libtdevnc/configure.ac

# Process this file with autoconf to produce a configure script.
AC_INIT(LibVNCServer, 0.9, http://sourceforge.net/projects/libvncserver)
AM_INIT_AUTOMAKE(LibVNCServer, 0.9)
AM_CONFIG_HEADER(rfbconfig.h)
AX_PREFIX_CONFIG_H([rfb/rfbconfig.h])

# Checks for programs.
AC_PROG_CC
if test -z "$CC"; then
	CCLD="\$(CC)"
else
	CCLD="$CC"
fi
AC_PROG_MAKE_SET
AC_PROG_LIBTOOL
AC_PATH_PROG([AR], [ar], [/usr/bin/ar],
                  [$PATH:/usr/ccs/bin])

# Options
AH_TEMPLATE(WITH_TIGHTVNC_FILETRANSFER, [Disable TightVNCFileTransfer protocol])
AC_ARG_WITH(tightvnc-filetransfer,
	[  --without-filetransfer  disable TightVNC file transfer protocol],
	, [ with_tightvnc_filetransfer=yes ])
# AC_DEFINE moved to after libpthread check.

AH_TEMPLATE(ALLOW24BPP, [Enable 24 bit per pixel in native framebuffer])
AC_ARG_WITH(24bpp,
	[  --without-24bpp         disable 24 bpp framebuffers],
	, [ with_24bpp=yes ])
if test "x$with_24bpp" = "xyes"; then
	AC_DEFINE(ALLOW24BPP)
fi
AH_TEMPLATE(FFMPEG, [Use ffmpeg (for vnc2mpg)])
AC_ARG_WITH(ffmpeg,
	[  --with-ffmpeg=dir       set ffmpeg home directory],,)
AC_SUBST(with_ffmpeg)
AM_CONDITIONAL(WITH_FFMPEG, test ! -z "$with_ffmpeg")
if test ! -z "$with_ffmpeg"; then
	AC_CHECK_LIB(mp3lame, lame_init, HAVE_MP3LAME="true", HAVE_MP3LAME="false" )
fi
AM_CONDITIONAL(HAVE_MP3LAME, test "$HAVE_MP3LAME" = "true")

# Seem to need this dummy here to induce the 'checking for egrep... grep -E', etc.
# before it seemed to be inside the with_jpeg conditional. 
AC_CHECK_HEADER(thenonexistentheader.h, HAVE_THENONEXISTENTHEADER_H="true")

# Checks for X libraries
HAVE_X="false"
AC_PATH_XTRA
AH_TEMPLATE(HAVE_X11, [X11 build environment present])

# See if we are to build x11vnc:
AH_TEMPLATE(HAVE_SYSTEM_LIBVNCSERVER, [Use the system libvncserver build environment for x11vnc.])
AC_ARG_WITH(system-libvncserver,
[  --with-system-libvncserver     use installed libvncserver for x11vnc]
[  --with-system-libvncserver=DIR use libvncserver installed in DIR for x11vnc],,)
AC_ARG_WITH(x11vnc,
[  --with-x11vnc           configure for building the x11vnc subdir (if present)]
[                          you will need to cd to x11vnc and run 'make' etc.],,)

if test ! -z "$with_x11vnc" -a "$with_x11vnc" = "yes"; then
	build_x11vnc="yes"
elif test "$PACKAGE_NAME" = "x11vnc"; then
	build_x11vnc="yes"
else
	build_x11vnc="no"
fi
	
