dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.13)
AC_INIT(common/crc.h)

dnl Version of this release
QF_VERSION=0.2-d
VERSION=2.40
QSG_STANDARD=1

AC_DEFINE_UNQUOTED(QF_VERSION,"$QF_VERSION")
AC_DEFINE_UNQUOTED(VERSION,"$VERSION")
AC_DEFINE_UNQUOTED(QSG_STANDARD,"$QSG_STANDARD")

dnl Set to yes for releases
RELEASE=no

AC_CANONICAL_SYSTEM
AC_LANG_C

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CPP
AC_PROG_MAKE_SET
AC_PROG_RANLIB

dnl Checks for header files.
AC_CHECK_HEADERS(unistd.h fcntl.h dlfcn.h windows.h sys/ioctl.h sys/mman.h \
	sys/io.h asm/io.h \
	sys/stat.h sys/time.h sys/timeb.h \
	sys/socket.h netinet/in.h netdb.h arpa/inet.h sys/filio.h \
	sys/soundcard.h linux/soundcard.h machine/soundcard.h sys/audioio.h \
	dsound.h mmsystem.h initguid.h mme/mmsystem.h mme/mme_public.h \
	sys/asoundlib.h string.h strings.h memory.h malloc.h \
        errno.h sys/dir.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_PROG_GCC_TRADITIONAL
AC_C_CONST
AC_C_INLINE
AC_HEADER_TIME
AC_STRUCT_TM
AC_C_BIGENDIAN
AC_MSG_CHECKING(for socklen_t in sys/types.h)
AC_TRY_COMPILE([#include <sys/types.h>],
        [ socklen_t x = 0;],
        AC_DEFINE(HAVE_SOCKLEN_T) AC_MSG_RESULT(yes),
	AC_MSG_RESULT(no)
	dnl FreeBSD 4.0 has it in sys/socket.h
	AC_MSG_CHECKING(for socklen_t in sys/socket.h)
	AC_TRY_COMPILE([#include <sys/types.h>
		#include <sys/socket.h>],
        	[ socklen_t x = 0;],
        	AC_DEFINE(HAVE_SOCKLEN_T) AC_MSG_RESULT(yes),
        	AC_MSG_RESULT(no))
        )
AC_MSG_CHECKING(for size_t in sys/types.h)
AC_TRY_COMPILE([#include <sys/types.h>],
        [ size_t x = 0;],
        AC_DEFINE(HAVE_SIZE_T) AC_MSG_RESULT(yes),
        AC_MSG_RESULT(no))

AC_MSG_CHECKING(for ss_len in struct sockaddr_storage)
dnl maybe these two (at least the 2nd) should only be checked if ipv6
dnl is enabled?
AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/socket.h>],
        [ void f(void) { struct sockaddr_storage ss; ss.ss_len=0; }],
        AC_DEFINE(HAVE_SS_LEN) AC_MSG_RESULT(yes),
        AC_MSG_RESULT(no))
AC_MSG_CHECKING(for sin6_len in struct sockaddr_in6)
AC_TRY_COMPILE([#include <sys/types.h>
#include <netinet/in.h>],
        [ void f(void) { struct sockaddr_in6 s6; s6.sin6_len=0; }],
        AC_DEFINE(HAVE_SIN6_LEN) AC_MSG_RESULT(yes),
        AC_MSG_RESULT(no))
AC_MSG_CHECKING(for sa_len in struct sockaddr)
AC_TRY_COMPILE([#include <sys/types.h>
#include <netinet/in.h>],
        [ void f(void) { struct sockaddr sa; sa.sa_len=0; }],
        AC_DEFINE(HAVE_SA_LEN) AC_MSG_RESULT(yes),
        AC_MSG_RESULT(no))

dnl Check for symbol underscore prefix 
dnl !!! FIXME !!! Do some real check here...

AC_MSG_CHECKING(whether C symbols are prefixed by '_')
case "${target}" in
  *-*-msdos* | *-*-djgpp* | *-*-mingw* | *-*-cygwin* | *-*-openbsd*)
	AC_DEFINE(HAVE_SYM_PREFIX_UNDERSCORE)
        AC_MSG_RESULT(yes)
	;;
  *)
        AC_MSG_RESULT(no)
	;;
esac

dnl Checks for library functions.
AC_FUNC_MMAP
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(gethostname gethostbyname connect gettimeofday getwd mkdir \
	ftime _ftime fcntl stat putenv select socket strerror strstr \
	snprintf _snprintf vsnprintf _vsnprintf strsep dlopen getaddrinfo getnameinfo)

AC_ARG_ENABLE(experimental,
[  --enable-experimental   compile with experimental code. Use at your
                          own risk])
if test "x$enable_experimental" = xyes; then
   AC_DEFINE(_EXPERIMENTAL_)
fi

AC_DEFINE(GAMENAME, "id1")

