dnl Process this file with autoconf to produce a configure script.

AC_INIT(configure.in)

AM_INIT_AUTOMAKE(lxdream, 0.9.1)

AM_MAINTAINER_MODE

AM_CONFIG_HEADER(config.h)

AC_CANONICAL_BUILD

AC_CANONICAL_HOST

m4_include([m4/ccforbuild.m4])

AC_ISC_POSIX

AC_PROG_CC

AM_PROG_CC_STDC

AC_PROG_CC_FOR_BUILD

AC_PROG_OBJC

AC_PROG_SED

AM_PROG_AS

AC_PROG_RANLIB

AC_CHECK_SIZEOF([void *])

AC_HEADER_STDC

_AM_DEPENDENCIES([OBJC])

AC_PATH_PROG(POD2MAN, [pod2man])

AC_PATH_PROG(POD2HTML, [pod2html])

dnl ---------------- enable/with flags ------------------

AC_ARG_ENABLE( strict-warn,

   AS_HELP_STRING( [--enable-strict-warn], [Enable strict compilation warnings]),

   [if test "$enableval" == "yes"; then

      enable_strictwarn=yes

    fi] )

AC_ARG_ENABLE( translator, 

   AS_HELP_STRING( [--disable-translator], [Disable the SH4 translator (Enabled by default)]),

   [true], [enable_translator=yes] )

AC_ARG_ENABLE( optimized,

   AS_HELP_STRING( [--disable-optimized], [Disable compile-time optimizations (Enabled by default)]),

   [true], [enable_optimized=yes] )

AC_ARG_ENABLE( shared,

   AS_HELP_STRING( [--enable-shared], [Build drivers as shared libraries (Enabled if available)]),

   [if test "$enableval" == "yes"; then enable_shared=yes; else enable_shared=no; fi], [enable_shared=cond] )

AC_ARG_ENABLE( profiled,

   AS_HELP_STRING( [--enable-profiled], [Enable profiling build]),

   [if test "$enableval" == "yes"; then

      enable_profiled=yes;

    fi] )

AC_ARG_ENABLE( trace, 

   AS_HELP_STRING( [--enable-trace], [Enable generation of IO traces (warning: hurts performance)]),

   [if test "$enableval" == "yes"; then

     AC_DEFINE(ENABLE_TRACE_IO, 1, [Enable IO tracing])

    fi] )

AC_ARG_ENABLE( watch,

   AS_HELP_STRING( [--enable-watch], [Enable watchpoints in the debugger (warning: hurts performance)]),

   [if test "$enableval" == "yes"; then

     AC_DEFINE(ENABLE_WATCH, 1, [Enable watchpoints])

   fi] )

AC_ARG_ENABLE( sh4stats,

   AS_HELP_STRING( [--enable-sh4stats], [Enable statistics on executed sh4 instructions]),

   [if test "$enableval" == "yes"; then

     AC_DEFINE(ENABLE_SH4STATS, 1, [Enable SH4 statistics])

    fi] )

AC_ARG_WITH( osmesa,

   AS_HELP_STRING( [--with-osmesa], [Build with the osmesa GL library (software rendering)]),

   [], [with_osmesa=no])

AC_ARG_WITH( gtk,

   AS_HELP_STRING( [--with-gtk], [Build with the GTK UI. Default on X11 systems]), [with_gtk=yes], [with_gtk=x11] )

AC_ARG_WITH( esd,

   AS_HELP_STRING( [--with-esd], [Build with support for the ESounD audio system]) )

AC_ARG_WITH( pulse,

   AS_HELP_STRING( [--with-pulse], [Build with support for the PulseAudio audio system]) )

AC_ARG_WITH( sdl,

   AS_HELP_STRING( [--with-sdl], [Build with support for SDL audio]) )

dnl ------------ Check if we're building on Darwin --------------

dnl For starters, do we have a working objective-c compiler?