# x11vnc only:
if test "$build_x11vnc" = "yes"; then

AH_TEMPLATE(HAVE_XSHM, [MIT-SHM extension build environment present])
AH_TEMPLATE(HAVE_XTEST, [XTEST extension build environment present])
AH_TEMPLATE(HAVE_XTESTGRABCONTROL, [XTEST extension has XTestGrabControl])
AH_TEMPLATE(HAVE_XKEYBOARD, [XKEYBOARD extension build environment present])
AH_TEMPLATE(HAVE_LIBXINERAMA, [XINERAMA extension build environment present])
AH_TEMPLATE(HAVE_LIBXRANDR, [XRANDR extension build environment present])
AH_TEMPLATE(HAVE_LIBXFIXES, [XFIXES extension build environment present])
AH_TEMPLATE(HAVE_LIBXDAMAGE, [XDAMAGE extension build environment present])
AH_TEMPLATE(HAVE_LIBXTRAP, [DEC-XTRAP extension build environment present])
AH_TEMPLATE(HAVE_RECORD, [RECORD extension build environment present])
AH_TEMPLATE(HAVE_SOLARIS_XREADSCREEN, [Solaris XReadScreen available])
AH_TEMPLATE(HAVE_IRIX_XREADDISPLAY, [IRIX XReadDisplay available])
AH_TEMPLATE(HAVE_FBPM, [FBPM extension build environment present])
AH_TEMPLATE(HAVE_DPMS, [DPMS extension build environment present])
AH_TEMPLATE(HAVE_LINUX_VIDEODEV_H, [video4linux build environment present])
AH_TEMPLATE(HAVE_LINUX_FB_H, [linux fb device build environment present])
AH_TEMPLATE(HAVE_LINUX_INPUT_H, [linux/input.h present])
AH_TEMPLATE(HAVE_LINUX_UINPUT_H, [linux uinput device build environment present])
AH_TEMPLATE(HAVE_MACOSX_NATIVE_DISPLAY, [build MacOS X native display support])

AC_ARG_WITH(xkeyboard,
[  --without-xkeyboard     disable xkeyboard extension support],,)
AC_ARG_WITH(xinerama,
[  --without-xinerama      disable xinerama extension support],,)
AC_ARG_WITH(xrandr,
[  --without-xrandr        disable xrandr extension support],,)
AC_ARG_WITH(xfixes,
[  --without-xfixes        disable xfixes extension support],,)
AC_ARG_WITH(xdamage,
[  --without-xdamage       disable xdamage extension support],,)
AC_ARG_WITH(xtrap,
[  --without-xtrap         disable xtrap extension support],,)
AC_ARG_WITH(xrecord,
[  --without-xrecord       disable xrecord extension support],,)
AC_ARG_WITH(fbpm,
[  --without-fbpm          disable fbpm extension support],,)
AC_ARG_WITH(dpms,
[  --without-dpms          disable dpms extension support],,)
AC_ARG_WITH(v4l,
[  --without-v4l           disable video4linux support],,)
AC_ARG_WITH(fbdev,
[  --without-fbdev         disable linux fb device support],,)
AC_ARG_WITH(uinput,
[  --without-uinput        disable linux uinput device support],,)
AC_ARG_WITH(macosx-native,
[  --without-macosx-native disable MacOS X native display support],,)

fi
# end x11vnc only.

if test "x$with_x" = "xno"; then
	HAVE_X="false"
elif test "$X_CFLAGS" != "-DX_DISPLAY_MISSING"; then
	AC_CHECK_LIB(X11, XGetImage, [AC_DEFINE(HAVE_X11) HAVE_X="true"],
		HAVE_X="false",
		$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)

	# x11vnc only:
	if test $HAVE_X = "true" -a "$build_x11vnc" = "yes"; then
		X_PRELIBS="$X_PRELIBS -lXext"

		AC_CHECK_LIB(Xext, XShmGetImage, 
			[AC_DEFINE(HAVE_XSHM)], ,
			$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)

		AC_CHECK_LIB(Xext, XReadScreen, 
			[AC_DEFINE(HAVE_SOLARIS_XREADSCREEN)], ,
			$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)

		AC_CHECK_HEADER(X11/extensions/readdisplay.h,
			[AC_DEFINE(HAVE_IRIX_XREADDISPLAY)], ,
			[#include <X11/Xlib.h>])

		if test "x$with_fbpm" != "xno"; then
			AC_CHECK_LIB(Xext, FBPMForceLevel, 
				[AC_DEFINE(HAVE_FBPM)], ,
				$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
		fi

		if test "x$with_dpms" != "xno"; then
			AC_CHECK_LIB(Xext, DPMSForceLevel, 
				[AC_DEFINE(HAVE_DPMS)], ,
				$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
		fi

