ExternalProject_Add_Step(
    antlr4_runtime
    build_static
    COMMAND ${ANTLR4_BUILD_COMMAND} antlr4_static
    # Depend on target instead of step (a custom command)
    # to avoid running dependent steps concurrently
    DEPENDS antlr4_runtime
    BYPRODUCTS ${ANTLR4_STATIC_LIBRARIES}
    EXCLUDE_FROM_MAIN 1
    WORKING_DIRECTORY ${ANTLR4_BUILD_DIR})

ExternalProject_Add_Step(
    antlr4_runtime
    build_shared
    COMMAND ${ANTLR4_BUILD_COMMAND} antlr4_shared
    # Depend on target instead of step (a custom command)
    # to avoid running dependent steps concurrently
    DEPENDS antlr4_runtime
    BYPRODUCTS ${ANTLR4_SHARED_LIBRARIES} ${ANTLR4_RUNTIME_LIBRARIES}
    EXCLUDE_FROM_MAIN 1
    WORKING_DIRECTORY ${ANTLR4_BUILD_DIR})

ExternalProject_Add_Step(LLVM PatchingLLVM
  COMMAND git checkout -- .
  COMMAND git apply ${OBJWRITER_ROOT}/llvm.patch COMMENT "Applying LLVM patch with ObjWriter fixes"
  WORKING_DIRECTORY ${LLVM_SOURCE_DIR}
  DEPENDEES patch
  USES_TERMINAL 1
  )

ExternalProject_Add_Step(LLVM ObjWriterInjection
  COMMAND ${CMAKE_COMMAND} -E copy_directory ${OBJWRITER_ROOT} ${OBJWRITER_LLVM_POINT} COMMENT "copy ${OBJWRITER_ROOT} -> ${OBJWRITER_LLVM_POINT}"
  WORKING_DIRECTORY ${LLVM_SOURCE_DIR}
  DEPENDEES patch
  USES_TERMINAL 1
  )

ExternalProject_Add_Step(LLVM ObjWriterInjection
  COMMAND ${CMAKE_COMMAND} -E create_symlink ${OBJWRITER_ROOT} ${OBJWRITER_LLVM_POINT} COMMENT "mklink ${OBJWRITER_ROOT} -> ${OBJWRITER_LLVM_POINT}"
  WORKING_DIRECTORY ${LLVM_SOURCE_DIR}
  DEPENDEES patch
  USES_TERMINAL 1
  )

ExternalProject_Add_Step(native test
  WORKING_DIRECTORY <BINARY_DIR>
  ALWAYS TRUE
  COMMAND "$(MAKE)" -C parsec/interfaces/ptg test
  COMMAND "$(MAKE)" -C tools test
)

ExternalProject_Add_Step(native clean
  WORKING_DIRECTORY <BINARY_DIR>
  ALWAYS TRUE
  COMMAND "$(MAKE)" -C parsec/interfaces/ptg clean
  COMMAND "$(MAKE)" -C tools clean
)

ExternalProject_Add_Step(LUA_JIT move
	ALWAYS TRUE
	${LUA_JIT_POSTBUILD_COMMANDS}
	WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}" 
	COMMENT ${LUA_JIT_POSTBUILD_COMMENTS}
	DEPENDEES build
	DEPENDS ${LUA_JIT_BYPRODUCTS}
	BYPRODUCTS ${LUA_JIT_INSTALL_BYPRODUCTS})