# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
# SPDX-FileCopyrightText: 2021 Paul Dersey <pdersey@gmail.com>
#
# SPDX-License-Identifier: GPL-3.0-or-later

src_prepare() {
    default

    rm configure Makefile.in

    # Rebuild aclocal.m4 files
    # aclocal.m4 in libiberty seems to be hand-written
    for dir in binutils bfd gas gprof ld opcodes; do
        cd $dir
        rm aclocal.m4
        aclocal-1.4
        cd ..
    done

    # intl/aclocal.m4 consists of two parts.
    # First is generated by aclocal and second is from
    # gettext.m4 file that is handwritten
    # Here we rebuild just the first part
    cd intl
    csplit -sf file -n 1 aclocal.m4 '/This file is derived from/'
    rm file0
    mv file1 gettext.m4
    # Build with aclocal-1.4 instead of 1.3
    sed -i 's/AM_PROG_INSTALL/AC_PROG_INSTALL/' configure.in
    aclocal-1.4
    cat gettext.m4 >> aclocal.m4
    cd ..

    for dir in binutils bfd gas intl libiberty ld opcodes; do
        cd $dir
        rm config.in
        autoheader-2.13
        cd ..
    done

    for dir in binutils bfd gas ld gprof libiberty opcodes; do
        cd $dir
        rm configure
        autoconf-2.13
        cd ..
    done
    for dir in etc intl; do
        cd $dir
        rm configure
        autoconf-2.12
        cd ..
    done

    # Rebuild libtool files
    rm config.guess config.sub ltmain.sh
    libtoolize
    cp ${PREFIX}/share/aclocal/libtool.m4 aclocal.m4

    # automake errors out without this
    cd gas
    mv config/m68k-parse.y .
    sed -i 's#config/m68k-parse.y#m68k-parse.y#' Makefile.am
    cd ..

    # Disable documentation build which needs pod2man
    for dir in bfd binutils gas gprof ld opcodes; do
        cd $dir
        sed -i '/SUBDIRS/d' Makefile.am
        rm Makefile.in
        automake-1.4
        cd ..
    done

    # Rebuild bison files
    touch */*.y
    rm ld/ldgram.c ld/ldgram.h
    rm gas/itbl-parse.c gas/itbl-parse.h
    rm gas/m68k-parse.c
    rm binutils/arparse.c binutils/arparse.h
    rm binutils/nlmheader.c binutils/nlmheader.h
    rm binutils/sysinfo.c binutils/sysinfo.h
    rm binutils/defparse.c binutils/defparse.h
    rm binutils/rcparse.c binutils/rcparse.h

    # Rebuild flex generated files
    touch */*.l
    rm ld/ldlex.c
    rm gas/itbl-lex.c
    rm binutils/syslex.c binutils/rclex.c binutils/deflex.c binutils/arlex.c

    # Remove prebuilt texinfo files
    rm */*.info* */*/*.info*
}

src_configure() {
    # TODO: Find a way to avoid these hacks
    sed -i '/#undef pid_t/d' libiberty/config.in
    sed -i '/#undef uintptr_t/d' libiberty/config.in
    sed -i '/NEED_DECLARATION_SBRK/d' binutils/config.in
    for dir in bfd opcodes binutils gas ld; do    
        sed -i '/#undef size_t/d' ${dir}/config.in
        sed -i '/#undef off_t/d' ${dir}/config.in
    done
    sed -i 's/C_alloca/alloca/g' libiberty/alloca.c
    sed -i 's/C_alloca/alloca/g' include/libiberty.h

    for dir in intl libiberty opcodes bfd binutils gas gprof ld; do
        cd $dir

        LD="true" AR="tcc -ar" RANLIB="true" CC="tcc -D __GLIBC_MINOR__=6 -DHAVE_SBRK=1" \
            ./configure \
            --disable-nls \
            --disable-shared \
            --disable-werror \
            --build=i386-unknown-linux-gnu \
            --host=i386-unknown-linux-gnu \
            --target=i386-unknown-linux-gnu \
            --with-sysroot="${PREFIX}" \
            --disable-64-bit-bfd \
            --prefix="${PREFIX}" \
            --libdir="${PREFIX}/lib/musl" \
            --srcdir=.
        cd ..
    done
}

src_compile() {
    make -C bfd headers
    for dir in libiberty bfd opcodes binutils gas gprof ld; do
        make -C $dir MAKEINFO=true
    done
}

src_install() {
    for dir in libiberty bfd opcodes binutils gas gprof ld; do
        make -C $dir install MAKEINFO=true DESTDIR="${DESTDIR}"
    done
}