AS_IF([test "x$enable_64bit" != "xno"], [
AC_DEFINE([RISCV_ENABLE_64BIT],,[Define if 64-bit mode is supported])
])
+
+AC_ARG_ENABLE([commitlog], AS_HELP_STRING([--enable-commitlog], [Enable commit log generation]))
+AS_IF([test "x$enable_commitlog" = "xyes"], [
+ AC_DEFINE([RISCV_ENABLE_COMMITLOG],,[Enable commit log generation])
+])