AC_HAVE_OBJC([

   AC_CHECK_HEADER([Cocoa/Cocoa.h], [

      HAVE_COCOA='yes'

      APPLE_BUILD='yes'

      LIBS="$LIBS -framework AppKit -framework Carbon"

      LIBS="$LIBS -Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib -framework OpenGL"

      LXDREAMCPPFLAGS="-DMAC_OS_X_VERSION_MIN_REQUIRED=MAC_OS_X_VERSION_10_4 -mdynamic-no-pic"

      LDFLAGS="$LDFLAGS -Wl,-headerpad_max_install_names"

      AC_DEFINE(HAVE_COCOA,[1],[Have Cocoa framework])

      AC_DEFINE(APPLE_BUILD,[1],[Building on an apple platform. Things are different...])

      if test "x$with_gtk" = "xx11"; then

        with_gtk=no

      fi

   ], [], [AC_INCLUDES_DEFAULT])

   AC_OBJC_VERSION([ OBJCOPT="-O2"

                     OBJCFLAGS="$OBJCFLAGS -fno-strict-aliasing" ],

                   [ OBJCOPT="-O2" ], [] )

   AC_CHECK_OBJCFLAG([-msse2])

   AC_CHECK_OBJCFLAG([-mfpmath=sse])

])

AM_CONDITIONAL(GUI_COCOA, [test "$HAVE_COCOA" = 'yes' -a "$with_gtk" = "no"])

if test "x$HAVE_COCOA" = 'xyes' -a "x$with_gtk" = "xno"; then

  AC_DEFINE(OSX_BUNDLE, [1], [Generating a bundled application])

fi

dnl ------------------ C Compiler flags -----------------------

CFLAGS_FOR_BUILD="-O2 -std=c99"

CFLAGS="-g -fexceptions"

OBJCFLAGS="-g -fexceptions"

AC_DEFINE(HAVE_EXCEPTIONS, [1], [Have exception stack-frame information])

STDCFLAG="-std=c99"

AC_CC_VERSION([ CCOPT="-O2" 

                CFLAGS="$CFLAGS -fno-strict-aliasing" ],

              [ CCOPT="$CFLAGS -fast"

                CFLAGS="$CFLAGS -fno-strict-aliasing" ],

              [ CCOPT="$CFLAGS -O2" ])

AC_CHECK_CFLAG([-msse2])

AC_CHECK_CFLAG([-mfpmath=sse])

if test "x$enable_optimized" = "xyes"; then

   CFLAGS="$CFLAGS $CCOPT"

   OBJCFLAGS="$OBJCFLAGS $OBJCOPT"

   if test "x$enable_profiled" != "xyes"; then

       dnl -fomit-frame-pointer can't be used with -pg

       CFLAGS="$CFLAGS -fomit-frame-pointer"

       OBJCFLAGS="$OBJCFLAGS -fomit-frame-pointer"

   fi

else

   CFLAGS="$CFLAGS -g3"

   OBJCFLAGS="$OBJCFLAGS -g3"

fi

if test "x$enable_profiled" = "xyes"; then

   CFLAGS="$CFLAGS -pg"

   LDFLAGS="$LDFLAGS -pg";

   OBJCFLAGS="$OBJCFLAGS -pg";

fi

if test "x$enable_strictwarn" = "xyes"; then

   CFLAGS="$CFLAGS -Wall -Werror -Wno-unused"

   OBJCFLAGS="$OBJCFLAGS -Wall -Werror -Wno-unused"

fi

if test "x$enable_shared" != "xno"; then

   if test "x$APPLE_BUILD" = "xyes"; then

      SOEXT="dylib"

      PLUGINLDFLAGS="-dynamiclib -undefined dynamic_lookup"

   else 

      SOEXT="so"

      PLUGINLDFLAGS="-shared"

   fi

   PLUGINCFLAGS="-fPIC"

dnl Check for dlfcn.h and dlopen() (in libdl or libc)

   AC_CHECK_HEADER( [dlfcn.h], [

      AC_SEARCH_LIBS( [dlopen], [dl], [have_dlopen=yes]) ])

   if test "x$have_dlopen" != "xyes"; then

      if test "x$enable_shared" == "xyes"; then

         AC_MSG_ERROR( "--enable-shared not supported on your system - can't find a working dlopen" )

      else

         AC_MSG_WARN("Statically linking all plugins")

      fi

   fi

dnl Check if linker accepts -rdynamic

   AC_MSG_CHECKING([if linker accepts -rdynamic])

   old_LDFLAGS="$LDFLAGS"

   LDFLAGS="$LDFLAGS -rdynamic"

   AC_LINK_IFELSE( [AC_LANG_SOURCE([int main() { return 0; }])], [

     LXDREAMLDFLAGS="-rdynamic"

     AC_MSG_RESULT([yes]) 

   ], [

     LXDREAMLDFLAGS=""

