configure

#!/bin/sh

echo "Orocos configure script."

function usage
{
   echo "This script allows you to set the compiler."
   echo "Usage : ../configure [--prefix=/install/path][CC=compiler][CXX=compiler]"
}

function getcompiler
{
    arg=$1
    if [ $(expr match "$arg" "CC=") != 0 ]; then
	CMAKE_CC="$arg"
    fi

    if [ $(expr match "$arg" "CXX=") != 0 ]; then
	CMAKE_CXX="$arg"
    fi
    if [ $(expr match "$arg" "--prefix=") != 0 ]; then
	CMAKE_PREFIX="${arg:9}"
	CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=$CMAKE_PREFIX -DCMAKE_PREFIX_PATH=$CMAKE_PREFIX"
    fi
}

while [ "$1" != "" ]; do
    case $1 in
        -h | --help )           usage
                                exit
                                ;;
        * )                     getcompiler $1
    esac
    shift
done

if [ -f ./configure ]; then
   echo "Error: run configure from a 'build' directory:"
   echo " $ mkdir build"
   echo " $ cd build"
   echo " $ ../configure [options]"
   exit 1
fi

if [ -f ./CMakeCache.txt ]; then
   echo "Error: One can not change the compiler once configured !"
   echo "Error: In order to change the compiler, use a fresh build directory."
   exit 1
fi

if [ x$(which cmake) == x ]; then
   echo "Error: 'cmake' executable not found. Download it from http://www.cmake.org"
   echo "Error: or install the cmake package of your distribution version 2.6.2 or higher."
   exit 1
fi

echo "Invoking: 'CC=$CMAKE_CC CXX=$CMAKE_CXX cmake .. $CMAKE_ARGS'"

bash -c "$CMAKE_CC $CMAKE_CXX cmake .. $CMAKE_ARGS" || (echo "Error: cmake produced an error."; exit 1)

echo "OK: configure done."