Having the externals location default to /scratch/condor_externals for
non-proper builds has several annoyances. First, it doesn't work for a
development machine used by more than one developer. The second
developer who tries to build runs into file permission errors. They
have to disable caching in order to get their builds to work.
Second, most machines outside of the UW Comp Sci department don't have
a /scratch directory. The default build configuration shouldn't
require its existence. Creating it may not be an option in some
locations (e.g. if the person building doesn't have root).
Third, there's no easy way to specify an alternate externals cache
location. If you don't want to use /scratch/condor_externals, you have
to disable caching.
I propose two changes that address these annoyances:
1) On windows, the environment variable CONDOR_BLD_EXTERNAL_STAGE
specifies where to place the externals cache. It should be useable on
all platforms. If it's set, externals caching is enabled and it gives
the location.
2) If CONDOR_BLD_EXTERNAL_STAGE isn't set, externals caching is
disabled by default (meaning externals are installed in the build
tree). If externals caching is explicitly enabled (via the cmake
option CACHED_EXTERNALS), then the cache is placed under
/scratch/condor_externals, as before.
As a result, in the normal case, developers won't run into each
other's externals and not special hard-coded directories need to
exist. And it's easy for a developer to set up an externals cache
where they want that's used by all of their build directories.
If there are no objections, I'll commit the change to V7_8-branch next
week.
+--------------------------------+-----------------------------------+
| Jaime Frey | I used to be a heavy gambler. |
| jfrey@xxxxxxxxxxx | But now I just make mental bets. |
| | That's how I lost my mind. |
+--------------------------------+-----------------------------------+
_______________________________________________
Condor-devel mailing list
Condor-devel@xxxxxxxxxxx
https://lists.cs.wisc.edu/mailman/listinfo/condor-devel
