emulith-1.30norayr-overlay

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# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

inherit flag-o-matic toolchain-funcs

DESCRIPTION="ETH Lilith Modula-2 computer emulator"
HOMEPAGE="http://pascal.hansotten.com/niklaus-wirth/lilith/emulith/"
SRC_URI="
    http://pascal.hansotten.com/uploads/lilith/Emulith_v13.tgz -> ${P}.tgz
    http://pascal.hansotten.com/uploads/lilith/docu/LilithHandbook_Aug82.pdf
    tools? (
        http://pascal.hansotten.com/uploads/lilith/ETH_Disks.zip
        http://pascal.hansotten.com/uploads/lilith/medos.zip
        http://pascal.hansotten.com/uploads/lilith/medos_txt.zip
    )
"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~arm ~ia64 ~ppc ~ppc64 ~sparc ~x86"

IUSE="+floppy tools compiler"

RDEPEND="
    x11-libs/fltk:1[opengl]
    x11-libs/libX11
    x11-libs/libXft
    media-libs/libjpeg-turbo
    media-libs/libpng
"
DEPEND="${RDEPEND}"

S="${WORKDIR}"

src_prepare() {
  default

  local fltk_cflags_escaped="-Ifltk"
  local fltk_libdir_escaped="fltk/lib"

  sed -i \
    -e "s|-Ifltk|${fltk_cflags_escaped}|g" \
    -e "s|fltk/lib|${fltk_libdir_escaped}|g" \
    Makefile || die "sed failed"

  # Undefine all b0..b7 before FLTK includes to prevent macro collision
  sed -i '/#include "lilith.h"/a \
#ifdef b0\n#undef b0\n#endif\n\
#ifdef b1\n#undef b1\n#endif\n\
#ifdef b2\n#undef b2\n#endif\n\
#ifdef b3\n#undef b3\n#endif\n\
#ifdef b4\n#undef b4\n#endif\n\
#ifdef b5\n#undef b5\n#endif\n\
#ifdef b6\n#undef b6\n#endif\n\
#ifdef b7\n#undef b7\n#endif' \
    Src/fltk_cde.c || die "sed undef b0-b7 failed"
}

src_compile() {
    append-cxxflags $(fltk-config --cxxflags)
    append-ldflags $(fltk-config --ldflags)

    emake lin \
        CXX="$(tc-getCXX)" \
        CC="$(tc-getCC)" \
        STRIP=true \
        CFLAGS="${CFLAGS}" \
        CXXFLAGS="${CXXFLAGS}"

    if use tools; then
        emake fs
    fi
}

src_install() {
    # Install main binary as emulith-bin
    newbin emulith emulith-bin || die

    # Install wrapper script as emulith
    cat > "${T}/emulith" << 'EOF'
#!/bin/sh
cd /usr/share/emulith || exit 1
exec /usr/bin/emulith-bin "$@"
EOF
    dobin "${T}/emulith" || die
    chmod +x "${ED}/usr/bin/emulith" || die

    # Install optional support tools with prefix
    if use tools; then
        for bin in lft pp dmp; do
            newbin support/$bin emulith-$bin || die
        done
    fi

    # Core runtime files
    insinto /usr/share/emulith
    doins -r img mcode ascii.def emulith.ini || die

    # Optional floppy files
    if use floppy; then
        insinto /usr/share/emulith/floppy
        doins floppy/* || die
    fi

    # Optional compiler files: install and extract zips
    if use compiler; then
        insinto /usr/share/emulith/compiler
        doins "${DISTDIR}"/ETH_Disks.zip "${DISTDIR}"/medos*.zip || die

        local compdir="${ED}/usr/share/emulith/compiler"
        mkdir -p "${compdir}" || die

        unzip -q -o "${DISTDIR}/ETH_Disks.zip" -d "${compdir}" || die "unzip ETH_Disks failed"
        unzip -q -o "${DISTDIR}/medos.zip" -d "${compdir}" || die "unzip medos failed"
        unzip -q -o "${DISTDIR}/medos_txt.zip" -d "${compdir}" || die "unzip medos_txt failed"
    fi

    # Documentation
    dodoc "${DISTDIR}/LilithHandbook_Aug82.pdf"
    dodoc docu/Emulith_Manual_1.3.pdf docu/18-03-2012.txt || die

    # Create writable user directory
    keepdir /var/lib/emulith
    dosym ../../var/lib/emulith /usr/share/emulith/userdata || die
}



pkg_postinst() {
    elog "To start the emulator:"
    elog "  \$ emulith"
    elog
    elog "Default disk images are installed to:"
    elog "  /usr/share/emulith/img"
    elog
    elog "Create writable copies in your home directory:"
    elog "  mkdir -p ~/.emulith/img"
    elog "  cp /usr/share/emulith/img/* ~/.emulith/img/"
    elog

    if use compiler; then
        elog "Compiler-related disk images (ETH_Disks.zip, medos.zip) installed in:"
        elog "  /usr/share/emulith/compiler"
    fi
}