AC_ARG_WITH(global-cfg,
[  --with-global-cfg=FILE  If set will change the name and location of the
                          global config file used by QuakeForge.  Defaults to
			  \${sysconfdir}/quakeforge.con],
   globalconf="$withval", globalconf="auto")
if test "x$globalconf" = "xauto" || test "x$globalconf" = "xyes" || \
	test "x$globalconf" = "xno"; then  dnl yes/no sanity checks
   globalconf="$sysconfdir/quakeforge.conf"
fi
AC_SUBST(globalconf)

AC_ARG_ENABLE(basepath,
[  --enable-basepath       use \${prefix}/games/quakeforge instead of . for game
                          data],
   BASEPATH=$enable_basepath
)
AC_ARG_WITH(basepath,
[  --with-basepath=DIR     use basepath instead of . or
                          \${prefix}/games/quakeforge for game data],
BASEPATH=$withval)
if test "x$BASEPATH" = xyes; then
   if test "x$prefix" = xNONE; then
      AC_DEFINE_UNQUOTED(FS_BASEPATH, "${ac_default_prefix}/games/quakeforge")
   else
      AC_DEFINE_UNQUOTED(FS_BASEPATH, "${prefix}/games/quakeforge")
   fi
elif test "x$BASEPATH" = xno -o "x$BASEPATH" = x; then
   AC_DEFINE(FS_BASEPATH, ".")
else
   AC_DEFINE_UNQUOTED(FS_BASEPATH, "$BASEPATH")
fi

GENERATIONS=no
AC_ARG_ENABLE(generations,
[  --enable-generations    enable .qz support. Requires zlib)],
   GENERATIONS=$enable_generations
)

AC_ARG_ENABLE(release,
[  --enable-release        compile release (with optimization)],
       RELEASE=$enable_release
)

AC_ARG_WITH(ipv6,
[  --with-ipv6             enable IPv6 support. Optional argument specifies
                          location of inet6 libraries.],
	AC_DEFINE(HAVE_IPV6)
	if test "x$withval" = xno ; then
		NET_SOURCE=net_udp.c
	else
		NET_SOURCE=net_udp6.c
		if test "x$withval" != xyes ; then
			LIBS="$LIBS -L${withval}"
		fi
	fi
,
dnl Default is no IPv6
	NET_SOURCE=net_udp.c
)

AC_ARG_ENABLE(alsa,
[  --disable-alsa          disable alsa support],
)      

AC_ARG_ENABLE(zlib,
[  --disable-zlib          disable zlib support],
)

dnl Checks for stricmp/strcasecmp
AC_CHECK_FUNC(stricmp,,
  AC_CHECK_FUNC(strcasecmp, AC_DEFINE(stricmp,strcasecmp)))

dnl Check for vsnprintf
if test "x$ac_cv_func_vsnprintf" = "xno" -a \
	"x$ac_cv_func__vsnprintf" = "xno"; then
  dnl libdb may have this
  AC_CHECK_LIB(db,vsnprintf)
fi

dnl Check for dlopen
if test "x$ac_cv_func_dlopen" = "xno"; then
  AC_CHECK_LIB(dl, dlopen, LIBS="$LIBS -ldl"
    have_dynload=yes
    AC_DEFINE(HAVE_DLOPEN))
else
  have_dynload=yes
fi

dnl Checks for getaddrinfo in separate IPv6 lib, if not available by default
if test "x$ac_cv_func_getaddrinfo" = xno ; then
 AC_CHECK_LIB(inet6,getaddrinfo,LIBS="${LIBS} -linet6")
fi

dnl Checks for working -lm
AC_CHECK_LIB(m, pow,, AC_MSG_ERROR([math library (-lm) appears broken]))

if test "x$enable_zlib" != "xno"; then
dnl Check for working -lz
dnl Note - must have gztell *and* gzgets in -lz *and* zlib.h
AC_CHECK_LIB(z, gztell, HAS_ZLIB=yes, HAS_ZLIB=no, [$LIBS])
if test "x$HAS_ZLIB" = "xyes"; then
   AC_CHECK_LIB(z, gzgets, HAS_ZLIB=yes, HAS_ZLIB=no, [$LIBS])
   if test "x$HAS_ZLIB" = "xyes"; then
      AC_CHECK_HEADER(zlib.h, HAS_ZLIB=yes, HAS_ZLIB=no)
      if test "x$HAS_ZLIB" = "xyes"; then
         LIBS="-lz $LIBS"
         AC_DEFINE(HAS_ZLIB)
         if test "x$GENERATIONS" = "xyes"; then
            AC_DEFINE(GENERATIONS)
         fi
      fi
   fi
fi
fi

dnl Checks for X11 support
dnl (XoXus: Since vid_x11.c relies on XShm being there, this now disables
dnl  the X11 video driver if -lXext can not be found)
AC_PATH_XTRA
if test "x$no_x" = x; then
   HAS_X11=yes
   AC_CHECK_LIB(Xext, XShmQueryExtension, [X11_SHM_LIB=-lXext],
     [HAS_X11="no"], [ $X_LIBS -lX11 $X_EXTRA_LIBS ])
fi

