Merge branch 'fix-old-cmake-build-error' into 'master'

fix(build): fix after flatc build over to run python code

See merge request third-party/flatbuffers!4

CMake/CMakeLists_legacy.cmake.in

@@ -545,33 +545,6 @@ function(compile_flatbuffers_schema_to_embedded_binary SRC_FBS OPT)
   register_generated_output(${GEN_BFBS_HEADER})
 endfunction()
 
-# Look if we have python 3.5 installed so that we can run the generate code
-# python script after flatc is built.
-find_package(PythonInterp 3.5)
-
-if(PYTHONINTERP_FOUND AND
-  # Skip doing this if the MSVC version is below VS 12.
-  # https://cmake.org/cmake/help/latest/variable/MSVC_VERSION.html
-  (NOT MSVC OR MSVC_VERSION GREATER 1800))
-  set(GENERATION_SCRIPT ${PYTHON_EXECUTABLE} scripts/generate_code.py) 
-  if(FLATBUFFERS_BUILD_LEGACY)
-    # Need to set --cpp-std c++-0x options
-    set(GENERATION_SCRIPT ${GENERATION_SCRIPT} --cpp-0x)
-  endif()
-  if(FLATBUFFERS_SKIP_MONSTER_EXTRA)
-    set(GENERATION_SCRIPT ${GENERATION_SCRIPT} --skip-monster-extra)
-  endif()
-  add_custom_command(
-    TARGET flatc
-    POST_BUILD
-    COMMAND ${GENERATION_SCRIPT} --flatc "${FLATBUFFERS_FLATC_EXECUTABLE}"
-    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
-    COMMENT "Running ${GENERATION_SCRIPT}..."
-    VERBATIM)
-else()
-  message("No Python3 interpreter found! Unable to generate files automatically.")
-endif()
-
 if(FLATBUFFERS_BUILD_TESTS)
   file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/tests" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
   file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/samples" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")