dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.13)
AC_INIT(source/sv_main.c)
AC_REVISION($Revision$) dnl
AM_CONFIG_HEADER(include/config.h)
AC_CANONICAL_SYSTEM
AC_VALIDATE_CACHED_SYSTEM_TUPLE(
	rm $cache_file
	echo restart configure
	exit 1
)

dnl This is the only place where the package version appears
AM_INIT_AUTOMAKE(quakeforge, 0.3.1)

dnl Define the proper name and extra version numbers for package
PROGRAM=QuakeForge
QW_VERSION=2.40
QSG_VERSION=2.0

AC_DEFINE_UNQUOTED(PROGRAM, 	"$PROGRAM", ["Proper" package name])
AC_DEFINE_UNQUOTED(QW_VERSION,	"$QW_VERSION", [Define this to the QuakeWorld standard version you support])
AC_DEFINE_UNQUOTED(QSG_VERSION,	"$QSG_VERSION", [Define this to the QSG standard version you support in QuakeWorld])

AC_SUBST(PROGRAM)
AC_SUBST(QW_VERSION)
AC_SUBST(QSG_VERSION)

ISODATE=`date +%Y-%m-%d`
AC_SUBST(ISODATE)

AC_LANG_C

if test ${AR-unset} = unset; then
	AR="ar"
fi
endian=""
case "$host_os" in
	mingw32*)
		mingw=yes
		CPPFLAGS="$CPPFLAGS -I\$(top_srcdir)/include/win32"
		CPPFLAGS="$CPPFLAGS -I\$(top_srcdir)/include/win32/resources"
		if test $host != $build; then
			CC="$host_cpu-$host_os-gcc"
			AR="$host_cpu-$host_os-ar"
			RANLIB="$host_cpu-$host_os-ranlib"
			endian="little"
		fi
		;;
esac
AC_SUBST(AR)

dnl ==================================================================
dnl Checks for programs.
dnl ==================================================================

AC_PROG_INSTALL
AC_PROG_CC
AC_PROG_CPP
AC_PROG_LN_S
AC_PROG_RANLIB
AM_PROG_LEX
AC_PROG_YACC

AC_CHECK_LIB(l, main, LEXLIB="-ll",
	AC_CHECK_LIB(fl, main, LEXLIB="-lfl")
)
AC_SUBST(LEXLIB)

dnl ==================================================================
dnl Checks for system services
dnl ==================================================================

AC_SYS_LONG_FILE_NAMES
AC_EXEEXT
AC_OBJEXT

dnl ==================================================================
dnl Checks for header files.
dnl ==================================================================

AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_MAJOR
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(
	arpa/inet.h asm/io.h assert.h conio.h ctype.h ddraw.h dinput.h \
	direct.h dirent.h dlfcn.h dpmi.h \
	dsound.h errno.h fcntl.h glide/sst1vid.h io.h \
	libc.h limits.h linux/cdrom.h linux/joystick.h linux/soundcard.h \
	machine/soundcard.h malloc.h math.h mgraph.h mme/mmsystem.h \
	mme/mme_public.h _mingw.h netdb.h \
	netinet/in.h pwd.h rpc/types.h setjmp.h signal.h stdarg.h stdio.h \
	stdlib.h string.h strings.h sys/asoundlib.h sys/audioio.h sys/filio.h \
	sys/ioctl.h sys/io.h sys/ipc.h sys/mman.h sys/param.h sys/poll.h \
	sys/shm.h sys/signal.h sys/socket.h sys/soundcard.h sys/stat.h \
	sys/time.h sys/types.h sys/wait.h time.h unistd.h \
	vgakeyboard.h vgamouse.h windows.h winsock.h zlib.h
)

if test "x$mingw" = xyes; then
	AC_MSG_CHECKING(for fnmatch.h)
	AC_MSG_RESULT(yes)
	AC_DEFINE(HAVE_FNMATCH_H, 1, [Define this if you have fnmatch.h])
else
	AC_CHECK_HEADERS(fnmatch.h)
fi

dnl ==================================================================
dnl Checks for typedefs, structures, and compiler characteristics
dnl ==================================================================

AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_STRUCT_ST_BLKSIZE
AC_HEADER_TIME
AC_STRUCT_TM

if test "x$cross_compiling" = xyes; then
	AC_MSG_CHECKING(whether byte ordering is bigendian)
	AC_ARG_WITH(endian,
[  --with-endian=TYPE      set endian of target system for
                          cross-compiling. TYPE = little or big.],
		endian="$withval",
	)
	case "x$endian" in
		xbig)
			AC_DEFINE(WORDS_BIGENDIAN)
			AC_MSG_RESULT(yes)
			;;
		xlittle)
			AC_MSG_RESULT(no)
			;;
		x)
			AC_MSG_RESULT(unspecified, use --with-endian={big,little})
			exit 1
			;;
		x*)
			AC_MSG_RESULT(unregognized endianess)
			exit 1
			;;
	esac
else
	AC_C_BIGENDIAN
fi

AC_CHECK_FUNCS(usleep)

AC_MSG_CHECKING(that fnmatch is in fnmatch.h)
AC_TRY_COMPILE(
	[#include "fnmatch.h"],
	[int (*foo)() = fnmatch;],
	AC_DEFINE(HAVE_FNMATCH_PROTO, 1, [Define this if fnmatch is prototyped in fnmatch.h])
	AC_MSG_RESULT(yes),
	AC_MSG_RESULT(no)
)

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, 1, [Define this if your system has 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, 1, [Define this if your system has socklen_t]) AC_MSG_RESULT(yes),
		AC_MSG_RESULT(no)
	)
)