dnl Check for VIDMODE support
AC_ARG_ENABLE(VIDMODE,
[  --enable-DGA            use XFree86 DGA extension, if available],
HAS_DGA=$enable_VIDMODE, HAS_VIDMODE=auto)
if test "x$HAS_VIDMODE" != xno; then
   save_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$X_CFLAGS $CPPFLAGS"
   AC_CHECK_HEADER(X11/extensions/xf86vmode.h, HAS_VIDMODE=yes, HAS_VIDMODE=no)
   CPPFLAGS="$save_CPPFLAGS"
fi

dnl Check for DGA support
AC_ARG_ENABLE(DGA,
[  --enable-DGA            use XFree86 DGA extension, if available],
HAS_DGA=$enable_DGA, HAS_DGA=auto)
if test "x$HAS_VIDMODE" = xyes; then
   if test "x$HAS_DGA" != xno; then
      save_CPPFLAGS="$CPPFLAGS"
      CPPFLAGS="$X_CFLAGS $CPPFLAGS"
      AC_CHECK_HEADER(X11/extensions/xf86dga.h, HAS_DGA=yes, HAS_DGA=no)
      AC_CHECK_HEADER(X11/extensions/xf86vmode.h, qwfoo=qwfoo, HAS_DGA=no)
      CPPFLAGS="$save_CPPFLAGS"
   else
      HAS_DGA=no
   fi
fi

dnl Checks for VGA support
case "${target}" in
  i?86-*-*djgpp* | i?86-*-*msdos*)
	HAS_VGA=yes
	;;
  *)
	HAS_VGA=no
	;;
esac

dnl Checks for MGL support
AC_ARG_WITH(mgl,
[  --with-mgl=DIR          use MGL found in DIR],
HAS_MGL=$withval, HAS_MGL=auto)
if test "x$HAS_MGL" != xno; then
 if test "x$ac_cv_header_windows_h" != "xyes"; then
   HAS_MGL=no
 else
   if test "x$HAS_MGL" != xauto; then
      MGL_CFLAGS="$MGL_CFLAGS -I$withval/include"
      MGL_LIBS="$MGL_LIBS -L$withval/lib"
   fi
   save_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$CPPFLAGS $MGL_CFLAGS"
   AC_CHECK_HEADER(mgraph.h, HAS_MGL=yes, HAS_MGL=no)
   CPPFLAGS="$save_CPPFLAGS"
 fi
fi

dnl Checks for GGI support
AC_ARG_WITH(ggi,
[  --with-ggi=DIR          use LibGGI found in DIR],
HAS_GGI=$withval, HAS_GGI=auto)
if test "x$HAS_GGI" != xno; then
   if test "x$HAS_GGI" != xauto; then
      GGI_CFLAGS="$GGI_CFLAGS -I$withval/include"
      GGI_LIBS="$GGI_LIBS -L$withval/lib"
   fi
   save_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$CPPFLAGS $GGI_CFLAGS"
   AC_CHECK_HEADER(ggi/ggi.h, HAS_GGI=yes, HAS_GGI=no)
   CPPFLAGS="$save_CPPFLAGS"
fi

dnl Checks for SVGALib support
AC_ARG_WITH(svga,
[  --with-svga=DIR         use SVGALib found in DIR],
HAS_SVGA=$withval, HAS_SVGA=auto)
if test "x$HAS_SVGA" != xno; then
   if test "x$HAS_SVGA" != xauto; then
      SVGA_CFLAGS="$SVGA_CFLAGS= -I$withval/include"
      SVGA_LIBS="$SVGA_LIBS -L$withval/lib"
   dnl The default system location is /usr/include or /usr/local/include
   dnl and we (obviously) do not need to set CFLAGS for that
   fi
   save_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$CPPFLAGS $SVGA_CFLAGS"
   AC_CHECK_HEADER(vga.h, HAS_SVGA=yes, HAS_SVGA=no)
   CPPFLAGS="$save_CPPFLAGS"
fi

dnl Checks for SDL support
AC_ARG_WITH(sdl,
[  --with-sdl=DIR          use SDL found in DIR],
HAS_SDL=$withval, HAS_SDL=auto)
if test "x$HAS_SDL" != xno; then
   if test "x$HAS_SDL" != xauto; then
      SDL_CFLAGS="$SDL_CFLAGS -I$withval/include"
      SDL_LIB="$SDL_LIBS -L$withbal/lib"
   fi
   save_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$CPPFLAGS $SDL_CFLAGS"
   AC_CHECK_HEADER(SDL/SDL.h, HAS_SDL=yes, HAS_SDL=no)
   CPPFLAGS="$save_CPPFLAGS"
fi


