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1 # wchar_t.m4 serial 3 (gettext-0.18)
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2 dnl Copyright (C) 2002-2003, 2008-2010 Free Software Foundation, Inc.
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3 dnl This file is free software; the Free Software Foundation
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4 dnl gives unlimited permission to copy and/or distribute it,
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5 dnl with or without modifications, as long as this notice is preserved.
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6
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7 dnl From Bruno Haible.
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8 dnl Test whether <stddef.h> has the 'wchar_t' type.
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9 dnl Prerequisite: AC_PROG_CC
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10
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11 AC_DEFUN([gt_TYPE_WCHAR_T],
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12 [
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13 AC_CACHE_CHECK([for wchar_t], [gt_cv_c_wchar_t],
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14 [AC_TRY_COMPILE([#include <stddef.h>
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15 wchar_t foo = (wchar_t)'\0';], ,
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16 [gt_cv_c_wchar_t=yes], [gt_cv_c_wchar_t=no])])
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17 if test $gt_cv_c_wchar_t = yes; then
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18 AC_DEFINE([HAVE_WCHAR_T], [1], [Define if you have the 'wchar_t' type.])
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19 fi
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20 ])
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