#!/bin/sh
set -o errexit

# Reading system configuration informations, functions and package versions.
source ../sysinfos
source ../functions
source ../packages-list

# Manually applying patches
apply_patch ${1}-branch_update-1.patch ${1}

case "${HVL_TARGET}" in
    "x86")
        apply_patch ${1}-specs-1.patch ${1}
        ;;
    "x86_64")
        apply_patch ${1}-pure64_specs-1.patch ${1}
	;;
esac

cd ${LFS_TMP}/${1}

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

# Alter gcc's C preprocessor's default include search path to use /tools only:
cp -v gcc/Makefile.in{,.orig}
sed -e "s@\(^CROSS_SYSTEM_HEADER_DIR =\).*@\1 /tools/include@g" \
    gcc/Makefile.in.orig > gcc/Makefile.in

# We will create a dummy limits.h so the build will not use the one provided by the host distro:
touch /tools/include/limits.h

# --with-local-prefix=/tools
#     The purpose of this switch is to remove /usr/local/include from gcc's include search path.
#     This is not absolutely essential, however, it helps to minimize the influence of the host system.
# --disable-shared
#     Disables the creation of the shared libraries.
# --disable-threads
#     This will prevent GCC from looking for the multi-thread include files, since they haven't been
#     created for this architecture yet. GCC will be able to find the multi-thread information after
#     the Glibc headers are created.
# --enable-languages=c
#     This option ensures that only the C compiler is built.
cd ${LFS_TMP}/${1}-build
AR=ar LDFLAGS="-Wl,-rpath,/cross-tools/lib" \
    ../${1}/configure \
    --prefix=/cross-tools \
    --build=${CLFS_HOST} \
    --host=${CLFS_HOST} \
    --target=${CLFS_TARGET} \
    --with-sysroot=${CLFS} \
    --with-local-prefix=/tools \
    --disable-nls \
    --disable-shared \
    --with-mpfr=/cross-tools \
    --with-gmp=/cross-tools \
    --with-ppl=/cross-tools \
    --with-cloog=/cross-tools \
    --without-headers \
    --with-newlib \
    --disable-decimal-float \
    --disable-libgomp \
    --disable-libmudflap \
    --disable-libssp \
    --disable-threads \
    --enable-languages=c \
    --disable-multilib
${HVMAKE} all-gcc all-target-libgcc
${HVMAKE} install-gcc install-target-libgcc

exit $?