+ LIBS=$OLDLIBS
+ CPPFLAGS=$OLDCPPFLAGS
+
+ AC_MSG_CHECKING([for the Sync extension])
+ if test "$SYNC" = "yes"; then
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ fi
+])
+
+# X11_SM()
+#
+# Check for the presence of SMlib for session management.
+# Defines "USE_SM" if SMlib is present.
+AC_DEFUN([X11_SM],
+[
+ AC_REQUIRE([X11_DEVEL])
+
+ AC_ARG_ENABLE([session-management],
+ AC_HELP_STRING(
+ [--disable-session-management], [build without support for session managers [[default=enabled]]]),
+ [SM=$enableval], [SM="yes"])
+
+ if test "$SM" = "yes"; then
+ # Store these
+ OLDLIBS=$LIBS
+ OLDCPPFLAGS=$CPPFLAGS
+
+ CPPFLAGS="$CPPFLAGS $X_CFLAGS"
+ LIBS="$LIBS $X_LIBS"
+
+ SM="no"
+
+ AC_CHECK_LIB([SM], [SmcSaveYourselfDone], [
+ AC_CHECK_HEADERS([X11/SM/SMlib.h], [
+ SM_CFLAGS="$X_CFLAGS"
+ SM_LIBS="-lSM -lICE"
+ AC_DEFINE(USE_SM, 1, [Use session management])
+ AC_SUBST(SM_CFLAGS)
+ AC_SUBST(SM_LIBS)
+ SM="yes"
+ ])
+ ])
+ fi
+