Mercurial > hg > octave-nkf > gnulib-hg
changeset 12900:ab89e2ae89b9
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