Is this a bug? about precompiled headers option

[danielking]

There are three options for precompile headers in projects' properties dialog.
They're "Generate PCH in a directory alongside origical header", "...in the object output dir", "... alongside original header(default)".

I don't want to generate PCH in the source dir, because I want to use subversion to control my source codes. I can set object and target output dirs out of source dir, and I choose "Generate PCH in the object output dir" for not generating PCH in source dir.
But the PCHs don't work under this way. The precompile header files seem to be compiled every time when included.