+AC_C_BIGENDIAN
+AC_C_CONST
+AC_C_INLINE
+AC_C_VOLATILE
+AC_C_RESTRICT
+
+AX_CXX_GCC_ABI_DEMANGLE
+
+AC_CHECK_LIB([rt], [clock_gettime],
+ [
+ RT_LIB="-lrt"
+ AC_SUBST(RT_LIB)
+ AC_DEFINE([HAVE_LIBRT], [ 1 ], [Have clock_gettime])
+ ],
+ [
+ AC_DEFINE([HAVE_LIBRT], [ 0 ], [Have clock_gettime])
+ ])
+
+AC_CHECK_LIB([m], [floor])
+