########################################################################## 
#   orxonox - the future of 3D-vertical-scrollers			 #
#									 #
#   Copyright (C) 2004 orx						 #
#									 #
#   This program is free software; you can redistribute it and/or modify #
#   it under the terms of the GNU General Public License as published by #
#   the Free Software Foundation; either version 2, or (at your option)  #
#   any later version.							 #
#									 #
#   ### File Specific:							 #
#   main-programmer: Benjamin Grauer					 #
#   co-programmer: ...							 #
#									 #
#   This is the main configuration File of autoconf.			 #
#   Please edit this file only, if you exactly know what you are doing.  #
#   It is quite fragile, and compiling orxonox on different Platforms    #
#   is only guarantied, if build with the right config.                  #
##########################################################################

#########################
## AUTOCONF INIT PHASE ##
#########################
AC_PREREQ(2.56)
AC_INIT(orxonox, 0.2.2-pre-alpha, [orxonox-dev at 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  OPTIONAL ARGUMENTS ##
##################################

#-----------------#
# DEBUG-statement #
#-----------------#
DEBUG=no
AC_MSG_CHECKING([if DEBUG-mode should be enabled])
AC_ARG_ENABLE([debug], 
	AC_HELP_STRING(	[--enable-debug], [compiles in debug mode. Lots of debug info about the game.]),
	 DEBUG=$enableval)

if test x$DEBUG = xno; then 
	echo "no"
	echo " -> Setting debuglevel to 3. (orxonox is still in Development. It really is needed."
	DEBUG=3
elif test x$DEBUG = xyes; then
	echo "yes"
	echo " -> Setting debuglevel to 4. HARD DEBUG MODE!!."
	DEBUG=4
else       
	echo "yes: setting debuglevel to to $DEBUG"
fi
	AC_DEFINE_UNQUOTED(DEBUG, $DEBUG, [in which debug mode we are])

AC_SUBST(DEBUG)

#--------------#
# GTK-disabled #
#--------------#
AC_MSG_CHECKING([if gtk should be enabled])
AC_ARG_WITH([gtk], 
	AC_HELP_STRING(	[--without-gtk], 
	[Prevents GTK from being loaded]), [def_gtk=no], [def_gtk=yes]) 
if test x$def_gtk = xyes; then 
  echo "yes"
fi 
if test x$def_gtk = xno; then 
  echo "no"
fi

#------------------#
# gThread-disabled #
#------------------#
AC_MSG_CHECKING([if gThread should be enabled])
AC_ARG_WITH([gthread], 
	AC_HELP_STRING(	[--without-gthread],
	[Prevents gThread from being loaded]), [def_gthread=no], [def_gthread=yes]) 
if test x$def_gthread = xyes; then 
  echo "yes"
fi 
if test x$def_gthread = xno; then 
  echo "no"
fi

#------------------#
# pthread-disabled #
#------------------#
AC_MSG_CHECKING([if pthread should be enabled])
AC_ARG_WITH([pthread], 
	AC_HELP_STRING(	[--without-pthread], 
	[Prevents pthread from being loaded]), [def_pthread=no], [def_pthread=yes]) 
if test x$def_pthread = xyes; then 
  echo "yes"
fi 
if test x$def_pthread = xno; then 
  echo "no"
fi

#------------------#
# libCurl-disabled #
#------------------#
AC_MSG_CHECKING([if libcURL should be enabled])
AC_ARG_WITH([curl], 
	AC_HELP_STRING(	[--without-curl], 
	[Prevents libcURL from being loaded]), [def_curl=no], [def_curl=yes]) 
if test x$def_curl = xyes; then 
  echo "yes"
fi 
if test x$def_curl = xno; then 
  echo "no"
fi

#-------------------#
# SDL_image-disable #
#-------------------#
def_sdl_image=yes
AC_MSG_CHECKING([if SDL_image should be enabled])
AC_ARG_WITH([sdl_image], 
	AC_HELP_STRING(	[--without-sdl-image], 
	[Prevents SDL_image from being loaded]), [def_sdl_image=no]) 
if test x$def_sdl_image = xyes; then 
  echo "yes"
fi 
if test x$def_sdl_image = xno; then 
  echo "no"
fi

#-------------------#
# SubProject-enable #
#-------------------#
def_sub_projects=no
AC_MSG_CHECKING([if the SubProjects should be built])
AC_ARG_ENABLE([sub-projects], 
	AC_HELP_STRING(	[--enable-sub-projects], 
	[also builds the subProjects while make from srcdir]), [def_sub_projects=yes]) 
if test x$def_sub_projects = xyes; then
  echo "yes"
fi 
if test x$def_sub_projects = xno; then
  echo "no"
fi
AM_CONDITIONAL(SUB_PROJECTS, test x$def_sub_projects = xyes)

#----------------------#
# Documentation-enable #
#----------------------#
def_documentation=no
AC_MSG_CHECKING([if the Documentation should be build by default])
AC_ARG_ENABLE([documentation], 
	AC_HELP_STRING(	[--enable-documentation], 
	[also builds the sDocumentation while make from srcdir]), [def_documentation=yes]) 
if test x$def_documentation = xyes; then
  echo "yes"
fi 
if test x$def_documentation = xno; then
  echo "no"
fi
AM_CONDITIONAL(DOCUMENTATION, test x$def_documentation = xyes)
#######################
## PROGRAMM CHECKING ##
## 3. party Programs ##
#######################

#----------------------#
# checking for Doxygen #
#----------------------#
AC_PATH_PROG(DOXYGEN, doxygen)
AM_CONDITIONAL(DOXYGEN, test $DOXYGEN)