dnl Checks for GLIDE support
AC_ARG_WITH(glide,
[  --with-glide=DIR        use the GLIDE 2.x SDK found in DIR],
HAS_GLIDE=$withval, HAS_GLIDE=auto)
if test "x$HAS_GLIDE" != xno; then
   if test "x$HAS_GLIDE" != xauto; then
      GLIDE_CFLAGS="$GLIDE_CFLAGS -I$withval/include"
      GLIDE_LIBS="$GLIDE_LIBS -L$withval/lib"
   else
      GLIDE_CFLAGS="$GLIDE_CFLAGS -I/usr/include/glide -I/usr/local/include/glide"
   fi
   save_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$CPPFLAGS $GLIDE_CFLAGS"
   AC_CHECK_HEADER(glide.h, HAS_GLIDE=yes, HAS_GLIDE=no)
   if test "x$HAS_GLIDE" != xyes; then
	HAS_GLIDE=no
   fi
   CPPFLAGS="$save_CPPFLAGS"
fi

dnl Checks for OGL support
dnl GL is a special case, we need seperate includes/libs entires
AC_ARG_WITH(opengl,
[  --with-opengl=DIR       use OpenGL with libraries found in DIR],
HAS_OGL=$withval, HAS_OGL=auto)
AC_ARG_WITH(opengl-includes,
[  --with-opengl-includes=DIR
                          use OpenGL with header files found in DIR],
OGL_INCLUDES=$withval, OGL_INCLUDES=auto)
if test "x$OGL_INCLUDES" = xno; then
   HAS_OGL="no"
fi
if test "x$HAS_OGL" = xno; then
   OGL_INCLUDES=""
fi
if test "x$HAS_OGL" != xno; then
   if test "x$HAS_OGL" != xauto; then
      OGL_LIBS="$OGL_LIBS -L$HAS_OGL"
   fi
   if test "x$OGL_INCLUDES" != xauto; then
      OGL_INCLUDES="-I$OGL_INCLUDES"
   else
      OGL_INCLUDES="-I${x_includes:-.}"
   fi
   save_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$CPPFLAGS $OGL_INCLUDES"
   AC_CHECK_HEADER(GL/gl.h, HAS_OGL=yes, HAS_OGL=no)
   if test "x$HAS_OGL" != xno; then
      AC_CHECK_HEADER(GL/xmesa.h, HAS_XMESA=yes, HAS_XMESA=no)
      AC_MSG_CHECKING(for GL_COLOR_INDEX8_EXT in GL/gl.h)
      AC_TRY_COMPILE([#include "GL/gl.h"],
        [ int x = (int) GL_COLOR_INDEX8_EXT;],
        AC_DEFINE(HAVE_GL_COLOR_INDEX8_EXT) AC_MSG_RESULT(yes),
        AC_MSG_RESULT(no))

      AC_MSG_CHECKING(for GLAPIENTRY in GL/gl.h)
      AC_TRY_COMPILE([#include "GL/gl.h"],
        [ int x = GLAPIENTRY printf("");],
        HAS_GLAPIENTRY=yes, HAS_GLAPIENTRY=no)
      if test "x$HAS_GLAPIENTRY" != xno; then
         AC_MSG_RESULT(yes)
      else
         AC_MSG_RESULT(no)
      
         AC_MSG_CHECKING(for APIENTRY in GL/gl.h)
         AC_TRY_COMPILE([#include "GL/gl.h"],
           [ int x = APIENTRY printf("");],
           AC_DEFINE(GLAPIENTRY, APIENTRY) AC_MSG_RESULT(yes),
	   AC_DEFINE(GLAPIENTRY, ) AC_MSG_RESULT(no))
      fi
      if test "x$HAS_GLIDE" != xno; then
         CPPFLAGS="$GLIDE_CFLAGS $CPPFLAGS"
         AC_CHECK_HEADER(GL/fxmesa.h, HAS_FXMESA=yes, HAS_FXMESA=no)
      fi
   fi
   CPPFLAGS="$save_CPPFLAGS"
fi
if test "x$HAS_OGL" = xyes; then
  AC_DEFINE(HAS_OGL)
fi

dnl Make sure VIDMODE works
if test "x$HAS_VIDMODE" = xyes; then
   AC_CHECK_LIB(Xxf86vm, XF86VidModeSwitchToMode,qwfoo=qwfoo,
     HAS_VIDMODE=no HAS_DGA=no, [$X_LIBS -lXext -lX11 $X_EXTRA_LIBS])
fi
if test "x$HAS_VIDMODE" != xyes; then
   VIDMODE_LIBS=""
else
   AC_DEFINE(HAS_VIDMODE)
   VIDMODE_LIBS="-lXxf86vm"
fi

dnl Make sure DGA works
if test "x$HAS_DGA" = xyes; then
   AC_CHECK_LIB(Xxf86dga, XF86DGAQueryVersion,qwfoo=qwfoo,
     HAS_DGA=no, [$X_LIBS -lXext -lX11 $X_EXTRA_LIBS])
fi
if test "x$HAS_DGA" != xyes; then
   DGA_LIBS=""
else
   AC_DEFINE(HAS_DGA)
   DGA_LIBS="-lXxf86dga"
fi

