Bug 208093

install -d has a race condition between checking for existence and mkdir(). It fails with "File exists". This can be encountered running "make -j" where the same parent directory is created in multiple rules:
install -d /Users/travis/inst/sbin  #these three run at once
install -d /Users/travis/inst/bin
install -d /Users/travis/inst/bin
install: mkdir /Users/travis/inst: File exists

Run two copies of the following to reproduce it. Note that the same problem also exists for intermediate directories, though that's more difficult to reproduce.

#!/bin/sh

while true; do

install -d /tmp/xx123/test
rm -d -f  /tmp/xx123/test

done


output:
install: mkdir /tmp/xx123/test: File exists
install: mkdir /tmp/xx123/test: File exists
install: mkdir /tmp/xx123/test: File exists
...