Re: [Boost-build] [Issue #83] Patch for files with same name in different directories.

From: Jurko Gospodnetiæ (jurko.gospodnetic_at_[hidden])
Date: 2008-02-15 04:43:04

   Hi Juergen.

> Reviews of the proposed changes are welcome. I'd like to commit a 
> (surely improved) version to trunk after 1.36 is out.
> 
> Comments ?

   Sorry, I did not test this or take a look at the implementation but 
still wanted to ask the question...

   If this problem with multiple files in different folders using the 
same file names gets 'fixed'. Then how will we tell Boost Build to build 
just one of them from the command-line?

   Currently you can just say 'bjam <final-target-file-name>' and it 
builds that target file even when there is no explicitly defined top 
level target by the given name. Example: 'bjam a.obj' builds a.cpp...

   This is very useful e.g. when tweaking header files while tracking 
down compiler warnings and you do not want each such tweak to cause all 
your modules to be recompiled that way it takes a looooong time for the 
build to get to the failing module. (We were doing this just 
yesterday... :-) )

   If you simply add a prefix/suffix to the generated file name then it 
needs to be intuitive enough for the user to know when to use it on the 
command line... Maybe this is not be too much trouble since he can first 
see the actual target file name by building the sources... but maybe it 
would - can not decide without actually playing with a prototype solution...

   Perhaps a good solution would be to generate folders in the final 
build tree that represent the source tree and then the user would need 
to specify the full path to the built target file. If this is done then 
I guess one would have to be careful about how such a tree is built when 
using generators generating targets from multiple sources... and when 
sources are spread over far far far away folders....

   Best regards,
     Jurko Gospodnetiæ