#!/bin/bash
ulimit -s unlimited
shopt -s extglob

# libgccjit.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter for Slackware ARM.
#
# Copyright 2003, 2004  Slackware Linux, Inc., Concord, California, USA
# Copyright 2005-2025  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Modified 2011 by Eric Hameleers <alien at slackware.com> for OpenJDK.
# Modified to build libgccjit based on ideas from Didier Spaier's SlackBuild.

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
slackset_var_cwds

# Detect whether we're building for /patches:
# This function sets the variable 'SLACKPATCHING'
slack_findpkgstore_is_stablerelease

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# We REQUIRE_GLOBAL_LOCK on this package to avoid colliding with a gcc build
# if make_world.sh is running in parallel.

pushd $CWD
SRCVER=${VERSION:-$(echo $SRCNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
popd

# Extract source:
SRCNAM=gcc
tar xf $CWD/$SRCNAM-$SRCVER.tar.!(*sign|*asc|*sig)
cd $SRCNAM*/ || failextract
slackhousekeeping

# Apply any required patches:
for patch in $CWD/patches/*.patch $CWD/patches/*.diff ; do
  if [ -r "$patch" ]; then
    cat $patch | patch -p1 --verbose --backup --suffix=.orig || exit 1
  fi
done
for patch in $CWD/patches/*.patch.gz $CWD/patches/*.diff.gz ; do
  if [ -r "$patch" ]; then
    zcat $patch | patch -p1 --verbose --backup --suffix=.orig || exit 1
  fi
done

# Install docs:
DOCSDIR=$PKG/usr/doc/$PKGNAM-$VERSION
mkdir -vpm755 $DOCSDIR
cp -fav \
  COPYING.RUNTIME gcc/jit/TODO* gcc/jit/notes* \
$DOCSDIR
if [ -r gcc/jit/ChangeLog ]; then
  cat gcc/jit/ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r gcc/jit/ChangeLog $DOCSDIR/ChangeLog
fi

# Build options:
case $ARCH in
  aarch64) export GCC_ARCHOPTS="--with-arch=armv8-a";;
esac
TARGET=${SLK_ARCH_TARGET}
LIBARCH=${SLKPORTARCH}

# Build gcc:
mkdir gcc.build.lnx
pushd gcc.build.lnx
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
../configure \
    --prefix=/usr \
    --libdir=/usr/lib$LIBDIRSUFFIX \
    --mandir=/usr/man \
    --infodir=/usr/info \
    --enable-shared \
    --enable-host-shared \
    --disable-bootstrap \
    --enable-languages=jit \
    --enable-threads=posix \
    --enable-checking=release \
    --enable-objc-gc \
    --with-system-zlib \
    --enable-libstdcxx-dual-abi \
    --with-default-libstdcxx-abi=new \
    --disable-libstdcxx-pch \
    --disable-libunwind-exceptions \
    --enable-__cxa_atexit \
    --disable-libssp \
    --enable-gnu-unique-object \
    --enable-plugin \
    --enable-lto \
    --disable-install-libiberty \
    --disable-werror \
    --with-gnu-ld \
    --with-isl \
    --verbose \
    --with-arch-directory=$LIB_ARCH \
    --disable-gtktest \
    --enable-clocale=gnu \
    $GCC_ARCHOPTS \
    --target=${TARGET} \
    --build=${TARGET} \
    --host=${TARGET} || failconfig

# Build:
make $NUMJOBS || failmake

# Install into package framework:
make -C gcc DESTDIR=$PKG jit.install-common jit.install-info || failinstall
popd

# Get rid of empty directories (harmless, but might as well clean up):
( cd $PKG/usr
  rmdir -p bin lib*/gcc/*/* man/man* )

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall        # strip all .a archives and all ELFs
#slackstriprpaths     # strip rpaths
slack_delete_lafiles # delete usr/lib{,64}/*.la
slackgzpages -i      # compress man & info pages and delete usr/info/dir
slackslack           # set standard Slackware file/dir permissions and ownerships
slackdesc            # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links