For reasons explained in [1], I'm starting to move all AC_LIBOBJ invocations
to the module description. In particular, this will make it possible again
to use AC_REQUIRE in an unlimited way without introducing subtle bugs.

Here are the proposed first 7 patches, along with a normal bug fix.

[1] http://lists.gnu.org/archive/html/bug-gnulib/2011-05/msg00174.html

-- 
In memoriam Peter van Pels <http://en.wikipedia.org/wiki/Peter_van_Pels>
From a7d659efb40f34533716fd8c1ff90a5a5f208b16 Mon Sep 17 00:00:00 2001
From: Bruno Haible <br...@clisp.org>
Date: Fri, 6 May 2011 00:59:02 +0200
Subject: [PATCH 1/8] alphasort: Move AC_LIBOBJ invocations to module description.

* m4/alphasort.m4 (gl_FUNC_ALPHASORT): Move AC_LIBOBJ and
gl_PREREQ_ALPHASORT invocations from here...
* modules/alphasort (configure.ac): ... to here.
---
 ChangeLog         |    7 +++++++
 m4/alphasort.m4   |    4 +---
 modules/alphasort |    4 ++++
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 3c60a4e..635d739 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2011-05-05  Bruno Haible  <br...@clisp.org>
 
+	alphasort: Move AC_LIBOBJ invocations to module description.
+	* m4/alphasort.m4 (gl_FUNC_ALPHASORT): Move AC_LIBOBJ and
+	gl_PREREQ_ALPHASORT invocations from here...
+	* modules/alphasort (configure.ac): ... to here.
+
+2011-05-05  Bruno Haible  <br...@clisp.org>
+
 	fclose, fflush: Respect rules for use of AC_LIBOBJ.
 	* m4/fflush.m4 (gl_FUNC_FFLUSH): Don't invoke gl_REPLACE_FCLOSE.
 	* m4/fclose.m4 (gl_FUNC_FCLOSE): Invoke gl_FUNC_FFLUSH_STDIN and
diff --git a/m4/alphasort.m4 b/m4/alphasort.m4
index 3863f39..e59aa74 100644
--- a/m4/alphasort.m4
+++ b/m4/alphasort.m4
@@ -1,4 +1,4 @@
-# alphasort.m4 serial 1
+# alphasort.m4 serial 2
 dnl Copyright (C) 2009-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -14,8 +14,6 @@ AC_DEFUN([gl_FUNC_ALPHASORT],
   AC_CHECK_FUNCS([alphasort])
   if test $ac_cv_func_alphasort = no; then
     HAVE_ALPHASORT=0
-    AC_LIBOBJ([alphasort])
-    gl_PREREQ_ALPHASORT
   fi
 ])
 
diff --git a/modules/alphasort b/modules/alphasort
index 319eccc..e567057 100644
--- a/modules/alphasort
+++ b/modules/alphasort
@@ -11,6 +11,10 @@ extensions
 
 configure.ac:
 gl_FUNC_ALPHASORT
+if test $HAVE_ALPHASORT = 0; then
+  AC_LIBOBJ([alphasort])
+  gl_PREREQ_ALPHASORT
+fi
 gl_DIRENT_MODULE_INDICATOR([alphasort])
 
 Makefile.am:
-- 
1.6.3.2

From 9e905c9630c9cbdce1b66086eeec10f53e82048f Mon Sep 17 00:00:00 2001
From: Bruno Haible <br...@clisp.org>
Date: Fri, 6 May 2011 01:09:53 +0200
Subject: [PATCH 4/8] btowc: Move AC_LIBOBJ invocations to module description.

