configure.ac: Error out if with-file-notification=w32 is specified on Cygwin

Fixes: 19909 Copyright-paperwork-exempt: yes

configure.ac: Error out if with-file-notification=w32 is specified on Cygwin
Fixes: 19909 Copyright-paperwork-exempt: yes
04fb1029 · Robert Pluim · Ken Brown · da02eb55 · 04fb1029 · 04fb1029
Commit 04fb1029 authored Mar 02, 2015 by Robert Pluim Committed by Ken Brown Mar 02, 2015
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--- a/ChangeLog
+++ b/ChangeLog
+2015-03-02  Robert Pluim  <rpluim@gmail.com>  (tiny change)
+
+	* configure.ac: Error out if with-file-notification=w32 is
+	specified on Cygwin.  (Bug#19909)
+
 2015-02-27  Paul Eggert  <eggert@cs.ucla.edu>

 	Don't require GNU putenv

--- a/configure.ac
+++ b/configure.ac
@@ -2664,6 +2664,11 @@ fi

 dnl MS Windows native file monitor is available for mingw32 only.
 case $with_file_notification,$opsys in
+  w32,cygwin)
+    AC_MSG_ERROR([`--with-file-notification=w32' was specified, but
+    this is only supported on MS-Windows native and MinGW32 builds.
+    Consider using gfile instead.])
+    ;;
  w32,* | yes,mingw32)
    AC_CHECK_HEADER(windows.h)
    if test "$ac_cv_header_windows_h" = yes ; then