#!/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

# Set the directory searched by the fixincludes process for system headers, so it won't look at the host's headers:
cp -v gcc/Makefile.in{,.orig}
sed -e 's@\(^NATIVE_SYSTEM_HEADER_DIR =\).*@\1 /tools/include@g' \
    gcc/Makefile.in.orig > gcc/Makefile.in

# --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
CC="${CC} ${CLFS_BUILDFLAGS}" CXX="${CXX} ${CLFS_BUILDFLAGS}" \
    ../${1}/configure \
    --prefix=/tools \
    --build=${CLFS_HOST} \
    --host=${CLFS_TARGET} \
    --target=${CLFS_TARGET} \
    --disable-multilib \
    --with-local-prefix=/tools \
    --libexecdir=/tools/lib \
    --disable-nls \
    --disable-libstdcxx-pch \
    --enable-long-long \
    --enable-c99 \
    --enable-shared \
    --enable-threads=posix \
    --enable-__cxa_atexit \
    --enable-languages=c,c++
# Prevent GCC from looking in the wrong directories for headers and libraries:
cp Makefile{,.orig}
sed "/^HOST_\(GMP\|PPL\|CLOOG\)\(LIBS\|INC\)/s:-[IL]/\(lib\|include\)::" \
    Makefile.orig > Makefile
${HVMAKE} AS_FOR_TARGET="${AS}" LD_FOR_TARGET="${LD}"
${HVMAKE} install

exit $?