxx=no
   177     local build_libgfortran=no
   178     local build_staticlinked=no
   179     local build_manuals=no
   180     local host
   181     local prefix
   182     local complibs
   183     local lang_list
   184     local cflags
   185     local ldflags
   186     local tmp
   187     local -a host_libstdcxx_flags
   188     local -a extra_config
   189     local -a core_LDFLAGS
   190     local -a core_targets
   191     local arg
   192 
   193     for arg in "$@"; do
   194         eval "${arg// /\\ }"
   195     done
   196 
   197     CT_DoLog EXTRA "Configuring gcc"
   198 
   199     case "${mode}" in
   200         static)
   201             extra_config+=("--with-newlib")
   202             extra_config+=("--enable-threads=no")
   203             extra_config+=("--disable-shared")
   204             copy_headers=y  # For baremetal, as there's no headers to copy,
   205                             # we copy an empty directory. So, who cares?
   206             ;;
   207         shared)
   208             extra_config+=("--enable-shared")
   209             copy_headers=y
   210             ;;
   211         baremetal)
   212             extra_config+=("--with-newlib")
   213             extra_config+=("--enable-threads=no")
   214             extra_config+=("--disable-shared")
   215             copy_headers=n
   216             ;;
   217         *)
   218             CT_Abort "Internal Error: 'mode' must be one of: 'static', 'shared' or 'baremetal', not '${mode:-(empty)}'"
   219             ;;
   220     esac
   221 
   222     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   223         # Bare metal delivers the core compiler as final compiler, so add version info and bugurl
   224         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   225         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   226     fi
   227 
   228     if [ "${copy_headers}" = "y" ]; then
   229         CT_DoLog DEBUG "Copying headers to install area of bootstrap gcc, so it can build libgcc2"
   230         CT_DoExecLog ALL cp -a "${CT_HEADERS_DIR}" "${prefix}/${CT_TARGET}/include"
   231     fi
   232 
   233     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   234         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   235         if [ -n "${tmp}" ]; then
   236             extra_config+=("${tmp}")
   237         fi
   238     done
   239     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   240         extra_config+=("--enable-__cxa_atexit")
   241     else
   242         extra_config+=("--disable-__cxa_atexit")
   243     fi
   244 
   245     core_LDFLAGS+=("${ldflags}")
   246 
   247     # *** WARNING ! ***
   248     # Keep this full if-else-if-elif-fi-fi block in sync
   249     # with the same block in do_cc, below.
   250     if [ "${build_staticlinked}" = "yes" ]; then
   251         core_LDFLAGS+=("-static")
   252         host_libstdcxx_flags+=("-static-libgcc")
   253         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   254         host_libstdcxx_flags+=("-lm")
   255         # Companion libraries are build static (eg !shared), so
   256         # the libstdc++ is not pulled automatically, although it
   257         # is needed. Shoe-horn it in our LDFLAGS
   258         # Ditto libm on some Fedora boxen
   259         core_LDFLAGS+=("-lstdc++")
   260         core_LDFLAGS+=("-lm")
   261     else
   262         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   263             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   264             # build script
   265             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   266             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   267             host_libstdcxx_flags+=("-static-libgcc")
   268             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   269             host_libstdcxx_flags+=("-lm")
   270         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   271             # When companion libraries are build static (eg !shared),
   272             # the libstdc++ is not pulled automatically, although it
   273             # is needed. Shoe-horn it in our LDFLAGS
   274             # Ditto libm on some Fedora boxen
   275             core_LDFLAGS+=("-lstdc++")
   276             core_LDFLAGS+=("-lm")
   277         fi
   278     fi
   279 
   280     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   281         extra_config+=("--with-gmp=${complibs}")
   282         extra_config+=("--with-mpfr=${complibs}")
   283     fi
   284     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   285         extra_config+=("--with-mpc=${complibs}")
   286     fi
   287     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   288         if [ "${CT_PPL}" = "y" ]; then
   289             extra_config+=("--with-ppl=${complibs}")
   290             # With PPL 0.11+, also pull libpwl if needed
   291             if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   292                 host_libstdcxx_flags+=("-L${complibs}/lib")