* m4/btowc.m4 (gl_FUNC_BTOWC): Move AC_LIBOBJ and gl_PREREQ_BTOWC
invocations from here...
* modules/btowc (configure.ac): ... to here.
---
 ChangeLog     |    5 +++++
 m4/btowc.m4   |    6 +-----
 modules/btowc |    4 ++++
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 5b69d79..1a69cdc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2011-05-05  Bruno Haible  <br...@clisp.org>
 
+	btowc: Move AC_LIBOBJ invocations to module description.
+	* m4/btowc.m4 (gl_FUNC_BTOWC): Move AC_LIBOBJ and gl_PREREQ_BTOWC
+	invocations from here...
+	* modules/btowc (configure.ac): ... to here.
+
 	atoll: Move AC_LIBOBJ invocations to module description.
 	* m4/atoll.m4 (gl_FUNC_ATOLL): Move AC_LIBOBJ and gl_PREREQ_ATOLL
 	invocations from here...
diff --git a/m4/btowc.m4 b/m4/btowc.m4
index 32bf0cf..2b845e7 100644
--- a/m4/btowc.m4
+++ b/m4/btowc.m4
@@ -1,4 +1,4 @@
-# btowc.m4 serial 9
+# btowc.m4 serial 10
 dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -108,10 +108,6 @@ int main ()
       *) REPLACE_BTOWC=1 ;;
     esac
   fi
-  if test $HAVE_BTOWC = 0 || test $REPLACE_BTOWC = 1; then
-    AC_LIBOBJ([btowc])
-    gl_PREREQ_BTOWC
-  fi
 ])
 
 # Prerequisites of lib/btowc.c.
diff --git a/modules/btowc b/modules/btowc
index 1566a2f..b9572a6 100644
--- a/modules/btowc
+++ b/modules/btowc
@@ -12,6 +12,10 @@ mbtowc          [test $HAVE_BTOWC = 0 || test $REPLACE_BTOWC = 1]
 
 configure.ac:
 gl_FUNC_BTOWC
+if test $HAVE_BTOWC = 0 || test $REPLACE_BTOWC = 1; then
+  AC_LIBOBJ([btowc])
+  gl_PREREQ_BTOWC
+fi
 gl_WCHAR_MODULE_INDICATOR([btowc])
 
 Makefile.am:
-- 
1.6.3.2

From 4f5d6e3303187de7b1c3e41609f798de1f47f219 Mon Sep 17 00:00:00 2001
From: Bruno Haible <br...@clisp.org>
Date: Fri, 6 May 2011 01:06:05 +0200
Subject: [PATCH 3/8] atoll: Move AC_LIBOBJ invocations to module description.

* m4/atoll.m4 (gl_FUNC_ATOLL): Move AC_LIBOBJ and gl_PREREQ_ATOLL
invocations from here...
* modules/atoll (configure.ac): ... to here.
---
 ChangeLog     |    5 +++++
 m4/atoll.m4   |    4 +---
 modules/atoll |    4 ++++
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 44da525..5b69d79 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2011-05-05  Bruno Haible  <br...@clisp.org>
 
+	atoll: Move AC_LIBOBJ invocations to module description.
+	* m4/atoll.m4 (gl_FUNC_ATOLL): Move AC_LIBOBJ and gl_PREREQ_ATOLL
+	invocations from here...
+	* modules/atoll (configure.ac): ... to here.
+
 	argz: Move AC_LIBOBJ invocations to module description.
 	* m4/argz.m4 (gl_FUNC_ARGZ): Move AC_LIBOBJ invocation from here...
 	* modules/argz (configure.ac): ... to here.
diff --git a/m4/atoll.m4 b/m4/atoll.m4
index f504542..6cb4dd1 100644
--- a/m4/atoll.m4
+++ b/m4/atoll.m4
@@ -1,4 +1,4 @@
-# atoll.m4 serial 1
+# atoll.m4 serial 2
 dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -14,8 +14,6 @@ AC_DEFUN([gl_FUNC_ATOLL],
     AC_CHECK_FUNCS([atoll])
     if test $ac_cv_func_atoll = no; then
       HAVE_ATOLL=0
-      AC_LIBOBJ([atoll])
-      gl_PREREQ_ATOLL
     fi
   fi
 ])
diff --git a/modules/atoll b/modules/atoll
index d979a00..d1a5364 100644
--- a/modules/atoll
+++ b/modules/atoll
@@ -11,6 +11,10 @@ strtoll         [test $HAVE_ATOLL = 0]
 
 configure.ac:
 gl_FUNC_ATOLL
+if test $HAVE_ATOLL = 0; then
+  AC_LIBOBJ([atoll])
+  gl_PREREQ_ATOLL
+fi
 gl_STDLIB_MODULE_INDICATOR([atoll])
 