AC_MSG_CHECKING(for underscore prefix in names)
AC_TRY_LINK(
	[asm(".long _bar");
	int bar;],
	[],
	AC_DEFINE(HAVE_SYM_PREFIX_UNDERSCORE, 1, [Define this if C symbols are prefixed with an underscore]) 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, 1, [Define this if your system has size_t]) AC_MSG_RESULT(yes),
	AC_MSG_RESULT(no)
)

dnl maybe these two (at least the 2nd) should only be checked if ipv6 is enabled?
AC_MSG_CHECKING(for ss_len in struct sockaddr_storage)
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, 1, [Define this if you have ss_len member in struct sockaddr_storage (BSD)]) 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, 1, [Define this if you have sin6_len member in struct sockaddr_in6 (BSD)]) 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, 1, [Define this if you have sa_len member in struct sockaddr (BSD)]) AC_MSG_RESULT(yes),
	AC_MSG_RESULT(no)
)

AC_MSG_CHECKING(for zero length array syntax)
AC_TRY_COMPILE(
	[],
	[struct { int foo; int bar[0]; } foo;],
	AC_DEFINE(ZERO_LENGTH_ARRAY,0,[zero lenth arrays]) AC_MSG_RESULT([0]),
	AC_TRY_COMPILE(
	    [],
		[struct { int foo; int bar[]; } foo;],
		AC_DEFINE(ZERO_LENGTH_ARRAY,) AC_MSG_RESULT([]),
		AC_DEFINE(ZERO_LENGTH_ARRAY,1,[zero lenth arrays]) AC_MSG_RESULT([1] sorry about the waste)
	)
)

dnl ==================================================================
dnl Checks for library functions.
dnl ==================================================================

AC_FUNC_ALLOCA
AC_FUNC_MEMCMP
AC_FUNC_MMAP
AC_TYPE_SIGNAL
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(
	access _access \
	connect dlopen fcntl ftime getaddrinfo gethostname gethostbyname \
	getnameinfo gettimeofday mkdir _mkdir select socket stat strerror \
	strstr snprintf vsnprintf _snprintf _vsnprintf mprotect
)

dnl Checks for stricmp/strcasecmp
#AC_CHECK_FUNC(strcasecmp,,
#	AC_CHECK_FUNC(stricmp,
#		AC_DEFINE(strcasecmp, stricmp),
#		AC_MSG_ERROR([Neither stricmp nor strcasecmp found])
#	)
#)
AC_CHECK_FUNC(strcasecmp, strcasecmp=yes, strcasecmp=no)
if test $strcasecmp = no; then
	AC_CHECK_FUNC(stricmp, 
		AC_DEFINE(strcasecmp, stricmp, [Define strcasecmp as stricmp if you have one but not the other]),
		AC_MSG_ERROR([Neither stricmp nor strcasecmp found])
	)
fi

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

DL_LIBS=""
if test "x$ac_cv_func_dlopen" != "xyes"; then
	AC_CHECK_LIB(dl, dlopen,
		AC_DEFINE(HAVE_DLOPEN, 1, [Define if you have the dlopen function.]) DL_LIBS="-ldl"
	)
fi
AC_SUBST(DL_LIBS)

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

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

if test "x$enable_zlib" != "xno"; then
  dnl Check for working -lz
  dnl Note - must have gztell *and* gzgets in -lz *and* zlib.h
  AC_CHECK_LIB(z, gztell, HAVE_ZLIB=yes, HAVE_ZLIB=no, [$LIBS])
  if test "x$HAVE_ZLIB" = "xyes"; then
     AC_CHECK_LIB(z, gzgets, HAVE_ZLIB=yes, HAVE_ZLIB=no, [$LIBS])
     if test "x$HAVE_ZLIB" = "xyes"; then
        AC_CHECK_HEADER(zlib.h, HAVE_ZLIB=yes, HAVE_ZLIB=no)
        if test "x$HAVE_ZLIB" = "xyes"; then
           Z_LIBS="-lz"
           AC_DEFINE(HAVE_ZLIB, 1, [Define if you have zlib])
        fi
     fi
  fi
fi


AC_ARG_WITH(ipv6,
[  --with-ipv6             enable IPv6 support. Optional argument specifies
                          location of inet6 libraries.],
	if test "x$withval" = xno ; then
		NETTYPE_IPV6=no
	else
		AC_DEFINE(HAVE_IPV6, 1, [Define this if you want IPv6 support])
		NETTYPE_IPV6=yes
		if test "x$withval" != xyes ; then
			LIBS="$LIBS -L${withval}"
		fi
	fi
,
	NETTYPE_IPV6=no
)
AM_CONDITIONAL(NETTYPE_IPV6, test "x$NETTYPE_IPV6" = "xyes")

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

		dnl Make sure -lmgllt or -lmglfx works
		if test "x$HAVE_MGL" = xyes; then
			for lib in mglfx mgllt; do 
				MGL_LIBS="$MGL_LIBS -lgdi32 -lwinmm -ldinput -lddraw"
				AC_CHECK_LIB($lib, MGL_registerDriver,
					MGL_LIBS="-l$lib $MGL_LIBS"
					HAVE_MGL=yes
					break,
					HAVE_MGL=no,
					[$MGL_LIBS]
				)
			done
		fi
	fi
	if test "x$HAVE_MGL" != xyes; then
		MGL_CFLAGS="" MGL_LIBS=""
	fi
fi
AC_SUBST(HAVE_MGL)
AC_SUBST(MGL_CFLAGS)
AC_SUBST(MGL_LIBS)

