dnl Init.
AC_INIT(dosbox,0.62)
AC_PREREQ(2.50)
AC_CONFIG_SRCDIR(README)

dnl Detect the canonical host and target build environment
AC_CANONICAL_HOST
AC_CANONICAL_TARGET

dnl Setup for automake
AM_INIT_AUTOMAKE
AM_CONFIG_HEADER(config.h)

dnl Checks for programs.
AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_CPP
AC_PROG_CXX
AC_PROG_INSTALL
AC_PROG_RANLIB

dnl Check for SDL
SDL_VERSION=1.2.0
AM_PATH_SDL($SDL_VERSION,
            :,
	    AC_MSG_ERROR([*** SDL version $SDL_VERSION not found!])
)
LIBS="$LIBS $SDL_LIBS"
CPPFLAGS="$CPPFLAGS $SDL_CFLAGS"

dnl Checks for header files.

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_STRUCT_TM
AC_CHECK_SIZEOF(unsigned char)
AC_CHECK_SIZEOF(unsigned short)
AC_CHECK_SIZEOF(unsigned int)
AC_CHECK_SIZEOF(unsigned long)
AC_CHECK_SIZEOF(unsigned long long)
AC_CHECK_SIZEOF(int *)

AC_MSG_CHECKING(if environ can be included)
AC_TRY_LINK([#include <unistd.h>
#include <stdlib.h>],[*environ;],
[AC_MSG_RESULT(yes);AC_DEFINE(ENVIRON_INCLUDED,1,[environ can be included])],AC_MSG_RESULT(no))
AC_MSG_CHECKING(if environ can be linked)
AC_TRY_LINK([extern char ** environ;],[*environ;],
[AC_MSG_RESULT(yes);AC_DEFINE(ENVIRON_LINKED,1,[environ can be linked])],AC_MSG_RESULT(no))

dnl Checks for libraries.

#Check if the compiler support attributes
AH_TEMPLATE([C_HAS_ATTRIBUTE],[Determines if the compilers supports attributes for structures.])
AC_MSG_CHECKING(if compiler allows __attribute__)
AC_TRY_COMPILE([], [typedef struct { } __attribute__ ((packed)) junk;], 
    [ AC_MSG_RESULT(yes);AC_DEFINE(C_HAS_ATTRIBUTE)],AC_MSG_RESULT(no))

AM_PATH_ALSA(0.9.0, AC_DEFINE(HAVE_ALSA,1,[Define to 1 to use ALSA for MIDI]) , : )

#Check for big endian machine, should #define WORD_BIGENDIAN if so
AC_C_BIGENDIAN

#Features to enable/disable
AH_TEMPLATE(C_DEBUG,[Define to 1 to enable internal debugger, requires libcurses])
AH_TEMPLATE(C_HEAVY_DEBUG,[Define to 1 to enable heavy debugging, also have to enable C_DEBUG])
AC_ARG_ENABLE(debug,AC_HELP_STRING([--enable-debug],[Enable debug mode]),[
   AC_CHECK_HEADER(curses.h,have_curses_h=yes,)
   AC_CHECK_LIB(curses, initscr, have_curses_lib=yes, , )
   AC_CHECK_LIB(pdcurses, initscr, have_pdcurses_lib=yes, , )

   if test x$have_curses_lib = xyes -a x$have_curses_h = xyes ; then
     LIBS="$LIBS -lcurses"
     AC_DEFINE(C_DEBUG,1)
     if test x$enable_debug = xheavy ; then 
       AC_DEFINE(C_HEAVY_DEBUG,1)
     fi
   elif test x$have_pdcurses_lib = xyes -a x$have_curses_h = xyes ; then
     LIBS="$LIBS -lpdcurses"
     AC_DEFINE(C_DEBUG,1)
     if test x$enable_debug = xheavy ; then 
       AC_DEFINE(C_HEAVY_DEBUG,1)
     fi
   else 
     AC_MSG_WARN([Can't find curses, debug mode disabled])
   fi
],)

AH_TEMPLATE(C_CORE_INLINE,[Define to 1 to use inlined memory functions in cpu core])
AC_ARG_ENABLE(core-inline,AC_HELP_STRING([--enable-core-inline],[Enable inlined memory handling in CPU Core]),[
  if test x$enable_core_inline = xyes ; then 
    AC_MSG_RESULT([enabling inlined memory handling in CPU Core])
    AC_DEFINE(C_CORE_INLINE,1)
  fi
],)


dnl The target cpu checks for dynamic cores
AH_TEMPLATE(C_HOSTCPU,[The type of cpu this host has])
AC_MSG_CHECKING(for target cpu type) 
case "$target_cpu" in
  i386|i486|i586|i686)
    AC_DEFINE(C_HOSTCPU,X86)
    AC_MSG_RESULT(x86 compatible)
    c_hostcpu="x86"
    ;;
  *)
    AC_DEFINE(C_HOSTCPU,UNKOWN)
    AC_MSG_RESULT(unknown)
    ;;
esac
AH_TEMPLATE(C_DYNAMIC_X86,[Define to 1 to use x86 dynamic cpu core])
AC_ARG_ENABLE(dynamic-x86,AC_HELP_STRING([--disable-dynamic-x86],[Disable x86 dynamic cpu core]),,enable_dynamic_x86=yes)
AC_MSG_CHECKING(whether x86 dynamic cpu core will be enabled) 
if test x$enable_dynamic_x86 = xno ; then 
   AC_MSG_RESULT(no)
else
  if test x$c_hostcpu = xx86 ; then
      AC_DEFINE(C_DYNAMIC_X86,1)
      AC_MSG_RESULT(yes)
  else
      AC_MSG_RESULT(no)
  fi
fi



