#!/bin/bash

hvconfig_pre()
{
    export AR=ar
    export LDFLAGS="-Wl,-rpath,${CROSS_TOOLS_DIR}/lib"

    # Common options for passes 1 & 2
    # --with-local-prefix:
    #   Remove /usr/local/include (default value) from gcc's include search
    #   path. This is not absolutely essential, however, it helps to minimize
    #   the influence of the host system.
    # --with-native-system-header-dir=dirname
    #   Must be an absolute directory (from within sysroot).
    #   The compiler will search the sysroot directory within dirname for
    #   native system headers rather than the default /usr/include.
    #   For example, with:
    #     --with-sysroot=/opt/toolchain
    #     --with-native-system-header-dir=/tools/include
    #   then GCC will search for system headers in:
    #     /opt/toolchain/tools/include
    CONFIGURE_OPTS=" \
        --prefix=/cross-tools \
        --build=${CLFS_HOST} \
        --host=${CLFS_HOST} \
        --target=${CLFS_TARGET} \
        --with-sysroot=${CLFS} \
        --with-local-prefix=${TOOLS_DIR} \
        --with-native-system-header-dir=/tools/include \
        --disable-nls \
        --with-mpfr=${CROSS_TOOLS_DIR} \
        --with-gmp=${CROSS_TOOLS_DIR} \
        --with-isl=${CROSS_TOOLS_DIR} \
        --with-cloog=${CROSS_TOOLS_DIR} \
        --with-mpc=${CROSS_TOOLS_DIR}
        --with-system-zlib \
        --enable-checking=release \
        --disable-multilib"

    if [ "x${HVLABEL}" = "x${GCC}-pass1" ]; then
        # --without-headers:
        #   When building a cross-compiler and there are no system headers
        #   for the target yet (they will be available once glibc is built).
        # --with-newlib:
        #   Tell the configuration utility not to use glibc, since it has not
        #   yet been compiled for the target.
        CONFIGURE_OPTS+=" \
            --disable-shared \
            --without-headers \
            --with-newlib \
            --disable-decimal-float \
            --disable-libgomp \
            --disable-libmudflap \
            --disable-libssp \
            --disable-libatomic \
            --disable-libitm \
            --disable-libsanitizer \
            --disable-libquadmath \
            --disable-threads \
            --disable-target-zlib \
            --enable-languages=c"

        # We will create a dummy limits.h so the build will not use the one
        # provided by the host distro:
        mkdir -p ${TOOLS_DIR}/include
        touch ${TOOLS_DIR}/include/limits.h
    else
        CONFIGURE_OPTS+=" \
            --enable-shared \
            --disable-static \
            --enable-languages=c,c++ \
            --enable-__cxa_atexit \
            --enable-c99 \
            --enable-long-long \
            --enable-libstdcxx-time \
            --enable-threads=posix"

        cd ${SRC_DIR}

        # Change the StartFile Spec to point to the correct library location:
        echo -en '\n' >> gcc/config/linux.h
        echo -en '#undef  STANDARD_STARTFILE_PREFIX_1\n' >> gcc/config/linux.h
        echo -en '#define STANDARD_STARTFILE_PREFIX_1 "/tools/lib/"\n' >> \
            gcc/config/linux.h
        echo -en '#undef  STANDARD_STARTFILE_PREFIX_2\n' >> gcc/config/linux.h
        echo -en '#define STANDARD_STARTFILE_PREFIX_2 ""\n' >> \
            gcc/config/linux.h
    fi
}

hvconfig_post()
{
    unset AR
    unset LDFLAGS
}

hvbuild()
{
    if [ "x${HVLABEL}" = "x${GCC}-pass1" ]; then
        ${HVMAKE} all-gcc all-target-libgcc
        ${HVMAKE} DESTDIR=${LFS} install-gcc install-target-libgcc
    else
        ${HVMAKE} \
            AS_FOR_TARGET="${CLFS_TARGET}-as" \
            LD_FOR_TARGET="${CLFS_TARGET}-ld"
        ${HVMAKE} DESTDIR=${LFS} install
    fi
}