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

	dnl Make sure -lggi works
	if test "x$HAVE_GGI" = xyes; then
		AC_CHECK_LIB(ggi, ggiEventsQueued,
			GGI_LIBS="$GGI_LIBS -lggi"
			HAVE_GGI=yes,
			HAVE_GGI=no,
			[$GGI_LIBS]
		)
	fi 
	if test "x$HAVE_GGI" != xyes; then
		GGI_CFLAGS="" GGI_LIBS=""
	fi
fi
AC_SUBST(HAVE_GGI)
AC_SUBST(GGI_CFLAGS)
AC_SUBST(GGI_LIBS)

dnl Checks for Linux FBDev support
AC_ARG_WITH(fbdev,
[  --with-fbdev            use Linux framebuffer device],
HAVE_FBDEV=$withval, HAVE_FBDEV=no)
if test "x$HAVE_FBDEV" != xno; then
	dnl We should still be able to compile it even if
	dnl there is no fbdev support in the running kernel
	AC_CHECK_HEADER(linux/fb.h, HAVE_FBDEV=yes, HAVE_FBDEV=no)
fi
AC_SUBST(HAVE_FBDEV)
if test "x$HAVE_FBDEV" = xyes; then
	AC_MSG_CHECKING(for FB_AUX_VGA_PLANES_VGA4)
	AC_TRY_COMPILE(
		[#include "linux/fb.h"],
		[int foo = FB_AUX_VGA_PLANES_VGA4;],
		AC_DEFINE(HAVE_FB_AUX_VGA_PLANES_VGA4, 1, [Define this if you have FB_AUX_VGA_PLANES_VGA4])
		AC_MSG_RESULT(yes),
		AC_MSG_RESULT(no)
	)
	AC_MSG_CHECKING(for FB_AUX_VGA_PLANES_CFB4)
	AC_TRY_COMPILE(
		[#include "linux/fb.h"],
		[int foo = FB_AUX_VGA_PLANES_CFB4;],
		AC_DEFINE(HAVE_FB_AUX_VGA_PLANES_CFB4, 1, [Define this if you have HAVE_FB_AUX_VGA_PLANES_CFB4])
		AC_MSG_RESULT(yes),
		AC_MSG_RESULT(no)
	)
	AC_MSG_CHECKING(for FB_AUX_VGA_PLANES_CFB8)
	AC_TRY_COMPILE(
		[#include "linux/fb.h"],
		[int foo = FB_AUX_VGA_PLANES_CFB8;],
		AC_DEFINE(HAVE_FB_AUX_VGA_PLANES_CFB8, 1, [Define this if you have HAVE_FB_AUX_VGA_PLANES_CFB8])
		AC_MSG_RESULT(yes),
		AC_MSG_RESULT(no)
	)
fi

dnl Checks for SVGALib support
AC_ARG_WITH(svga,
[  --with-svga[=DIR]       use SVGALib found in DIR],
HAVE_SVGA=$withval, HAVE_SVGA=auto)
if test "x$HAVE_SVGA" != xno; then
	if test "x$HAVE_SVGA" != xauto; then
		SVGA_CFLAGS="$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 $SVGA_CFLAGS"
	AC_CHECK_HEADER(vga.h, HAVE_SVGA=yes, HAVE_SVGA=no)
	CPPFLAGS="$save_CPPFLAGS"

	dnl Make sure -lvga works
	if test "x$HAVE_SVGA" = xyes; then
		AC_CHECK_LIB(vga, vga_getmousetype, SVGA_LIBS="$SVGA_LIBS -lvga"
			HAVE_SVGA=yes, HAVE_SVGA=no, [$SVGA_LIBS]
		)
	fi 
	if test "x$HAVE_SVGA" != xyes; then
		SVGA_CFLAGS="" SVGA_LIBS=""
	fi
fi
AC_SUBST(HAVE_SVGA)
AC_SUBST(SVGA_CFLAGS)
AC_SUBST(SVGA_LIBS)

dnl Checks for X11 and XShm
if test "x$mingw" != xyes; then
	AC_PATH_XTRA
	if test "x$no_x" = x; then
		HAVE_X=yes
		AC_CHECK_LIB(Xext, XShmQueryExtension,
			X_SHM_LIB=-lXext,
			HAVE_X=no,
			[ $X_LIBS -lX11 $X_EXTRA_LIBS ]
		)
	fi
	AC_SUBST(X_SHM_LIB)
fi

dnl Check for XFree86-VidMode support
AC_ARG_ENABLE(vidmode,
[  --enable-vidmode        use XFree86 VidMode extension, if available],
HAVE_VIDMODE=$enable_vidmode, HAVE_VIDMODE=auto)
if test "x$HAVE_VIDMODE" != xno; then
	save_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="$X_CFLAGS $CPPFLAGS"
	AC_CHECK_HEADER(X11/extensions/xf86vmode.h,
		dnl Make sure the library works
		AC_CHECK_LIB(Xxf86vm, XF86VidModeSwitchToMode,
			AC_DEFINE(HAVE_VIDMODEi, 1, [Define if you have the XFree86 VIDMODE extension])
			VIDMODE_LIBS="-lXxf86vm",,
			[$X_LIBS -lXext -lX11 $X_EXTRA_LIBS]
		)
	)
	CPPFLAGS="$save_CPPFLAGS"
fi
AC_SUBST(VIDMODE_LIBS)

dnl Check for DGA support
AC_ARG_ENABLE(dga,
[  --enable-dga            use XFree86 DGA extension, if available],
HAVE_DGA=$enable_dga, HAVE_DGA=auto)
if test "x$HAVE_DGA" != xno; then
	save_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="$X_CFLAGS $CPPFLAGS"
	AC_CHECK_HEADER(X11/extensions/xf86dga.h,
		dnl Make sure the library works
		AC_CHECK_LIB(Xxf86dga, XF86DGAQueryVersion,
			AC_DEFINE(HAVE_DGA, 1, [Define if you have the XFree86 DGA extension])
			DGA_LIBS="-lXxf86dga",,
			[$X_LIBS -lXext -lX11 $X_EXTRA_LIBS]
		)
	)
	CPPFLAGS="$save_CPPFLAGS"
fi
AC_SUBST(DGA_LIBS)

