* ld.h (ld_config_type): Add field warn_constructors.

	* ldmain.c (add_to_set): Warn if config.warn_constructors.
	(constructor_callback): Likewise.
	* lexsup.c (parse_args): Handle -warn-constructors.
	* ld.texinfo, ld.1: Document -warn-constructors.
PR 7406.

diff --git a/ld/ld.1 b/ld/ld.1
index ce5f2443e8b172ec8f87eb148c1890f9c785c281..72ace8f0820c965be48280e1fa418559a509d7bb 100644 (file)
--- a/ld/ld.1
+++ b/ld/ld.1
@@ -1,4 +1,4 @@
-.\" Copyright (c) 1991, 1992 Free Software Foundation
+.\" Copyright (c) 1991, 92, 93, 94, 1995 Free Software Foundation
 .\" See section COPYING for conditions for redistribution
 .TH ld 1 "17 August 1992" "cygnus support" "GNU Development Tools"
 .de BP
@@ -111,6 +111,7 @@ ld \- the GNU linker
 .RB "[\|" \-\-verbose "\|]"
 .RB "[\|" \-\-version "\|]"
 .RB "[\|" \-warn\-common "\|]" 
+.RB "[\|" \-warn\-constructors "\|]" 
 .RB "[\|" \-warn\-once "\|]" 
 .RB "[\|" \-\-whole\-archive "\|]" 
 .RB "[\|" \-X "\|]" 
@@ -851,6 +852,12 @@ a symbol definition.  Unix linkers allow this somewhat sloppy practice,
 but linkers on some other operating systems do not.  This option allows
 you to find potential problems from combining global symbols.
 
+.TP
+.B \-warn\-constructors
+Warn if any global constructors are used.  This is only useful for a
+few object file formats.  For formats like COFF or ELF, the linker can
+not detect the use of global constructors.
+
 .TP
 .B \-warn\-once
 Only warn once for each undefined symbol, rather than once per module