When installing runtime files (specs, objects), makefile target
compete into creating directories which share a common subpath.
This is bad at least for BSD install, which may call mkdir after
a subpath has been created by another call to BSD install.
Ensure we create the directory sequentially to fix the race.
When installing runtime files (specs, objects), makefile target compete into creating directories which share a common subpath. This is bad at least for BSD install, which may call mkdir after a subpath has been created by another call to BSD install. Ensure we create the directory sequentially to fix the race.