2 dnl Copyright (C) 2001-2002, 2006 Free Software Foundation, Inc.
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.
9 AC_DEFUN([bh_C_SIGNED],
11 AC_CACHE_CHECK([for signed], bh_cv_c_signed,
12 [AC_TRY_COMPILE(, [signed char x; return !x;],
13 bh_cv_c_signed=yes, bh_cv_c_signed=no)])
14 if test $bh_cv_c_signed = no; then
16 [Define to empty if the C compiler doesn't support this keyword.])