dnl Make sure -lmgllt works
if test "x$HAS_MGL" = xyes; then
   MGL_LIBS="$MGL_LIBS -lgdi32 -lwinmm -ldinput -lddraw"
   AC_CHECK_LIB(mgllt,MGL_registerDriver, MGL_LIBS="-lmgllt $MGL_LIBS"
      HAS_MGL=yes, HAS_MGL=no, [$MGL_LIBS])
fi
if test "x$HAS_MGL" != xyes; then
   MGL_CFLAGS="" MGL_LIBS=""
fi

dnl Make sure -lggi works
if test "x$HAS_GGI" = xyes; then
   AC_CHECK_LIB(ggi, ggiEventsQueued, GGI_LIBS="$GGI_LIBS -lggi"
      HAS_GGI=yes, HAS_GGI=no, [$GGI_LIBS])
fi
if test "x$HAS_GGI" != xyes; then
   GGI_CFLAGS="" GGI_LIBS=""
fi
     
dnl Make sure -lvga works
if test "x$HAS_SVGA" = xyes; then
   AC_CHECK_LIB(vga, vga_getmousetype, SVGA_LIBS="$SVGA_LIBS -lvga"
     HAS_SVGA=yes, HAS_SVGA=no, [$SVGA_LIBS])
fi 
if test "x$HAS_SVGA" != xyes; then
   SVGA_CFLAGS="" SVGA_LIBS=""
fi

dnl Make sure -lpthread works (for SDL)
if test "x$HAS_SDL" = xyes; then
   AC_CHECK_LIB(pthread, pthread_exit ,SDL_LIBS="$SDL_LIBS -lpthread"
     HAS_SDL=yes, HAS_SDL=no, [$SDL_LIBS])
fi
if test "x$HAS_SDL" != xyes; then
   SDL_CFLAGS="" SDL_LIBS=""
fi

dnl Make sure -lSDL works
if test "x$HAS_SDL" = xyes; then
   AC_CHECK_LIB(SDL, SDL_Init, SDL_LIBS="$SDL_LIBS -lSDL"
     HAS_SDL=yes, HAS_SDL=no, [$SDL_LIBS])
fi
if test "x$HAS_SDL" != xyes; then
   SDL_CFLAGS="" SDL_LIBS=""
fi


dnl Make sure -lglide2x works
if test "x$HAS_GLIDE" = xyes; then
   AC_CHECK_LIB(glide2x, main, GLIDE_LIBS="$GLIDE_LIBS -lglide2x"
     HAS_GLIDE=yes, HAS_GLIDE=no, [$GLIDE_LIBS -lm])
fi
if test "x$HAS_GLIDE" != xyes; then
   GLIDE_CFLAGS="" GLIDE_LIBS=""
fi

dnl Make sure -lGL or -lMesaGL works
if test "x$HAS_OGL" = xyes; then
   AC_CHECK_LIB(GL, glColor4f, OGL_LIBS="$OGL_LIBS -lGL"
     HAS_OGL=yes
     OGL_NAME=GL
     if test "x$have_dynload" != "xyes"; then
       AC_CHECK_LIB(GL, XMesaSetFXmode, qwfoo=qwfoo, HAS_XMESA=no,
         [ $OGL_LIBS $X_LIBS -lXext -lX11 $X_EXTRA_LIBS])
     fi
     ,
     HAS_OGL=no,
     [$OGL_LIBS $X_LIBS -lXext -lX11 $X_EXTRA_LIBS])
   if test "x$HAS_OGL" != xyes; then
      AC_CHECK_LIB(MesaGL, glColor4f, OGL_LIBS="$OGL_LIBS -lMesaGL"
        HAS_OGL=yes
	OGL_NAME=MesaGL
        if test "x$have_dynload" != "xyes"; then
          AC_CHECK_LIB(MesaGL, XMesaSetFXmode, qwfoo=qwfoo, HAS_XMESA=no,
            [ $OGL_LIBS $X_LIBS -lXext -lX11 $X_EXTRA_LIBS])
        fi
        ,
        HAS_OGL=no,
	[$OGL_LIBS $X_LIBS -lXext -lX11 $X_EXTRA_LIBS])
   fi
fi
if test "x$HAS_OGL" != xyes; then
   OGL_CFLAGS="" OGL_LIBS=""
else
   if test "x$HAS_XMESA" = xyes; then
      AC_DEFINE(XMESA)
   fi
fi

dnl Check for xil
AC_CHECK_LIB(xil,xil_import, HAS_XIL=yes, HAS_XIL=no)

