#!/bin/bash

usage() {
    echo "usage: `basename $0` [OPTIONS]"
    echo "  --threads NUM         The number of threads to use for running tests."
    echo "  --multilib-arch ARCH  Use this option to test 32-bit libs/binaries on"
    echo "                        64-bit hosts."
}

threads_arg=''

while [ $# -gt 0 ]; do
    case $1 in
        --threads)
            shift
            threads_arg="--threads $1"
            ;;
	--multilib-arch)
            shift
	    ARCH=$1
	    ;;
        * )
            echo "unknown option: $1"
            echo ""
            usage
            exit 1
            ;;
    esac
    shift
done

set -xe

if [ -z "$ARCH" ]; then
    ARCH=`rpm --eval '%_arch'`
fi

case $ARCH in
    arm)
	;&
    i686)
        LIB_DIR="/usr/lib/"
        ;;
    *)
        LIB_DIR="/usr/lib64/"
        ;;
esac

cd $(mktemp -d)
ln -s /usr/include include
tar -xzf /usr/share/llvm/src/test.tar.gz
ln -s $ARCH.site.cfg.py test/lit.site.cfg.py
ln -s $ARCH.site.cfg.py test/Unit/lit.site.cfg.py

# llvm_obj_root is used to determine the directory the tests will run in.
# test/MC/MachO/gen-dwarf.s fails if llvm_obj_root is a parent directory
# of the source file.  To workaround this, we set llvm_obj_root to a
# different directory than the one used to store the test sources.
# This also matches better how tests are run from the llvm source tree.
lit -v -s $threads_arg test \
	-Dllvm_obj_root=$(mktemp -d) \
	-Dllvm_test_root=`pwd`/test \
	-Dllvm_unittest_bindir=$LIB_DIR/llvm \
	-Dllvm_shlib_dir=$LIB_DIR