 Makefile.am:
-- 
1.6.3.2

From b79beade410262f774c68398a4c659478c7f511e Mon Sep 17 00:00:00 2001
From: Bruno Haible <br...@clisp.org>
Date: Fri, 6 May 2011 01:03:00 +0200
Subject: [PATCH 2/8] argz: Move AC_LIBOBJ invocations to module description.

* m4/argz.m4 (gl_FUNC_ARGZ): Move AC_LIBOBJ invocation from here...
* modules/argz (configure.ac): ... to here.
---
 ChangeLog    |    4 ++++
 m4/argz.m4   |    7 +++----
 modules/argz |    3 +++
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 635d739..44da525 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2011-05-05  Bruno Haible  <br...@clisp.org>
 
+	argz: Move AC_LIBOBJ invocations to module description.
+	* m4/argz.m4 (gl_FUNC_ARGZ): Move AC_LIBOBJ invocation from here...
+	* modules/argz (configure.ac): ... to here.
+
 	alphasort: Move AC_LIBOBJ invocations to module description.
 	* m4/alphasort.m4 (gl_FUNC_ALPHASORT): Move AC_LIBOBJ and
 	gl_PREREQ_ALPHASORT invocations from here...
diff --git a/m4/argz.m4 b/m4/argz.m4
index 0248a45..503301e 100644
--- a/m4/argz.m4
+++ b/m4/argz.m4
@@ -7,7 +7,7 @@
 # unlimited permission to copy and/or distribute it, with or without
 # modifications, as long as this notice is preserved.
 
-# serial 9 argz.m4
+# serial 10 argz.m4
 
 AC_DEFUN([gl_FUNC_ARGZ],
 [gl_PREREQ_ARGZ
@@ -27,7 +27,7 @@ AC_CHECK_TYPES([error_t],
 #endif])
 
 ARGZ_H=
-AC_CHECK_FUNC([argz_replace], [], [ARGZ_H=argz.h; AC_LIBOBJ([argz])])
+AC_CHECK_FUNC([argz_replace], [], [ARGZ_H=argz.h])
 
 dnl if have system argz functions, allow forced use of
 dnl libltdl-supplied implementation (and default to do so
@@ -70,8 +70,7 @@ AS_IF([test -z "$ARGZ_H"],
      AS_IF([test "$lt_cv_sys_argz_works" = yes],
         [AC_DEFINE([HAVE_WORKING_ARGZ], [1],
                    [This value is set to 1 to indicate that the system argz facility works])],
-        [ARGZ_H=argz.h
-        AC_LIBOBJ([argz])])])
+        [ARGZ_H=argz.h])])
 
 AC_SUBST([ARGZ_H])
 AM_CONDITIONAL([GL_GENERATE_ARGZ_H], [test -n "$ARGZ_H"])
diff --git a/modules/argz b/modules/argz
index 2cbb212..a8eb55e 100644
--- a/modules/argz
+++ b/modules/argz
@@ -16,6 +16,9 @@ strstr          [test -n "$ARGZ_H"]
 
 configure.ac:
 gl_FUNC_ARGZ
+if test -n "$ARGZ_H"; then
+  AC_LIBOBJ([argz])
+fi
 
 Makefile.am:
 BUILT_SOURCES += $(ARGZ_H)
-- 
1.6.3.2

From 0b92d9129eb07cc9721fb771b8e0c7c43f2895e5 Mon Sep 17 00:00:00 2001
From: Bruno Haible <br...@clisp.org>
Date: Fri, 6 May 2011 01:15:44 +0200
Subject: [PATCH 5/8] calloc-posix, calloc-gnu: Move AC_LIBOBJs to module description.