     AC_MSG_RESULT([no]) ])

   LDFLAGS="$old_LDFLAGS"

   AC_SUBST(SOEXT)

   AC_SUBST(PLUGINCFLAGS)

   AC_SUBST(PLUGINLDFLAGS)

   AC_SUBST(LXDREAMLDFLAGS)

fi

if test "x$have_dlopen" = "xyes"; then

    AC_DEFINE(BUILD_PLUGINS, [1], [Enable dynamic plugin support])

fi

AM_CONDITIONAL(BUILD_PLUGINS, [test "x$have_dlopen" = "xyes"])

AC_CHECK_FASTCALL([

   AC_DEFINE(HAVE_FASTCALL, [1], [Use fast register-passing calling conventions])

])

AC_CHECK_FORCEINLINE()

AC_DEFINE_UNQUOTED(FORCEINLINE, [$FORCEINLINE], [Forcibly inline code])

AC_CHECK_FRAME_ADDRESS( [

   AC_DEFINE(HAVE_FRAME_ADDRESS, [1], [Define if we have a working builtin frame_address])

], [ AC_MSG_WARN([Memory exceptions will be slow]) ])

AC_SUBST(LXDREAMCPPFLAGS)

AC_SEARCH_LIBS(listen, [socket])

AC_SEARCH_LIBS(inet_ntoa,[nsl])

dnl ----------- Check for mandatory dependencies --------------

dnl Check for libpng (required)

PKG_CHECK_MODULES(LIBPNG, [libpng] )

dnl Implied by libpng, but check explicitly just in case

AC_CHECK_LIB(z, uncompress, [], [

    echo "Zlib (libz.so) could not be found, but is required."

    exit 1])

if test "x$with_gtk" = "xno"; then

   dnl Check for GLIB only

   PKG_CHECK_MODULES(GLIB, glib-2.0)

else

   dnl Check for GTK

   PKG_CHECK_MODULES(GTK, gtk+-2.0, [

       HAVE_GTK='yes'

       AC_DEFINE([HAVE_GTK],1,[Have GTK libraries])

   ])

   dnl Which GTK port do we have?

   LIBS="$LIBS $GTK_LIBS"

   AC_CHECK_FUNC(gdk_x11_display_get_xdisplay, [ 

      HAVE_GTK_X11='yes'

      AC_DEFINE([HAVE_GTK_X11],1,[Building with GTK+X11]) ], [])

      dnl Add -lX11 explicitly as some pkg-configs get it wrong

      GTK_LIBS="$GTK_LIBS -lX11"

      LIBS="$LIBS -lX11"

   AC_CHECK_FUNC(gdk_quartz_window_get_nsview, [ 

      HAVE_GTK_OSX='yes'

      AC_DEFINE([HAVE_GTK_OSX],1,[Building with GTK+Cocoa]) ], [])

   if test "x$HAVE_GTK_X11$HAVE_GTK_OSX" = "x"; then

      AC_MSG_FAILURE( [Unable to identify GTK platform] )

   fi

fi

AC_PUSH_CC_FOR_BUILD

PKG_CHECK_MODULES(GLIB_FOR_BUILD, glib-2.0)

AC_POP_CC_FOR_BUILD

AM_CONDITIONAL(GUI_GTK, [test "$HAVE_GTK" = 'yes'])

PKG_CHECK_MODULES(LIBISOFS, [libisofs-1] )

dnl AC_CHECK_HEADER([libisofs/libisofs.h], [

   dnl AC_CHECK_LIB(isofs, [iso_data_source_new_from_file], [

      dnl LIBS="$LIBS -lisofs"

   dnl ], [ AC_MSG_FAILURE( ["Libisofs library not found, but is required"]) ])], 

      dnl [ AC_MSG_FAILURE( ["Libisofs headers not found, but is required"]) ])

dnl ------------------ Video driver support -------------------

AS_IF([test "x$with_osmesa" != xno], [ 

dnl User requested OSMesa (ie pure software rendering)

  AC_CHECK_LIB([OSMesa], [OSMesaCreateContext], [],

    [AC_MSG_FAILURE( [--with-osmesa was given, but OSMesa library could not be found])])

  AC_CHECK_HEADER([GL/osmesa.h], [],

    [AC_MSG_FAILURE( [--with-osmesa was given, but osmesa.h could not be found])])

  HAVE_OSMESA='yes'

