Fix out of tree builds

Author: gephaistos

CMakeLists.txt

@@ -12,6 +12,7 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -O2")
 
 # add the binary tree to the search path for include files
 include_directories(${PROJECT_SOURCE_DIR})
+include_directories(${CMAKE_CURRENT_BINARY_DIR})
 include_directories(parser-verilog)