AC_INIT(configure.in)

AM_CONFIG_HEADER(src/config.h)
AM_INIT_AUTOMAKE(osirion, 0.0.1)

AC_LANG_CPLUSPLUS
AC_PROG_CXX
AM_PROG_LIBTOOL

dnl KDE_FIND_PATH(programm-name, variable-name, list of directories,
dnl     if-not-found, test-parameter)
AC_DEFUN(KDE_FIND_PATH,
[
   AC_MSG_CHECKING([for $1])
   if test -n "$$2"; then
        kde_cv_path="$$2";
   else
        kde_cache=`echo $1 | sed 'y%./+-%__p_%'`

        AC_CACHE_VAL(kde_cv_path_$kde_cache,
        [
        kde_cv_path="NONE"
        dirs="$3"
        kde_save_IFS=$IFS
        IFS=':'
        for dir in $PATH; do
          dirs="$dirs $dir"
        done
        IFS=$kde_save_IFS

        for dir in $dirs; do
          if test -x "$dir/$1"; then
            if test -n "$5"
            then
              evalstr="$dir/$1 $5 2>&1 "
              if eval $evalstr; then
                kde_cv_path="$dir/$1"
                break
              fi
            else
                kde_cv_path="$dir/$1"
                break
            fi
          fi
        done

        eval "kde_cv_path_$kde_cache=$kde_cv_path"

        ])

      eval "kde_cv_path=\"`echo '$kde_cv_path_'$kde_cache`\""

   fi

   if test -z "$kde_cv_path" || test "$kde_cv_path" = NONE; then
      AC_MSG_RESULT(not found)
      $4
   else
      AC_MSG_RESULT($kde_cv_path)
      $2=$kde_cv_path

   fi
])

AC_MSG_CHECKING(whether to abort on compiler warnings)
WARN_CFLAGS=""
AC_ARG_ENABLE(warn,
        AC_HELP_STRING(
                [--disable-warn], [don't abort on compiler warnings]
        ),
        AC_MSG_RESULT(no),
        AC_MSG_RESULT(yes)
        WARN_CFLAGS="$WARN_CFLAGS -Wall -Werror"
)
AC_SUBST(WARN_CFLAGS)


AC_MSG_CHECKING(whether to include debug messages)
AC_ARG_ENABLE(debug_messages,
	AC_HELP_STRING(
		[--disable-debug-messages], [build without extra debug information]
	),
	AC_MSG_RESULT(no),
	AC_MSG_RESULT(yes)
	AC_DEFINE_UNQUOTED(HAVE_DEBUG_MESSAGES, 1, [Defines if debug information is enabled])
)

AC_CHECK_HEADER(GL/gl.h,
        HAVE_OPENGL=yes
        AC_DEFINE(HAVE_OPENGL, 1, [Define this if you have OpenGL]),
        HAVE_OPENGL=no
)

AC_CHECK_HEADER(GL/glext.h,
        HAVE_OPENGL_GLEXT=yes
        AC_DEFINE(HAVE_OPENGL_GLEXT, 1, [Define this if you have OpenGL Extensions]),
        HAVE_OPENGL_GLEXT=no,
        [#include <GL/gl.h>]
)

AC_CHECK_LIB(GL, glVertex3f, 
	GL_LIBS="$GL_LIBS -lGL"

)
AC_SUBST(GL_LIBS)
AC_SUBST(GL_CFLAGS)

AC_MSG_CHECKING([looking for SDL])
KDE_FIND_PATH(sdl-config, LIBSDL_CONFIG, [${prefix}/bin ${exec_prefix}/bin /usr/local/bin /opt/local/bin], [
  AC_MSG_WARN([Could not find libsdl anywhere, check http://www.sdl.org])
])

if test -n "$LIBSDL_CONFIG"; then
     LIBSDL_LIBS="`$LIBSDL_CONFIG --libs`"
     LIBSDL_RPATH=
     for args in $LIBSDL_LIBS; do
          case $args in
            -L*)
               LIBSDL_RPATH="$LIBSDL_RPATH $args"
               ;;
          esac
     done
     LIBSDL_RPATH=`echo $LIBSDL_RPATH | sed -e "s/-L/-R/g"`
     LIBSDL_CFLAGS="`$LIBSDL_CONFIG --cflags`"

     AC_DEFINE_UNQUOTED(HAVE_LIBSDL, 1, [Defines if your system has the LIBSDL library])
fi

AC_MSG_RESULT($HAVE_LIBSDL)

AC_SUBST(LIBSDL_LIBS)
AC_SUBST(LIBSDL_CFLAGS)
AC_SUBST(LIBSDL_RPATH)


CXXFLAGS="-pipe $DEBUG_CFLAGS $WARN_CFLAGS $CXXFLAGS"
AC_SUBST(CXXFLAGS)

AC_OUTPUT(Makefile src/Makefile src/client/Makefile src/core/Makefile \
	src/filesystem/Makefile src/game/Makefile src/gl/Makefile src/math/Makefile src/server/Makefile \
	src/sys/Makefile)

AC_MSG_RESULT([
The Osirion Project $VERSION

Configuration summary:
	platform ........... $host
	flags .............. $CXXFLAGS
	debug messages ..... $debug_messages

Installation directories:
	prefix ............. $PREFIX
	program binaries ... $BINDIR
	libraries .......... $LIBDIR
	data ............... $DATADIR
])