# Build recipe for emacs.
#
# Copyright (C) 2020 Kevin "The Nuclear" Bloom, <kevin.bloom@posteo.net>.
# Copyright (c) 2020-2021 Matias Fonzo, <selk@dragora.org>.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Exit immediately on any error
set -e

program=emacs
version=27.1
release=1

# Define a category for the output of the package name
pkgcategory=x-apps

tarname=${program}-${version}.tar.gz
# srcdir=${program}-${version}    # Not needed in major releases

# Remote source(s)
fetch=https://ftp.gnu.org/gnu/emacs/$tarname

description="
The Emacs text editor.

GNU Emacs is an extensible, customizable text editor and more.
At its core is an interpreter for Emacs Lisp, a dialect of the
Lisp programming language with extensions to support text
editing.
"

homepage=https://www.gnu.org/software/emacs/
license="GPLv3+"

# Source documentation
docs="BUGS CONTRIBUTE COPYING ChangeLog* README"
docsdir="${docdir}/${program}-${version}"

build()
{
    unpack "${tardir}/$tarname"

    cd "$srcdir"

    # Set sane permissions
    chmod -R u+w,go-w,a+rX-s .

    ./configure CPPFLAGS="$QICPPFLAGS" CFLAGS="$QICFLAGS" LDFLAGS="$QILDFLAGS" \
    $configure_args \
    --libdir=/usr/lib${libSuffix} \
    --infodir=$infodir \
    --mandir=$mandir \
    --docdir=$docdir \
    --program-prefix= \
    --program-suffix= \
    --with-modules \
    --with-x \
    --with-x-toolkit=gtk3 \
    --without-libsystemd \
    --without-gconf \
    --without-gsettings \
    --without-compress-install \
    --build="$(gcc -dumpmachine)"

    make -j${jobs} V=1
    make -j${jobs} DESTDIR="$destdir" install-strip

    # A world without systemd is a healthy world...
    rm -rf "${destdir}/usr/lib${libSuffix}/systemd"
    rmdir "${destdir}/usr/lib${libSuffix}" 2> /dev/null || true

    # Re-create directory for games
    mkdir -p "${destdir}/var/games/emacs"
    chown :games "${destdir}/var/games/emacs"

    if test -d "${destdir}/$infodir"
    then
        # Delete index file for the package
        rm -f "${destdir}/${infodir}/dir"

        # Compress info documents
        lzip -9 "${destdir}/${infodir}"/* || true
    fi

    # Compress and link man pages (if needed)
    if test -d "${destdir}/$mandir"
    then
        (
            cd "${destdir}/$mandir"
            find . -type f -exec lzip -9 {} +
            find . -type l | while read -r file
            do
                ln -sf "$(readlink -- "$file").lz" "${file}.lz"
                rm -- "$file"
            done
        )
    fi

    # Copy documentation
    mkdir -p "${destdir}${docsdir}"
    cp -p $docs "${destdir}${docsdir}"
}

