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

# libclc.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter for Slackware ARM.
#
# Copyright 2016  Heinz Wiesinger, Amsterdam, The Netherlands
# Copyright 2017-2027  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.

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

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

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

# Extract source:
#tar xvvf $CWD/$PKGNAM*src*.tar.!(*sign|*asc|*sig)
tar xf $CWD/llvmorg-$VERSION.tar.?z llvm-project-llvmorg-$VERSION/libclc || tar xf $CWD/llvmorg-$VERSION.tar.?z llvmorg-$VERSION/libclc
cd llvm*/libclc || failextract
slackhousekeeping

for TARGET in spirv32-unknown-unknown spirv64-unknown-unknown amdgcn-amd-amdhsa nvptx64-nvidia-cuda ; do
  # Configure, build, and install:
  mkdir cmake-build
  cd cmake-build
    cmake \
      -DCMAKE_C_FLAGS="$SLKCFLAGS" \
      -DCMAKE_CXX_FLAGS="$SLKCFLAGS" \
      -DCMAKE_INSTALL_PREFIX=/usr \
      -DCMAKE_C_COMPILER=clang \
      -DCMAKE_CXX_COMPILER=clang++ \
      -DLIB_SUFFIX="$LIBDIRSUFFIX" \
      -DDOC_INSTALL_DIR="doc" \
      -DMAN_INSTALL_DIR=/usr/man \
      -DLLVM_DEFAULT_TARGET_TRIPLE=$TARGET \
      .. || failconfig
    make $NUMJOBS || make || failmake
    make install DESTDIR=$PKG || failinstall
  cd ..
done

# Add a pkgconfig file:
if [ ! -r $PKG/usr/share/pkgconfig/libclc.pc ]; then
  mkdir -p $PKG/usr/share/pkgconfig
  cat $CWD/libclc.pc | sed "s/@@VERSION@@/$VERSION/g" > $PKG/usr/share/pkgconfig/libclc.pc
fi

# Mesa looks for these names:
( cd $PKG/usr/share/clc ; ln -sf spirv64-unknown-unknown/libclc.spv spirv64-mesa3d-.spv )
( cd $PKG/usr/share/clc ; ln -sf spirv32-unknown-unknown/libclc.spv spirv-mesa3d-.spv )
# Add documentation:
mkdir -vpm755 $PKG/usr/doc/$PKGNAM-$VERSION
cp -fav *.{txt,md,TXT,rst}
  $PKG/usr/doc/$PKGNAM-$VERSION
changelogliposuction ChangeLog $PKGNAM $VERSION # Trim down a "ChangeLog" file
rm -f $PKG/usr/doc/$PKGNAM-$VERSION/CMakeLists.txt

# 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
# We copy the slackdesc directly, because the 'libclc'
# directory in Slackware's source is a symlink to 'd/llvm'
mkdir -vpm755 $PKG/install
install -vpm644 $CWD/slack-desc.libclc $PKG/install/slack-desc
slackmp         # run makepkg -l y -c n

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