#!/bin/sh

cd $(dirname $0) ; CWD=$(pwd)
PKGNAM=hcc
#VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
VERSION=5.1.1
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O3 -march=native -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi


NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}


# Set to 1 if you'd like to install/upgrade package as they are built.
# This is recommended.
#INST=1

TMP=${TMP:-/tmp}
PKG=$TMP/package-${PKGNAM}
rm -rf $PKG
mkdir -p $TMP $PKG
#cp -a $CWD/${PKGNAM} 

cd $TMP || exit 1
rm -rf ${PKGNAM}-${VERSION}
#tar xvf $CWD/${PKGNAM}-$VERSION.tar.?z* || exit 1
cp -a $CWD/${PKGNAM} ${PKGNAM}-$VERSION
cd ${PKGNAM}-$VERSION || exit 1

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 {} \;

# Build, and install ROCt
#cd ${SOURCE_DIR}/ROCT-Thunk-Interface/
mkdir -p build
cd build


#export CMAKE_PREFIX_PATH=${ROCM_INPUT_DIR}/include/hsa:${ROCM_INPUT_DIR}/lib

#export CMAKE_BUILD_TYPE="Release"
#export CMAKE_DEBUG_TRACE=0


#cmake .. -DCMAKE_BUILD_TYPE=${ROCM_CMAKE_BUILD_TYPE} -DCMAKE_INSTALL_PREFIX=${ROCM_OUTPUT_DIR}/ -DCPACK_PACKAGING_INSTALL_PREFIX=${ROCM_OUTPUT_DIR}/ -DCPACK_GENERATOR=RPM ${ROCM_CPACK_RPM_PERMISSIONS}
#make -j `nproc`
#make -j `nproc` build-dev

CXXFLAGS="$SLKCFLAGS" \
CFLAGS="$SLKCFLAGS" \
cmake \
  -DCMAKE_INSTALL_PREFIX=/usr/hcc/ \
  -DCMAKE_BUILD_TYPE=Release \
  -DCMAKE_LIBRARY_PATH=${PKGNAM}-$VERSION/lib${LIBDIRSUFFIX} \
  -DCMAKE_INCLUDE_PATH=${PKGNAM}-$VERSION/include \
  -DCMAKE_PREFIX_PATH=${PKGNAM}-$VERSION/ \
  -DLLVM_USE_LINKER=gold \
  -DCLANG_ANALYZER_ENABLE_Z3_SOLVER=OFF \
  -DLLVM_ENABLE_ASSERTIONS=OFF \
  .. || exit 1


MEM_AVAIL=`cat /proc/meminfo | grep MemTotal | awk {'print $2'}`
AVAIL_THREADS=`nproc`

# Give about 4 GB to each building thread
MAX_THREADS=`echo $(( ${MEM_AVAIL} / $(( 1024 * 1024 * 4 )) ))`
if [ ${MAX_THREADS} -lt ${AVAIL_THREADS} ]; then
    NUM_BUILD_THREADS=${MAX_THREADS}
else
    NUM_BUILD_THREADS=${AVAIL_THREADS}
fi
if [ ${NUM_BUILD_THREADS} -lt 1 ]; then
    NUM_BUILD_THREADS=1
fi

make -j ${NUM_BUILD_THREADS} || exit 1

make install DESTDIR=$PKG || exit 1


#cmake --build . --target install

# Back to source tarball root directory:
cd $CWD

find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null


cd $PKG
/sbin/makepkg -l y -c n $TMP/${PKGNAM}-$VERSION-$ARCH-$BUILD.txz