On Thu, Apr 24, 2014 at 3:29 PM, Serge Monkewitz <[log in to unmask]> wrote:

On Apr 24, 2014, at 12:21 PM, Jim Bosch <[log in to unmask]> wrote:

On Thu, Apr 24, 2014 at 3:18 PM, Robert Lupton the Good <[log in to unmask]> wrote:

I do take your point about scons checking, but as long as boost evolves (and it does!) we should probably be paying that price.

Actually, the sconsUtils package has code (currently enabled by default) that causes it not to check for changes in third-party headers (such as boost), even if "" is used. Not sure if that's in play for the Qserv build, of course.

Does that mean if I `eups setup` a different version of e.g. boost with header changes, scone won’t realize that things need to be rebuilt?

Actually no - as long as the new Boost is in a different place. SCons will see the path change, and that will trigger a rebuild. But if you modify a Boost header in-place, or install a new version into the same place as the old version, it won't see the change.

Jim