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
	else
		AC_DEFINE(HAVE_GLIDE, 1, [Define if you have the glide stuff])
	fi
	CPPFLAGS="$save_CPPFLAGS"
fi
AC_SUBST(GLIDE_CFLAGS)
AC_SUBST(GLIDE_LIBS)

dnl Checks for GLX support
AC_ARG_WITH(glx,
[  --with-glx[=DIR]        use GLX with libraries found in DIR],
	glx_libraries=$withval, glx_libraries=auto
)
AC_ARG_WITH(glx-includes,
[  --with-glx-includes[=DIR]
                          use GLX with header files found in DIR],
	glx_includes=$withval, glx_includes=auto
)
if test "x$glx_includes" = xno; then
	glx_libraries=""
fi
if test "x$glx_librariesS" = xno; then
	glx_includes=""
fi

dnl Checks for GLX headers. lib[Mesa]GL should be either in a standard
dnl include directory or the X include directory. Either way, we
dnl use X_CFLAGS.
if test "x$glx_includes" != xauto -a "x$glx_includes" != x; then
	save_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="$CPPFLAGS -I$glx_includes"
	AC_CHECK_HEADER($glx_includes/GL/gl.h, HAVE_GLX=yes, HAVE_GLX=no )
	CPPFLAGS="$save_CPPFLAGS"
else
	save_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="$CPPFLAGS $X_CFLAGS"
	AC_CHECK_HEADER(GL/gl.h, HAVE_GLX=yes, HAVE_GLX=no)
	CPPFLAGS="$save_CPPFLAGS"
fi

save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $X_CFLAGS"
dnl Checks for OpenGL features in headers
if test "x$HAVE_GLX" != xno; then
	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, 1, [Define if you have HAVE_GL_COLOR_INDEX8_EXT]) AC_MSG_RESULT(yes),
		AC_MSG_RESULT(no)
	)
	AC_CHECK_HEADERS(GL/glext.h, HAVE_GL_GLEXT_H=yes)
fi
CPPFLAGS="$save_CPPFLAGS"

dnl Make sure -lGL or -lMesaGL or -lopengl32 works
if test "x$glx_libraries" != xauto -a "x$glx_libraries" != xno -a "x$glx_libraries" != x; then
	if test "x$HAVE_GLX" = xyes; then
		HAVE_GLX=no
		AC_CHECK_LIB(GL, glColor4f,
			HAVE_GLX=yes
			OGL_NAME=GL,,
			[ -L$glx_libraries -lX11 $X_EXTRA_LIBS ]
		)
		if test "x$HAVE_GLX" != xyes; then
			AC_CHECK_LIB(MesaGL, glColor4f,
				HAVE_GLX=yes
				OGL_NAME=MesaGL,,
				[ -L$glx_libraries -lX11 $X_EXTRA_LIBS ]
			)
		fi
		if test "x$HAVE_GLX" != xyes; then
			AC_CHECK_LIB(opengl32, glColor4f,
				HAVE_GLX=yes
				OGL_NAME=opengl32,,
				[ -L$glx_libraries ]
			)
		fi
	fi
else
	if test "x$glx_libraries" != xauto \
			-o "x$glx_libraries" != xno \
			-o "x$glx_libraries" != x; then
		glx_libraries=""
	fi
	
	if test "x$HAVE_GLX" = xyes; then
		HAVE_GLX=no
		AC_CHECK_LIB(GL, glColor4f,
			HAVE_GLX=yes
			OGL_NAME=GL,,
			[ $X_LIBS ]
		)
		if test "x$HAVE_GLX" != xyes; then
			AC_CHECK_LIB(MesaGL, glColor4f,
				HAVE_GLX=yes
				OGL_NAME=MesaGL,,
				[ $X_LIBS ]
			)
		fi
		if test "x$HAVE_GLX" != xyes; then
			LIBS_save="$LIBS"
			LIBS="$LIBS -lopengl32"
			AC_MSG_CHECKING(for glColor4f in -lopengl32)
			AC_TRY_LINK(
				[#include <GL/gl.h>],
				[glColor4f(0,0,0,0);],
				HAVE_GLX=yes
				OGL_NAME=opengl32
				AC_MSG_RESULT(yes),
				AC_MSG_RESULT(no)
			)
			LIBS="$LIBS_save"
		fi
	fi
fi

if test "x$HAVE_GLX" = xyes; then
	test "x$GLX_CFLAGS" != x &&	GLX_CFLAGS="-I$GLX_CFLAGS"
	test "x$glx_libraries" != x && GLX_LIBS="-L$glx_libraries"
	GLX_LIBS="$GLX_LIBS -l$OGL_NAME"
	AC_DEFINE(HAVE_GLX, 1, [Define if you have GL/X11 stuff])
else
	GLX_CFLAGS=""
	GLX_LIBS=""
fi
AC_SUBST(GLX_CFLAGS)
AC_SUBST(GLX_LIBS)

AC_ARG_ENABLE(sdl,
[  --disable-sdl           disable checking for SDL],
)

if test "x$enable_sdl" != xno; then
	dnl SDL/SDL-GL checks
	AM_PATH_SDL(1.0.1, HAVE_SDL=yes, HAVE_SDL=no)

	if test "x$HAVE_SDL" != xno; then
		AM_CHECK_SGL(1.1.1, HAVE_SGL=yes, HAVE_SGL=no)
	fi
	AC_SUBST(HAVE_SDL)
	AC_SUBST(HAVE_SGL)
fi

# 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 an 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="$GLIDE_CFLAGS"
   TDFXGL_LIBS="$GLIDE_LIBS -l$TDFXGL_NAME"
   HAVE_TDFXGL="yes"
   AC_MSG_RESULT(yes (using $TDFXGL_NAME))
else
   TDFXGL_CFLAGS=""
   TDFXGL_NAME=""
   TDFXGL_LIBS=""
   AC_MSG_RESULT(no)
fi
AC_SUBST(TDFXGL_CFLAGS)
AC_SUBST(TDFXGL_LIBS)

dnl ==================================================================
dnl Checks for system type
dnl ==================================================================

dnl Checks for which system driver to use
AC_MSG_CHECKING(for system driver)
case "${host}" in
   i?86-*-mingw32*)
	SYSTYPE=WIN32
	AC_MSG_RESULT([Win32 driver])
	;;
   *)
	SYSTYPE=POSIX
	AC_MSG_RESULT([default POSIX driver])
	;;
esac
AM_CONDITIONAL(SYSTYPE_WIN32, test "$SYSTYPE" = "WIN32")

dnl Check for ia32
AC_MSG_CHECKING(for an ia32 machine)
case "${host}" in
	i?86-*-*)
		AC_MSG_RESULT(yes)
		AC_MSG_CHECKING(to see if we should disable asm optimizations)
		AC_ARG_ENABLE(asmopt,
			[  --disable-asmopt        disable assembler optimization],
			AC_MSG_RESULT(yes),
 			AC_DEFINE(USE_INTEL_ASM, 1, [Define this if you want to use Intel assembly optimizations])
			ASM_ARCH=yes
			AC_MSG_RESULT(no)
		)
		;;
	*) AC_MSG_RESULT(no)
esac
AM_CONDITIONAL(ASM_ARCH, test "$ASM_ARCH")

dnl ==================================================================
dnl Checks for sound
dnl ==================================================================

