#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

#AC_PREREQ(2.56)
AC_INIT(orxonox, 0.1-pre-alpha, orxonox-dev@mail.datacore.ch)

# Detect the canonical host and target build environment.
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AC_CANONICAL_TARGET


AM_INIT_AUTOMAKE

AC_CONFIG_SRCDIR([.])
AC_CONFIG_HEADER([config.h])


# Checks for programs.
AC_PROG_CXX
AC_HEADER_STDC

### CHECKING  OPTIONAT ARGUMENTS
## DEBUG-statement
DEBUG=no
AC_MSG_CHECKING([if DEBUG-mode should be enabled])
AC_ARG_WITH([debug], 
	AC_HELP_STRING(	[--with-debug], [compiles GTK in debug mode. Lots of Debug info about the game]),
	 [DEBUG=yes]) 
echo "$DEBUG"
if test "$DEBUG" = yes; then 
	AC_DEFINE_UNQUOTED(DEBUG, 1, [if we ar in Debug Mode])
fi
AC_SUBST(DEBUG)


## GTK-disabled
def_gtk=yes
AC_MSG_CHECKING([if gtk should be enabled])
AC_ARG_ENABLE([gtk], 
	AC_HELP_STRING(	[--disable-gtk], 
	[Prevents GTK from being loaded]), [def_gtk=no]) 
if test "$def_gtk" = yes; then 
  echo "yes"
fi 
if test "$def_gtk" = no; then 
  echo "no"
fi
### SDL_image-disable
def_sdl_image=yes
AC_MSG_CHECKING([if SDL_image should be enabled])
AC_ARG_ENABLE([sdl_image], 
	AC_HELP_STRING(	[--disable-sdl-image], 
	[Prevents SDL_image from being loaded]), [def_sdl_image=no]) 
if test "$def_sdl_image" = yes; then 
  echo "yes"
fi 
if test "$def_sdl_image" = no; then 
  echo "no"
fi

### CHECKING FOR SYSTEM ###

AC_MSG_CHECKING([for System])
## checking for openGL-environment and other sys-specific parameters
case "$target" in
### WINDOWS ###
  *-*-mingw32*)
echo "mingw-WINDOWS detected"

    mingw="yes"
    MSBITFIELDS="-mms-bitfields"
    MWINDOWS="-mwindows"

# checking gl header
	#done before loop

# checking gl header
   AC_CHECK_HEADERS(GL/gl.h ,,
      [AC_MSG_ERROR([cannot find opengl headers]) ])
#   checking for Windows openGl library
    AC_CHECK_LIB([opengl32], [main], FOUND_opengl32=yes, "gl/gl.h")
    if test "$FOUND_opengl32" = "yes" ; then
	LIBS="$LIBS -lopengl32"
    else
	 echo "------------------"
	 echo "opengl not found."
	 echo "please install the opengl package which can be found at http://www.opengl.org"
	 echo "------------------"
	 exit -1
    fi

# cheking for GLU-header
    AC_CHECK_HEADERS(GL/glu.h ,,
      [AC_MSG_ERROR([cannot find opengl headers]) ])

# checking for libGLU
    AC_CHECK_LIB([glu32], [main], FOUND_glu32=yes)
    if test "$FOUND_glu32" = "yes" ; then
	LIBS="$LIBS -lGLU32"
    else
	 echo "------------------"
	 echo "GLU library not found."
	 echo "please install the GLU library, that should come with openGL, which can be found at http://www.opengl.org"
	 echo "------------------"
	 exit -1
    fi

# checking for mingw32
    AC_CHECK_LIB([mingw32], [main], FOUND_mingw32=yes)
    if test $FOUND_mingw32 = "yes"; then 
	LIBS="$LIBS -lmingw32"
    fi
# checking for SDL-headers
    AC_CHECK_HEADERS(SDL/SDL.h ,,
      [AC_MSG_ERROR([cannot find SDL headers]) ])