   293                 host_libstdcxx_flags+=("-lpwl")
   294             fi
   295         fi
   296         if [ "${CT_ISL}" = "y" ]; then
   297             extra_config+=("--with-isl=${complibs}")
   298         fi
   299         extra_config+=("--with-cloog=${complibs}")
   300     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   301         extra_config+=("--with-ppl=no")
   302         extra_config+=("--with-isl=no")
   303         extra_config+=("--with-cloog=no")
   304     fi
   305     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   306         extra_config+=("--with-libelf=${complibs}")
   307         extra_config+=("--enable-lto")
   308     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   309         extra_config+=("--with-libelf=no")
   310         extra_config+=("--disable-lto")
   311     fi
   312 
   313     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   314         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   315     fi
   316 
   317     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   318         extra_config+=("--enable-target-optspace")
   319     fi
   320 
   321     case "${CT_CC_GCC_LDBL_128}" in
   322         y)  extra_config+=("--with-long-double-128");;
   323         m)  ;;
   324         "") extra_config+=("--without-long-double-128");;
   325     esac
   326 
   327     if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
   328         extra_config+=( --enable-linker-build-id )
   329     fi
   330 
   331     case "${CT_CC_GCC_LNK_HASH_STYLE}" in
   332         "") ;;
   333         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
   334     esac
   335 
   336     case "${CT_ARCH}" in
   337         mips)
   338             case "${CT_CC_GCC_mips_llsc}" in
   339                 y)  extra_config+=( --with-llsc );;
   340                 m)  ;;
   341                 *)  extra_config+=( --without-llsc );;
   342             esac
   343             case "${CT_CC_GCC_mips_synci}" in
   344                 y)  extra_config+=( --with-synci );;
   345                 m)  ;;
   346                 *)  extra_config+=( --without-synci );;
   347             esac
   348             if [ "${CT_CC_GCC_mips_plt}" ]; then
   349                 extra_config+=( --with-mips-plt )
   350             fi
   351             ;; # ARCH is mips
   352     esac
   353 
   354     extra_config+=(--disable-libgomp)
   355     extra_config+=(--disable-libmudflap)
   356 
   357     [ "${CT_TOOLCHAIN_ENABLE_NLS}" != "y" ] && extra_config+=("--disable-nls")
   358 
   359     [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ] && extra_config+=("--disable-libstdcxx-pch")
   360 
   361     if [ "${CT_CC_GCC_SYSTEM_ZLIB}" = "y" ]; then
   362         extra_config+=("--with-system-zlib")
   363     fi
   364 
   365     if [ "${CT_MULTILIB}" = "y" ]; then
   366         extra_config+=("--enable-multilib")
   367     else
   368         extra_config+=("--disable-multilib")
   369     fi
   370 
   371     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   372 
   373     # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
   374     CT_DoExecLog CFG                                \
   375     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   376     CFLAGS="${cflags}"                              \
   377     CXXFLAGS="${cflags}"                            \
   378     LDFLAGS="${core_LDFLAGS[*]}"                    \
   379     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   380         --build=${CT_BUILD}                         \
   381         --host=${host}                              \
   382         --target=${CT_TARGET}                       \
   383         --prefix="${prefix}"                        \
   384         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   385         --disable-libmudflap                        \
   386         ${CC_CORE_SYSROOT_ARG}                      \
   387         "${extra_config[@]}"                        \
   388         --enable-languages="${lang_list}"           \
   389         "${CT_CC_CORE_EXTRA_CONFIG_ARRAY[@]}"
   390 
   391     if [ "${build_libgcc}" = "yes" ]; then
   392         # HACK: we need to override SHLIB_LC from gcc/config/t-slibgcc-elf-ver or
   393         # gcc/config/t-libunwind so -lc is removed from the link for
   394         # libgcc_s.so, as we do not have a target -lc yet.
   395         # This is not as ugly as it appears to be ;-) All symbols get resolved
   396         # during the glibc build, and we provide a proper libgcc_s.so for the
   397         # cross toolchain during the final gcc build.
   398         #
   399         # As we cannot modify the source tree, nor override SHLIB_LC itself
   400         # during configure or make, we have to edit the resultant
   401         # gcc/libgcc.mk itself to remove -lc from the link.
   402         # This causes us to have to jump through some hoops...
