[ET Trac] [Einstein Toolkit] #136: Don't rebuild external libraries so often

[Einstein Toolkit]

#136: Don't rebuild external libraries so often
--------------------------+-------------------------------------------------
  Reporter:  eschnett     |       Owner:        
      Type:  enhancement  |      Status:  review
  Priority:  minor        |   Milestone:        
 Component:  Cactus       |     Version:        
Resolution:               |    Keywords:        
--------------------------+-------------------------------------------------

Comment (by anonymous):

 I think we might be converging on a solution, but we also have two
 problems at hand here. Let's try to disentangle them.

 1. We might want to use a library location outside of Cactus, but still we
 would like Cactus to
  build that library.

   A user would have to specify that location. It might be useful to do
 that for each library separately, but it might also be of interest to have
 one switch to build all libraries in some specified place.

 2. Regardless of the location being inside or outside of Cactus it should
 be possible to avoid too many rebuilds (the original intent of the ticket)
 in an automatic fashion.

   Here we could, as described above, let the user specify that location,
 or choose some default within
   the Cactus tree for that, possibly containing the configuration name,
 but for sure containing the
   configuration options in a file. Then Cactus can compare configuration
 data of different
   configurations within subdirectories there, and figure out by itself if
 a library needs to be rebuilt,
   or if an existing version can be used.

 Solving problem 1 needs user interaction to avoid rebuilds, solving
 problem 2 would make it work automatically, but is also more work to
 implement.

 I suggest we go ahead with the current patch, and keep this as overwrite
 even if we implement something for problem 2.

-- 
Ticket URL: <https://trac.einsteintoolkit.org/ticket/136#comment:16>
Einstein Toolkit <http://einsteintoolkit.org>
The Einstein Toolkit