#!/bin/bash

ROOT_DIR=$(dirname $0)

cat > ./mic-config.log << EOF
This file was created by StarPU mic-configure

 $ $0 $*
EOF

prefix="/usr/local"
coi_dir="/opt/intel/mic/coi"
scif_dir="/opt/intel/mic/scif"
mic_host="x86_64-k1om-linux"
native_mic=0
for arg in $*
do
	case $arg in
		--prefix=*)
			prefix="${arg#--prefix=}"
			;;
		--with-coi-dir=*)
			coi_dir="${arg#--with-coi-dir=}"
			;;
		--with-scif-dir=*)
			scif_dir="${arg#--with-scif-dir=}"
			;;
		--mic-host=*)
			mic_host="${arg#--mic-host=}"
			;;
	        --enable-native-mic)
		        native_mic=1
		        ;;
	esac
done

# Test gcc compiler
x=$(type -t ${mic_host}-gcc)
if [ -z "$x" ]
then
    # Test icc compiler
    echo "int main(int argc, char **argv) { return 0; }" > /tmp/icc_$USER_$$.c
    icc -mmic /tmp/icc_$USER_$$.c > /dev/null 2>/tmp/icc_$USER_$$.err
    l=$(grep -c "invalid argument" /tmp/icc_$USER_$$.err)
    if [ "$l" != "0" ]
    then
        echo "[error] no compiler found. please add path to either ${mic_host}-gcc or to an enabled mic icc compiler in your PATH"
	exit 1
    else
	compiler="icc"
    fi
else
    compiler="gcc"
fi

dev_list="host mic"
if [ "$native_mic" -eq "1" ]
then
    dev_list="mic"
fi

for arch in $dev_list #host mic
do
	# We call the configure script from a build directory further in the
	# arborescence

	case $ROOT_DIR in
		/*) command="${ROOT_DIR}/configure";;
		*) command="../${ROOT_DIR}/configure";;
	esac

	if [ $compiler = "icc" -a "$arch" = "mic" ] ; then
	    export CC="icc -mmic"
	    export CXX="icc -mmic"
	fi

	params="--with-coi-dir=$coi_dir --with-scif-dir=$scif_dir --prefix=$prefix/$arch"

	if test x$arch = xmic ; then
	    if [ "$native_mic" -eq "1" ]
	    then
		params="$params --disable-build-doc --with-coi-lib-dir=$coi_dir/device-linux-release/lib --with-scif-lib-dir=$scif_dir/device-linux-release/lib --host=$mic_host --enable-maxcpus=250"
	    else
		# TODO: fix hwloc detection to look for another pkg-config place, and not just believe in the host version of hwloc.pc...
		params="$params --enable-mic --disable-build-doc -without-hwloc --with-coi-lib-dir=$coi_dir/device-linux-release/lib --with-scif-lib-dir=$scif_dir/device-linux-release/lib --host=$mic_host"
	    fi
	else
		params="$params --with-coi-lib-dir=$coi_dir/host-linux-release/lib --with-scif-lib-dir=$scif_dir/host-linux-release/lib"
	fi

	# If the build directory doesn't exist yet, create it
	if [ ! -d "build_${arch}" ] ; then
		mkdir "build_${arch}"
	fi

	cd "build_${arch}"

	if test x$arch = xmic ; then
		LDFLAGS=-export-dynamic $command $* $params
	else
		$command $* $params
	fi
	if [ "$?" != 0 ]
	then
		exit $?
	fi
	cd ..
done
if [ "$native_mic" -eq "1" ]
then
cat > Makefile << EOF
all:
	\$(MAKE) -C build_mic

clean:
	\$(MAKE) -C build_mic clean

distclean: clean
	rm -f Makefile

check:
	\$(MAKE) -C build_mic check

showcheck:
	\$(MAKE) -C build_mic showcheck

install:
	\$(MAKE) -C build_mic install
	ln -sf "${prefix}/mic/lib/pkgconfig/starpu-1.2.pc" "${prefix}/mic/lib/pkgconfig/starpu-1.2-mic.pc"
EOF
else
cat > Makefile << EOF
all:
	\$(MAKE) -C build_host
	\$(MAKE) -C build_mic

clean:
	\$(MAKE) -C build_host clean
	\$(MAKE) -C build_mic clean

distclean: clean
	rm -f Makefile

check:
	\$(MAKE) -C build_host check
	\$(MAKE) -C build_mic check

showcheck:
	\$(MAKE) -C build_host showcheck
	\$(MAKE) -C build_mic showcheck

install:
	\$(MAKE) -C build_host install
	\$(MAKE) -C build_mic install
	ln -sf "${prefix}/mic/lib/pkgconfig/starpu-1.2.pc" "${prefix}/mic/lib/pkgconfig/starpu-1.2-mic.pc"
EOF
fi