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304269717c
These files have been created by running ./build-aux/bootstrap with Gnulib as at commit 5e0faf88718e9329e44c773039166c7dbf3ca57c (with a date stamp of Fri May 19 19:27:51 2017 +0200), Autoconf 2.69, Automake 1.15 and Gettext 0.19.8.1.
75 lines
2.3 KiB
Plaintext
75 lines
2.3 KiB
Plaintext
# wint_t.m4 serial 7
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dnl Copyright (C) 2003, 2007-2017 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl From Bruno Haible.
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dnl Test whether <wchar.h> has the 'wint_t' type and whether gnulib's
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dnl <wchar.h> or <wctype.h> would, if present, override 'wint_t'.
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dnl Prerequisite: AC_PROG_CC
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AC_DEFUN([gt_TYPE_WINT_T],
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[
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AC_CACHE_CHECK([for wint_t], [gt_cv_c_wint_t],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[
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/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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<wchar.h>.
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BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
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before <wchar.h>. */
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#include <stddef.h>
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#include <stdio.h>
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#include <time.h>
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#include <wchar.h>
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wint_t foo = (wchar_t)'\0';]],
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[[]])],
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[gt_cv_c_wint_t=yes],
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[gt_cv_c_wint_t=no])])
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if test $gt_cv_c_wint_t = yes; then
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AC_DEFINE([HAVE_WINT_T], [1], [Define if you have the 'wint_t' type.])
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dnl Determine whether gnulib's <wchar.h> or <wctype.h> would, if present,
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dnl override 'wint_t'.
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AC_CACHE_CHECK([whether wint_t is too small],
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[gl_cv_type_wint_t_too_small],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([[
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/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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<wchar.h>.
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BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
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included before <wchar.h>. */
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#if !(defined __GLIBC__ && !defined __UCLIBC__)
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# include <stddef.h>
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# include <stdio.h>
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# include <time.h>
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#endif
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#include <wchar.h>
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int verify[sizeof (wint_t) < sizeof (int) ? -1 : 1];
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]])],
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[gl_cv_type_wint_t_too_small=no],
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[gl_cv_type_wint_t_too_small=yes])])
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if test $gl_cv_type_wint_t_too_small = yes; then
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GNULIB_OVERRIDES_WINT_T=1
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else
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GNULIB_OVERRIDES_WINT_T=0
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fi
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else
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GNULIB_OVERRIDES_WINT_T=0
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fi
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AC_SUBST([GNULIB_OVERRIDES_WINT_T])
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])
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dnl Prerequisites of the 'wint_t' override.
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AC_DEFUN([gl_TYPE_WINT_T_PREREQ],
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[
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AC_CHECK_HEADERS_ONCE([crtdefs.h])
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if test $ac_cv_header_crtdefs_h = yes; then
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HAVE_CRTDEFS_H=1
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else
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HAVE_CRTDEFS_H=0
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fi
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AC_SUBST([HAVE_CRTDEFS_H])
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])
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