Follow-up Comment #29, bug #15919 (project make):
I took a copy of glibc 2.9 and tried building it with -j10 on my uniprocessor
and on my dual core (actually single hyperthreading CPU) and it worked fine.
But when I took it to a 4-way hyperthreading (8 core) system and ran with
-j10 I did see some bad behavior: not hangs though. Instead it seemed the
same recipe was being invoked >1 time which eventually caused the build system
to fail, because at the end of the recipe there's a job that removes a file.
If the multiple recipes run in the "right" way then one of the instances
removes that file before the next one gets a chance to use it.
I'll look at this.
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