sync code with last improvements from OpenBSD

lib/libXScrnSaver/configure.ac

@@ -0,0 +1,55 @@
+
+#  Copyright 2005 Red Hat, Inc.
+#
+#  Permission to use, copy, modify, distribute, and sell this software and its
+#  documentation for any purpose is hereby granted without fee, provided that
+#  the above copyright notice appear in all copies and that both that
+#  copyright notice and this permission notice appear in supporting
+#  documentation, and that the name of Red Hat not be used in
+#  advertising or publicity pertaining to distribution of the software without
+#  specific, written prior permission.  Red Hat makes no
+#  representations about the suitability of this software for any purpose.  It
+#  is provided "as is" without express or implied warranty.
+#
+#  RED HAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+#  INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+#  EVENT SHALL RED HAT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+#  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+#  DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+#  TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+#  PERFORMANCE OF THIS SOFTWARE.
+#
+
+# Initialize Autoconf
+AC_PREREQ([2.60])
+AC_INIT([libXScrnSaver], [1.2.4],
+        [https://gitlab.freedesktop.org/xorg/lib/libxscrnsaver/-/issues],
+        [libXScrnSaver])
+AC_CONFIG_SRCDIR([Makefile.am])
+AC_CONFIG_HEADERS([config.h])
+
+# Initialize Automake
+AM_INIT_AUTOMAKE([foreign dist-xz])
+
+# Initialize libtool
+AC_PROG_LIBTOOL
+
+# Require X.Org macros 1.8 or later for MAN_SUBSTS set by XORG_MANPAGE_SECTIONS
+m4_ifndef([XORG_MACROS_VERSION],
+          [m4_fatal([must install xorg-macros 1.8 or later before running autoconf/autogen])])
+XORG_MACROS_VERSION(1.8)
+XORG_DEFAULT_OPTIONS
+XORG_CHECK_MALLOC_ZERO
+
+# Obtain compiler/linker options for dependencies
+PKG_CHECK_MODULES(XSCRNSAVER, x11 xext xextproto [scrnsaverproto >= 1.2])
+
+# Allow checking code with lint, sparse, etc.
+XORG_WITH_LINT
+XORG_LINT_LIBRARY([Xss])
+
+AC_CONFIG_FILES([Makefile
+		src/Makefile
+		man/Makefile
+		xscrnsaver.pc])
+AC_OUTPUT