Mercurial > gnulib
view m4/wcrtomb.m4 @ 40177:dcd889592b62
dtoastr,ftoastr,ldtoastr: port to c-strtod changes
Decouple these modules from c-strtod. Nowadays it’s reasonable to
assume the C99 signatures for strtod and strtold. Programs that
require stricter adherence to C99 should also use the strtod and
strtold modules as needed, and we no longer need the
HAVE_C99_STRTOLD macro.
* NEWS: Mention this.
* lib/ftoastr.c (STRTOF) [LENGTH == 3]: Assume strtold.
* m4/c-strtod.m4 (gl_C_STRTOLD): Do not define HAVE_C99_STRTOLD.
* modules/dtoastr, modules/ftoastr, modules/ldtoastr:
(Files): Remove m4/c-strtod.m4.
(configure.ac): Do not require gl_C99_STRTOLD, which no longer
exists.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 02 Feb 2019 13:01:55 -0800 |
parents | 9e646f080d9e |
children |
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# wcrtomb.m4 serial 14 dnl Copyright (C) 2008-2019 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_WCRTOMB], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_REQUIRE([AC_TYPE_MBSTATE_T]) gl_MBSTATE_T_BROKEN AC_CHECK_FUNCS_ONCE([wcrtomb]) if test $ac_cv_func_wcrtomb = no; then HAVE_WCRTOMB=0 AC_CHECK_DECLS([wcrtomb],,, [[ /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before <wchar.h>. BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included before <wchar.h>. */ #include <stddef.h> #include <stdio.h> #include <time.h> #include <wchar.h> ]]) if test $ac_cv_have_decl_wcrtomb = yes; then dnl On Minix 3.1.8, the system's <wchar.h> declares wcrtomb() although dnl it does not have the function. Avoid a collision with gnulib's dnl replacement. REPLACE_WCRTOMB=1 fi else if test $REPLACE_MBSTATE_T = 1; then REPLACE_WCRTOMB=1 fi if test $REPLACE_WCRTOMB = 0; then dnl On Android 4.3, wcrtomb produces wrong characters in the C locale. dnl On AIX 4.3, OSF/1 5.1 and Solaris <= 11.3, wcrtomb (NULL, 0, NULL) dnl sometimes returns 0 instead of 1. AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_FR]) AC_REQUIRE([gt_LOCALE_FR_UTF8]) AC_REQUIRE([gt_LOCALE_JA]) AC_REQUIRE([gt_LOCALE_ZH_CN]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether wcrtomb works in the C locale], [gl_cv_func_wcrtomb_works], [AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include <string.h> #include <stdlib.h> /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before <wchar.h>. BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included before <wchar.h>. */ #include <stddef.h> #include <stdio.h> #include <wchar.h> int main () { mbstate_t state; char out[64]; int count; memset (&state, 0, sizeof (state)); out[0] = 'x'; count = wcrtomb (out, L'a', &state); return !(count == 1 && out[0] == 'a'); }]])], [gl_cv_func_wcrtomb_works=yes], [gl_cv_func_wcrtomb_works=no], [case "$host_os" in # Guess no on Android. linux*-android*) gl_cv_func_wcrtomb_works="guessing no";; # Guess yes otherwise. *) gl_cv_func_wcrtomb_works="guessing yes";; esac ]) ]) case "$gl_cv_func_wcrtomb_works" in *yes) ;; *) REPLACE_WCRTOMB=1 ;; esac fi if test $REPLACE_WCRTOMB = 0; then AC_CACHE_CHECK([whether wcrtomb return value is correct], [gl_cv_func_wcrtomb_retval], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on AIX 4, OSF/1 and Solaris. aix4* | osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;; # Guess yes on native Windows. mingw*) gl_cv_func_wcrtomb_retval="guessing yes" ;; # Guess yes otherwise. *) gl_cv_func_wcrtomb_retval="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include <locale.h> #include <string.h> /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before <wchar.h>. BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included before <wchar.h>. */ #include <stddef.h> #include <stdio.h> #include <time.h> #include <wchar.h> int main () { int result = 0; if (setlocale (LC_ALL, "$LOCALE_FR") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 1; } if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 2; } if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 4; } if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 8; } return result; }]])], [gl_cv_func_wcrtomb_retval=yes], [gl_cv_func_wcrtomb_retval=no], [:]) fi ]) case "$gl_cv_func_wcrtomb_retval" in *yes) ;; *) REPLACE_WCRTOMB=1 ;; esac fi fi ]) # Prerequisites of lib/wcrtomb.c. AC_DEFUN([gl_PREREQ_WCRTOMB], [ : ])