		AC_CHECK_LIB(Xtst, XTestGrabControl, 
			X_PRELIBS="-lXtst $X_PRELIBS"
			[AC_DEFINE(HAVE_XTESTGRABCONTROL) HAVE_XTESTGRABCONTROL="true"], ,
			$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)

		AC_CHECK_LIB(Xtst, XTestFakeKeyEvent, 
			X_PRELIBS="-lXtst $X_PRELIBS"
			[AC_DEFINE(HAVE_XTEST) HAVE_XTEST="true"], ,
			$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)

		if test "x$with_xrecord" != "xno"; then
			AC_CHECK_LIB(Xtst, XRecordEnableContextAsync, 
				X_PRELIBS="-lXtst $X_PRELIBS"
				[AC_DEFINE(HAVE_RECORD)], ,
				$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
		fi

		# we use XTRAP on X11R5, or user can set X11VNC_USE_XTRAP
		if test "x$with_xtrap" != "xno"; then
		    if test ! -z "$X11VNC_USE_XTRAP" -o -z "$HAVE_XTESTGRABCONTROL"; then
			AC_CHECK_LIB(XTrap, XETrapSetGrabServer, 
				X_PRELIBS="$X_PRELIBS -lXTrap"
				[AC_DEFINE(HAVE_LIBXTRAP)], ,
				$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
			# tru64 uses libXETrap.so
			AC_CHECK_LIB(XETrap, XETrapSetGrabServer, 
				X_PRELIBS="$X_PRELIBS -lXETrap"
				[AC_DEFINE(HAVE_LIBXTRAP)], ,
				$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
		    fi
		fi

		if test "x$with_xkeyboard" != "xno"; then
			saved_CPPFLAGS="$CPPFLAGS"
			CPPFLAGS="$CPPFLAGS $X_CFLAGS"
			AC_CHECK_HEADER(X11/XKBlib.h, HAVE_XKBLIB_H="true",
				HAVE_XKBLIB_H="false", [#include <X11/Xlib.h>])
			CPPFLAGS="$saved_CPPFLAGS"
			if test $HAVE_XKBLIB_H = "true"; then
				AC_CHECK_LIB(X11, XkbSelectEvents,
					[AC_DEFINE(HAVE_XKEYBOARD)], ,
					$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
			fi
		fi

		if test "x$with_xinerama" != "xno"; then
			AC_CHECK_LIB(Xinerama, XineramaQueryScreens,
				X_PRELIBS="$X_PRELIBS -lXinerama"
				[AC_DEFINE(HAVE_LIBXINERAMA)], ,
				$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
		fi

		if test "x$with_xrandr" != "xno"; then
			AC_CHECK_LIB(Xrandr, XRRSelectInput,
				X_PRELIBS="$X_PRELIBS -lXrandr"
				[AC_DEFINE(HAVE_LIBXRANDR)], ,
				$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
		fi

		if test "x$with_xfixes" != "xno"; then
			AC_CHECK_LIB(Xfixes, XFixesGetCursorImage,
				X_PRELIBS="$X_PRELIBS -lXfixes"
				[AC_DEFINE(HAVE_LIBXFIXES) HAVE_LIBXFIXES="true"], ,
				$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
		fi

		if test "x$with_xdamage" != "xno"; then
			AC_CHECK_LIB(Xdamage, XDamageQueryExtension,
				X_PRELIBS="$X_PRELIBS -lXdamage"
				[AC_DEFINE(HAVE_LIBXDAMAGE) HAVE_LIBXDAMAGE="true"], ,
				$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
		fi

		if test ! -z "$HAVE_LIBXFIXES" -o ! -z "$HAVE_LIBXDAMAGE"; then
			# need /usr/sfw/lib in RPATH for Solaris 10 and later
			case `(uname -sr) 2>/dev/null` in
			"SunOS 5"*) X_EXTRA_LIBS="$X_EXTRA_LIBS -R/usr/sfw/lib" ;;
			esac
		fi

