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_Noreturn: GCC 4.7 does not support [[noreturn]] in C++11 mode * lib/_Noreturn.h, m4/gnulib-common.m4: Don't use [[noreturn]] before GCC 4.8.
author Akim Demaille <akim.demaille@gmail.com>
date Sun, 17 Mar 2019 19:27:20 +0100
parents dcd889592b62
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # c-strtod.m4 serial 18
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2
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3 # Copyright (C) 2004-2006, 2009-2019 Free Software Foundation, Inc.
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4 # This file is free software; the Free Software Foundation
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5 # gives unlimited permission to copy and/or distribute it,
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6 # with or without modifications, as long as this notice is preserved.
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7
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8 # Written by Paul Eggert.
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9
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10 dnl Prerequisites of lib/c-strtod.c.
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11 AC_DEFUN([gl_C_STRTOD],
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12 [
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13 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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14 AC_REQUIRE([gt_FUNC_USELOCALE])
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15
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16 AC_CHECK_HEADERS_ONCE([xlocale.h])
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17 dnl We can't use AC_CHECK_FUNC here, because strtod_l() is defined as a
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18 dnl static inline function when compiling for Android 7.1 or older.
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19 AC_CACHE_CHECK([for strtod_l], [gl_cv_func_strtod_l],
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20 [AC_LINK_IFELSE(
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21 [AC_LANG_PROGRAM(
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22 [[#include <stdlib.h>
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23 #include <locale.h>
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24 #if HAVE_XLOCALE_H
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25 # include <xlocale.h>
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26 #endif
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27 locale_t loc;
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28 ]],
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29 [[char *end;
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30 return strtod_l("0",&end,loc) < 0.0;
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31 ]])
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32 ],
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33 [gl_cv_func_strtod_l=yes],
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34 [gl_cv_func_strtod_l=no])
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35 ])
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36 if test $gl_cv_func_strtod_l = yes; then
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37 HAVE_STRTOD_L=1
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38 else
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39 HAVE_STRTOD_L=0
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40 fi
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41 AC_DEFINE_UNQUOTED([HAVE_STRTOD_L], [$HAVE_STRTOD_L],
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42 [Define to 1 if the system has the 'strtod_l' function.])
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43 ])
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44
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45 dnl Prerequisites of lib/c-strtold.c.
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46 AC_DEFUN([gl_C_STRTOLD],
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47 [
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48 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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49 AC_REQUIRE([gt_FUNC_USELOCALE])
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50 AC_CHECK_FUNCS([strtold_l])
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51 ])