Re: error: possibly undefined macro: AC_CHECK_HEADERS_ONCE

[Paul Eggert]

Bruno Haible <address@hidden> writes:

> That appears to be obsolete. As far as I see, there are no users of this
> macro which don't also bundle regex.c.

Yes, that sounds right.  I installed this patch into gnulib, and then
reindented.

2005-08-23  Paul Eggert  <address@hidden>

        * m4/regex.m4 (gl_INCLUDED_REGEX): Remove; no longer used.
        All contents moved to gl_REGEX.
        (gl_REGEX): Don't bother checking whether lib/regex.c exists;
        assume that it does.

--- m4/regex.m4 21 Aug 2005 00:51:27 -0000      1.41
+++ m4/regex.m4 23 Aug 2005 18:46:22 -0000
@@ -1,4 +1,4 @@
-#serial 25
+#serial 26
 
 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 Free
 # Software Foundation, Inc.
@@ -12,13 +12,6 @@ dnl Mostly written by Jim Meyering.
 
 AC_DEFUN([gl_REGEX],
 [
-  gl_INCLUDED_REGEX([lib/regex.c])
-])
-
-dnl Usage: gl_INCLUDED_REGEX([lib/regex.c])
-dnl
-AC_DEFUN([gl_INCLUDED_REGEX],
-  [
     AC_LIBSOURCES(
       [regcomp.c, regex.c, regex.h,
        regex_internal.c, regex_internal.h, regexec.c])
@@ -103,10 +96,6 @@ AC_DEFUN([gl_INCLUDED_REGEX],
       ac_use_included_regex=no
     fi
 
-    test -n "$1" || AC_MSG_ERROR([missing argument])
-    m4_syscmd([test -f '$1'])
-    ifelse(m4_sysval, 0,
-      [
        AC_ARG_WITH([included-regex],
          [  --without-included-regex don't compile regex; this is the default 
on
                           systems with recent-enough versions of the GNU C
@@ -117,10 +106,7 @@ AC_DEFUN([gl_INCLUDED_REGEX],
          AC_LIBOBJ([regex])
          gl_PREREQ_REGEX
        fi
-      ],
-    )
-  ]
-)
+])
 
 # Prerequisites of lib/regex.c and lib/regex_internal.c.
 AC_DEFUN([gl_PREREQ_REGEX],