AH_TEMPLATE(C_FPU,[Define to 1 to enable floating point emulation])
AC_ARG_ENABLE(fpu,AC_HELP_STRING([--disable-fpu],[Disable fpu support]),,enable_fpu=yes)
AC_MSG_CHECKING(whether fpu emulation will be enabled) 
if test x$enable_fpu = xyes ; then 
  AC_MSG_RESULT(yes)
  AC_DEFINE(C_FPU,1)
else 
  AC_MSG_RESULT(no)
fi 

AH_TEMPLATE(C_SSHOT,[Define to 1 to enable screenshots, requires libpng])
AC_CHECK_HEADER(png.h,have_png_h=yes,)
AC_CHECK_LIB(png, png_check_sig, have_png_lib=yes, ,-lz)
if test x$have_png_lib = xyes -a x$have_png_h = xyes ; then
  LIBS="$LIBS -lpng -lz"
  AC_DEFINE(C_SSHOT,1)
else
  AC_MSG_WARN([Can't find libpng, screenshot support disabled])
fi

AH_TEMPLATE(C_MODEM,[Define to 1 to enable internal modem support, requires SDL_net])
AH_TEMPLATE(C_IPX,[Define to 1 to enable IPX over Internet networking, requires SDL_net])
AC_CHECK_HEADER(SDL_net.h,have_sdl_net_h=yes,)
AC_CHECK_LIB(SDL_net, SDLNet_Init, have_sdl_net_lib=yes, , )
if test x$have_sdl_net_lib = xyes -a x$have_sdl_net_h = xyes ; then
  LIBS="$LIBS -lSDL_net"
   AC_DEFINE(C_MODEM,1)
   AC_DEFINE(C_IPX,1)
else 
   AC_MSG_WARN([Can't find SDL_net, internal modem and ipx disabled])
fi

AH_TEMPLATE(C_OPENGL,[Define to 1 to use opengl display output support])
AC_ARG_ENABLE(opengl,AC_HELP_STRING([--disable-opengl],[Disable opengl support]),,enable_opengl=yes)
AC_CHECK_LIB(GL, main, have_gl_lib=yes, have_gl_lib=no , )
AC_CHECK_LIB(opengl32, main, have_opengl32_lib=yes,have_opengl32_lib=no , )
AC_CHECK_HEADER(GL/gl.h, have_gl_h=yes , have_gl_h=no , )
AC_MSG_CHECKING(whether opengl display output will be enabled) 
if test x$enable_opengl = xyes -a x$have_gl_h = xyes -a x$have_gl_lib = xyes ; then 
  AC_MSG_RESULT(yes)
  LIBS="$LIBS -lGL"
  AC_DEFINE(C_OPENGL,1)
elif test x$enable_opengl = xyes -a x$have_gl_h = xyes -a x$have_opengl32_lib = xyes ; then 
  AC_MSG_RESULT(yes)
  LIBS="$LIBS -lopengl32"
  AC_DEFINE(C_OPENGL,1)
else
  AC_MSG_RESULT(no)
fi

AH_TEMPLATE(C_SDL_SOUND,[Define to 1 to enable SDL_sound support])
AC_CHECK_HEADER(SDL/SDL_sound.h,have_SDL_sound_h=yes,)
AC_CHECK_LIB(SDL_sound, Sound_Init, have_SDL_sound_lib=yes,,)
if test x$have_SDL_sound_h = xyes -a x$have_SDL_sound_lib = xyes ; then
  LIBS="$LIBS -lSDL_sound"
  AC_DEFINE(C_SDL_SOUND,1)
else
  AC_MSG_WARN([Can't find libSDL_sound, libSDL_sound support disabled])
fi

AH_TEMPLATE(C_SET_PRIORITY,[Define to 1 if you have setpriority support])
AC_MSG_CHECKING(for setpriority support)
AC_LINK_IFELSE([
#include <sys/resource.h>
int main(int argc,char * argv[]) {
	return setpriority (PRIO_PROCESS, 0,PRIO_MIN+PRIO_MAX);
};
],AC_MSG_RESULT(yes);AC_DEFINE(C_SET_PRIORITY,1),AC_MSG_RESULT(no))


dnl Some host detection and actions for them
case "$target" in
    *-*-cygwin* | *-*-mingw32*)
       LIBS="$LIBS -lwinmm"
       AC_CHECK_HEADERS(ddraw.h)
       AC_DEFINE(C_DIRECTSERIAL, 1, [ Define to 1 if you want serial passthrough support (Win32 only).])
       ;;
    *-*-darwin*)
       dnl We have a problem here: both MacOS X and Darwin report 
       dnl the same signature "powerpc-apple-darwin*" - so we have
       dnl to do more to distinguish them.
       dnl For now I am lazy and do not add proper detection code.
       AC_DEFINE(MACOSX, 1, [Compiling on Mac OS X])
       LIBS="$LIBS -framework AudioUnit"
       ;;
    *-*-linux-gnu*)
       AC_DEFINE(LINUX, 1, [Compiling on GNU/Linux])
       ;;
esac


AC_OUTPUT([ 
Makefile
src/Makefile
src/cpu/Makefile
src/cpu/core_full/Makefile
src/cpu/core_normal/Makefile
src/cpu/core_dyn_x86/Makefile
src/debug/Makefile
src/dos/Makefile
src/fpu/Makefile
src/gui/Makefile
src/hardware/Makefile
src/ints/Makefile
src/misc/Makefile
src/shell/Makefile
src/platform/Makefile
src/platform/visualc/Makefile
visualc/Makefile
visualc_net/Makefile
include/Makefile
docs/Makefile
])