		X_LIBS="$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS"
	fi
	# end x11vnc only.
fi

AC_SUBST(X_LIBS)
AM_CONDITIONAL(HAVE_X, test $HAVE_X != "false")

# x11vnc only:
if test "$build_x11vnc" = "yes"; then

if test "x$HAVE_X" = "xfalse" -a "x$with_x" != "xno"; then
	AC_MSG_ERROR([
==========================================================================
A working X window system build environment is required to build x11vnc.
Make sure any required X development packages are installed.  If they are
installed in non-standard locations, one can use the --x-includes=DIR
and --x-libraries=DIR configure options or set the CPPFLAGS and LDFLAGS
environment variables to indicate where the X window system header files
and libraries may be found.  On 64+32 bit machines you may need to point
to lib64 or lib32 directories to pick up the correct word size.

If you want to build x11vnc without X support (e.g. for -rawfb use only
or for native Mac OS X), specify the --without-x configure option.
==========================================================================
])
fi

if test "x$HAVE_X" = "xtrue" -a "x$HAVE_XTEST" != "xtrue"; then
	AC_MSG_WARN([
==========================================================================
A working build environment for the XTEST extension was not found (libXtst).
An x11vnc built this way will be only barely usable.  You will be able to
move the mouse but not click or type.  There can also be deadlocks if an
application grabs the X server.

It is recommended that you install the necessary development packages
for XTEST (perhaps it is named something like libxtst-dev) and run
configure again.
==========================================================================
])
fi

AH_TEMPLATE(HAVE_LIBCRYPT, [libcrypt library present])
AC_ARG_WITH(crypt,
[  --without-crypt         disable support for libcrypt],,)
if test "x$with_crypt" != "xno"; then
	AC_CHECK_FUNCS([crypt], HAVE_LIBC_CRYPT="true")
	if test -z "$HAVE_LIBC_CRYPT"; then
		AC_CHECK_LIB(crypt, crypt,
			CRYPT_LIBS="-lcrypt"
			[AC_DEFINE(HAVE_LIBCRYPT)], ,)
	fi
fi
AC_SUBST(CRYPT_LIBS)

# some OS's need both -lssl and -lcrypto on link line:
AH_TEMPLATE(HAVE_LIBCRYPTO, [openssl libcrypto library present])
AC_ARG_WITH(crypto,
[  --without-crypto        disable support for openssl libcrypto],,)

AH_TEMPLATE(HAVE_LIBSSL, [openssl libssl library present])
AC_ARG_WITH(ssl,
[  --without-ssl           disable support for openssl libssl],,)

if test "x$with_crypto" != "xno" -a "x$with_ssl" != "xno"; then
	AC_CHECK_LIB(crypto, RAND_file_name,
		[AC_DEFINE(HAVE_LIBCRYPTO) HAVE_LIBCRYPTO="true"], ,)
fi

if test "x$with_ssl" != "xno"; then
	if test "x$HAVE_LIBCRYPTO" = "xtrue"; then
		AC_CHECK_LIB(ssl, SSL_library_init,
			SSL_LIBS="-lssl -lcrypto"
			[AC_DEFINE(HAVE_LIBSSL) HAVE_LIBSSL="true"], ,
			-lcrypto)
	else
		AC_CHECK_LIB(ssl, SSL_library_init,
			SSL_LIBS="-lssl"
			[AC_DEFINE(HAVE_LIBSSL) HAVE_LIBSSL="true"], ,)
	fi
fi
AC_SUBST(SSL_LIBS)

	if test "x$HAVE_LIBSSL" != "xtrue"; then
		AC_MSG_WARN([
==========================================================================
The openssl encryption library libssl.so was not found.  An x11vnc built
this way will not support SSL encryption.  To enable SSL install the
necessary development packages (perhaps it is named something like
libssl-dev) and run configure again.
==========================================================================
])
	fi