* m4/calloc.m4 (gl_REPLACE_CALLOC): Remove macro.
(gl_FUNC_CALLOC_GNU, gl_FUNC_CALLOC_POSIX): Instead, just set
REPLACE_CALLOC.
* modules/calloc-posix (configure.ac): Invoke AC_LIBOBJ here.
* modules/calloc-gnu (configure.ac): Likewise.
---
 ChangeLog            |    7 +++++++
 m4/calloc.m4         |   12 +++---------
 modules/calloc-gnu   |    3 +++
 modules/calloc-posix |    3 +++
 4 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 1a69cdc..8f61104 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2011-05-05  Bruno Haible  <br...@clisp.org>
 
+	calloc-posix, calloc-gnu: Move AC_LIBOBJs to module description.
+	* m4/calloc.m4 (gl_REPLACE_CALLOC): Remove macro.
+	(gl_FUNC_CALLOC_GNU, gl_FUNC_CALLOC_POSIX): Instead, just set
+	REPLACE_CALLOC.
+	* modules/calloc-posix (configure.ac): Invoke AC_LIBOBJ here.
+	* modules/calloc-gnu (configure.ac): Likewise.
+
 	btowc: Move AC_LIBOBJ invocations to module description.
 	* m4/btowc.m4 (gl_FUNC_BTOWC): Move AC_LIBOBJ and gl_PREREQ_BTOWC
 	invocations from here...
diff --git a/m4/calloc.m4 b/m4/calloc.m4
index 8f462b3..3bab709 100644
--- a/m4/calloc.m4
+++ b/m4/calloc.m4
@@ -1,4 +1,4 @@
-# calloc.m4 serial 12
+# calloc.m4 serial 13
 
 # Copyright (C) 2004-2011 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -49,7 +49,7 @@ AC_DEFUN([gl_FUNC_CALLOC_GNU],
                [Define to 1 if your system has a GNU libc compatible `calloc'
                 function, and to 0 otherwise.])],
     [AC_DEFINE([HAVE_CALLOC_GNU], [0])
-     gl_REPLACE_CALLOC
+     REPLACE_CALLOC=1
     ])
 ])# gl_FUNC_CALLOC_GNU
 
@@ -66,12 +66,6 @@ AC_DEFUN([gl_FUNC_CALLOC_POSIX],
     AC_DEFINE([HAVE_CALLOC_POSIX], [1],
       [Define if the 'calloc' function is POSIX compliant.])
   else
-    gl_REPLACE_CALLOC
+    REPLACE_CALLOC=1
   fi
 ])
-
-AC_DEFUN([gl_REPLACE_CALLOC],
-[
-  AC_LIBOBJ([calloc])
-  REPLACE_CALLOC=1
-])
diff --git a/modules/calloc-gnu b/modules/calloc-gnu
index 734d973..ffc8b50 100644
--- a/modules/calloc-gnu
+++ b/modules/calloc-gnu
@@ -10,6 +10,9 @@ calloc-posix
 
 configure.ac:
 gl_FUNC_CALLOC_GNU
+if test $REPLACE_CALLOC = 1; then
+  AC_LIBOBJ([calloc])
+fi
 gl_MODULE_INDICATOR([calloc-gnu])
 
 Makefile.am:
diff --git a/modules/calloc-posix b/modules/calloc-posix
index f93b90e..ef274ed 100644
--- a/modules/calloc-posix
+++ b/modules/calloc-posix
@@ -11,6 +11,9 @@ stdlib
 
 configure.ac:
 gl_FUNC_CALLOC_POSIX
+if test $REPLACE_CALLOC = 1; then
+  AC_LIBOBJ([calloc])
+fi
 gl_STDLIB_MODULE_INDICATOR([calloc-posix])
 
 Makefile.am:
-- 
1.6.3.2

From 2819ff6e3ee0822aeafdc8f2ace81de3d75ef05b Mon Sep 17 00:00:00 2001
From: Bruno Haible <br...@clisp.org>
Date: Fri, 6 May 2011 01:47:42 +0200
Subject: [PATCH 8/8] chdir-long: Move AC_LIBOBJ invocations to module description.

