configure

#! /bin/bash

DEBUG=1
CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
CFLAGS="$CFLAGS -W -Wall -Wstrict-prototypes -pipe"
CFLAGS="$CFLAGS -Wfloat-equal -Wundef -Wshadow -Wpointer-arith"
CFLAGS="$CFLAGS -Wmissing-declarations -Wnested-externs"
CFLAGS="$CFLAGS -Wmissing-prototypes"
CXXFLAGS="$CXXFLAGS -W -Wall -pipe -Wundef -Wshadow -Wpointer-arith -Wabi -std=c++11"
LDFLAGS="$LDFLAGS"

if [[ -z "$CC" ]]; then
    CC=gcc
fi

if [[ -z "$CXX" ]]; then
    CXX=g++
fi

if [[ -z "$WINCC" ]]; then
    WINCC=winegcc
fi

if [[ -z "$WINCXX" ]]; then
    WINCXX=wineg++
fi

if [[ -z "$PREFIX" ]]; then
    PREFIX=/usr/local
fi

function usage()
{
    echo -n "usage: $0
  --release		disable debug
  --debug		enables debug

  --prefix=<dir>        the installation prefix path
"
    exit
}

until [[ $# -eq 0 ]] ;
do
    case "$1" in
	--release)
	    DEBUG=0
	    ;;
	--debug)
	    DEBUG=1
	    ;;
        --prefix=*)
            PREFIX="${1/--prefix=/}"
            ;;
	-h|--help|help)
	    usage
	    ;;
	*)
            echo wrong argument "$1"
	    usage
	    ;;
    esac
    shift
done

if [[ $DEBUG -eq 0 ]]; then
    CFLAGS="$CFLAGS -DNDEBUG -O2"
    CXXFLAGS="$CXXFLAGS -DNDEBUG -O2"
else
    CFLAGS="$CFLAGS -g"
    CXXFLAGS="$CXXFLAGS -g"
fi

CFLAGS="${CPPFLAGS} ${CFLAGS}"
CXXFLAGS="${CPPFLAGS} ${CXXFLAGS}"

cat >config.h <<EOF
#ifndef CONFIG_H
# define CONFIG_H

# define INSTALL_PREFIX "${PREFIX}"

#endif /* !CONFIG_H */
EOF

cat >config.mk <<EOF
CPPFLAGS = $CPPFLAGS
CFLAGS = $CFLAGS
CXXFLAGS = $CXXFLAGS
CC = $CC
CXX = $CXX
WINCC = $WINCC
WINCXX = $WINCXX
PREFIX = $PREFIX
EOF