Build killed with signal 15 after 150 minutes of inactivity

I am trying to backport llvm-3.2 on my PPA ( https://launchpad.net/~oibaf/+archive/graphics-drivers/+packages ). precise (32 and 64 bit) built OK, as well as 64 bit quantal. 32 bit quantal however failed due to a timeout:

-- Testing: 6841 tests, 1 threads --

Session terminated, terminating shell... ...terminated.
Testing: 0 .. 10.. 20.. 30.. 40.. 50.. 60make[3]: *** wait: No child processes. Stop.
make[3]: *** Waiting for unfinished jobs....
make[3]: *** wait: No child processes. Stop.
make[2]: *** wait: No child processes. Stop.
make[2]: *** Waiting for unfinished jobs....
make[2]: *** wait: No child processes. Stop.
make[1]: *** wait: No child processes. Stop.
make[1]: *** Waiting for unfinished jobs....
make[1]: *** wait: No child processes. Stop.
make: *** wait: No child processes. Stop.
make: *** Waiting for unfinished jobs....
make: *** wait: No child processes. Stop.
Build killed with signal 15 after 150 minutes of inactivity

The build log is here:
https://launchpadlibrarian.net/126102736/buildlog_ubuntu-quantal-i386.llvm-3.2_3.2%7Erc3-1%7Eexp1ubuntu1%7Eq%7Egd_FAILEDTOBUILD.txt.gz

I build it again but with the same results. Probably the machine building this is too slow and leads to the timeout. Can the build timeout of my PPA be augmented to avoid this problem?

Thanks.