#########################
## CHECKING FOR SYSTEM ##
#########################
## here the system is checked, and openGL is included
## also checking for SDL on differen Systems

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 x$FOUND_opengl32 = xyes ; then
	LIBS="$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 x$FOUND_glu32 = xyes ; then
	LIBS="$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 x$FOUND_mingw32 = xyes; then 
	LIBS="$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 x$FOUND_sdlmain = xyes ; then
       LIBS="$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 x$FOUND_sdl = xyes ; then
       LIBS="$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"

CPPFLAGS="-I/usr/X11R6/include"
LDFLAGS="-L/usr/lib/opengl/xorg-x11/lib -L/usr/Mesa-6.0.1/lib -L/usr/X11R6/lib $LDFLAGS"
# checking gl header
   AC_CHECK_HEADERS([GL/gl.h] ,,
      [AC_MSG_ERROR([cannot find opengl headers]) ])

#  checking for Unix GL
   AC_CHECK_LIB([GL], [glLoadIdentity], FOUND_GL=yes)
   if test x$FOUND_GL = xyes ; then
     LIBS="$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 x$FOUND_GLU = xyes ; then
      LIBS="$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 x$FOUND_SDL = xyes ; then
       LIBS="$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"
    ;;
#-----------#
# MAC -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"

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


# 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!])
#      )


    ;;

  *)
    ;;
esac

AC_SUBST(MSBITFIELDS)

###################################
## CHECKING FOR HEADERS AND LIBS ##
###################################

#-----------#
# SDL_Image #
#-----------#
if test x$def_sdl_image = xyes; then
# checking for SDL_image-headers
  AC_CHECK_HEADERS([SDL/SDL_image.h] ,,
      [echo "sdl_image not found. falling back to other options"; def_sdl_image=no ])
fi
if test x$def_sdl_image = xyes; then
# checking for SDL_image-lib
  AC_CHECK_LIB([SDL_image], [main], [FOUND_SDL_image=yes])
     if test x$FOUND_SDL_image = xyes ; then
       LIBS="$LIBS -lSDL_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

## case no SDL-image:
if test x$def_sdl_image = xno; then
#---------#
# libjpeg #
#---------#
 AC_CHECK_HEADERS([jpeglib.h], [jpegHeader="yes"],
        [jpegHeader="no"])
 if test x$jpegHeader = xno; then
	echo " not including jpeg."
 else
  AC_CHECK_LIB([jpeg], [main], [FOUND_jpeg=yes])
    if test x$FOUND_jpeg = xyes ; then
      LIBS="$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

#--------#
# libpng #
#--------#
 AC_CHECK_HEADERS([png.h], [pngHeader="yes"],
        [pngHeader="no"])
 if test x$pngHeader = xno; then
	echo " not including png."
 else
  AC_CHECK_LIB([png], [main], FOUND_png=yes)
    if test x$FOUND_png = xyes ; 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

#-----#
# GTK #
#-----#
if test x$def_gtk = xyes; 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)

#---------#
# gThread #
#---------#
if test x$def_gthread = xyes; then 

	AC_MSG_CHECKING([for gthread])
	if `pkg-config --exists gthread-2.0`; then
  		echo "yes"
  		have_gthread=yes
		GTHREAD_LIBS=`pkg-config --libs gthread-2.0`
		GTHREAD_CFLAGS=`pkg-config --cflags gthread-2.0`
		AC_DEFINE_UNQUOTED(HAVE_GTHREAD, 1, [if we have gThread])
	else
		echo "no"
	fi

fi
AC_SUBST(GTHREAD_LIBS)
AC_SUBST(GTHREAD_CFLAGS)
AM_CONDITIONAL(HAVE_GTHREAD, test x$have_gthread = xyes)

#---------#
# libcURL #
#---------#
if test x$def_curl = xyes; then 

 AC_CHECK_HEADERS([curl/curl.h], [curlHeader="yes"], [curlHeader="no"])
 AC_CHECK_LIB([curl], [main], [FOUND_curl=yes])
 if test x$curlHeader = xyes & test x$FOUND_curl = xyes ; then
  have_curl=yes
  CURL_LIBS=`curl-config --libs`
  CURLCFLAGS=`curl-config --cflags`
  AC_DEFINE_UNQUOTED(HAVE_CURL, 1, [if we have CURL])
 else
  have_curl=no
 fi

fi
AC_SUBST(CURL_LIBS)
AC_SUBST(CURL_CFLAGS)
AM_CONDITIONAL(HAVE_CURL, test x$have_curl = xyes)

#---------#
# pthread #
#---------#
if test x$def_pthread = xyes ; then
 if test x$have_gthread = xyes ; then
  AC_CHECK_HEADERS([pthread.h], [pthreadHeader="yes"], [pthreadHeader="no"])
  AC_CHECK_LIB([pthread], [main], [FOUND_pthread=yes])
   if test x$FOUND_pthread = xyes ; then
      LIBS="$LIBS -lpthread"
   fi
 fi
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])

######################
## OUTPUT CONFIGURE ##
######################
AC_CONFIG_FILES([Makefile
                 src/Makefile
		 src/lib/Makefile
		 src/lib/graphics/Makefile
		 src/lib/graphics/importer/Makefile
		 src/lib/gui/Makefile
		 src/lib/gui/console/Makefile
                 src/lib/gui/gui/Makefile
		 src/subprojects/Makefile
		 src/subprojects/testmain/Makefile])

AC_OUTPUT