AC_CHECK_LIB(mme,waveOutOpen,HAVE_LIBMME=yes)

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

SNDTYPE=""
SOUND_LIBS=""
SOUND_CFLAGS=""
AC_MSG_CHECKING(for sound support)

dnl SDL digital audio
AC_ARG_ENABLE(sdl-audio,
[  --enable-sdl-audio      use SDL for audio output],
	if test -z "$SNDTYPE" -a "x$HAVE_SDL" = "xyes"; then
		SNDTYPE="SDL"
		SOUND_LIBS="$SDL_LIBS"
	fi
)

if test "x$enable_alsa" != "xno"; then
	if test -z "$SNDTYPE" -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
			],
			SNDTYPE="ALSA_0_5"
			SOUND_LIBS="-lasound",
			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>=9)
QF_maGiC_VALUE
#endif
#endif
				],
				SNDTYPE="ALSA_0_9"
				SOUND_LIBS="-lasound"
			)
		)
	fi
fi

dnl MME
if test -z "$SNDTYPE" -a "x$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
		],
		SNDTYPE="MME"
		SOUND_LIBS="-lmme"
	)
fi

dnl OSS
if test -z "$SNDTYPE" -a "x$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
	], SNDTYPE="OSS")
fi
if test -z "$SNDTYPE" -a "x$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
	], SNDTYPE="OSS")
fi
if test -z "$SNDTYPE" -a "x$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
	], SNDTYPE="OSS")
fi

dnl SGI
if test -z "$SNDTYPE" -a "x$ac_cv_header_dmedia_audio_h" = "xyes"; then
   AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <dmedia/audio.h>
#ifdef AL_SAMPLE_16
#ifdef AL_RATE
QF_maGiC_VALUE
#endif
#endif
	], SNDTYPE="SGI" SOUND_LIBS="-laudio")
fi

dnl Sun
if test -z "$SNDTYPE" -a "x$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
	], SNDTYPE="SUN")
fi

dnl Win32
if test -z "$SNDTYPE" -a "x$ac_cv_header_windows_h" = "xyes" -a \
	"x$ac_cv_header_dsound_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
    ], SNDTYPE="WIN32"
       SOUND_LIBS="-lwinmm")
fi

if test "$SNDTYPE"; then
	AC_MSG_RESULT([yes ($SNDTYPE)])
else
	AC_MSG_RESULT([no, using null sound driver])
fi
AC_SUBST(SOUND_LIBS)
AC_SUBST(SOUND_CFLAGS)

AM_CONDITIONAL(SNDTYPE_ALSA_0_5, test "$SNDTYPE" = "ALSA_0_5")
AM_CONDITIONAL(SNDTYPE_ALSA_0_9, test "$SNDTYPE" = "ALSA_0_9")
AM_CONDITIONAL(SNDTYPE_MME, test "$SNDTYPE" = "MME")
AM_CONDITIONAL(SNDTYPE_OSS, test "$SNDTYPE" = "OSS")
AM_CONDITIONAL(SNDTYPE_SDL, test "$SNDTYPE" = "SDL")
AM_CONDITIONAL(SNDTYPE_SGI, test "$SNDTYPE" = "SGI")
AM_CONDITIONAL(SNDTYPE_SUN, test "$SNDTYPE" = "SUN")
AM_CONDITIONAL(SNDTYPE_WIN32, test "$SNDTYPE" = "WIN32")
AM_CONDITIONAL(SNDTYPE_NULL, test "$SNDTYPE" != "ALSA_0_5" -a "$SNDTYPE" != "ALSA_0_9" -a "$SNDTYPE" != "MME" -a "$SNDTYPE" != "OSS" -a "$SNDTYPE" != "SDL" -a "$SNDTYPE" != "SGI" -a "$SNDTYPE" != "SUN" -a "$SNDTYPE" != "WIN32")

dnl Tests for joystick support
AC_MSG_CHECKING(for joystick support)
if test -z "$JOYTYPE" -a "x$ac_cv_header_linux_joystick_h" = "xyes"; then
	AC_EGREP_CPP([QF_maGiC_VALUE],[
#include <linux/joystick.h>
#ifdef JS_VERSION
QF_maGiC_VALUE
#endif
	], JOYTYPE="Linux")
fi

if test -z "$JOYTYPE" -a "x$ac_cv_header_dinput_h" = "xyes"; then
	JOYTYPE="Win32"
fi

if test "$JOYTYPE"; then
	AC_MSG_RESULT([yes ($JOYTYPE)])
else
	AC_MSG_RESULT([no, using null joystick driver])
fi
AC_SUBST(JOY_LIBS)
AC_SUBST(JOY_CFLAGS)
AM_CONDITIONAL(JOYTYPE_LINUX, test "$JOYTYPE" = "Linux")
AM_CONDITIONAL(JOYTYPE_WIN32, test "$JOYTYPE" = "Win32")
AM_CONDITIONAL(JOYTYPE_NULL, test "$JOYTYPE" != "Linux" -a "$JOYTYPE" != "Win32")

dnl ==================================================================
dnl Checks for CD-ROM
dnl ==================================================================

