#!/bin/bash
# gnatcoll-core package build script (written by zhu.qunying@gmail.com)
# Copyright 2012-2024, Zhu Qun-Ying
# 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.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=gnatcoll-core
VERSION=${VERSION:-25.0.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$(uname -m)" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
    *) ARCH=$(uname -m) ;;
  esac
  export ARCH
fi

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-"/tmp/SBo"}
PKG=${TMP}/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
else
  SLKCFLAGS="-O2"
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
mkdir $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz -C $PRGNAM-$VERSION --strip-components=1

cd $PRGNAM-$VERSION
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \; || exit 1

ADA_FLAGS="$SLKCFLAGS"
ADA_FLAGS="${ADA_FLAGS//-Wformat}"
ADA_FLAGS="${ADA_FLAGS//-Werror=format-security}"

patch -p1 < $CWD/compiler-error.patch

COMMON_OPTIONS="-XGNATCOLL_BUILD_MODE=PROD \
-XGNATCOLL_VERSION=$VERSION -XGNATCOLL_OS=unix "

GPRINSTALL_OPTIONS="$COMMON_OPTIONS -p -f --prefix=$PKG/usr"
GPRBUILD_OPTIONS="-R $COMMON_OPTIONS \
-cargs $ADA_FLAGS -largs -s $LDFLAGS -gargs"

sed -i 's/0.0/25.0.0/' core/config/gnatcoll_core_constants.gpr

# upstream's build system too complicated to modified
# build options. Use gprbuild directly and closely follow how upstream is built
mkdir -p $PKG/usr/share/gpr
export GPR_PROJECT_PATH="/usr/share/gpr:$PKG/usr/share/gpr"
lib_types=(static relocatable static-pic)
for lib in ${lib_types[@]} ; do
    gprbuild -j0 $GPRBUILD_OPTIONS -XLIBRARY_TYPE=$lib \
	    -P minimal/gnatcoll_minimal.gpr
    gprinstall $GPRINSTALL_OPTIONS -XLIBRARY_TYPE=$lib \
	    --sources-subdir=include/gnatcoll_minimal \
	    --build-name=$lib --build-var=LIBRARY_TYPE \
	    -P minimal/gnatcoll_minimal.gpr
    gprbuild -j0 $GPRBUILD_OPTIONS -XLIBRARY_TYPE=$lib \
	     -XGNATCOLL_BLAKE3_ARCH="$ARCH-linux" \
	     -XGNATCOLL_XXHASH_ARCH="$ARCH" \
	     -XGNATCOLL_MMAP="yes" -XGNATCOLL_MADVISE="yes" \
	     -P core/gnatcoll_core.gpr
    gprinstall $GPRINSTALL_OPTIONS -XLIBRARY_TYPE=$lib \
	    --sources-subdir=include/gnatcoll_core \
	    --build-name=$lib --build-var=LIBRARY_TYPE \
	     -XGNATCOLL_BLAKE3_ARCH="$ARCH-linux" \
	     -XGNATCOLL_XXHASH_ARCH="$ARCH" \
	     -XGNATCOLL_MMAP="yes" -XGNATCOLL_MADVISE="yes" \
	     -P core/gnatcoll_core.gpr
    gprbuild -j0 $GPRBUILD_OPTIONS -XLIBRARY_TYPE=$lib \
	    -P projects/gnatcoll_projects.gpr
    gprinstall $GPRINSTALL_OPTIONS -XLIBRARY_TYPE=$lib \
	    --sources-subdir=include/gnatcoll_projects \
	    --build-name=$lib --build-var=LIBRARY_TYPE \
	    -P projects/gnatcoll_projects.gpr
done

sed -e 's/^--  with "gnatcoll_projects"/with "gnatcoll_projects"/g' gnatcoll.gpr > $PKG/usr/share/gpr/gnatcoll.gpr

make -C docs html
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a ./docs/_build/html $PKG/usr/doc/$PRGNAM-$VERSION
rm -rf $PKG/usr/doc/$PRGNAM-$VERSION/html/_sources

cp README.md COPYING* $PKG/usr/doc/$PRGNAM-$VERSION
cp $CWD/$PRGNAM.SlackBuild $PKG/usr/doc/$PRGNAM-$VERSION

mkdir -p $PKG/install
cp $CWD/slack-desc $PKG/install

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-${VERSION}-$ARCH-$BUILD$TAG.$PKGTYPE