from netbsd:

Change mips __warn_references() macro to use the ELF warning features
in binutils 2.6 and (patched) gcc 2.7.2. Only works with gcc in ANSI C
mode, for now.

diff --git a/sys/arch/pmax/include/cdefs.h b/sys/arch/pmax/include/cdefs.h
index 1b4a6cc..47499b6 100644 (file)
--- a/sys/arch/pmax/include/cdefs.h
+++ b/sys/arch/pmax/include/cdefs.h
@@ -1,4 +1,4 @@
-/*     $NetBSD: cdefs.h,v 1.3 1995/05/03 06:04:54 mellon Exp $ */
+/*     $NetBSD: cdefs.h,v 1.4 1995/12/15 01:17:04 jonathan Exp $       */
 
 /*
  * Copyright (c) 1995 Carnegie-Mellon University.
@@ -33,6 +33,13 @@
 #define        _C_LABEL(x)     _STRING(x)
 
 #define        __indr_references(sym,msg)      /* nothing */
+
+#if defined __GNUC__ && defined __STDC__
+#define __warn_references(sym, msg)                  \
+  static const char __evoke_link_warning_##sym[]     \
+    __attribute__ ((section (".gnu.warning." #sym))) = msg;
+#else
 #define        __warn_references(sym,msg)      /* nothing */
+#endif
 
 #endif /* !_MACHINE_CDEFS_H_ */