[Scons-users] sconsign recovery after segfault

[John Galbraith]

I am using scons to keep a lot of numerical computations up to date as I 
update input decks or numerical models.  Most of those computations are 
performed in C++ (boost::python, actually) to avoid the annoying global 
interpreter lock (GIL) that renders python so useless on multicore machines.

On occasion (ahem) my C++ extensions crash. 8-(  Scons in this case does 
not exit gracefully with the unfortunate side effect that my .sconsign 
gets corrupted or lost (not sure which), and I lose the whole dependency 
state.  So basically, when my extension crashes, every target in the 
whole build system becomes out of date as far as scons is concerned.  
This costs a lot of flops to recover and defeats the purpose of using a 
fancy build system like scons.

Is there any way for scons to protect itself from broken extension 
calls, and at least flush .sconsign before surrendering to no-fault 
flaming death?

John