  VIDEO_DRIVERS="$VIDEO_DRIVERS osmesa"

  AC_DEFINE([HAVE_OSMESA],1,[Building with the OSMesa video driver]) ], [

dnl Otherwise we want a real GL library (unless we're on darwin, in which case it's already

dnl taken care of above).

   if test "x$APPLE_BUILD" != 'xyes'; then

      PKG_CHECK_MODULES(LIBGL, [gl] )

      dnl AC_CHECK_LIB(GL, glVertex3f, [], [

          dnl AC_MSG_FAILURE( ["The OpenGL library (libGL.so) could not be found, but is required."])])

      dnl AC_CHECK_HEADER([GL/gl.h], [], [

          dnl AC_MSG_FAILURE( ["The OpenGL header files (eg GL/gl.h) could not be found, but are required."])])

      LIBS="$LIBS $LIBGL_LIBS";

      CPPFLAGS="$CPPFLAGS $LIBGL_CFLAGS";

   else

      AC_CHECK_FUNC(NSOpenGLGetVersion, [

         HAVE_NSGL='yes'

         VIDEO_DRIVERS="$VIDEO_DRIVERS nsgl"

         AC_DEFINE([HAVE_NSGL],1, [Have NSOpenGL support]) ] )

   fi

dnl Now work out how to get from the UI to GL - this is usually the painful part.

   if test "x$HAVE_GTK_X11" = "xyes"; then

      if test "x$APPLE_BUILD" = "xyes"; then

         LIBS="$LIBS -L/usr/X11/lib -lGL"

      fi

      AC_CHECK_FUNC(glXQueryVersion, [

         HAVE_GLX='yes'

         VIDEO_DRIVERS="$VIDEO_DRIVERS glx"

         AC_DEFINE([HAVE_GLX], 1, [Have GLX support]) ] )

   fi

])

AM_CONDITIONAL(VIDEO_OSMESA, [test "x$HAVE_OSMESA" = "xyes"])

AM_CONDITIONAL(VIDEO_GLX, [test "x$HAVE_GLX" = "xyes"])

AM_CONDITIONAL(VIDEO_NSGL, [test "x$HAVE_NSGL" = "xyes"])

dnl Check for optional (but highly desireable) OpenGL features

AC_CHECK_FUNC(glGenFramebuffers, [ AC_DEFINE([HAVE_OPENGL_FBO],1,[Have 2.0 framebuffer_object support]) ], [])

AC_CHECK_FUNC(glGenFramebuffersEXT, [ AC_DEFINE([HAVE_OPENGL_FBO_EXT],1,[Have EXT_framebuffer_object support]) ], [])

AC_CHECK_FUNC(glCreateShader, [ AC_DEFINE([HAVE_OPENGL_SHADER],1,[Have 2.0 shader support]) ], [])

AC_CHECK_FUNC(glCreateShaderObjectARB, [ AC_DEFINE([HAVE_OPENGL_SHADER_ARB],1,[Have ARB shader support]) ], [])

AC_CHECK_FUNC(glClampColorARB, [ AC_DEFINE([HAVE_OPENGL_CLAMP_COLOR],1,[Have Color Clamp]) ], [])

AC_CHECK_FUNC(glClearDepthf, [ AC_DEFINE([HAVE_OPENGL_CLEAR_DEPTHF],1,[Have glClearDepthf function]) ], [])

AC_CHECK_FUNC(glAreTexturesResident, [ AC_DEFINE([HAVE_OPENGL_TEX_RESIDENT],1,[Have glAreTexturesResident]) ], [])

AC_CHECK_FUNC(glTexEnvi, [ AC_DEFINE([HAVE_OPENGL_FIXEDFUNC],1,[Have OpenGL fixed-functionality]) ], [])dnl glTexEnvi is a pretty fair proxy for this.

dnl ------------------- SH4 translator target -------------------

if test "x$enable_translator" != "xno"; then

    case $host_cpu in

        i386|i486|i586|i686|x86_64)

	    SH4_TRANSLATOR="x86"

            AC_DEFINE_UNQUOTED(SH4_TRANSLATOR,[TARGET_X86], [SH4 Translator to use (if any)] );;

    esac

fi

AM_CONDITIONAL(BUILD_SH4X86, [test "$SH4_TRANSLATOR" = "x86"])

dnl ------------------ Optional driver support -------------------

dnl Check for Apple CoreAudio

AC_CHECK_HEADER([CoreAudio/CoreAudio.h], [

     HAVE_CORE_AUDIO=yes

     LIBS="$LIBS -framework CoreAudio"

