#undef SIGPOLL and SIGURG as well as SIGIO.

diff --git a/src/s/gnu-linux.h b/src/s/gnu-linux.h
index 1017e2dfe62404d9f47697565ba042d8db41725a..8d2278ec7e16df3ad5c568fb8f3b2d2c6d92681a 100644 (file)
--- a/src/s/gnu-linux.h
+++ b/src/s/gnu-linux.h
@@ -169,6 +169,10 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 /* Here we assume that signal.h is already included.  */
 #ifdef emacs
 #undef SIGIO
+/* Some versions of Linux define SIGURG and SIGPOLL as aliases for SIGIO.
+   This prevents lossage in process.c.  */
+#undef SIGURG
+#undef SIGPOLL
 #endif
 
 /* This is needed for sysdep.c */