diff options
Diffstat (limited to 'gnulib-m4/wint_t.m4')
| -rw-r--r-- | gnulib-m4/wint_t.m4 | 48 |
1 files changed, 45 insertions, 3 deletions
diff --git a/gnulib-m4/wint_t.m4 b/gnulib-m4/wint_t.m4 index 8ff2a5b5..d30b8bcf 100644 --- a/gnulib-m4/wint_t.m4 +++ b/gnulib-m4/wint_t.m4 @@ -1,11 +1,12 @@ -# wint_t.m4 serial 5 (gettext-0.18.2) -dnl Copyright (C) 2003, 2007-2016 Free Software Foundation, Inc. +# wint_t.m4 serial 7 +dnl Copyright (C) 2003, 2007-2017 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. dnl From Bruno Haible. -dnl Test whether <wchar.h> has the 'wint_t' type. +dnl Test whether <wchar.h> has the 'wint_t' type and whether gnulib's +dnl <wchar.h> or <wctype.h> would, if present, override 'wint_t'. dnl Prerequisite: AC_PROG_CC AC_DEFUN([gt_TYPE_WINT_T], @@ -28,5 +29,46 @@ AC_DEFUN([gt_TYPE_WINT_T], [gt_cv_c_wint_t=no])]) if test $gt_cv_c_wint_t = yes; then AC_DEFINE([HAVE_WINT_T], [1], [Define if you have the 'wint_t' type.]) + + dnl Determine whether gnulib's <wchar.h> or <wctype.h> would, if present, + dnl override 'wint_t'. + AC_CACHE_CHECK([whether wint_t is too small], + [gl_cv_type_wint_t_too_small], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[ +/* 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>. */ +#if !(defined __GLIBC__ && !defined __UCLIBC__) +# include <stddef.h> +# include <stdio.h> +# include <time.h> +#endif +#include <wchar.h> + int verify[sizeof (wint_t) < sizeof (int) ? -1 : 1]; + ]])], + [gl_cv_type_wint_t_too_small=no], + [gl_cv_type_wint_t_too_small=yes])]) + if test $gl_cv_type_wint_t_too_small = yes; then + GNULIB_OVERRIDES_WINT_T=1 + else + GNULIB_OVERRIDES_WINT_T=0 + fi + else + GNULIB_OVERRIDES_WINT_T=0 + fi + AC_SUBST([GNULIB_OVERRIDES_WINT_T]) +]) + +dnl Prerequisites of the 'wint_t' override. +AC_DEFUN([gl_TYPE_WINT_T_PREREQ], +[ + AC_CHECK_HEADERS_ONCE([crtdefs.h]) + if test $ac_cv_header_crtdefs_h = yes; then + HAVE_CRTDEFS_H=1 + else + HAVE_CRTDEFS_H=0 fi + AC_SUBST([HAVE_CRTDEFS_H]) ]) |