if test "x$with_v4l" != "xno"; then
	AC_CHECK_HEADER(linux/videodev.h,
		[AC_DEFINE(HAVE_LINUX_VIDEODEV_H)],,)
fi
if test "x$with_fbdev" != "xno"; then
	AC_CHECK_HEADER(linux/fb.h,
		[AC_DEFINE(HAVE_LINUX_FB_H)],,)
fi
if test "x$with_uinput" != "xno"; then
	AC_CHECK_HEADER(linux/input.h,
		[AC_DEFINE(HAVE_LINUX_INPUT_H) HAVE_LINUX_INPUT_H="true"],,)
	if test "x$HAVE_LINUX_INPUT_H" = "xtrue"; then
		AC_CHECK_HEADER(linux/uinput.h,
			[AC_DEFINE(HAVE_LINUX_UINPUT_H)],, [#include <linux/input.h>])
	fi
fi

if test "x$with_macosx_native" != "xno"; then
	AC_DEFINE(HAVE_MACOSX_NATIVE_DISPLAY)
fi

AH_TEMPLATE(HAVE_AVAHI, [Avahi/mDNS client build environment present])
AC_ARG_WITH(avahi,
[  --without-avahi         disable support for Avahi/mDNS]
[  --with-avahi=DIR        use avahi include/library files in DIR],,)
if test "x$with_avahi" != "xno"; then
	printf "checking for avahi... "
	if test ! -z "$with_avahi" -a "x$with_avahi" != "xyes"; then
		AVAHI_CFLAGS="-I$with_avahi/include"
		AVAHI_LIBS="-L$with_avahi/lib -lavahi-common -lavahi-client"
		echo "using $with_avahi"
		with_avahi=yes
	elif pkg-config --atleast-version=0.6.4 avahi-client >/dev/null 2>&1; then
		AVAHI_CFLAGS=`pkg-config --cflags avahi-client`
		AVAHI_LIBS=`pkg-config --libs avahi-client`
		with_avahi=yes
		echo yes
	else
		with_avahi=no
		echo no
	fi
fi
if test "x$with_avahi" = "xyes"; then
	AC_DEFINE(HAVE_AVAHI)
	AC_SUBST(AVAHI_CFLAGS)
	AC_SUBST(AVAHI_LIBS)
fi

fi
# end x11vnc only.

# Checks for libraries.

uname_s=`(uname -s) 2>/dev/null`
ld_minus_R="yes"
if test "x$uname_s" = "xHP-UX"; then
	ld_minus_R="no"
elif test "x$uname_s" = "xOSF1"; then
	ld_minus_R="no"
elif test "x$uname_s" = "xDarwin"; then
	ld_minus_R="no"
fi

if test ! -z "$with_system_libvncserver" -a "x$with_system_libvncserver" != "xno"; then
	printf "checking for system libvncserver... "
	if test "x$with_system_libvncserver" != "xyes"; then
		rflag=""
		if test "x$ld_minus_R" = "xno"; then
			:
		elif test "x$GCC" = "xyes"; then
			rflag="-Xlinker -R$with_system_libvncserver/lib"
		else
			rflag="-R$with_system_libvncserver/lib"
		fi
		SYSTEM_LIBVNCSERVER_CFLAGS="-I$with_system_libvncserver/include"
		SYSTEM_LIBVNCSERVER_LIBS="-L$with_system_libvncserver/lib $rflag -lvncserver -lvncclient"
		echo "using $with_system_libvncserver"
		with_system_libvncserver=yes
	elif libvncserver-config --version >/dev/null 2>&1; then
		rflag=""
		rprefix=`libvncserver-config --prefix`
		if test "x$ld_minus_R" = "xno"; then
			:
		elif test "x$GCC" = "xyes"; then
			rflag=" -Xlinker -R$rprefix/lib "
		else
			rflag=" -R$rprefix/lib "
		fi
		SYSTEM_LIBVNCSERVER_CFLAGS=`libvncserver-config --cflags`
		SYSTEM_LIBVNCSERVER_LIBS="$rflag"`libvncserver-config --libs`
		with_system_libvncserver=yes
		echo yes
	else
		with_system_libvncserver=no
		echo no
	fi
fi

if test "x$with_system_libvncserver" = "xyes"; then
	AC_DEFINE(HAVE_SYSTEM_LIBVNCSERVER)
	AC_SUBST(SYSTEM_LIBVNCSERVER_CFLAGS)
	AC_SUBST(SYSTEM_LIBVNCSERVER_LIBS)
fi
AM_CONDITIONAL(HAVE_SYSTEM_LIBVNCSERVER, test "x$with_system_libvncserver" = "xyes")


