Mercurial > gnulib
view m4/tanf.m4 @ 40198:5a34193cbc07
long-options: add parse_gnu_standard_options_only
Discussed in https://bugs.gnu.org/33468 .
* lib/long-options.c (parse_long_options): Use EXIT_SUCCESS instead
of 0.
(parse_gnu_standard_options_only): Add function to
process the GNU default options --help and --version and fail for any other
unknown long or short option. See
https://gnu.org/prep/standards/html_node/Command_002dLine-Interfaces.html .
* lib/long-options.h (parse_gnu_standard_options_only): Declare it.
* modules/long-options (depends-on): Add stdbool, exitfail.
* top/maint.mk (sc_prohibit_long_options_without_use): Update
syntax-check rule, add new function name.
author | Bernhard Voelker <mail@bernhard-voelker.de> |
---|---|
date | Thu, 29 Nov 2018 09:06:26 +0100 |
parents | b06060465f09 |
children |
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# tanf.m4 serial 3 dnl Copyright (C) 2011-2019 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_FUNC_TANF], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_FUNC_TAN]) dnl Persuade glibc <math.h> to declare tanf(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl Test whether tanf() exists. Assume that tanf(), if it exists, is dnl defined in the same library as tan(). save_LIBS="$LIBS" LIBS="$LIBS $TAN_LIBM" AC_CHECK_FUNCS([tanf]) LIBS="$save_LIBS" if test $ac_cv_func_tanf = yes; then TANF_LIBM="$TAN_LIBM" else HAVE_TANF=0 dnl If the function is declared but does not appear to exist, it may be dnl defined as an inline function. In order to avoid a conflict, we have dnl to define rpl_tanf, not tanf. AC_CHECK_DECLS([tanf], [REPLACE_TANF=1], , [[#include <math.h>]]) TANF_LIBM="$TAN_LIBM" fi AC_SUBST([TANF_LIBM]) ])