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diff --git a/nx-X11/lib/Xcomposite/configure.ac b/nx-X11/lib/Xcomposite/configure.ac
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+dnl
+dnl $Id: configure.ac,v 1.1 2004/07/31 05:50:39 anholt Exp $
+dnl
+dnl Copyright © 2003 Keith Packard, Noah Levitt
+dnl
+dnl Permission to use, copy, modify, distribute, and sell this software and its
+dnl documentation for any purpose is hereby granted without fee, provided that
+dnl the above copyright notice appear in all copies and that both that
+dnl copyright notice and this permission notice appear in supporting
+dnl documentation, and that the name of Keith Packard not be used in
+dnl advertising or publicity pertaining to distribution of the software without
+dnl specific, written prior permission. Keith Packard makes no
+dnl representations about the suitability of this software for any purpose. It
+dnl is provided "as is" without express or implied warranty.
+dnl
+dnl KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+dnl INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+dnl EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+dnl CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+dnl DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+dnl TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+dnl PERFORMANCE OF THIS SOFTWARE.
+dnl
+dnl Process this file with autoconf to create configure.
+
+AC_PREREQ([2.57])
+
+dnl
+dnl Version should match the current XComposite version. XCompositeQueryVersion
+dnl returns the version from xcompositewire.h, NOT the version we set here. But we
+dnl try to keep these the same. Note that the library has an extra
+dnl digit in the version number to track changes which don't affect the
+dnl protocol, so Xcomposite version l.n.m corresponds to protocol version l.n
+dnl that 'revision' number appears in Xcomposite.h and has to be manually
+dnl synchronized.
+dnl
+AC_INIT(libXcomposite, 0.2.0, [keithp@keithp.com], libXcomposite)
+AM_INIT_AUTOMAKE([dist-bzip2])
+AM_MAINTAINER_MODE
+
+AM_CONFIG_HEADER(config.h)
+AC_CONFIG_AUX_DIR(.)
+
+# Check for progs
+AC_PROG_CC
+AC_PROG_LIBTOOL
+
+# Check for X
+PKG_CHECK_MODULES(X, x11,
+ [x_found_with_pkgconfig=yes],
+ [x_found_with_pkgconfig=no])
+AC_SUBST(X_CFLAGS)
+AC_SUBST(X_LIBS)
+
+if test "$x_found_with_pkgconfig" = "no"
+then
+ AC_PATH_XTRA
+ X_LIBS="$X_LIBS -lX11"
+
+ if test "x$no_x" = "xyes"
+ then
+ AC_MSG_ERROR([X is required, but it was either disabled or not found.])
+ fi
+
+ save_LIBS="$LIBS"
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $X_CFLAGS"
+ LIBS="$LIBS $X_LIBS"
+
+ AC_MSG_CHECKING([for XTHREADS in Xlib])
+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
+ [[return XInitThreads() == 0 ? 0 : 1;]])],
+ [xthreads=no],
+ [xthreads=yes],
+ [xthreads=yes])
+
+ AC_MSG_RESULT($xthreads)
+
+ LIBS="$save_LIBS"
+ CFLAGS="$save_CFLAGS"
+
+ if test "x$xthreads" = "xyes"
+ then
+ X_CFLAGS="$X_CFLAGS -DXTHREADS"
+ fi
+fi
+
+# Check compositeext configuration, strip extra digits from package version to
+# find the required protocol version
+
+if test "$VERSION" = "" ; then
+ VERSION=$PACKAGE_VERSION;
+fi
+COMPOSITEEXT_VERSION=[`echo $VERSION | sed 's/^\([0-9][0-9]*\.[0-9][0-9]*\).*$/\1/'`]
+PKG_CHECK_MODULES(XCOMPOSITE, [compositeext >= $COMPOSITEEXT_VERSION] xfixes)
+AC_SUBST(XCOMPOSITE_CFLAGS)
+AC_SUBST(XCOMPOSITE_LIBS)
+
+AC_OUTPUT([Makefile
+ xcomposite.pc])
+