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changeset 12900:ab89e2ae89b9

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warn-on-use: work with old autoconf Before autoconf documented the AS_VAR_* interfaces, it used to require the user to pre-expand the pushed macro name. Newer autoconf can see through macros, but this is one case where breaking the rule of thumb and underquoting does not hurt. * m4/warn-on-use.m4 (gl_WARN_ON_USE_PREPARE): Accomodate older AS_VAR semantics of autoconf 2.60. Reported by Bruno Haible. Signed-off-by: Eric Blake <eblake@redhat.com>
author Eric Blake <eblake@redhat.com>
date Tue, 23 Feb 2010 10:57:38 -0700
parents 2481f907ec49
children f50d0a06e764
files ChangeLog m4/warn-on-use.m4
diffstat 2 files changed, 9 insertions(+), 4 deletions(-) [+]
line wrap: on
line diff
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2010-02-23  Eric Blake  <eblake@redhat.com>
 
+	warn-on-use: work with old autoconf
+	* m4/warn-on-use.m4 (gl_WARN_ON_USE_PREPARE): Accomodate older
+	AS_VAR semantics of autoconf 2.60.
+	Reported by Bruno Haible.
+
 	bootstrap: improve some comments
 	* build-aux/bootstrap: Drop unneeded emacs hint.  Add some
 	clarification comments.
--- a/m4/warn-on-use.m4
+++ b/m4/warn-on-use.m4
@@ -1,4 +1,4 @@
-# warn-on-use.m4 serial 1
+# warn-on-use.m4 serial 2
 dnl Copyright (C) 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -30,12 +30,12 @@
   for gl_func in m4_flatten([$2]); do
     AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl
     AC_CACHE_CHECK([whether $gl_func is declared without a macro],
-      [gl_Symbol],
+      gl_Symbol,
       [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1],
 [@%:@undef $gl_func
   (void) $gl_func;])],
-        [AS_VAR_SET([gl_Symbol], [yes])], [AS_VAR_SET([gl_Symbol], [no])])])
-     AS_VAR_IF([gl_Symbol], [yes],
+        [AS_VAR_SET(gl_Symbol, [yes])], [AS_VAR_SET(gl_Symbol, [no])])])
+     AS_VAR_IF(gl_Symbol, [yes],
        [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1])
        dnl shortcut - if the raw declaration exists, then set a cache
        dnl variable to allow skipping any later AC_CHECK_DECL efforts