FYI: Fix AU_ALIAS (Was: autoconf/152: Broken backwards compatibility for AC_HAVE_FUNCS)

[Akim Demaille]

| If one is trying to use some ancient configure.in files,
| the backwards compatbility code fails to substitute the
| arguments of the function. 
| 
| If one uses AC_HAVE_FUNCS for instance, the shell script
| simply says:
| 
| for ac_func in
| do
| 
| Without the substituted functions. 
| >How-To-Repeat:
| Here is a sample configure.in - it works if AC_CHECK_FUNCS is used instead of 
AC_HAVE_FUNCS.
| 
| C_INIT(configure.in, 1.0, address@hidden)
| AC_PROG_CC
| dnl AC_CHECK_FUNCS(printf scanf)
| AC_HAVE_FUNCS(printf scanf)
| AC_OUTPUT(Makefile)

Thanks for the report.  It's a big bug indeed, but I just smashed it
:)


Index: ChangeLog
from  Akim Demaille  <address@hidden>
        * acgeneral.m4 (AU_ALIAS): Don't forget to pass the arguments to
        the new macro...
        Reported by Ezra Peisach.
        * tests/semantics.m4 (AC_HAVE_FUNCS): New test.

2000-11-03  Akim Demaille  <address@hidden>

Index: THANKS
===================================================================
RCS file: /cvs/autoconf/THANKS,v
retrieving revision 1.42
diff -u -u -r1.42 THANKS
--- THANKS 2000/11/03 09:22:15 1.42
+++ THANKS 2000/11/03 11:33:12
@@ -36,6 +36,7 @@
 Erez Zadok             address@hidden
 Eric Backus            address@hidden
 Eric Mumpower          address@hidden
+Ezra Peisach           address@hidden
 Felix Lee              address@hidden
 Franc,ois Pinard       address@hidden
 Gary V. Vaughan                address@hidden
Index: acgeneral.m4
===================================================================
RCS file: /cvs/autoconf/acgeneral.m4,v
retrieving revision 1.614
diff -u -u -r1.614 acgeneral.m4
--- acgeneral.m4 2000/11/03 11:14:48 1.614
+++ acgeneral.m4 2000/11/03 11:33:13
@@ -328,7 +328,7 @@
 # Do not use `defn' since then autoupdate would replace an old macro
 # call with the new macro body instead of the new macro call.
 define([AU_ALIAS],
-[AU_DEFUN([$1], [$2])])
+[AU_DEFUN([$1], [$2($][@)])])
 
 
 
Index: tests/semantics.at
===================================================================
RCS file: /cvs/autoconf/tests/semantics.at,v
retrieving revision 1.3
diff -u -u -r1.3 semantics.at
--- tests/semantics.at 2000/11/01 19:57:55 1.3
+++ tests/semantics.at 2000/11/03 11:33:13
@@ -51,7 +51,19 @@
 # --------------
 # Check that it performs the correct actions:
 # Must define HAVE_EXIT, but not HAVE_AUTOCONF_TIXE
-AT_CHECK_MACRO(AC_CHECK_FUNCS,
+AT_CHECK_MACRO([AC_CHECK_FUNCS],
+[AC_CHECK_FUNCS(exit autoconf_tixe)],
+[AT_CHECK_DEFINES(
+[/* #undef HAVE_AUTOCONF_TIXE */
+#define HAVE_EXIT 1
+])])
+
+
+# AC_HAVE_FUNCS
+# -------------
+# This macro is an obsolete version of AC_CHECK_FUNCS.  Running this
+# test allows to check that AU_ALIAS'ed macros work properly.
+AT_CHECK_MACRO([AC_HAVE_FUNCS],
 [AC_CHECK_FUNCS(exit autoconf_tixe)],
 [AT_CHECK_DEFINES(
 [/* #undef HAVE_AUTOCONF_TIXE */