projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 9c9d63b1 PM |
1 | # wint_t.m4 serial 10 |
| 2 | dnl Copyright (C) 2003, 2007-2021 Free Software Foundation, Inc. | |
| 8690e634 JK |
3 | dnl This file is free software; the Free Software Foundation |
| 4 | dnl gives unlimited permission to copy and/or distribute it, | |
| 5 | dnl with or without modifications, as long as this notice is preserved. | |
| 6 | ||
| 7 | dnl From Bruno Haible. | |
| c0c3707f CB |
8 | dnl Test whether <wchar.h> has the 'wint_t' type and whether gnulib's |
| 9 | dnl <wchar.h> or <wctype.h> would, if present, override 'wint_t'. | |
| 8690e634 JK |
10 | dnl Prerequisite: AC_PROG_CC |
| 11 | ||
| 12 | AC_DEFUN([gt_TYPE_WINT_T], | |
| 13 | [ | |
| 14 | AC_CACHE_CHECK([for wint_t], [gt_cv_c_wint_t], | |
| 15 | [AC_COMPILE_IFELSE( | |
| 16 | [AC_LANG_PROGRAM( | |
| 9c9d63b1 | 17 | [[#include <wchar.h> |
| 8690e634 JK |
18 | wint_t foo = (wchar_t)'\0';]], |
| 19 | [[]])], | |
| 20 | [gt_cv_c_wint_t=yes], | |
| 21 | [gt_cv_c_wint_t=no])]) | |
| 22 | if test $gt_cv_c_wint_t = yes; then | |
| 23 | AC_DEFINE([HAVE_WINT_T], [1], [Define if you have the 'wint_t' type.]) | |
| c0c3707f CB |
24 | |
| 25 | dnl Determine whether gnulib's <wchar.h> or <wctype.h> would, if present, | |
| 26 | dnl override 'wint_t'. | |
| 9c9d63b1 PM |
27 | AC_CACHE_CHECK([whether wint_t is large enough], |
| 28 | [gl_cv_type_wint_t_large_enough], | |
| c0c3707f | 29 | [AC_COMPILE_IFELSE( |
| 9c9d63b1 PM |
30 | [AC_LANG_PROGRAM( |
| 31 | [[#include <wchar.h> | |
| 32 | int verify[sizeof (wint_t) < sizeof (int) ? -1 : 1]; | |
| 698be2d8 | 33 | ]])], |
| 9c9d63b1 PM |
34 | [gl_cv_type_wint_t_large_enough=yes], |
| 35 | [gl_cv_type_wint_t_large_enough=no])]) | |
| 36 | if test $gl_cv_type_wint_t_large_enough = no; then | |
| c0c3707f CB |
37 | GNULIB_OVERRIDES_WINT_T=1 |
| 38 | else | |
| 39 | GNULIB_OVERRIDES_WINT_T=0 | |
| 40 | fi | |
| 41 | else | |
| 42 | GNULIB_OVERRIDES_WINT_T=0 | |
| 43 | fi | |
| 44 | AC_SUBST([GNULIB_OVERRIDES_WINT_T]) | |
| 45 | ]) | |
| 46 | ||
| 47 | dnl Prerequisites of the 'wint_t' override. | |
| 48 | AC_DEFUN([gl_TYPE_WINT_T_PREREQ], | |
| 49 | [ | |
| 50 | AC_CHECK_HEADERS_ONCE([crtdefs.h]) | |
| 51 | if test $ac_cv_header_crtdefs_h = yes; then | |
| 52 | HAVE_CRTDEFS_H=1 | |
| 53 | else | |
| 54 | HAVE_CRTDEFS_H=0 | |
| 8690e634 | 55 | fi |
| c0c3707f | 56 | AC_SUBST([HAVE_CRTDEFS_H]) |
| 8690e634 | 57 | ]) |