Mercurial > gnulib
view m4/wcwidth.m4 @ 39194:a84ae461a2f6
Add cross-compilation results for GNU/Hurd.
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* m4/wcwidth.m4: Likewise.
author | Samuel Thibault <samuel.thibault@gnu.org> |
---|---|
date | Fri, 29 Dec 2017 17:30:07 +0100 |
parents | 624594b8df0f |
children | 10eb9086bea0 |
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# wcwidth.m4 serial 26 dnl Copyright (C) 2006-2017 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_WCWIDTH], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles dnl Persuade glibc <wchar.h> to declare wcwidth(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([gt_TYPE_WCHAR_T]) AC_REQUIRE([gt_TYPE_WINT_T]) AC_CHECK_HEADERS_ONCE([wchar.h]) AC_CHECK_FUNCS_ONCE([wcwidth]) AC_CHECK_DECLS([wcwidth], [], [], [[ /* AIX 3.2.5 declares wcwidth in <string.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> ]]) if test $ac_cv_have_decl_wcwidth != yes; then HAVE_DECL_WCWIDTH=0 fi if test $ac_cv_func_wcwidth != yes; then AC_CACHE_CHECK([whether wcwidth is a macro], [gl_cv_func_wcwidth_macro], [AC_EGREP_CPP([wchar_header_defines_wcwidth], [ #include <wchar.h> #ifdef wcwidth wchar_header_defines_wcwidth #endif], [gl_cv_func_wcwidth_macro=yes], [gl_cv_func_wcwidth_macro=no]) ]) fi if test $ac_cv_func_wcwidth = yes || test $gl_cv_func_wcwidth_macro = yes; then HAVE_WCWIDTH=1 dnl On Mac OS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1. dnl On OpenBSD 5.0, wcwidth(0x05B0) (HEBREW POINT SHEVA) returns 1. dnl On OSF/1 5.1, wcwidth(0x200B) (ZERO WIDTH SPACE) returns 1. dnl On OpenBSD 5.8, wcwidth(0xFF1A) (FULLWIDTH COLON) returns 0. dnl This leads to bugs in 'ls' (coreutils). AC_CACHE_CHECK([whether wcwidth works reasonably in UTF-8 locales], [gl_cv_func_wcwidth_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include <locale.h> /* AIX 3.2.5 declares wcwidth in <string.h>. */ #include <string.h> /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before <wchar.h>. BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included before <wchar.h>. */ #include <stddef.h> #include <stdio.h> #include <time.h> #include <wchar.h> #if !HAVE_DECL_WCWIDTH extern # ifdef __cplusplus "C" # endif int wcwidth (int); #endif int main () { int result = 0; if (setlocale (LC_ALL, "fr_FR.UTF-8") != NULL) { if (wcwidth (0x0301) > 0) result |= 1; if (wcwidth (0x05B0) > 0) result |= 2; if (wcwidth (0x200B) > 0) result |= 4; if (wcwidth (0xFF1A) == 0) result |= 8; } return result; }]])], [gl_cv_func_wcwidth_works=yes], [gl_cv_func_wcwidth_works=no], [ changequote(,)dnl case "$host_os" in # Guess yes on glibc and AIX 7 systems. *-gnu* | gnu* | aix[7-9]*) gl_cv_func_wcwidth_works="guessing yes";; *) gl_cv_func_wcwidth_works="guessing no";; esac changequote([,])dnl ]) ]) case "$gl_cv_func_wcwidth_works" in *yes) ;; *no) REPLACE_WCWIDTH=1 ;; esac else HAVE_WCWIDTH=0 fi dnl We don't substitute HAVE_WCWIDTH. We assume that if the system does not dnl have the wcwidth function, then it does not declare it. ])