#checking for libSDL
    AC_CHECK_LIB([sdlmain], [main], FOUND_sdlmain=yes)
    if test "$FOUND_sdlmain" = "yes" ; then
       LIBS="$LIBS -lsdlmain"
    else
        echo "------------------"
        echo "SDL library not found."
        echo "please install the SDL library, which can be found at http://www.libsdl.org"
        echo "------------------"
        exit 1
    fi
    AC_CHECK_LIB([sdl], [main], FOUND_sdl=yes)
    if test "$FOUND_sdl" = "yes" ; then
       LIBS="$LIBS -lsdl"
    else
        echo "------------------"
        echo "SDL library not found."
        echo "please install the SDL library, which can be found at http://www.libsdl.org"
        echo "------------------"
        exit -1
    fi

    ;;

### LINUX ###
 *-*-linux*)
echo "Linux detected"

 Linux="yes"

# checking gl header
   AC_CHECK_HEADERS(GL/gl.h ,,
      [AC_MSG_ERROR([cannot find opengl headers]) ])

#  checking for Unix GL
   AC_CHECK_LIB([GL], [main], FOUND_GL=yes)
   if test "$FOUND_GL" = "yes" ; then
     LIBS="$LIBS -lGL"
   else
	 echo "------------------"
	 echo "opengl not found."
	 echo "please install the opengl package which can be found at http://www.opengl.org"
	 echo "------------------"
	 exit -1
   fi

# cheking for GLU-header
    AC_CHECK_HEADERS(GL/glu.h ,,
      [AC_MSG_ERROR([cannot find opengl headers]) ])

    AC_CHECK_LIB([GLU], [gluProject], FOUND_GLU=yes)
    if test "$FOUND_GLU" = "yes" ; then
      LIBS="$LIBS -lGLU"
    else
	 echo "------------------"
	 echo "GLU library not found."
	 echo "please install the GLU library, that should come with openGL, which can be found at http://www.opengl.org"
	 echo "------------------"
	 exit -1
    fi   

# checking for SDL-headers
    AC_CHECK_HEADERS(SDL/SDL.h ,,
      [AC_MSG_ERROR([cannot find SDL headers]) ])

# checking for SDL-lib
    AC_CHECK_LIB([SDL], [main], FOUND_SDL=yes)
     if test "$FOUND_SDL" = "yes" ; then
       LIBS="$LIBS -lSDL"
     else
        echo "------------------"
        echo "SDL library not found."
	echo "please install the SDL library, which can be found at http://www.libsdl.org"
        echo "------------------"
        exit -1
     fi   


## checking for SDL
#    SDL_VERSION=1.2.7
#    AM_PATH_SDL($SDL_VERSION,
#      :,
#      AC_MSG_ERROR([*** SDL version $SDL_VERSION not found!])
#      )
#    CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
#    LIBS="$LIBS $SDL_LIBS"
    ;;

### OS X ###
 *darwin*)
echo "OS X detected"

 osX="yes"

 CPPFLAGS="-I/sw/include $CPPFLAGS"
# checking gl header
   AC_CHECK_HEADERS(OpenGL/gl.h ,,
      [AC_MSG_ERROR([cannot find opengl headers]) ])
# cheking for GLU-header
    AC_CHECK_HEADERS(OpenGL/glu.h ,,
      [AC_MSG_ERROR([cannot find opengl headers]) ])

   LIBS="$LIBS -framework OpenGL"

# checking for SDL-headers
#    AC_CHECK_HEADERS(SDL/SDL.h ,,
#      [AC_MSG_ERROR([cannot find SDL headers]) ])

## checking for SDL
#    SDL_VERSION=1.2.7
#    AM_PATH_SDL($SDL_VERSION,
#      :,
#      AC_MSG_ERROR([*** SDL version $SDL_VERSION not found!])
#      )

       SDL_CFLAGS=`sdl-config --cflags`
       SDL_LIBS=`sdl-config --libs`
       CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
       LIBS="$LIBS $SDL_LIBS"

    ;;

  *)
    ;;
esac

AC_SUBST(MSBITFIELDS)