* m4/chdir-long.m4 (gl_FUNC_CHDIR_LONG): Move AC_LIBOBJ and
gl_PREREQ_CHDIR_LONG invocations from here...
* modules/chdir-long (configure.ac): ... to here.
---
 ChangeLog          |    5 +++++
 m4/chdir-long.m4   |    7 +------
 modules/chdir-long |    4 ++++
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index a8b2a0e..cb5efec 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2011-05-05  Bruno Haible  <br...@clisp.org>
 
+	chdir-long: Move AC_LIBOBJ invocations to module description.
+	* m4/chdir-long.m4 (gl_FUNC_CHDIR_LONG): Move AC_LIBOBJ and
+	gl_PREREQ_CHDIR_LONG invocations from here...
+	* modules/chdir-long (configure.ac): ... to here.
+
 	canonicalize-lgpl: Fix autoconf macro ordering bug.
 	* m4/canonicalize.m4 (gl_CANONICALIZE_LGPL): Require
 	gl_STDLIB_H_DEFAULTS.
diff --git a/m4/chdir-long.m4 b/m4/chdir-long.m4
index 27c61d2..9a343ac 100644
--- a/m4/chdir-long.m4
+++ b/m4/chdir-long.m4
@@ -1,4 +1,4 @@
-#serial 11
+#serial 12
 
 # Use Gnulib's robust chdir function.
 # It can handle arbitrarily long directory names, which means
@@ -25,11 +25,6 @@ have_arbitrary_file_name_length_limit
 #endif],
     gl_cv_have_arbitrary_file_name_length_limit=yes,
     gl_cv_have_arbitrary_file_name_length_limit=no)])
-
-  if test $gl_cv_have_arbitrary_file_name_length_limit = yes; then
-    AC_LIBOBJ([chdir-long])
-    gl_PREREQ_CHDIR_LONG
-  fi
 ])
 
 AC_DEFUN([gl_PREREQ_CHDIR_LONG],
diff --git a/modules/chdir-long b/modules/chdir-long
index 0c8e792..22236c6 100644
--- a/modules/chdir-long
+++ b/modules/chdir-long
@@ -20,6 +20,10 @@ stdlib          [test $gl_cv_have_arbitrary_file_name_length_limit = yes]
 
 configure.ac:
 gl_FUNC_CHDIR_LONG
+if test $gl_cv_have_arbitrary_file_name_length_limit = yes; then
+  AC_LIBOBJ([chdir-long])
+  gl_PREREQ_CHDIR_LONG
+fi
 
 Makefile.am:
 
-- 
1.6.3.2

From 5c53c99d90c1fbcac37fb3b2dfe85d374a212b5a Mon Sep 17 00:00:00 2001
From: Bruno Haible <br...@clisp.org>
Date: Fri, 6 May 2011 01:29:37 +0200
Subject: [PATCH 6/8] canonicalize-lgpl: Move AC_LIBOBJ invocations to module description.

* m4/canonicalize.m4 (gl_CANONICALIZE_LGPL): Move AC_LIBOBJ invocation
from here...
* modules/canonicalize-lgpl (configure.ac): ... to here.
---
 ChangeLog                 |    5 +++++
 m4/canonicalize.m4        |    6 ++----
 modules/canonicalize-lgpl |    3 +++
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 8f61104..9b2f047 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2011-05-05  Bruno Haible  <br...@clisp.org>
 
+	canonicalize-lgpl: Move AC_LIBOBJ invocations to module description.
+	* m4/canonicalize.m4 (gl_CANONICALIZE_LGPL): Move AC_LIBOBJ invocation
+	from here...
+	* modules/canonicalize-lgpl (configure.ac): ... to here.
+
 	calloc-posix, calloc-gnu: Move AC_LIBOBJs to module description.
 	* m4/calloc.m4 (gl_REPLACE_CALLOC): Remove macro.
 	(gl_FUNC_CALLOC_GNU, gl_FUNC_CALLOC_POSIX): Instead, just set
diff --git a/m4/canonicalize.m4 b/m4/canonicalize.m4
index dcc6039..b1d9e95 100644
--- a/m4/canonicalize.m4
+++ b/m4/canonicalize.m4
@@ -1,4 +1,4 @@
-# canonicalize.m4 serial 17
+# canonicalize.m4 serial 18
 
 dnl Copyright (C) 2003-2007, 2009-2011 Free Software Foundation, Inc.
 