CD_LIBS=""
CD_CFLAGS=""

AC_MSG_CHECKING(for CD audio support)

dnl SDL CD audio
AC_ARG_ENABLE(sdl-cd-audio,
[  --enable-sdl-cd-audio   use SDL for CD audio output],
	if test -z "$CDTYPE" -a "x$HAVE_SDL" = "xyes"; then
		AC_MSG_RESULT([yes (SDL)])
		CDTYPE=SDL
		CD_LIBS="$SDL_LIBS"
	fi
)

dnl Linux
if test -z "$CDTYPE"; then
	AC_EGREP_CPP([QF_maGiC_VALUE],
		[
#include <linux/cdrom.h>
#ifdef CDROMREADTOCENTRY
QF_maGiC_VALUE
#endif
		],
		AC_MSG_RESULT([yes (Linux)])
		CDTYPE=LINUX
	)
fi

dnl SGI
if test -z "$CDTYPE"; then
	AC_EGREP_CPP([QF_maGiC_VALUE],
		[
#include <dmedia/cdaudio.h>
#ifdef CD_READY
QF_maGiC_VALUE
#endif
		],
		AC_MSG_RESULT([yes (SGI)])
		CDTYPE=SGI
		CD_LIBS="-lcdaudio -lmediad -lds"
	)
fi
if test -z "$CDTYPE"; then
	AC_EGREP_CPP([QF_maGiC_VALUE],
		[
#include <windows.h>
#include <mmsystem.h>
#if defined(MCI_SET_DOOR_OPEN)
QF_maGiC_VALUE
#endif
		],
		AC_MSG_RESULT([yes (Win32)])
	    CDTYPE=WIN32
	)
fi

test -z "$CDTYPE" && AC_MSG_RESULT([no, using null CD audio driver])
AC_SUBST(CD_LIBS)
AC_SUBST(CD_CFLAGS)

AM_CONDITIONAL(CDTYPE_LINUX, test "$CDTYPE" = "LINUX")
AM_CONDITIONAL(CDTYPE_SDL, test "$CDTYPE" = "SDL")
AM_CONDITIONAL(CDTYPE_SGI, test "$CDTYPE" = "SGI")
AM_CONDITIONAL(CDTYPE_WIN32, test "$CDTYPE" = "WIN32")
AM_CONDITIONAL(CDTYPE_NULL, test "$CDTYPE" != "LINUX" -a "$CDTYPE" != "SDL" -a "$CDTYPE" != "SGI" -a "$CDTYPE" != "WIN32")

dnl ==================================================================
dnl Checks for networking
dnl ==================================================================

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
AC_SUBST(NET_LIBS)


dnl ==================================================================
dnl Misc checks
dnl ==================================================================

dnl Set $prefix and $exec_prefix to $ac_default_prefix if they are not set
test "x$prefix" = xNONE && prefix=$ac_default_prefix
test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'

if test "x$SYSTYPE" = xWIN32; then
	default_globalconf="~/${PACKAGE}.conf"
	default_userconf="~/${PACKAGE}rc"
	default_sharepath="."
	default_userpath="."
else
	default_globalconf="/etc/${PACKAGE}.conf"
	default_userconf="~/.${PACKAGE}rc"
	eval foo="$datadir"
	default_sharepath="$foo/games/$PACKAGE"
	default_userpath="~/.$PACKAGE"
fi

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
                          /etc/quakeforge.conf.],
globalconf="$withval", globalconf="auto")
if test "x$globalconf" = "xauto" || test "x$globalconf" = "xyes" || \
	test "x$globalconf" = "xno"; then  dnl yes/no sanity checks
	globalconf="$default_globalconf"
fi
AC_DEFINE_UNQUOTED(FS_GLOBALCFG, "$globalconf", [Define this to the location of the global config file])

AC_ARG_WITH(user-cfg,
[  --with-user-cfg=FILE    If set will change the name and location of the
                          (read-only) user config file. Defaults to
                          ~/.quakeforgerc],
userconf="$withval", userconf="auto")
if test "x$userconf" = "xauto" || test "x$userconf" = "xyes" || \
	test "x$userconf" = "xno"; then  dnl yes/no sanity checks
	userconf="$default_userconf"
fi
AC_DEFINE_UNQUOTED(FS_USERCFG, "$userconf", [Define this to the location of the user config file])

AC_ARG_WITH(sharepath,
[  --with-sharepath=DIR    Use DIR for shared game data, defaults to
                          '.' or \${datadir}/games/quakeforge (if new style)],
sharepath=$withval, sharepath="auto")
if test "x$sharepath" = "xauto" -o "x$sharepath" = "xyes" -o "x$sharepath" = "x"; then
	sharepath="$default_sharepath"
elif test "x$sharepath" = xno; then
	sharepath="."
fi
AC_DEFINE_UNQUOTED(FS_SHAREPATH, "$sharepath", [Define this to the shared game directory root])

AC_ARG_WITH(userpath,
[  --with-userpath=DIR     Use DIR for unshared game data, defaults to
                          '.' or ~/.quakeforge (if new style)],
userpath=$withval, userpath="auto")
if test "x$userpath" = "xauto" -o "x$userpath" = "xyes" -o "x$userpath" = "x"; then
	userpath="$default_userpath"
elif test "x$userpath" = xno; then
	userpath="."
fi
AC_DEFINE_UNQUOTED(FS_USERPATH, "$userpath", [Define this to the unshared game directory root])

dnl CFLAGS for release and devel versions
CFLAGS=""
AC_ARG_ENABLE(debug,
	[  --enable-debug          compile with debugging (for development)],
	debug=$enable_debug
)

AC_MSG_CHECKING(for debugging)
if test "x$debug" = xyes; then
	AC_MSG_RESULT(yes)
	BUILD_TYPE="$BUILD_TYPE Debug"
	CFLAGS="$CFLAGS -g"
else
	AC_MSG_RESULT(no)
fi