# 3Dfx stuff..

# First we see if we can use mesa with glide support..
# if not then try the MiniGL..

TDFXGL_NAME=""
AC_ARG_WITH(3dfx,
[  --with-3dfx             support 3Dfx output for the V1/V2, if a argument
                          is specified it will be used as the GL wrapper lib
                          for glide.],
   HAS_3dfx=$withval, HAS_3dfx=auto)
if test "x$HAS_3dfx" != "xno" -a "x$HAS_SVGA" != "xno" \
	-a "x$HAS_GLIDE" != "xno"; then
   if test "x$HAS_3dfx" != "xauto" -a "x$HAS_3dfx" != "xyes"; then
      TDFXGL_NAME="$HAS_3dfx"
   fi
   if test -z "$TDFXGL_NAME"; then
       dnl Check in reverse order of preference
       for a in 3dfxgl $OGL_NAME; do
	  AC_CHECK_LIB($a, fxMesaCreateContext, TDFXGL_NAME=$a, qwfoo=qwfoo,
	  [$GLIDE_LIBS $TDFXGL_LIBS])
       done
   fi
fi
AC_MSG_CHECKING(for 3Dfx support)
if test -n "$TDFXGL_NAME"; then
   TDFXGL_CFLAGS="$GLIDE_CFLAGS"
   TDFXGL_LIBS="$TDFXGL_LIBS $GLIDE_LIBS -l$TDFXGL_NAME"
   HAS_TDFXGL="yes"
   AC_MSG_RESULT(yes (using $TDFXGL_NAME))
else
   TDFXGL_NAME=""
   TDFXGL_LIBS=""
   HAS_TDFXGL="no"
   AC_MSG_RESULT(no)
fi


dnl CFLAGS for release and devel versions
if test "x$RELEASE" = xyes; then
   if test "x$GCC" = xyes; then
      AC_MSG_CHECKING(for special release compiler settings)
      BASE_RELEASE_CFLAGS="-O6 -ffast-math -funroll-loops -fomit-frame-pointer -fexpensive-optimizations"
      case "${target}" in
         changequote(,)dnl
         i?86-*-*)
         changequote([,])dnl
            MORE_RELEASE_CFLAGS="-malign-loops=2 -malign-jumps=2 -malign-functions=2"
	    ;;
         *)
	    MORE_RELEASE_CFLAGS=""
	    ;;
      esac
      if test "x$MORE_RELEASE_CFLAGS" = x; then
         RELEASE_CFLAGS=-O
         AC_MSG_RESULT([no])
         RELEASE_CFLAGS=$BASE_RELEASE_CFLAGS
      else
         AC_MSG_RESULT(yes)
         RELEASE_CFLAGS="$BASE_RELEASE_CFLAGS $MORE_RELEASE_CFALGS"
      fi
   else
      RELEASE_CFLAGS=-O2
   fi
fi

dnl Quakeforge code has lots of C++ comments, which cause
dnl problems with any compiler that is ANSI/ISO-C compliant.
dnl Make the compiler swallow its pride...
if test "x$GCC" != xyes; then
   AC_MSG_CHECKING(for how to deal with C++ comments)
   case "$target" in
   *-aix*)
	CFLAGS="$CFLAGS -qcpluscmt"
        AC_MSG_RESULT([-qcpluscmt])
	;;
   *-irix6*)
	CFLAGS="$CFLAGS -Xcpluscomm"
        AC_MSG_RESULT([-Xcpluscomm])
	;;
   *-solaris*)
	CFLAGS="$CFLAGS -xCC"
        AC_MSG_RESULT([-xCC])
	;;
   *)
        AC_MSG_RESULT(nothing needed or no switch known)
	;;
  esac
fi

dnl We want warnings, lots of warnings...
if test "x$GCC" = xyes; then
   CFLAGS="$CFLAGS -Wall -Werror"
fi
#   CFLAGS="$CFLAGS -Wall -pedantic"

dnl Check for ia32
AC_MSG_CHECKING(for an ia32 machine)
case "${target}" in
   i?86-*-*)
      INTEL_ARCH=yes
      AC_MSG_RESULT(yes)
AC_MSG_CHECKING(to see if we should disable asm optimizations)
AC_ARG_ENABLE(asmopt,
[  --disable-asmopt        disable assembler optimization],
	ASM_ARCH=none, ASM_ARCH=i386
)
if test "x$NO_ASMOPT" = xyes; then
	AC_MSG_RESULT(yes)
else
	AC_MSG_RESULT(no)	
fi
          ;;
   *) AC_MSG_RESULT(no)
      ASM_ARCH=none
esac


dnl Check for sound libraries
AC_CHECK_LIB(mme,waveOutOpen,HAVE_LIBMME=yes)