@@ -29,16 +29,14 @@ AC_DEFUN([gl_CANONICALIZE_LGPL],
   AC_REQUIRE([gl_CANONICALIZE_LGPL_SEPARATE])
   if test $ac_cv_func_canonicalize_file_name = no; then
     HAVE_CANONICALIZE_FILE_NAME=0
-    AC_LIBOBJ([canonicalize-lgpl])
     if test $ac_cv_func_realpath = no; then
       HAVE_REALPATH=0
     elif test "$gl_cv_func_realpath_works" != yes; then
       REPLACE_REALPATH=1
     fi
   elif test "$gl_cv_func_realpath_works" != yes; then
-    AC_LIBOBJ([canonicalize-lgpl])
-    REPLACE_REALPATH=1
     REPLACE_CANONICALIZE_FILE_NAME=1
+    REPLACE_REALPATH=1
   fi
 ])
 
diff --git a/modules/canonicalize-lgpl b/modules/canonicalize-lgpl
index 1fb23c2..6e6833c 100644
--- a/modules/canonicalize-lgpl
+++ b/modules/canonicalize-lgpl
@@ -20,6 +20,9 @@ sys_stat        [test $HAVE_CANONICALIZE_FILE_NAME = 0 || test $REPLACE_CANONICA
 
 configure.ac:
 gl_CANONICALIZE_LGPL
+if test $HAVE_CANONICALIZE_FILE_NAME = 0 || test $REPLACE_CANONICALIZE_FILE_NAME = 1; then
+  AC_LIBOBJ([canonicalize-lgpl])
+fi
 gl_MODULE_INDICATOR([canonicalize-lgpl])
 gl_STDLIB_MODULE_INDICATOR([canonicalize_file_name])
 gl_STDLIB_MODULE_INDICATOR([realpath])
-- 
1.6.3.2

From 3a24364b483e274b6baf1763d6c8691a9a53920a Mon Sep 17 00:00:00 2001
From: Bruno Haible <br...@clisp.org>
Date: Fri, 6 May 2011 01:37:49 +0200
Subject: [PATCH 7/8] canonicalize-lgpl: Fix autoconf macro ordering bug.

* m4/canonicalize.m4 (gl_CANONICALIZE_LGPL): Require
gl_STDLIB_H_DEFAULTS.
---
 ChangeLog          |    4 ++++
 m4/canonicalize.m4 |    1 +
 2 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 9b2f047..a8b2a0e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2011-05-05  Bruno Haible  <br...@clisp.org>
 
+	canonicalize-lgpl: Fix autoconf macro ordering bug.
+	* m4/canonicalize.m4 (gl_CANONICALIZE_LGPL): Require
+	gl_STDLIB_H_DEFAULTS.
+
 	canonicalize-lgpl: Move AC_LIBOBJ invocations to module description.
 	* m4/canonicalize.m4 (gl_CANONICALIZE_LGPL): Move AC_LIBOBJ invocation
 	from here...
diff --git a/m4/canonicalize.m4 b/m4/canonicalize.m4
index b1d9e95..b157170 100644
--- a/m4/canonicalize.m4
+++ b/m4/canonicalize.m4
@@ -26,6 +26,7 @@ AC_DEFUN([gl_FUNC_CANONICALIZE_FILENAME_MODE],
 # Provides canonicalize_file_name and realpath.
 AC_DEFUN([gl_CANONICALIZE_LGPL],
 [
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
   AC_REQUIRE([gl_CANONICALIZE_LGPL_SEPARATE])
   if test $ac_cv_func_canonicalize_file_name = no; then
     HAVE_CANONICALIZE_FILE_NAME=0
-- 
1.6.3.2

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