[CMake] CPack source packaging

[Szőts Ákos]

Dear list members,

I made a project with CMake (2.8.10) on Linux and want to use CPack to create 
its source .tar.bz2 file.

The task is really simple: copy all of the *.cpp and *.h files into the 
.tar.bz2 file preserving the directory structure.

Although sounds really simple, I've yet to find a solution. The problems are:
- In the source directory goes the development also, producing a lot of other 
files which are unneeded.
- With CPACK_SOURCE_IGNORE_FILES variable I can exclude some files, but without 
the regexp positive lookahead feature I cannot say "exclude everything, except 
for the *.cpp and *.h"
- Other solution would be an external command (eg. find and cp) to copy all the 
files into an other temporary directory and set that directory as the source 
directory. The drawback: there's no way to tell in CMakeLists.txt which is the 
current CPack generator, so I simply can't write "if (CPACK_GENERATOR STREQUAL 
"TBZ2")", because CPACK_GENERATOR is empty at "cmake ." time. So the find and 
copy command either ran all the time or not even once.
- As a last resort I can execute a bz2 command which would do all the 
necessary things, but that would run every time (see the problem above).

The command I issue to generate the source:
cpack --config CPackSourceConfig.cmake

Is there a simple solution to achieve this?

Best regards,

Ákos Szőts