SOUND_STYLE=""
AC_MSG_CHECKING(for sound support)
if test "x$enable_alsa" != "xno"; then
   if test -z "$SOUND_STYLE" -a "x$ac_cv_header_sys_asoundlib_h" = "xyes"; then
      AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <sys/asoundlib.h>
#if defined(SND_LIB_MAJOR) && defined(SND_LIB_MINOR)
#if SND_LIB_MAJOR>0 || (SND_LIB_MAJOR==0 && SND_LIB_MINOR>=5)
QF_maGiC_VALUE
#endif
#endif
      ],[ SOUND_STYLE="ALSA" SOUND_LIBS="-lasound"])
   fi
fi

if test -z "$SOUND_STYLE" -a "x$ac_cv_header_sys_soundcard_h" = "xyes"; then
   AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <sys/soundcard.h>
#ifdef SNDCTL_DSP_SETTRIGGER
QF_maGiC_VALUE
#endif
    ], SOUND_STYLE="OSS")
fi
if test -z "$SOUND_STYLE" -a "x$ac_cv_header_linux_soundcard_h" = "xyes"; then
   AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <linux/soundcard.h>
#ifdef SNDCTL_DSP_SETTRIGGER
QF_maGiC_VALUE
#endif
    ], SOUND_STYLE="OSS")
fi
if test -z "$SOUND_STYLE" -a "x$ac_cv_header_machine_soundcard_h" = "xyes"; then
   AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <machine/soundcard.h>
#ifdef SNDCTL_DSP_SETTRIGGER
QF_maGiC_VALUE
#endif
    ], SOUND_STYLE="OSS")
fi

if test -z "$SOUND_STYLE" -a "x$ac_cv_header_sys_audioio_h" = "xyes"; then
  AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <sys/audioio.h>
#ifdef AUDIO_SETINFO
QF_maGiC_VALUE
#endif
    ], SOUND_STYLE="Solaris")
fi
if test -z "$SOUND_STYLE" -a "x$ac_cv_header_mme_mmsystem_h" = "xyes" -a \
	"x$HAVE_LIBMME" = "xyes"; then
  AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <mme/mmsystem.h>
#ifdef WAVE_OPEN_SHAREABLE
QF_maGiC_VALUE
#endif
    ], SOUND_STYLE="MME"
       SOUND_LIBS="-lmme")
fi

if test -z "$SOUND_STYLE" -a "x$ac_cv_header_windows_h" = "xyes" -a \
	"x$ac_cv_header_mmsystem_h" = "xyes"; then
  AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <windows.h>
#include <mmsystem.h>
#ifdef GMEM_MOVEABLE
#ifdef WAVE_FORMAT_PCM
QF_maGiC_VALUE
#endif
#endif
    ], SOUND_STYLE="Windows"
       SOUND_LIBS="-lwinmm")
fi

if test -z "$SOUND_STYLE"; then
    AC_EGREP_CPP([QF_maGiC_VALUE],[
#ifdef __DJGPP
QF_maGiC_VALUE
#endif
    ], SOUND_STYLE="DJGPP")
fi

if test "x$SOUND_STYLE" = "x"; then
   AC_MSG_RESULT(no)
   SOUND_STYLE="NULL"
else
   AC_MSG_RESULT(yes ($SOUND_STYLE style))
fi


dnl ========================================================================
dnl Check for CD-ROM

AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <linux/cdrom.h>
#ifdef CDROMREADTOCENTRY
QF_maGiC_VALUE
#endif
    ], AC_DEFINE(USE_LINUX_CD),
      AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <sys/cdio.h>
#if defined (CDIOREADTOCENTRY) || defined (CDIOREADTOCENTRYS)
QF_maGiC_VALUE
#endif
    ], AC_DEFINE(USE_BSD_CD))
)
AC_HAVE_STRUCT_FIELD(struct ioc_read_toc_single_entry, entry,[
#include <sys/cdio.h>
])


dnl ========================================================================
dnl Check for networking

dnl Check for network libraries
if test "x$ac_cv_func_connect" != "xyes"; then
  AC_CHECK_LIB(socket,connect,
    NET_LIBS="$NET_LIBS -lsocket"
    ac_cv_func_connect=yes)
fi
if test "x$ac_cv_func_gethostbyname" != "xyes"; then
  AC_CHECK_LIB(nsl,gethostbyname,
    NET_LIBS="$NET_LIBS -lnsl"
    ac_cv_func_gethostbyname=yes)
fi

AC_MSG_CHECKING([for connect in -lwsock32])
SAVELIBS="$LIBS"
LIBS="$LIBS -lwsock32"
AC_TRY_LINK([
#include <winsock.h>
],[
connect(0, NULL, 42);
],
  NET_LIBS="$NET_LIBS -lwsock32 -lwinmm"
  ac_cv_func_connect=yes
  ac_cv_func_gethostbyname=yes
  HAVE_WSOCK=yes
  AC_MSG_RESULT(yes),
  AC_MSG_RESULT(no))
LIBS="$SAVELIBS"