AC_ARG_ENABLE(packetlog,
	[  --enable-packetlog	   compile with packet logger (for development)],
	packetlog=$enable_packetlog
)

AC_ARG_ENABLE(optimize,
	[  --disable-optimize      compile without optimizations (for development)],
	optimize=$disable_optimize,
	optimize=yes
)

AC_ARG_WITH(amd,
	[  --with-amd              Optimize for AMD processors instead of Intel],
	HAVE_AMD="yes",
	HAVE_AMD="no"
)
AC_MSG_CHECKING(for optimization)
if test "x$optimize" = xyes; then
	AC_MSG_RESULT(yes)
	BUILD_TYPE="$BUILD_TYPE Optimize"
	if test "x$GCC" = xyes; then
		CFLAGS="$CFLAGS -O3 -ffast-math -funroll-loops -fomit-frame-pointer -fexpensive-optimizations"
		AC_MSG_CHECKING(for special compiler settings)
		case "${host_cpu}" in
			i?86)
				if test "x$HAVE_AMD" = "xyes"; then
					MORE_CFLAGS="-march=k6"
				else
					MORE_CFLAGS="-march=${host_cpu}"
				fi
				;;
			*)
				MORE_CFLAGS=""
				;;
		esac
		if test "x$MORE_CFLAGS" = x; then
			AC_MSG_RESULT(no)
		else
			AC_MSG_RESULT(yes)
			CFLAGS="$CFLAGS $MORE_CFLAGS"
		fi
	else
		CFLAGS=-O2
	fi
else
	AC_MSG_RESULT(no)
	CFLAGS="$CFLAGS -O"
fi

AC_MSG_CHECKING(for packet logging)
if test "x$packetlog" = xyes; then
	AC_MSG_RESULT(yes)
	AC_DEFINE(PACKET_LOGGING, 1, [Define this if you want packet logging])
else
	AC_MSG_RESULT(no)
fi

AM_CONDITIONAL(PACKETLOG, test "x$packetlog" = "xyes")

dnl CFLAGS for release and devel versions
AC_ARG_ENABLE(profile,
	[  --enable-profile        compile with profiling (for development)],
	profile=$enable_profile
)
if test "x$profile" = xyes; then
	BUILD_TYPE="$BUILD_TYPE Profile"
	if test "x$GCC" = xyes; then
		CFLAGS="`echo $CFLAGS | sed -e 's/-fomit-frame-pointer//g'` -pg"
		LDFLAGS="$LDFLAGS -pg"
	else
		CFLAGS="$CFLAGS -p"
	fi
fi

dnl Some GCCs can't deal with our current code -- we're working on it, but
dnl this fixes it up for now
if test "x$GCC" = xyes; then
	AC_MSG_CHECKING(whether -fno-strict-aliasing works)
	saved_CFLAGS="$CFLAGS"
	CFLAGS="$CFLAGS -fno-strict-aliasing"
	AC_TRY_COMPILE(
		[],
		[],
		AC_MSG_RESULT(yes),
		AC_MSG_RESULT(no)
		CFLAGS="$saved_CFLAGS"
	)
fi

check_pipe=no
if test "x$GCC" = xyes; then
	dnl Check for -pipe vs -save-temps.
	AC_MSG_CHECKING(for -pipe vs -save-temps)
	AC_ARG_ENABLE(save-temps,
		[  --enable-save-temps     save temporary files],
		AC_MSG_RESULT(-save-temps); CFLAGS="$CFLAGS -save-temps"; BUILD_TYPE="$BUILD_TYPE Save-temps",
		AC_MSG_RESULT(-pipe); check_pipe=yes)
fi
if test "x$check_pipe" = xyes; then
	AC_MSG_CHECKING(whether -pipe works)
	save_CFLAGS="$CFLAGS"
	CFLAGS="$CFLAGS -pipe"
	AC_TRY_COMPILE(
		[],
		[],
		AC_MSG_RESULT(yes),
		AC_MSG_RESULT(no)
		CFLAGS="$save_CFLAGS"
	)
fi

dnl QuakeForge uses lots of BCPL-style (//) comments, which can cause problems
dnl with many compilers that don't support the latest ISO standards. Well,
dnl that is our cover story -- the reality is that we like them and don't want
dnl to give them up. :)
dnl Make the compiler swallow its pride...
if test "x$GCC" != xyes; then
   AC_MSG_CHECKING(for how to deal with BCPL-style comments)
   case "${host}" 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...except when this is a release
if test "x$GCC" = xyes; then
	CFLAGS="$CFLAGS -Wall"
	if test -d $srcdir/CVS; then
		CFLAGS="$CFLAGS -Werror"
	fi
fi

AS="$CC"
ASFLAGS="\$(DEFS) \$(DEFAULT_INCLUDES) \$(INCLUDES)"
CCASFLAGS="$ASFLAGS"
CCAS="$AS"
AC_SUBST(AS)
AC_SUBST(ASFLAGS)
AC_SUBST(CCAS)
AC_SUBST(CCASFLAGS)

dnl ==================================================================
dnl Make sure we link against a working zlib
dnl ==================================================================

AC_MSG_CHECKING(for libz.a in X11)
need_abs_libz=no
for d in `echo $X_LIBS | sed -e 's/-L//'`; do
	if test -f $d/libz.a; then
		need_abs_libz=yes
		break
	fi
done
AC_MSG_RESULT($need_abs_libz)

AC_ARG_WITH(libz,
[  --with-libz=<path list> specify directories to search for zlib],
zlib_paths="$withval", zlib_paths="")
if test "x$need_abs_libz" = "xyes"; then
	AC_MSG_CHECKING(for location of libz.a or libz.so)
	zlib_location="unknown"
	for d in $zlib_paths /usr/local/lib /usr/lib /lib; do
		for f in libz.so libz.a; do
			if test -f $d/$f; then
			zlib_location=$d/$f
			break
		fi
		done
	done
	AC_MSG_RESULT($zlib_location)
	if test "$zlib_location" = unknown; then
		echo need to specify zlib location with --with-libz
		exit 1
	fi
	Z_LIBS="$zlib_location"
fi
AC_SUBST(Z_LIBS)

dnl ==================================================================
dnl Find out what to build and finish
dnl ==================================================================

