[CMake] Help! Is anyone embedding a ttype library?

[james]

 From issue 12909: (rc.exe cannot find generated type library, Visual 
Studio 10 builder)

I have an IDL file that generates a type library, and an RC file that 
wants to embed it.

The .tlb is emitted here:

C:\build\easyrtd.vs10\EasyRTD\easyrtd.dir\Debug>dir *.tlb
   Volume in drive C has no label.
   Volume Serial Number is 5AB0-0B44

  Directory of C:\build\easyrtd.vs10\EasyRTD\easyrtd.dir\Debug

23/01/2012 18:52 2,612 EasyRTD.tlb
                 1 File(s) 2,612 bytes
                 0 Dir(s) 171,651,473,408 bytes free

there is no obvious sign of the rc file (easyrtd.rc) in the working 
build directory, but if I insert a #error statement I get:

1>C:\src\easyrtd\EasyRTD\easyrtd.src\EasyRTD.rc(21): error RC2188: 
C:\build\easyrtd.vs10\EasyRTD\EasyRTD.dir\Debug\RCa03492(25) : fatal 
error RC1116: RC terminating after preprocessor errors
  1>

which suggests that the file was copied over, if temporarily.

Unfortunately I cannot say:

2 TYPELIB "EasyRTD.tlb"

since rc.exe fails to find the file.

I can say:

2 TYPELIB "c:\build\easyrtd.vs10\EasyRTD\easyrtd.dir\Debug\EasyRTD.tlb"

or, I can say:

2 TYPELIB "EasyRTD.tlb"

if I also (don't laugh!) say in CMakeLists.txt:

include_directories(. c:/build/easyrtd.vs10/EasyRTD/easyrtd.dir/Debug)

before the source definition.


This seems to me a fundamental part of COM server development. Is there 
a sane recipe I can use?  (Even something that will get the correct 
build dir name into the include_directories command?  Tho I'm concerned 
the dependency settings might not be quite right if the RC scanner 
doesn't treat TYPELIB as a resource search and embedding operation.)

Thanks
James