Add a libflatbuffers for other projects to use

[martell]

Add's an option to cmake to build a static library
So that 3rd party projects can use flatbuffers without having to compiler source

[ghost]

Thanks! Why are all the language generators in this library, though? presumably they're only useful for flatc. The only use case for a library is if you want to do JSON parsing/reading, which is covered by idl_parser.cpp and idl_gen_text.cpp.

[martell]

Hi :)

I based it from what cocos2d-x was using in its game engine
https://github.com/cocos2d/cocos2d-x-3rd-party-libs-bin/blob/v3/flatbuffers/CMakeLists.txt

I didn't actually look at the sources when I made it heh.

I can move them into flatc_sources if you want ?

Thanks for taking the time to look also :)

[ghost]

Yes, best to keep idl_gen-* (except idl_gen.text.cpp) in FlatBuffers_Compiler_SRCS, since no library user will ever need them.

[martell]

done :)

[ghost]

You mean idl_gen_cpp.cpp ? That generates the c++ code, which should never be needed at runtime.

[martell]

Yeah I realized after looking at it which is why I removed the comment :)

[ghost]

Thanks :)