#!/bin/sh

cd $(dirname $0)
TOP=$PWD

if [ -x llvm/configure ]; then
    echo "Will build llvm and clang from sources" 
    ln -sf ../../clang llvm/tools/clang
    mkdir -p llvm/_build
    (
	cd llvm/_build
	../configure --prefix=$TOP/_install --enable-optimized 
    )
    LLVM_CONFIG=$TOP/_install/bin/llvm-config
else
    echo "Using system-wide llvm and clang"
    LLVM_CONFIG=llvm-config
fi

cat <<EOF > $TOP/Makefile.config
LLVM_CONFIG := $LLVM_CONFIG
EOF

echo "Now run make to compile everything"