Warn from Cygwin GCC versions other than those known to succeed.

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index c47552e3654540086c7bf3a0e7e2e0436ec305eb..17c86d5c3f2cfe38e0fe6a72c12ce339c5226765 100644 (file)
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -2395,6 +2395,8 @@ addition, the Cygwin GCC 3.4.4-2 has problems with generating debug
 info.  Cygwin users are advised not to use these versions of GCC for
 compiling Emacs.  GCC versions 4.0.3 and 4.1.1 reportedly build a
 working Cygwin binary of Emacs, so we recommend these GCC versions.
+Note that these two versions of GCC, 4.0.3 and 4.1.1, are the _only_
+versions known to succeed in building Emacs (as of v22.1).
 
 *** Building the native MS-Windows port with Cygwin GCC can fail.