[cmake-developers] [PATCH] Fix error in compiling C++ files generating by protobuf compiler when .proto files are organized in a directory hierarchy

[David Cole]

> ... Long story short I think it is safe to assume ...


It is never safe to assume anything. I don't have personal experience 
with protobuf....

But in general, inputs to CMake are allowed to be full path or not, and 
when not, they're usually treated relative to CMAKE_CURRENT_SOURCE_DIR. 
Consult the documentation on individual functions for details. After 
this, I'll be quiet on this, but I wouldn't accept the patch as is 
without a guarantee that relative paths are the only ones allowed as 
input.

Hopefully, Philip Lowman is listening, and he can chime in. He's listed 
as the FindProtobuf module maintainer here: 
http://www.cmake.org/Wiki/CMake:Module_Maintainers


Cheers,
David C.