   403         #
   404         # To produce libgcc.mk to edit we firstly require libiberty.a,
   405         # so we configure then build it.
   406         # Next we have to configure gcc, create libgcc.mk then edit it...
   407         # So much easier if we just edit the source tree, but hey...
   408         if [ ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/gcc/BASE-VER" ]; then
   409             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libiberty
   410             CT_DoExecLog ALL make ${JOBSFLAGS} -C libiberty libiberty.a
   411             CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp
   412             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp
   413         else
   414             CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp configure-build-libiberty
   415             CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp all-build-libiberty
   416         fi
   417         # HACK: gcc-4.2 uses libdecnumber to build libgcc.mk, so build it here.
   418         if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/libdecnumber" ]; then
   419             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libdecnumber
   420             CT_DoExecLog ALL make ${JOBSFLAGS} -C libdecnumber libdecnumber.a
   421         fi
   422         # HACK: gcc-4.8 uses libbacktrace to make libgcc.mvars, so make it here.
   423         if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/libbacktrace" ]; then
   424             CT_DoExecLog CFG make ${JOBSFLAGS} configure-libbacktrace
   425             CT_DoExecLog ALL make ${JOBSFLAGS} -C libbacktrace
   426         fi
   427 
   428         # Starting with GCC 4.3, libgcc.mk is no longer built,
   429         # and libgcc.mvars is used instead.
   430 
   431         if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
   432             libgcc_rule="libgcc.mvars"
   433             core_targets=( gcc target-libgcc )
   434         else
   435             libgcc_rule="libgcc.mk"
   436             core_targets=( gcc )
   437         fi
   438 
   439         # On bare metal and canadian build the host-compiler is used when
   440         # actually the build-system compiler is required. Choose the correct
   441         # compilers for canadian build and use the defaults on other
   442         # configurations.
   443         if [ "${CT_BARE_METAL},${CT_CANADIAN}" = "y,y" ]; then
   444             repair_cc="CC_FOR_BUILD=${CT_BUILD}-gcc \
   445                        CXX_FOR_BUILD=${CT_BUILD}-g++ \
   446                        GCC_FOR_TARGET=${CT_TARGET}-gcc"
   447         else
   448             repair_cc=""
   449         fi
   450 
   451         CT_DoExecLog ALL make ${JOBSFLAGS} -C gcc ${libgcc_rule} \
   452                               ${repair_cc}
   453         sed -r -i -e 's@-lc@@g' gcc/${libgcc_rule}
   454     else # build_libgcc
   455         core_targets=( gcc )
   456     fi   # ! build libgcc
   457     if [    "${build_libstdcxx}" = "yes"    \
   458          -a "${CT_CC_LANG_CXX}"  = "y"      \
   459        ]; then
   460         core_targets+=( target-libstdc++-v3 )
   461     fi
   462 
   463     if [    "${build_libgfortran}" = "yes"    \
   464          -a "${CT_CC_LANG_FORTRAN}"  = "y"    \
   465        ]; then
   466         core_targets+=( target-libgfortran )
   467     fi
   468 
   469     CT_DoLog EXTRA "Building gcc"
   470     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/all-}"
   471 
   472     CT_DoLog EXTRA "Installing gcc"
   473     CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/install-}"
   474 
   475     if [ "${build_manuals}" = "yes" ]; then
   476         CT_DoLog EXTRA "Building the GCC manuals"
   477         CT_DoExecLog ALL make pdf html
   478         CT_DoLog EXTRA "Installing the GCC manuals"
   479         CT_DoExecLog ALL make install-{pdf,html}-gcc
   480     fi
   481 
   482     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   483     # to call the C compiler with the same, somewhat canonical name.
