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AC_DEFUN([AC_CHECK_DEFINE],[
AS_VAR_PUSHDEF([ac_var],[ac_cv_defined_$1_$2])dnl
AC_CACHE_CHECK([for $1 in $2], ac_var,
AC_TRY_COMPILE([#include <$2>],[
#ifdef $1
int ok;
#else
choke me
#endif
],AS_VAR_SET(ac_var, yes),AS_VAR_SET(ac_var, no)))
AS_IF([test AS_VAR_GET(ac_var) != "no"], [$3], [$4])dnl
AS_VAR_POPDEF([ac_var])dnl
])
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