AC_ARG_WITH(clients,
	[  --with-clients=<list>   compile clients in <list>;
                          3dfx,fbdev,ggi,glx,mgl,sdl,sgl,svga,x11],
	clients="$withval",
	clients="all"
)
if test "$clients" = "all"; then
	ENABLE_3DFX=yes
	ENABLE_FBDEV=yes
	ENABLE_GGI=yes
	ENABLE_GLX=yes
	ENABLE_MGL=yes
	ENABLE_SDL=yes
	ENABLE_SGL=yes
	ENABLE_SVGA=yes
	ENABLE_WGL=yes
	ENABLE_X11=yes
else
	ENABLE_3DFX=no
	ENABLE_FBDEV=no
	ENABLE_GGI=no
	ENABLE_GLX=no
	ENABLE_MGL=no
	ENABLE_SDL=no
	ENABLE_SGL=no
	ENABLE_SVGA=no
	ENABLE_WGL=no
	ENABLE_X11=no
	IFS=","
	for client in $clients; do
		case "$client" in
			3dfx)
				ENABLE_3DFX=yes
				;;
			fbdev)
				ENABLE_FBDEV=yes
				;;
			ggi)
				ENABLE_GGI=yes
				;;
			glx)
				ENABLE_GLX=yes
				;;
			mgl)
				ENABLE_MGL=yes
				;;
			sdl)
				ENABLE_SDL=yes
				;;
			sgl)
				ENABLE_SGL=yes
				;;
			svga)
				ENABLE_SVGA=yes
				;;
			wgl)
				ENABLE_WGL=yes
				;;
			x11)
				ENABLE_X11=yes
				;;
		esac
	done
	IFS=" "
fi

AC_ARG_WITH(server,
	[  --with-server           compile dedicated server],
	SV_TARGETS="$withval", SV_TARGETS=yes
)

CL_TARGETS=""
TARGETS=""
if test "x$HAVE_TDFXGL" = xyes -a "x$ENABLE_3DFX" = xyes; then
	TARGETS="$TARGETS qf-client-3dfx\$(EXEEXT)"
	CL_TARGETS="$CL_TARGETS 3dfx"
fi
if test "x$HAVE_FBDEV" = xyes -a "x$ENABLE_FBDEV" = xyes; then
	TARGETS="$TARGETS qf-client-fbdev\$(EXEEXT)"
	CL_TARGETS="$CL_TARGETS FBDEV"
fi
if test "x$HAVE_GGI" = xyes -a "x$ENABLE_GGI" = xyes; then
	TARGETS="$TARGETS qf-client-ggi\$(EXEEXT)"
	CL_TARGETS="$CL_TARGETS GGI"
fi
if test "x$HAVE_X" = xyes; then
	if test "x$HAVE_GLX" = xyes -a "x$ENABLE_GLX" = xyes; then
		TARGETS="$TARGETS qf-client-glx\$(EXEEXT)"
		CL_TARGETS="$CL_TARGETS GLX"
	fi
fi
if test "x$HAVE_MGL" = xyes -a "x$ENABLE_MGL" = xyes; then
	TARGETS="$TARGETS qf-client-mgl\$(EXEEXT)"
	CL_TARGETS="$CL_TARGETS MGL"
fi
if test "x$HAVE_SDL" = xyes -a "x$ENABLE_SDL" = xyes; then
	TARGETS="$TARGETS qf-client-sdl\$(EXEEXT)"
	CL_TARGETS="$CL_TARGETS SDL"
fi
if test "x$HAVE_SGL" = xyes; then
	if test "x$HAVE_GLX" = xyes -a "x$ENABLE_SGL" = xyes; then
		TARGETS="$TARGETS qf-client-sgl\$(EXEEXT)"
		CL_TARGETS="$CL_TARGETS SDL-GL"
	fi
fi
if test "x$HAVE_SVGA" = xyes -a "x$ENABLE_SVGA" = xyes; then
	TARGETS="$TARGETS qf-client-svga\$(EXEEXT)"
	CL_TARGETS="$CL_TARGETS SVGAlib"
fi
if test "x$mingw" = xyes; then
	if test "x$ENABLE_WGL" = xyes; then
		TARGETS="$TARGETS qf-client-wgl\$(EXEEXT)"
		CL_TARGETS="$CL_TARGETS WGL"
	fi
fi
if test "x$HAVE_X" = xyes -a "x$ENABLE_X11" = xyes; then
	TARGETS="$TARGETS qf-client-x11\$(EXEEXT)"
	CL_TARGETS="$CL_TARGETS X11"
fi
if test "x$SV_TARGETS" = xyes; then
	TARGETS="qf-server\$(EXEEXT) $TARGETS"
fi
AC_SUBST(TARGETS)

dnl Output files
AC_OUTPUT(
	RPM/quakeforge.spec
	RPM/build_rpm
	debian/Makefile
	doc/Makefile
	doc/texinfo/Makefile
	doc/man/Makefile
	include/Makefile
	include/win32/version.h
	source/Makefile
	Makefile
	quakeforge.lsm,
	chmod +x RPM/build_rpm
)

AC_MSG_RESULT([
	QuakeForge has been configured successfully.

	Build type:$BUILD_TYPE
	Server support: $SV_TARGETS
	Client support:$CL_TARGETS
	Sound system: $SNDTYPE
	IPv6 networking: $NETTYPE_IPV6
	Compression support: $HAVE_ZLIB

	Shared game data directory: $sharepath
	Per-user game data directory: $userpath
	Global configuration file: $globalconf
	User configuration file: $userconf
])
if test -d $srcdir/CVS; then
	echo "WARNING: Hackers at work, watch for falling bits of code."
	echo "(This is from a development CVS tree. Expect problems)"
	echo
fi