   484     # check whether compiler has an extension
   485     file="$( ls -1 "${prefix}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   486     [ -z "${file}" ] || ext=".${file##*.}"
   487     CT_DoExecLog ALL ln -sfv "${CT_TARGET}-gcc${ext}" "${prefix}/bin/${CT_TARGET}-cc${ext}"
   488 
   489     if [ "${CT_MULTILIB}" = "y" ]; then
   490         if [ "${CT_CANADIAN}" = "y" -a "${mode}" = "baremetal" \
   491              -a "${host}" = "${CT_HOST}" ]; then
   492             CT_DoLog WARN "Canadian Cross unable to confirm multilibs configured correctly"
   493         else
   494             multilibs=( $( "${prefix}/bin/${CT_TARGET}-gcc" -print-multi-lib   \
   495                            |tail -n +2 ) )
   496             if [ ${#multilibs[@]} -ne 0 ]; then
   497                 CT_DoLog EXTRA "gcc configured with these multilibs (besides the default):"
   498                 for i in "${multilibs[@]}"; do
   499                     dir="${i%%;*}"
   500                     flags="${i#*;}"
   501                     CT_DoLog EXTRA "   ${flags//@/ -}  -->  ${dir}/"
   502                 done
   503             else
   504                 CT_DoLog WARN "gcc configured for multilib, but none available"
   505            fi
   506         fi
   507     fi
   508 }
   509 
   510 #------------------------------------------------------------------------------
   511 # Build complete gcc to run on build
   512 do_cc_for_build() {
   513     local -a build_final_opts
   514     local build_final_backend
   515 
   516     # In case we're canadian or cross-native, it seems that a
   517     # real, complete compiler is needed?!? WTF? Sigh...
   518     # Otherwise, there is nothing to do.
   519     case "${CT_TOOLCHAIN_TYPE}" in
   520         native|cross)   return 0;;
   521     esac
   522 
   523     build_final_opts+=( "host=${CT_BUILD}" )
   524     build_final_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
   525     build_final_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" )
   526     build_final_opts+=( "lang_list=$( cc_gcc_lang_list )" )
   527     if [ "${CT_BARE_METAL}" = "y" ]; then
   528         # In the tests I've done, bare-metal was not impacted by the
   529         # lack of such a compiler, but better safe than sorry...
   530         build_final_opts+=( "mode=baremetal" )
   531         build_final_opts+=( "build_libgcc=yes" )
   532         build_final_opts+=( "build_libstdcxx=yes" )
   533         build_final_opts+=( "build_libgfortran=yes" )
   534         if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   535             build_final_opts+=( "build_staticlinked=yes" )
   536         fi
   537         build_final_backend=do_cc_core_backend
   538     else
   539         build_final_backend=do_cc_backend
   540     fi
   541 
   542     CT_DoStep INFO "Installing final compiler for build"
   543     CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-final-build-${CT_BUILD}"
   544 
   545     "${build_final_backend}" "${build_final_opts[@]}"
   546 
   547     CT_Popd
   548     CT_EndStep
   549 }
   550 
   551 #------------------------------------------------------------------------------
   552 # Build final gcc to run on host
   553 do_cc_for_host() {
   554     local -a final_opts
   555     local final_backend
   556 
   557     final_opts+=( "host=${CT_HOST}" )
   558     final_opts+=( "prefix=${CT_PREFIX_DIR}" )
   559     final_opts+=( "complibs=${CT_HOST_COMPLIBS_DIR}" )
   560     final_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )
   561     final_opts+=( "ldflags=${CT_LDFLAGS_FOR_HOST}" )
   562     final_opts+=( "lang_list=$( cc_gcc_lang_list )" )
   563     if [ "${CT_BUILD_MANUALS}" = "y" ]; then
   564         final_opts+=( "build_manuals=yes" )
   565     fi
   566     if [ "${CT_BARE_METAL}" = "y" ]; then
   567         final_opts+=( "mode=baremetal" )
   568         final_opts+=( "build_libgcc=yes" )
   569         final_opts+=( "build_libstdcxx=yes" )
   570         final_opts+=( "build_libgfortran=yes" )
   571         if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   572             final_opts+=( "build_staticlinked=yes" )
   573         fi
   574         final_backend=do_cc_core_backend
   575     else
   576         final_backend=do_cc_backend
   577     fi
   578 
   579     CT_DoStep INFO "Installing final compiler"
   580     CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-final"
   581 
   582     "${final_backend}" "${final_opts[@]}"
   583 
   584     CT_Popd
   585     CT_EndStep
   586 }
   587 
   588 #------------------------------------------------------------------------------
   589 # Build the final gcc
   590 # Usage: do_cc_backend param=value [...]
