Add link flag -undefined dynamic_lookup for macOS build (fixes GH-4)

CMakeLists.txt

@@ -31,14 +31,18 @@ if(NOT LLVM_ENABLE_RTTI)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
 endif()
 
+if (APPLE)
+  set(LINK_FLAGS "-undefined dynamic_lookup")
+endif()
+
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wno-unused-parameter")
 
 add_library(LLVMObfuscator SHARED Plugin.cpp)
 
 target_include_directories(LLVMObfuscator PRIVATE ${CMAKE_SOURCE_DIR})
 target_include_directories(LLVMObfuscator PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
 
-target_link_libraries(LLVMObfuscator LLVMCore LLVMSupport)
+target_link_libraries(LLVMObfuscator LLVMCore LLVMSupport LLVMInterpreter)
 
 option(BUILD_DUMMY "Build dummy plugin" OFF)
 if(BUILD_DUMMY)