# This file adds the function to build the final gcc C compiler

# Copyright 2007 Yann E. MORIN

# Licensed under the GPL v2. See COPYING in the root of this package

# Download final gcc

do_cc_get() {

    # Ah! gcc folks are kind of 'different': they store the tarballs in

    # subdirectories of the same name! That's because gcc is such /crap/ that

    # it is such /big/ that it needs being splitted for distribution! Sad. :-(

    # Arrgghh! Some of those versions does not follow this convention:

    # gcc-3.3.3 lives in releases/gcc-3.3.3, while gcc-2.95.* isn't in a

    # subdirectory! You bastard!

    CT_GetFile "${CT_CC_FILE}"                                  \

               ftp://ftp.gnu.org/gnu/gcc/${CT_CC_FILE}          \

               ftp://ftp.gnu.org/gnu/gcc/releases/${CT_CC_FILE} \

               ftp://ftp.gnu.org/gnu/gcc

}

# Extract final gcc

do_cc_extract() {

    CT_ExtractAndPatch "${CT_CC_FILE}"

}

# Build final gcc

do_cc() {

    CT_DoStep INFO "Installing final compiler"

    mkdir -p "${CT_BUILD_DIR}/build-cc"

    cd "${CT_BUILD_DIR}/build-cc"

    CT_DoLog EXTRA "Configuring final compiler"

    # Enable selected languages

    lang_opt="c"

    [ "${CT_CC_LANG_CXX}" = "y"      ] && lang_opt="${lang_opt},c++"

    [ "${CT_CC_LANG_FORTRAN}" = "y"  ] && lang_opt="${lang_opt},fortran"

    [ "${CT_CC_LANG_ADA}" = "y"      ] && lang_opt="${lang_opt},ada"

    [ "${CT_CC_LANG_JAVA}" = "y"     ] && lang_opt="${lang_opt},java"

    [ "${CT_CC_LANG_OBJC}" = "y"     ] && lang_opt="${lang_opt},objc"

    [ "${CT_CC_LANG_OBJCXX}" = "y"   ] && lang_opt="${lang_opt},obj-c++"

    CT_Test "Building Fortran language is not yet supported. Will try..." "${CT_CC_LANG_FORTRAN}" = "y"

    CT_Test "Building ADA language is not yet supported. Will try..." "${CT_CC_LANG_ADA}" = "y"

    CT_Test "Building Java language is not yet supported. Will try..." "${CT_CC_LANG_JAVA}" = "y"

    CT_Test "Building Objective-C language is not yet supported. Will try..." "${CT_CC_LANG_OBJC}" = "y"

    CT_Test "Building Objective-C++ language is not yet supported. Will try..." "${CT_CC_LANG_OBJCXX}" = "y"

    CT_Test "Building ${CT_CC_LANG_OTHERS} language(s) is not yet supported. Will try..." -n "${CT_CC_LANG_OTHERS}"

    lang_opt=`echo "${lang_opt},${CT_CC_LANG_OTHERS}" |sed -r -e 's/,+/,/g; s/,*$//;'`

    extra_config="--enable-languages=${lang_opt}"

    [ "${CT_ARCH_FLOAT_SW}" = "y" ] && extra_config="${extra_config} --with-float=soft"

    [ "${CT_SHARED_LIBS}" = "y" ] || extra_config="${extra_config} --disable-shared"

    [ -n "${CT_ARCH_ABI}" ]  && extra_config="${extra_config} --with-abi=${CT_ARCH_ABI}"

    [ -n "${CT_ARCH_CPU}" ]  && extra_config="${extra_config} --with-cpu=${CT_ARCH_CPU}"

    [ -n "${CT_ARCH_TUNE}" ] && extra_config="${extra_config} --with-tune=${CT_ARCH_TUNE}"

    [ -n "${CT_ARCH_ARCH}" ] && extra_config="${extra_config} --with-arch=${CT_ARCH_ARCH}"

