1
# -*- buffer-read-only: t -*- vi: set ro:
2
# DO NOT EDIT! GENERATED AUTOMATICALLY!
3
# warn-on-use.m4 serial 2
4
dnl Copyright (C) 2010-2011 Free Software Foundation, Inc.
5
dnl This file is free software; the Free Software Foundation
6
dnl gives unlimited permission to copy and/or distribute it,
7
dnl with or without modifications, as long as this notice is preserved.
9
# gl_WARN_ON_USE_PREPARE(INCLUDES, NAMES)
10
# ---------------------------------------
11
# For each whitespace-separated element in the list of NAMES, define
12
# HAVE_RAW_DECL_name if the function has a declaration among INCLUDES
13
# even after being undefined as a macro.
15
# See warn-on-use.h for some hints on how to poison function names, as
16
# well as ideas on poisoning global variables and macros. NAMES may
17
# include global variables, but remember that only functions work with
18
# _GL_WARN_ON_USE. Typically, INCLUDES only needs to list a single
19
# header, but if the replacement header pulls in other headers because
20
# some systems declare functions in the wrong header, then INCLUDES
23
# If you assume C89, then it is generally safe to assume declarations
24
# for functions declared in that standard (such as gets) without
25
# needing gl_WARN_ON_USE_PREPARE.
26
AC_DEFUN([gl_WARN_ON_USE_PREPARE],
28
m4_foreach_w([gl_decl], [$2],
29
[AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])),
30
[Define to 1 if ]m4_defn([gl_decl])[ is declared even after
31
undefining macros.])])dnl
32
for gl_func in m4_flatten([$2]); do
33
AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl
34
AC_CACHE_CHECK([whether $gl_func is declared without a macro],
36
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1],
39
[AS_VAR_SET(gl_Symbol, [yes])], [AS_VAR_SET(gl_Symbol, [no])])])
40
AS_VAR_IF(gl_Symbol, [yes],
41
[AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1])
42
dnl shortcut - if the raw declaration exists, then set a cache
43
dnl variable to allow skipping any later AC_CHECK_DECL efforts
44
eval ac_cv_have_decl_$gl_func=yes])
45
AS_VAR_POPDEF([gl_Symbol])dnl