remove AC_REQUIRE from AU_DEFUN

[Alexandre Duret-Lutz]

This is a followup to a bug report I sent to bug-autoconf@ in
April.  AC_REQUIRE cannot be called from the top-level (i.e.,
configure.ac itself), so it shouldn't be used in AU_DEFUN.
Otherwise autoupdate can produce a configure.ac that doesn't
compile.

2002-07-07  Alexandre Duret-Lutz  <address@hidden>

        * lib/autoconf/specific.m4 (AC_CYGWIN, AC_EMXOS2, AC_MINGW32):
        Don't use AC_REQUIRE in AU_DEFUN.

Index: lib/autoconf/specific.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/specific.m4,v
retrieving revision 1.348
diff -u -r1.348 specific.m4
--- lib/autoconf/specific.m4    17 May 2002 07:09:12 -0000      1.348
+++ lib/autoconf/specific.m4    7 Jul 2002 13:26:04 -0000
@@ -360,7 +360,7 @@
 # Check for Cygwin.  This is a way to set the right value for
 # EXEEXT.
 AU_DEFUN([AC_CYGWIN],
-[AC_REQUIRE([AC_CANONICAL_HOST])[]dnl
+[AC_CANONICAL_HOST
 AC_DIAGNOSE([obsolete],
             [$0 is obsolete: use AC_CANONICAL_HOST and $host_os])dnl
 case $host_os in
@@ -375,7 +375,7 @@
 # Check for EMX on OS/2.  This is another way to set the right value
 # for EXEEXT.
 AU_DEFUN([AC_EMXOS2],
-[AC_REQUIRE([AC_CANONICAL_HOST])[]dnl
+[AC_CANONICAL_HOST
 AC_DIAGNOSE([obsolete],
             [$0 is obsolete: use AC_CANONICAL_HOST and $host_os])dnl
 case $host_os in
@@ -390,7 +390,7 @@
 # Check for mingw32.  This is another way to set the right value for
 # EXEEXT.
 AU_DEFUN([AC_MINGW32],
-[AC_REQUIRE([AC_CANONICAL_HOST])[]dnl
+[AC_CANONICAL_HOST
 AC_DIAGNOSE([obsolete],
             [$0 is obsolete: use AC_CANONICAL_HOST and $host_os])dnl
 case $host_os in

-- 
Alexandre Duret-Lutz