     AUDIO_DRIVERS="$AUDIO_DRIVERS osx"

     AC_DEFINE([HAVE_CORE_AUDIO], 1, [Have Apple CoreAudio support]) ],[true ])

AM_CONDITIONAL( AUDIO_OSX, [test "$HAVE_CORE_AUDIO" = 'yes'] )

dnl Check for SDL (only used for audio at the moment)

if test "x$with_sdl" != "xno"; then

   PKG_CHECK_MODULES(SDL, [sdl], [

       HAVE_SDL='yes'

       AUDIO_DRIVERS="$AUDIO_DRIVERS sdl"

       AC_DEFINE([HAVE_SDL],1,[Have SDL support])

   ], [

      if test "x$with_sdl" = "xyes"; then

         AC_MSG_FAILURE( ["SDL libraries could not be found (but were required)] )

      fi

   ])

fi

AM_CONDITIONAL( AUDIO_SDL, [test "$HAVE_SDL" = 'yes'] )

dnl Check for pulseaudio

if test "x$with_pulse" != "xno"; then

   PKG_CHECK_MODULES(PULSE, [libpulse-simple], [

       HAVE_PULSE='yes'

       AUDIO_DRIVERS="$AUDIO_DRIVERS pulse"

       AC_DEFINE([HAVE_PULSE],1,[Have pulseaudio support]) 

   ], [

       if test "x$with_pulse" = "xyes"; then

          AC_MSG_FAILURE( [PulseAudio audio package could not be found (but was required)] )

       fi

   ])

fi

AM_CONDITIONAL( AUDIO_PULSE, [test "$HAVE_PULSE" = 'yes'] )

dnl Check for esound

if test "x$with_esd" != "xno"; then

   PKG_CHECK_MODULES(ESOUND, [esound], [ 

       HAVE_ESOUND='yes'

       AUDIO_DRIVERS="$AUDIO_DRIVERS esd"

       AC_DEFINE([HAVE_ESOUND],1,[Have esound support]) 

   ], [

       if test "x$with_esd" = "xyes"; then

          AC_MSG_FAILURE( [ESounD audio package could not be found (but was required)] )

       fi

   ])

fi

AM_CONDITIONAL( AUDIO_ESOUND, [test "$HAVE_ESOUND" = 'yes'] )

dnl Check for alsa support

PKG_CHECK_MODULES(ALSA, [alsa], [ 

     HAVE_ALSA='yes'

     AUDIO_DRIVERS="$AUDIO_DRIVERS alsa"

     AC_DEFINE([HAVE_ALSA],1,[Have alsa support]) ], [true])

AM_CONDITIONAL( AUDIO_ALSA, [test "$HAVE_ALSA" = 'yes'] )

dnl Check for native cdrom support. There can be only one.

AC_CHECK_HEADER([linux/cdrom.h], [

     CDROM_DRIVER=linux

     dnl Some kernel versions have non-c99 compliant headers - check here

     AC_MSG_CHECKING([C99 compliant kernel headers])

     old_CFLAGS="$CFLAGS"

     CFLAGS="$CFLAGS $STDCFLAG"

     AC_TRY_COMPILE([#include <linux/cdrom.h>], [], [AC_MSG_RESULT([Yes])], [

        AC_MSG_RESULT([No])

        STDCFLAG="-std=gnu99"])

     CFLAGS="$old_CFLAGS"

], [true])

AC_CHECK_HEADER([IOKit/IOKitLib.h], [

     CDROM_DRIVER=osx

     LIBS="$LIBS -framework IOKit"],[true])

AM_CONDITIONAL(CDROM_LINUX, [test "x$CDROM_DRIVER" = "xlinux"])

AM_CONDITIONAL(CDROM_OSX, [test "x$CDROM_DRIVER" = "xosx"])

AM_CONDITIONAL(CDROM_NONE, [test "x$CDROM_DRIVER" = "x"])

if test "x$CDROM_DRIVER" = "xlinux"; then

   AC_DEFINE([HAVE_LINUX_CDROM],1,[Using the linux native CDROM driver])

fi

AC_CHECK_HEADER([linux/joystick.h], [

    HAVE_LINUX_JOYSTICK_H=yes

    AC_DEFINE([HAVE_LINUX_JOYSTICK], 1, [Have linux joystick support]) 