   591 #   Parameter     : Definition                          : Type      : Default
   592 #   host          : the host we run onto                : tuple     : (none)
   593 #   prefix        : the runtime prefix                  : dir       : (none)
   594 #   complibs      : the companion libraries prefix      : dir       : (none)
   595 #   cflags        : cflags to use                       : string    : (empty)
   596 #   ldflags       : ldflags to use                      : string    : (empty)
   597 #   lang_list     : the list of languages to build      : string    : (empty)
   598 #   build_manuals : whether to build manuals or not     : bool      : no
   599 do_cc_backend() {
   600     local host
   601     local prefix
   602     local complibs
   603     local cflags
   604     local ldflags
   605     local lang_list
   606     local build_manuals
   607     local -a host_libstdcxx_flags
   608     local -a extra_config
   609     local -a final_LDFLAGS
   610     local tmp
   611     local arg
   612 
   613     for arg in "$@"; do
   614         eval "${arg// /\\ }"
   615     done
   616 
   617     CT_DoLog EXTRA "Configuring gcc"
   618 
   619     # Enable selected languages
   620     extra_config+=("--enable-languages=${lang_list}")
   621 
   622     for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
   623         eval tmp="\${CT_ARCH_WITH_${tmp}}"
   624         if [ -n "${tmp}" ]; then
   625             extra_config+=("${tmp}")
   626         fi
   627     done
   628 
   629     [ "${CT_SHARED_LIBS}" = "y" ] || extra_config+=("--disable-shared")
   630     if [ "${CT_CC_GCC_HAS_PKGVERSION_BUGURL}" = "y" ]; then
   631         extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
   632         [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
   633     fi
   634     case "${CT_CC_GCC_SJLJ_EXCEPTIONS}" in
   635         y)  extra_config+=("--enable-sjlj-exceptions");;
   636         m)  ;;
   637         "") extra_config+=("--disable-sjlj-exceptions");;
   638     esac
   639     if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
   640         extra_config+=("--enable-__cxa_atexit")
   641     else
   642         extra_config+=("--disable-__cxa_atexit")
   643     fi
   644     if [ -n "${CT_CC_ENABLE_CXX_FLAGS}" ]; then
   645         extra_config+=("--enable-cxx-flags=${CT_CC_ENABLE_CXX_FLAGS}")
   646     fi
   647     if [ "${CT_CC_GCC_4_8_or_later}" = "y" ]; then
   648         if [ "${CT_THREADS}" = "none" ]; then
   649             extra_config+=(--disable-libatomic)
   650         fi
   651         if [ "${CT_THREADS}" != "nptl" ]; then
   652             extra_config+=(--disable-libsanitizer)
   653         fi
   654     fi
   655     if [ "${CT_CC_GCC_LIBMUDFLAP}" = "y" ]; then
   656         extra_config+=(--enable-libmudflap)
   657     else
   658         extra_config+=(--disable-libmudflap)
   659     fi
   660     if [ "${CT_CC_GCC_LIBGOMP}" = "y" ]; then
   661         extra_config+=(--enable-libgomp)
   662     else
   663         extra_config+=(--disable-libgomp)
   664     fi
   665     if [ "${CT_CC_GCC_LIBSSP}" = "y" ]; then
   666         extra_config+=(--enable-libssp)
   667     else
   668         extra_config+=(--disable-libssp)
   669     fi
   670     if [ "${CT_CC_GCC_HAS_LIBQUADMATH}" = "y" ]; then
   671         if [ "${CT_CC_GCC_LIBQUADMATH}" = "y" ]; then
   672             extra_config+=(--enable-libquadmath)
   673             extra_config+=(--enable-libquadmath-support)
   674         else
   675             extra_config+=(--disable-libquadmath)
   676             extra_config+=(--disable-libquadmath-support)
   677         fi
   678     fi
   679 
   680     final_LDFLAGS+=("${ldflags}")
   681 
   682     # *** WARNING ! ***
   683     # Keep this full if-else-if-elif-fi-fi block in sync
   684     # with the same block in do_cc_core, above.