AC_ARG_WITH(jpeg,
[  --without-jpeg          disable support for jpeg]
[  --with-jpeg=DIR         use jpeg include/library files in DIR],,)

# At this point:
#	no jpeg on command line   with_jpeg=""
#	-with-jpeg                with_jpeg="yes"
#	-without-jpeg             with_jpeg="no"
#	-with-jpeg=/foo/dir       with_jpeg="/foo/dir"

if test "x$with_jpeg" != "xno"; then
	if test ! -z "$with_jpeg" -a "x$with_jpeg" != "xyes"; then
		# add user supplied directory to flags:
		saved_CPPFLAGS="$CPPFLAGS"
		saved_LDFLAGS="$LDFLAGS"
		CPPFLAGS="$CPPFLAGS -I$with_jpeg/include"
		LDFLAGS="$LDFLAGS -L$with_jpeg/lib"
		if test "x$ld_minus_R" = "xno"; then
			:
		elif test "x$GCC" = "xyes"; then
			# this is not complete... in general a rat's nest.
			LDFLAGS="$LDFLAGS -Xlinker -R$with_jpeg/lib"
		else
			LDFLAGS="$LDFLAGS -R$with_jpeg/lib"
		fi
	fi
	AC_CHECK_HEADER(jpeglib.h, HAVE_JPEGLIB_H="true")
	if test "x$HAVE_JPEGLIB_H" = "xtrue"; then
		AC_CHECK_LIB(jpeg, jpeg_CreateCompress, , HAVE_JPEGLIB_H="")
	fi
	if test ! -z "$with_jpeg" -a "x$with_jpeg" != "xyes"; then
		if test "x$HAVE_JPEGLIB_H" != "xtrue"; then
			# restore old flags on failure:
			CPPFLAGS="$saved_CPPFLAGS"
			LDFLAGS="$saved_LDFLAGS"
		fi
	fi
	if test "$build" = "yes"; then
		if test "x$HAVE_JPEGLIB_H" != "xtrue"; then
			AC_MSG_WARN([
==========================================================================
The libjpeg compression library was not found: this may lead to reduced
performance, especially over slow links.  If libjpeg is in a non-standard
location use --with-jpeg=DIR to indicate the header file is in
DIR/include/jpeglib.h and the library in DIR/lib/libjpeg.a.  A copy of
libjpeg may be obtained from: ftp://ftp.uu.net/graphics/jpeg/
==========================================================================
])
		fi
	fi
fi

AC_ARG_WITH(libz,
[  --without-libz          disable support for deflate],,)
AC_ARG_WITH(zlib,
[  --without-zlib          disable support for deflate]
[  --with-zlib=DIR         use zlib include/library files in DIR],,)

