[CMake] faking convenience libraries

[Brandon J. Van Every]

Bill Hoffman wrote:
>
> CMake does not directly support [static libraries as part of a static 
> library].
> However, you can put a full path to a .o file as a source for a 
> library and cmake will do the right thing for with it.  The catch is I 
> have never done this, and it will be difficult to figure out the paths 
> to the .o files, and make sure they are built before they are used in 
> the archive.  It may or may not be possible to do what you want, and I 
> am sure it will be ugly....
>

Well I figured out the paths to the .OBJ files.  Note they're coming out 
as .OBJ files on Windows, both for MinGW and for MSVC.  When I dump my 
.OBJ file absolute pathnames into ADD_LIBRARY, CMakeSetup complains that 
"the source file doesn't exist," because of course they haven't been 
built yet.  I tried SET_SOURCE_FILES_PROPERTIES(${theobjs}PROPERTIES 
GENERATED true), but it doesn't suppress the error.  I don't think that 
function thinks they're source files.  Says it tried just about every 
extension, except the .obj and .o extensions I might actually be 
interested in.

So what now?


Cheers,
Brandon Van Every