   685     if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
   686         final_LDFLAGS+=("-static")
   687         host_libstdcxx_flags+=("-static-libgcc")
   688         host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++")
   689         host_libstdcxx_flags+=("-lm")
   690         # Companion libraries are build static (eg !shared), so
   691         # the libstdc++ is not pulled automatically, although it
   692         # is needed. Shoe-horn it in our LDFLAGS
   693         # Ditto libm on some Fedora boxen
   694         final_LDFLAGS+=("-lstdc++")
   695         final_LDFLAGS+=("-lm")
   696     else
   697         if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
   698             # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
   699             # build script
   700             # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
   701             #       see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
   702             host_libstdcxx_flags+=("-static-libgcc")
   703             host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic")
   704             host_libstdcxx_flags+=("-lm")
   705         elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
   706             # When companion libraries are build static (eg !shared),
   707             # the libstdc++ is not pulled automatically, although it
   708             # is needed. Shoe-horn it in our LDFLAGS
   709             # Ditto libm on some Fedora boxen
   710             final_LDFLAGS+=("-lstdc++")
   711             final_LDFLAGS+=("-lm")
   712         fi
   713     fi
   714 
   715     if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
   716         extra_config+=("--with-gmp=${complibs}")
   717         extra_config+=("--with-mpfr=${complibs}")
   718     fi
   719     if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
   720         extra_config+=("--with-mpc=${complibs}")
   721     fi
   722     if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
   723         if [ "${CT_PPL}" = "y" ]; then
   724             extra_config+=("--with-ppl=${complibs}")
   725             # With PPL 0.11+, also pull libpwl if needed
   726             if [ "${CT_PPL_NEEDS_LIBPWL}" = "y" ]; then
   727                 host_libstdcxx_flags+=("-L${complibs}/lib")
   728                 host_libstdcxx_flags+=("-lpwl")
   729             fi
   730         fi
   731         if [ "${CT_ISL}" = "y" ]; then
   732             extra_config+=("--with-isl=${complibs}")
   733         fi
   734         extra_config+=("--with-cloog=${complibs}")
   735     elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
   736         extra_config+=("--with-ppl=no")
   737         extra_config+=("--with-isl=no")
   738         extra_config+=("--with-cloog=no")
   739     fi
   740     if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
   741         extra_config+=("--with-libelf=${complibs}")
   742     elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
   743         extra_config+=("--with-libelf=no")
   744     fi
   745 
   746     if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then
   747         extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}")
   748     fi
   749 
   750     if [ "${CT_THREADS}" = "none" ]; then
   751         extra_config+=("--disable-threads")
   752         if [ "${CT_CC_GCC_4_2_or_later}" = y ]; then
   753             CT_Test "Disabling libgomp for no-thread gcc>=4.2" "${CT_CC_GCC_LIBGOMP}" = "Y"
   754             extra_config+=("--disable-libgomp")
   755         fi
   756     else
   757         if [ "${CT_THREADS}" = "win32" ]; then
   758             extra_config+=("--enable-threads=win32")
   759             extra_config+=("--disable-win32-registry")
   760         else
   761             extra_config+=("--enable-threads=posix")
   762         fi
   763     fi
   764 
   765     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
   766         extra_config+=("--enable-target-optspace")
   767     fi
   768     if [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ]; then
   769         extra_config+=("--disable-libstdcxx-pch")
   770     fi
   771 
   772     case "${CT_CC_GCC_LDBL_128}" in
   773         y)  extra_config+=("--with-long-double-128");;
   774         m)  ;;
   775         "") extra_config+=("--without-long-double-128");;
   776     esac
   777 
   778     if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
   779         extra_config+=( --enable-linker-build-id )
   780     fi
   781 
   782     case "${CT_CC_GCC_LNK_HASH_STYLE}" in
   783         "") ;;
   784         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
   785     esac
   786 
