#!/bin/bash
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
    *)
        TARGET_CONFIGURE_OPTS="--with-ppl=/cross-tools \
            --with-cloog=/cross-tools \
            --disable-multilib"
        ;;
esac

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

# Configure options:
# --enable-languages=c,c++
#     This option ensures that only the C and C++ compilers are built.
# --enable-__cxa_atexit
#     This option allows use of __cxa_atexit, rather than atexit, to register
#     C++ destructors for local
#     statics and global objects and is essential for fully standards-compliant
#     handling of destructors. It also affects the C++ ABI and therefore results
#     in C++ shared libraries and C++ programs that are interoperable with other
#     Linux distributions.
# --enable-c99
#     Enable C99 support for C programs.
# --enable-long-long
#     Enables long long support in the compiler.
# --enable-threads=posix
#     This enables C++ exception handling for multi-threaded code.
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 \
    --enable-shared \
    --enable-languages=c,c++ \
    --enable-__cxa_atexit \
    --with-mpfr=/cross-tools \
    --with-gmp=/cross-tools \
    --enable-c99 \
    --enable-long-long \
    --enable-threads=posix \
    ${TARGET_CONFIGURE_OPTS}
${HVMAKE} \
    AS_FOR_TARGET="${CLFS_TARGET}-as" \
    LD_FOR_TARGET="${CLFS_TARGET}-ld"
${HVMAKE} install

exit $?