    [ -n "${CT_ARCH_FPU}" ] && extra_config="${extra_config} --with-fpu=${CT_ARCH_FPU}"

    if [ "${CT_TARGET_MULTILIB}" = "y" ]; then

       extra_config="${extra_config} --enable-multilib"

    else

       extra_config="${extra_config} --disable-multilib"

    fi

    [ "${CT_CC_CXA_ATEXIT}" == "y" ] && extra_config="${extra_config} --enable-__cxa_atexit"

    CT_DoLog DEBUG "Extra config passed: \"${extra_config}\""

    # --enable-symvers=gnu really only needed for sh4 to work around a

    # detection problem only matters for gcc-3.2.x and later, I think.

    # --disable-nls to work around crash bug on ppc405, but also because

    # embedded systems don't really need message catalogs...

    CFLAGS="${CT_CFLAGS_FOR_HOST}"                  \

    "${CT_SRC_DIR}/${CT_CC_FILE}/configure"     \

        ${CT_CANADIAN_OPT}                      \

        --target=${CT_TARGET} --host=${CT_HOST} \

        --prefix="${CT_PREFIX_DIR}"             \

        ${CC_SYSROOT_ARG}                       \

        ${extra_config}                         \

        --with-local-prefix="${CT_SYSROOT_DIR}" \

        --disable-nls                           \

        --enable-threads=posix                  \

        --enable-symvers=gnu                    \

        --enable-c99                            \

        --enable-long-long                      \

        ${CT_CC_EXTRA_CONFIG}                   2>&1 |CT_DoLog DEBUG

    if [ ! "${CT_CANADIAN}" = "y" ]; then

        CT_DoLog EXTRA "Building libiberty"

        make ${PARALLELMFLAGS} all-build-libiberty 2>&1 |CT_DoLog DEBUG

    fi

    # Idea from <cort.dougan at gmail.com>:

    # Fix lib/lib64 confusion for GCC 3.3.3 on PowerPC64 and x86_64.

    # GCC 3.4.0 and up don't suffer from this confusion, and don't need this

    # kludge.

    # FIXME: we should patch gcc's source rather than uglify crosstool.sh.

    # FIXME: is this needed for gcc-3.3.[56]?

    case "${CT_CC_FILE}" in

      gcc-3.3.[34])

        case "${CT_TARGET}" in

          powerpc64-unknown-linux-gnu|x86_64-unknown-linux-gnu)

            for d in `find "${CT_SYSROOT_DIR}" -name lib -type d -empty`; do

              if [ -d `dirname "${d}"`/lib64 ] ; then

                rm -rf "${d}"

                ln -s `dirname "${d}"`/lib64 "${d}"

              fi

            done ;;

          *) ;;

        esac ;;

    esac

    CT_DoLog EXTRA "Building final compiler"

    make ${PARALLELMFLAGS} all 2>&1 |CT_DoLog DEBUG

    CT_DoLog EXTRA "Installing final compiler"

    make install 2>&1 |CT_DoLog DEBUG

    # FIXME: shouldn't people who want this just --disable-multilib in final gcc

    # and be done with it?

    # This code should probably be deleted, it was written long ago and hasn't

    # been tested in ages.

    # kludge: If the chip does not have a floating point unit

    # (i.e. if GLIBC_EXTRA_CONFIG contains --without-fp),

    # and there are shared libraries in /lib/nof, copy them to /lib

    # so they get used by default.

    # FIXME: only rs6000/powerpc seem to use nof.  See MULTILIB_DIRNAMES

    # in $GCC_DIR/gcc/config/$TARGET/* to see what your arch calls it.

    #case "${CT_LIBC_EXTRA_CONFIG}" in

    #    *--without-fp*)

    #        if test -d "${CT_SYSROOT_DIR}/lib/nof"; then

    #            cp -af "${CT_SYSROOT_DIR}/lib/nof/"*.so* "${CT_SYSROOT_DIR}/lib" || true

    #        fi

    #    ;;

    #esac

    CT_EndStep

}