   787     if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
   788         extra_config+=( --enable-plugin )
   789     fi
   790     if [ "${CT_CC_GCC_GOLD}" = "y" ]; then
   791         extra_config+=( --enable-gold )
   792     fi
   793 
   794     case "${CT_ARCH}" in
   795         mips)
   796             case "${CT_CC_GCC_mips_llsc}" in
   797                 y)  extra_config+=( --with-llsc );;
   798                 m)  ;;
   799                 *)  extra_config+=( --without-llsc );;
   800             esac
   801             case "${CT_CC_GCC_mips_synci}" in
   802                 y)  extra_config+=( --with-synci );;
   803                 m)  ;;
   804                 *)  extra_config+=( --without-synci );;
   805             esac
   806             if [ "${CT_CC_GCC_mips_plt}" ]; then
   807                 extra_config+=( --with-mips-plt )
   808             fi
   809             ;; # ARCH is mips
   810     esac
   811 
   812     [ "${CT_TOOLCHAIN_ENABLE_NLS}" != "y" ] && extra_config+=("--disable-nls")
   813 
   814     if [ "${CT_CC_GCC_SYSTEM_ZLIB}" = "y" ]; then
   815         extra_config+=("--with-system-zlib")
   816     fi
   817 
   818     if [ "${CT_MULTILIB}" = "y" ]; then
   819         extra_config+=("--enable-multilib")
   820     else
   821         extra_config+=("--disable-multilib")
   822     fi
   823 
   824     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
   825 
   826     CT_DoExecLog CFG                                \
   827     CC_FOR_BUILD="${CT_BUILD}-gcc"                  \
   828     CFLAGS="${cflags}"                              \
   829     CXXFLAGS="${cflags}"                            \
   830     LDFLAGS="${final_LDFLAGS[*]}"                   \
   831     CFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"         \
   832     CXXFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}"       \
   833     LDFLAGS_FOR_TARGET="${CT_TARGET_LDFLAGS}"       \
   834     "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure"  \
   835         --build=${CT_BUILD}                         \
   836         --host=${host}                              \
   837         --target=${CT_TARGET}                       \
   838         --prefix="${prefix}"                        \
   839         ${CC_SYSROOT_ARG}                           \
   840         "${extra_config[@]}"                        \
   841         --with-local-prefix="${CT_SYSROOT_DIR}"     \
   842         --enable-c99                                \
   843         --enable-long-long                          \
   844         "${CT_CC_EXTRA_CONFIG_ARRAY[@]}"
   845 
   846     if [ "${CT_CANADIAN}" = "y" ]; then
   847         CT_DoLog EXTRA "Building libiberty"
   848         CT_DoExecLog ALL make ${JOBSFLAGS} all-build-libiberty
   849     fi
   850 
   851     CT_DoLog EXTRA "Building gcc"
   852     CT_DoExecLog ALL make ${JOBSFLAGS} all
   853 
   854     CT_DoLog EXTRA "Installing gcc"
   855     CT_DoExecLog ALL make ${JOBSFLAGS} install
   856 
   857     if [ "${build_manuals}" = "yes" ]; then
   858         CT_DoLog EXTRA "Building the GCC manuals"
   859         CT_DoExecLog ALL make pdf html
   860         CT_DoLog EXTRA "Installing the GCC manuals"
   861         CT_DoExecLog ALL make install-{pdf,html}-gcc
   862     fi
   863 
   864     # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
   865     # to call the C compiler with the same, somewhat canonical name.
   866     # check whether compiler has an extension
   867     file="$( ls -1 "${CT_PREFIX_DIR}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
   868     [ -z "${file}" ] || ext=".${file##*.}"
   869     CT_DoExecLog ALL ln -sfv "${CT_TARGET}-gcc${ext}" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-cc${ext}"
   870 
   871     if [ "${CT_MULTILIB}" = "y" ]; then
   872         if [ "${CT_CANADIAN}" = "y" ]; then
   873             CT_DoLog WARN "Canadian Cross unable to confirm multilibs configured correctly"
   874         else
   875             multilibs=( $( "${prefix}/bin/${CT_TARGET}-gcc" -print-multi-lib \
   876                            |tail -n +2 ) )
   877             if [ ${#multilibs[@]} -ne 0 ]; then
   878                 CT_DoLog EXTRA "gcc configured with these multilibs (besides the default):"
   879                 for i in "${multilibs[@]}"; do
   880                     dir="${i%%;*}"
   881                     flags="${i#*;}"
   882                     CT_DoLog EXTRA "   ${flags//@/ -}  -->  ${dir}/"
   883                 done
   884             else
   885                 CT_DoLog WARN "gcc configured for multilib, but none available"
   886             fi
   887         fi
   888     fi
   889 }