## check for SDL_Image
if test "$def_sdl_image" = "yes"; then
# checking for SDL_image-headers
  AC_CHECK_HEADERS(SDL/SDL_image.h ,,
      [echo "sdl_image not found. falling back to other options"; sdl_image_second_check=yes ])
  if test "$sdl_image_second_check" = yes ; then
   AC_CHECK_HEADERS(SDL_image.h ,,
       [echo "sdl_image not found. falling back to other options"; def_sdl_image=no ])
  fi
fi


if test "$def_sdl_image" = "yes"; then
# checking for SDL_image-lib
  AC_CHECK_LIB([SDL_image], [main], FOUND_SDL_image=yes)
     if test "$FOUND_SDL_image" = "yes" ; then
       LIBS="$LIBS -lSDL_image"
       AC_DEFINE_UNQUOTED(HAVE_SDL_IMAGE, 1, [if we have SDL-image])
     else
        echo "------------------"
        echo "SDL_image library not found."
	echo "please install the SDL_image library, which can be found at http://www.libsdl.org/projects/SDL_image/"
        echo "------------------"
        exit -1
     fi   
fi


if test "$def_sdl_image" = "no"; then
 ## checking for libjpeg
 AC_CHECK_HEADERS(jpeglib.h ,jpegHeader="yes",
        jpegHeader="no")
 if test $jpegHeader = "no"; then
	echo " not including jpeg."
 else
  AC_CHECK_LIB([jpeg], [main], FOUND_jpeg=yes)
    if test "$FOUND_jpeg" = "yes" ; then
      LIBS="$LIBS -ljpeg"
    else
	 echo "------------------"
	 echo "jpeg library not found."
	 echo "please install the jpeg library from the Independent JPEG Group, which can be found at http://www.ijg.org"
	 echo "------------------"
	 exit -1
    fi   
 fi

 ## checking for libpng
 AC_CHECK_HEADERS(png.h ,pngHeader="yes",
        pngHeader="no")
 if test $pngHeader = "no"; then
	echo " not including png."
 else
  AC_CHECK_LIB([png], [main], FOUND_png=yes)
    if test "$FOUND_png" = "yes" ; then
      LIBS="$LIBS -lpng"
    else
	 echo "------------------"
	 echo "png library not found."
	 echo "please install the png library, which can be found at http://libpng.org/pub/png/libpng.html"
	 echo "------------------"
	 exit -1
    fi
 fi   
fi

## checking for GTK
if test "$def_gtk" = yes; then 

	#PKG_CHECK_MODULES(GTK2, gtk+-2.0 >= 2.0.3 gthread-2.0 >= 2.0.3, have_gtk2=yes, have_gtk2=no)
	AC_MSG_CHECKING([for gtk2.0])
	if `pkg-config --exists gtk+-2.0`; then
  		echo "yes"
  		have_gtk2=yes
		GTK2_LIBS=`pkg-config --libs gtk+-2.0`
		GTK2_CFLAGS=`pkg-config --cflags gtk+-2.0`
		AC_DEFINE_UNQUOTED(HAVE_GTK2, 1, [if we have GTK2])
	else
		echo "no"
	fi

fi
AC_SUBST(GTK2_LIBS)
AC_SUBST(GTK2_CFLAGS)
AM_CONDITIONAL(HAVE_GTK2, test x$have_gtk2 = xyes)



#checking for pthread libs
 AC_CHECK_LIB([pthread], [main], FOUND_pthread=yes)
 if test "$FOUND_pthread" = "yes" ; then
    LIBS="$LIBS -lpthread"
 fi


# FIXME: Replace `main' with a function in `-lm':
 AC_CHECK_LIB([m], [main])

 
# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([stdlib.h string.h])

# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL

# Checks for library functions.
AC_FUNC_MALLOC
AC_CHECK_FUNCS([bzero sqrt])

AC_CONFIG_FILES([Makefile
		 console/Makefile
                 gui/Makefile
                 src/Makefile
		 importer/Makefile])
AC_OUTPUT