AC_MSG_CHECKING(for UDP support)
if test "x$ac_cv_func_connect" = "xyes" -a \
	"x$ac_cv_func_gethostbyname" = "xyes"; then
  HAVE_UDP=yes
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi


dnl Checks for which system driver to use
AC_MSG_CHECKING(for system driver)
case "${target}" in
   *-*-linux-gnu*)
      SYS_SRC="sys_linux.c"
      QW_CL_SYS_SRC="sys_linux.c"
      QW_SRV_SYS_SRC="sys_unix.c"
      ;;
   i?86-*-mingw32*)
      SYS_SRC="sys_win.c"
      QW_CL_SYS_SRC="sys_win.c"
      QW_SRV_SYS_SRC="sys_win.c"
      ;;
   i?86-*-*djgpp* | i?86-*-*msdos*)
      SYS_SRC="sys_dos.c"
      QW_CL_SYS_SRC=""
      QW_SRV_SYS_SRC=""
      ;;
   *)
      SYS_SRC="sys_unix.c" 
      QW_CL_SYS_SRC="sys_linux.c"
      QW_SRV_SYS_SRC="sys_unix.c"
      DEFAULT_SYS=yes
      ;;
# XXX - dos  - conproc.c(?) sys_dos.c
# XXX - need to add dos
esac
if test "x$DEFAULT_SYS" = xyes; then
AC_MSG_RESULT([no, using default])
else
AC_MSG_RESULT(yes ($SYS_SRC $QW_CL_SYS_SRC $QW_SRV_SYS_SRC))
fi

dnl check for X11 video driver
AC_MSG_CHECKING(for X11 video driver)
case "${target}" in
   *-solaris*) 
      X11_VID_SRC="vid_sunx.c" 
      LIBS="$LIBS -lsocket -lnsl" 
      ;;
   *)
      if test "x$HAS_X11"; then
         X11_VID_SRC="vid_x11.c";
      else
         X11_VID_SRC=
      fi
     ;;
esac
if test "x$X11_VID_SRC" = x; then
AC_MSG_RESULT(no)
else
AC_MSG_RESULT(yes ($X11_VID_SRC))
fi

dnl Check for system services
AC_EXEEXT
AC_OBJEXT


AC_SUBST(libdir)
AC_SUBST(RELEASE)
AC_SUBST(RELEASE_CFLAGS)
AC_SUBST(HAS_XIL)
AC_SUBST(X_LIBS)
AC_SUBST(X_CFLAGS)
AC_SUBST(X11_SHM_LIB)
AC_SUBST(HAS_X11)
AC_SUBST(HAD_VIDMODE)
AC_SUBST(HAS_DGA)
AC_SUBST(VIDMODE_LIBS)
AC_SUBST(DGA_LIBS)
AC_SUBST(HAS_VGA)
AC_SUBST(VGA_CFLAGS)
AC_SUBST(VGA_LIBS)
AC_SUBST(HAS_MGL)
AC_SUBST(MGL_CFLAGS)
AC_SUBST(MGL_LIBS)
AC_SUBST(HAS_GGI)
AC_SUBST(GGI_CFLAGS)
AC_SUBST(GGI_LIBS)
AC_SUBST(HAS_SVGA)
AC_SUBST(SVGA_CFLAGS)
AC_SUBST(SVGA_LIBS)
AC_SUBST(HAS_GLIDE)
AC_SUBST(GLIDE_CFLAGS)
AC_SUBST(GLIDE_LIBS)
AC_SUBST(HAS_OGL)
AC_SUBST(OGL_INCLUDES)
AC_SUBST(OGL_CFLAGS)
AC_SUBST(OGL_LIBS)
AC_SUBST(HAS_TDFXGL)
AC_SUBST(TDFXGL_CFLAGS)
AC_SUBST(TDFXGL_LIBS)
AC_SUBST(HAS_SDL)
AC_SUBST(SDL_CFLAGS)
AC_SUBST(SDL_LIBS)
AC_SUBST(SOUND_STYLE)
AC_SUBST(SOUND_LIBS)
AC_SUBST(LIBS)
AC_SUBST(INTEL_ARCH)
AC_SUBST(ASM_ARCH)
AC_SUBST(NET_LIBS)
AC_SUBST(SYS_SRC)
AC_SUBST(QW_CL_SYS_SRC)
AC_SUBST(QW_SRV_SYS_SRC)
AC_SUBST(X11_VID_SRC)
AC_SUBST(HAVE_WSOCK)
AC_SUBST(HAVE_UDP)
AC_SUBST(NET_SOURCE)
AC_SUBST(VERSION)
AC_SUBST(QF_VERSION)
AC_SUBST(ac_configure_args)
AC_SUBST(GENERATIONS)

dnl Output files
AC_CONFIG_HEADER(common/config.h)
AC_OUTPUT(
	qw_client/Makefile
	qw_server/Makefile
	uquake/Makefile
	common/Makefile
	Makefile
	Rules.mk
	rpm/quakeforge.spec
	rpm/build_rpm
	,
	chmod +x rpm/build_rpm
)