From 050ec5cb29345afb71213ef17b780789b9673564 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Mon, 19 Jun 2006 07:19:00 +0000
Subject: (gl_IGNORE_UNUSED_LIBRARIES): Prefer binutils's --as-needed option if
 available.

---
 m4/ChangeLog     | 6 ++++++
 m4/lib-ignore.m4 | 7 ++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

(limited to 'm4')

diff --git a/m4/ChangeLog b/m4/ChangeLog
index 2fc9a180b..8ad70a2ee 100644
--- a/m4/ChangeLog
+++ b/m4/ChangeLog
@@ -1,3 +1,9 @@
+2006-06-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* lib-ignore.m4 (gl_IGNORE_UNUSED_LIBRARIES): Prefer binutils's
+	--as-needed option if available.  Problem reported by Albert Chin in
+	<http://lists.gnu.org/archive/html/bug-gnulib/2006-06/msg00114.html>.
+
 2006-06-18  Jim Meyering  <jim@meyering.net>
 
 	Test for a bug that causes glibc's getcwd to suffer a failed assertion.
diff --git a/m4/lib-ignore.m4 b/m4/lib-ignore.m4
index 348f6f44a..deaaee8e6 100644
--- a/m4/lib-ignore.m4
+++ b/m4/lib-ignore.m4
@@ -15,7 +15,12 @@ AC_DEFUN([gl_IGNORE_UNUSED_LIBRARIES],
      gl_saved_ldflags=$LDFLAGS
      # Use long option sequences like '-z ignore' to test for the feature,
      # to forestall problems with linkers that have -z, -i, -g, -n, etc. flags.
-     for gl_flags in '-Wl,-z,ignore' '-z ignore'; do
+     for gl_flags in \
+	'-Wl,--as-needed' \
+	'-Wl,-z,ignore' \
+	'--as-needed' \
+	'-z ignore'
+     do
        LDFLAGS="$gl_flags $LDFLAGS"
        AC_LINK_IFELSE([AC_LANG_PROGRAM()],
 	 [gl_cv_ignore_unused_libraries=$gl_flags])
-- 
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