if test "x$with_zlib" != "xno" -a "x$with_libz" != "xno"; then
	if test ! -z "$with_zlib" -a "x$with_zlib" != "xyes"; then
		saved_CPPFLAGS="$CPPFLAGS"
		saved_LDFLAGS="$LDFLAGS"
		CPPFLAGS="$CPPFLAGS -I$with_zlib/include"
		LDFLAGS="$LDFLAGS -L$with_zlib/lib"
		if test "x$ld_minus_R" = "xno"; then
			:
		elif test "x$GCC" = "xyes"; then
			LDFLAGS="$LDFLAGS -Xlinker -R$with_zlib/lib"
		else
			LDFLAGS="$LDFLAGS -R$with_zlib/lib"
		fi
	fi
	AC_CHECK_HEADER(zlib.h, HAVE_ZLIB_H="true")
	if test "x$HAVE_ZLIB_H" = "xtrue"; then
		AC_CHECK_LIB(z, deflate, , HAVE_ZLIB_H="")
	fi
	if test ! -z "$with_zlib" -a "x$with_zlib" != "xyes"; then
		if test "x$HAVE_ZLIB_H" != "xtrue"; then
			CPPFLAGS="$saved_CPPFLAGS"
			LDFLAGS="$saved_LDFLAGS"
		fi
	fi
	if test "$build_x11vnc" = "yes"; then
		if test "x$HAVE_ZLIB_H" != "xtrue"; then
			AC_MSG_WARN([
==========================================================================
The libz compression library was not found: this may lead to reduced
performance, especially over slow links.  If libz is in a non-standard
location use --with-zlib=DIR to indicate the header file is in
DIR/include/zlib.h and the library in DIR/lib/libz.a.  A copy of
libz may be obtained from: http://www.gzip.org/zlib/
==========================================================================
])
		fi
	fi
fi

AC_ARG_WITH(pthread,
[  --without-pthread       disable support for libpthread],,)

if test "x$with_pthread" != "xno"; then
	AC_CHECK_HEADER(pthread.h, HAVE_PTHREAD_H="true")
	if test ! -z "$HAVE_PTHREAD_H"; then
		AC_CHECK_LIB(pthread, pthread_mutex_lock)
		AC_CHECK_LIB(pthread, pthread_mutex_lock, HAVE_LIBPTHREAD="true")
	fi
fi
AM_CONDITIONAL(HAVE_LIBPTHREAD, test ! -z "$HAVE_LIBPTHREAD")

# tightvnc-filetransfer implemented using threads:
if test -z "$HAVE_LIBPTHREAD"; then
	with_tightvnc_filetransfer=""
fi
if test "x$with_tightvnc_filetransfer" = "xyes"; then
	AC_DEFINE(WITH_TIGHTVNC_FILETRANSFER)
fi
AM_CONDITIONAL(WITH_TIGHTVNC_FILETRANSFER, test "$with_tightvnc_filetransfer" = "yes")

AM_CONDITIONAL(HAVE_LIBZ, test ! -z "$HAVE_ZLIB_H")
AM_CONDITIONAL(HAVE_LIBJPEG, test ! -z "$HAVE_JPEGLIB_H")

if test -z "$with_sdl"; then
	if sdl-config --version >/dev/null 2>&1; then
		with_sdl=yes
		SDL_CFLAGS=`sdl-config --cflags`
		SDL_LIBS=`sdl-config --libs`
	else
		with_sdl=no
	fi
fi
AM_CONDITIONAL(HAVE_LIBSDL, test "x$with_sdl" = "xyes")
AC_SUBST(SDL_CFLAGS)
AC_SUBST(SDL_LIBS)

MINGW=`uname -s | grep MINGW 2>/dev/null`
AM_CONDITIONAL(MINGW, test ! -z "$MINGW" )
if test ! -z "$MINGW"; then
	WSOCKLIB="-lws2_32"
fi
AC_SUBST(WSOCKLIB)

# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([arpa/inet.h fcntl.h netdb.h netinet/in.h stdlib.h string.h sys/socket.h sys/time.h sys/timeb.h syslog.h unistd.h])

# x11vnc only:
if test "$build_x11vnc" = "yes"; then
	AC_CHECK_HEADERS([pwd.h sys/wait.h utmpx.h termios.h sys/ioctl.h sys/stropts.h])
fi

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_C_BIGENDIAN
AC_TYPE_SIZE_T
AC_HEADER_TIME
AC_HEADER_SYS_WAIT
AC_TYPE_SOCKLEN_T
if test ! -d ./rfb; then
	echo "creating subdir ./rfb for rfbint.h"
	mkdir ./rfb 
fi
AC_CREATE_STDINT_H(rfb/rfbint.h)
AC_CACHE_CHECK([for in_addr_t],
        inaddrt, [
                AC_TRY_COMPILE([#include <sys/types.h>
#include <netinet/in.h>],
                        [in_addr_t foo; return 0;],
                                        [inaddrt=yes],
                                        [inaddrt=no]),
        ])
AH_TEMPLATE(NEED_INADDR_T, [Need a typedef for in_addr_t])
if test $inaddrt = no ; then
  AC_DEFINE(NEED_INADDR_T)
fi

