Override <errno.h> also on Cygwin.

[pspp] / doc / posix-functions / perror.texi

diff --git a/doc/posix-functions/perror.texi b/doc/posix-functions/perror.texi
index d08f1d04273413036c033f88ff6fb19bf384d60c..6b18eb7d5368958a6c1cc862b8049bcfea09fe71 100644 (file)
--- a/doc/posix-functions/perror.texi
+++ b/doc/posix-functions/perror.texi
@@ -4,10 +4,14 @@
 
 POSIX specification: @url{http://www.opengroup.org/susv3xsh/perror.html}
 
-Gnulib module: ---
+Gnulib module: perror
 
 Portability problems fixed by Gnulib:
 @itemize
+@item
+This function does not support the error values that are specified by POSIX
+but not defined by the system, on some platforms:
+OpenBSD 4.0, OSF/1 5.1, Cygwin, mingw.
 @end itemize
 
 Portability problems not fixed by Gnulib: