25 lines
845 B
Text
25 lines
845 B
Text
# wmemchr.m4 serial 5
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dnl Copyright (C) 2011-2022 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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AC_DEFUN([gl_FUNC_WMEMCHR],
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[
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AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
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dnl We cannot use AC_CHECK_FUNCS here, because the MSVC 9 header files
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dnl provide this function as an inline function definition.
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AC_CACHE_CHECK([for wmemchr], [gl_cv_func_wmemchr],
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[AC_LINK_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <wchar.h>
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]],
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[[return ! wmemchr ((const wchar_t *) 0, (wchar_t) ' ', 0);]])
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],
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[gl_cv_func_wmemchr=yes],
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[gl_cv_func_wmemchr=no])
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])
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if test $gl_cv_func_wmemchr = no; then
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HAVE_WMEMCHR=0
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fi
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])
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