diff options
Diffstat (limited to 'gnulib-m4/wcwidth.m4')
| -rw-r--r-- | gnulib-m4/wcwidth.m4 | 47 |
1 files changed, 27 insertions, 20 deletions
diff --git a/gnulib-m4/wcwidth.m4 b/gnulib-m4/wcwidth.m4 index acceba5..b11dc8d 100644 --- a/gnulib-m4/wcwidth.m4 +++ b/gnulib-m4/wcwidth.m4 @@ -1,5 +1,5 @@ -# wcwidth.m4 serial 16 -dnl Copyright (C) 2006-2010 Free Software Foundation, Inc. +# wcwidth.m4 serial 23 +dnl Copyright (C) 2006-2015 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. @@ -18,7 +18,7 @@ AC_DEFUN([gl_FUNC_WCWIDTH], AC_CHECK_HEADERS_ONCE([wchar.h]) AC_CHECK_FUNCS_ONCE([wcwidth]) - AC_CHECK_DECLS([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 @@ -29,19 +29,22 @@ AC_DEFUN([gl_FUNC_WCWIDTH], #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 $ac_cv_func_wcwidth = yes; then - dnl On MacOS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1. + HAVE_WCWIDTH=1 + dnl On Mac OS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1. + dnl On OpenBSD 5.0, wcwidth(0x05B0) (HEBREW POINT SHEVA) returns 1. dnl On OSF/1 5.1, wcwidth(0x200B) (ZERO WIDTH SPACE) returns 1. dnl This leads to bugs in 'ls' (coreutils). AC_CACHE_CHECK([whether wcwidth works reasonably in UTF-8 locales], [gl_cv_func_wcwidth_works], [ - AC_TRY_RUN([ + AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ #include <locale.h> /* AIX 3.2.5 declares wcwidth in <string.h>. */ #include <string.h> @@ -62,17 +65,26 @@ int wcwidth (int); #endif int main () { + int result = 0; if (setlocale (LC_ALL, "fr_FR.UTF-8") != NULL) - if (wcwidth (0x0301) > 0 || wcwidth (0x200B) > 0) - return 1; - return 0; -}], [gl_cv_func_wcwidth_works=yes], [gl_cv_func_wcwidth_works=no], + { + if (wcwidth (0x0301) > 0) + result |= 1; + if (wcwidth (0x05B0) > 0) + result |= 2; + if (wcwidth (0x200B) > 0) + result |= 4; + } + return result; +}]])], + [gl_cv_func_wcwidth_works=yes], + [gl_cv_func_wcwidth_works=no], [ changequote(,)dnl case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_wcwidth_works="guessing yes";; - *) gl_cv_func_wcwidth_works="guessing no";; + # Guess yes on glibc and AIX 7 systems. + *-gnu* | aix[7-9]*) gl_cv_func_wcwidth_works="guessing yes";; + *) gl_cv_func_wcwidth_works="guessing no";; esac changequote([,])dnl ]) @@ -81,13 +93,8 @@ changequote([,])dnl *yes) ;; *no) REPLACE_WCWIDTH=1 ;; esac - fi - if test $ac_cv_func_wcwidth != yes || test $REPLACE_WCWIDTH = 1; then - AC_LIBOBJ([wcwidth]) - fi - if test $ac_cv_func_wcwidth != yes || test $REPLACE_WCWIDTH = 1 \ - || test $HAVE_DECL_WCWIDTH = 0; then - gl_REPLACE_WCHAR_H + 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. |