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- dnl Copyright (C) 2010-2012 Free Software Foundation, Inc.
- dnl This file is free software; the Free Software Foundation
- dnl gives unlimited permission to copy and/or distribute it,
- dnl with or without modifications, as long as this notice is preserved.
- AC_DEFUN([gl_WARN_ON_USE_PREPARE],
- [
- m4_foreach_w([gl_decl], [$2],
- [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])),
- [Define to 1 if ]m4_defn([gl_decl])[ is declared even after
- undefining macros.])])dnl
- dnl FIXME: gl_Symbol must be used unquoted until we can assume
- dnl autoconf 2.64 or newer.
- 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,
- [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1],
- [@%:@undef $gl_func
- (void) $gl_func;])],
- [AS_VAR_SET(gl_Symbol, [yes])], [AS_VAR_SET(gl_Symbol, [no])])])
- AS_VAR_IF(gl_Symbol, [yes],
- [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$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
- eval ac_cv_have_decl_$gl_func=yes])
- AS_VAR_POPDEF([gl_Symbol])dnl
- done
- ])
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