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Annotation of embedaddon/libiconv/srcm4/wint_t.m4, revision 1.1.1.3

1.1.1.3 ! misho       1: # wint_t.m4 serial 7
        !             2: dnl Copyright (C) 2003, 2007-2019 Free Software Foundation, Inc.
1.1       misho       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.
1.1.1.3 ! misho       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'.
1.1       misho      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],
1.1.1.2   misho      15:     [AC_COMPILE_IFELSE(
                     16:        [AC_LANG_PROGRAM(
                     17:           [[
1.1       misho      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>
1.1.1.2   misho      26:             wint_t foo = (wchar_t)'\0';]],
                     27:           [[]])],
                     28:        [gt_cv_c_wint_t=yes],
                     29:        [gt_cv_c_wint_t=no])])
1.1       misho      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.])
1.1.1.3 ! misho      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
1.1       misho      72:   fi
1.1.1.3 ! misho      73:   AC_SUBST([HAVE_CRTDEFS_H])
1.1       misho      74: ])