projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| c0c3707f CB |
1 | # wint_t.m4 serial 7 |
| 2 | dnl Copyright (C) 2003, 2007-2019 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( | |
| 17 | [[ | |
| 18 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
| 19 | <wchar.h>. | |
| 20 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included | |
| 21 | before <wchar.h>. */ | |
| 22 | #include <stddef.h> | |
| 23 | #include <stdio.h> | |
| 24 | #include <time.h> | |
| 25 | #include <wchar.h> | |
| 26 | wint_t foo = (wchar_t)'\0';]], | |
| 27 | [[]])], | |
| 28 | [gt_cv_c_wint_t=yes], | |
| 29 | [gt_cv_c_wint_t=no])]) | |
| 30 | if test $gt_cv_c_wint_t = yes; then | |
| 31 | AC_DEFINE([HAVE_WINT_T], [1], [Define if you have the 'wint_t' type.]) | |
| c0c3707f CB |
32 | |
| 33 | dnl Determine whether gnulib's <wchar.h> or <wctype.h> would, if present, | |
| 34 | dnl override 'wint_t'. | |
| 35 | AC_CACHE_CHECK([whether wint_t is too small], | |
| 36 | [gl_cv_type_wint_t_too_small], | |
| 37 | [AC_COMPILE_IFELSE( | |
| 38 | [AC_LANG_PROGRAM([[ | |
| 39 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
| 40 | <wchar.h>. | |
| 41 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
| 42 | included before <wchar.h>. */ | |
| 43 | #if !(defined __GLIBC__ && !defined __UCLIBC__) | |
| 44 | # include <stddef.h> | |
| 45 | # include <stdio.h> | |
| 46 | # include <time.h> | |
| 47 | #endif | |
| 48 | #include <wchar.h> | |
| 49 | int verify[sizeof (wint_t) < sizeof (int) ? -1 : 1]; | |
| 50 | ]])], | |
| 51 | [gl_cv_type_wint_t_too_small=no], | |
| 52 | [gl_cv_type_wint_t_too_small=yes])]) | |
| 53 | if test $gl_cv_type_wint_t_too_small = yes; then | |
| 54 | GNULIB_OVERRIDES_WINT_T=1 | |
| 55 | else | |
| 56 | GNULIB_OVERRIDES_WINT_T=0 | |
| 57 | fi | |
| 58 | else | |
| 59 | GNULIB_OVERRIDES_WINT_T=0 | |
| 60 | fi | |
| 61 | AC_SUBST([GNULIB_OVERRIDES_WINT_T]) | |
| 62 | ]) | |
| 63 | ||
| 64 | dnl Prerequisites of the 'wint_t' override. | |
| 65 | AC_DEFUN([gl_TYPE_WINT_T_PREREQ], | |
| 66 | [ | |
| 67 | AC_CHECK_HEADERS_ONCE([crtdefs.h]) | |
| 68 | if test $ac_cv_header_crtdefs_h = yes; then | |
| 69 | HAVE_CRTDEFS_H=1 | |
| 70 | else | |
| 71 | HAVE_CRTDEFS_H=0 | |
| 8690e634 | 72 | fi |
| c0c3707f | 73 | AC_SUBST([HAVE_CRTDEFS_H]) |
| 8690e634 | 74 | ]) |