+AC_CACHE_CHECK(for struct exception, emacs_cv_struct_exception,
+AC_TRY_COMPILE([#include <math.h>],
+[static struct exception x; x.arg1 = x.arg2 = x.retval; x.name = ""; x.type = 1;],
+ emacs_cv_struct_exception=yes, emacs_cv_struct_exception=no))
+HAVE_EXCEPTION=$emacs_cv_struct_exception
+if test $emacs_cv_struct_exception != yes; then
+ AC_DEFINE(NO_MATHERR)
+fi
+