# Checks for library functions.
AC_FUNC_MEMCMP
AC_FUNC_STAT
AC_FUNC_STRFTIME
AC_FUNC_VPRINTF
AC_FUNC_FORK
AC_CHECK_LIB(nsl,gethostbyname)
AC_CHECK_LIB(socket,socket)

uname_s=`(uname -s) 2>/dev/null`
if test "x$uname_s" = "xHP-UX"; then
	# need -lsec for getspnam()
	LDFLAGS="$LDFLAGS -lsec"
fi

AC_CHECK_FUNCS([ftime gethostbyname gethostname gettimeofday inet_ntoa memmove memset mmap mkfifo select socket strchr strcspn strdup strerror strstr])
# x11vnc only:
if test "$build_x11vnc" = "yes"; then
	AC_CHECK_FUNCS([setsid setpgrp getpwuid getpwnam getspnam getuid geteuid setuid setgid seteuid setegid initgroups waitpid setutxent grantpt])
fi

# check, if shmget is in cygipc.a
AC_CHECK_LIB(cygipc,shmget)
AM_CONDITIONAL(CYGIPC, test "$HAVE_CYGIPC" = "true")

# Check if /dev/vcsa1 exists, if so, define LINUX
AM_CONDITIONAL(LINUX, test -c /dev/vcsa1)

# Check for OS X specific header
AC_CHECK_HEADER(ApplicationServices/ApplicationServices.h, HAVE_OSX="true")
AM_CONDITIONAL(OSX, test "$HAVE_OSX" = "true")

# On Solaris 2.7, write() returns ENOENT when it really means EAGAIN
AH_TEMPLATE(ENOENT_WORKAROUND, [work around when write() returns ENOENT but does not mean it])
case `(uname -sr) 2>/dev/null` in
    "SunOS 5.7")
	AC_DEFINE(ENOENT_WORKAROUND)
    ;;
esac

# Check for rpm SOURCES path
printf "checking for rpm sources path... "
RPMSOURCEDIR="NOT-FOUND"
for directory in packages OpenLinux redhat RedHat rpm RPM "" ; do
	if test -d /usr/src/${directory}/SOURCES; then
		RPMSOURCEDIR="/usr/src/${directory}/SOURCES/"
	fi
done
echo "$RPMSOURCEDIR"
AM_CONDITIONAL(HAVE_RPM, test "$RPMSOURCEDIR" != "NOT-FOUND")
AC_SUBST(RPMSOURCEDIR)

AC_CONFIG_FILES([Makefile
	libvncserver/Makefile
	contrib/Makefile
	examples/Makefile
	vncterm/Makefile
	classes/Makefile
	classes/ssl/Makefile
	libvncclient/Makefile
	client_examples/Makefile
	test/Makefile
	libvncserver-config
	LibVNCServer.spec])
#
# x11vnc only:
#
if test "$build_x11vnc" = "yes"; then
	#
	# NOTE: if you are using the LibVNCServer-X.Y.Z.tar.gz source
	# tarball and nevertheless want to run autoconf (i.e. aclocal,
	# autoheader, automake, autoconf) AGAIN (perhaps you have a
	# special target system, e.g. embedded) then you will need to
	# comment out the following 'AC_CONFIG_FILES' line to avoid
	# automake error messages like:
	#
	# configure.ac:690: required file `x11vnc/Makefile.in' not found
	#
	AC_CONFIG_FILES([x11vnc/Makefile x11vnc/misc/Makefile])
fi

AC_CONFIG_COMMANDS([chmod-libvncserver-config],[chmod a+x libvncserver-config])
AC_OUTPUT
chmod a+x ./libvncserver-config