    INPUT_DRIVERS="$INPUT_DRIVERS joy_linux" ], 

  [ echo "Linux Joystick support not found, building without it."] )

AM_CONDITIONAL(JOY_LINUX, [test "$HAVE_LINUX_JOYSTICK_H" = "yes"])

dnl Check for LIRC

if test "x$with_lirc" != "xno"; then

    AC_CHECK_HEADER([lirc/lirc_client.h], [

        HAVE_LIRC_CLIENT_H=yes

        AC_DEFINE([HAVE_LIRC],1,[Have LIRC support]) 

        INPUT_DRIVERS="$INPUT_DRIVERS lirc"

      ],

      [ echo "LIRC support not found, building without it." ] )

fi

AM_CONDITIONAL(INPUT_LIRC, [test "$HAVE_LIRC_CLIENT_H" = "yes"])

dnl Check for cross-compiler availability - needed for system tests

AC_PATH_PROG(SHCC, [sh-elf-gcc])

AC_PATH_PROG(SHLD, [sh-elf-ld])

AC_PATH_PROG(SHOBJCOPY, [sh-elf-objcopy])

AC_PATH_PROG(ARMCC, [arm-elf-gcc])

AC_PATH_PROG(ARMLD, [arm-elf-ld])

AC_PATH_PROG(ARMOBJCOPY, [arm-elf-objcopy])

if test "x$SHCC" = "x" -o "x$SHLD" = "x" -o "x$SHOBJCOPY" = "x"; then

  BUILD_SH="no"

  echo "Warning: SH4 cross-compiler not found, system tests will be disabled."

else

  BUILD_SH="yes"

fi

if test "x$ARMCC" = "x" -o "x$ARMLD" = "x" -o "x$ARMOBJCOPY" = "x"; then

  BUILD_ARM="no"

  echo "Warning: ARM cross-compiler not found, AICA tests will be disabled."

else

  BUILD_ARM="yes"

fi

AM_CONDITIONAL(BUILD_SYSTEST, [test "$BUILD_SH" = "yes"])

AM_CONDITIONAL(BUILD_ARMTEST, [test "$BUILD_ARM" = "yes"])

CFLAGS="$CFLAGS $STDCFLAG"

dnl ----------------------- All done, finish up -----------------------

GETTEXT_PACKAGE=lxdream

LXDREAM_LIBS="$LIBS"

LIBS=""

AC_SUBST(LXDREAM_LIBS)

AC_SUBST(GETTEXT_PACKAGE)

AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE,"$GETTEXT_PACKAGE",[translation domain])

dnl Add the languages which your application supports here.

ALL_LINGUAS="de es it nl pt_BR"

AM_GLIB_GNU_GETTEXT

AC_OUTPUT([

Makefile

src/Makefile

src/tools/Makefile

po/Makefile.in

test/Makefile

Info.plist

])

AS_MKDIR_P(test/sh4)

dnl ------------------------- Print out a summary ----------------------

echo

echo "Configuration complete"

echo

if test "x$HAVE_GTK" = x; then

  if test "x$HAVE_COCOA" = x; then

     echo "  User interface: none"

  else

     echo "  User interface: Cocoa"

  fi

else

  echo "  User interface: GTK"

fi

if test "x$SH4_TRANSLATOR" = "x"; then

  echo "  SH4 translator: None (emulation core only)"

else

  echo "  SH4 translator: $SH4_TRANSLATOR"

fi

if test "x$VIDEO_DRIVERS" = "x"; then

   echo "  Video drivers: none (no supported GL found)"

else

   echo "  Video drivers: $VIDEO_DRIVERS"

fi

if test "x$AUDIO_DRIVERS" = "x"; then

   echo "  Audio drivers: none (no supported output devices found)"

else

   echo "  Audio drivers: $AUDIO_DRIVERS"

fi

if test "x$INPUT_DRIVERS" = "x"; then

   echo "  Input drivers: none (no supported input devices found)"

else

   echo "  Input drivers: $INPUT_DRIVERS"

fi

if test "x$CDROM_DRIVER" = "x"; then

   echo "  CD-ROM driver: none (no supported cd-rom devices found)"

else

   echo "  CD-ROM driver:  $CDROM_DRIVER"

fi