[compiler-rt] r201808 - Add an environment variable to override the default profile output file.

[Diego Novillo]

On Fri, Feb 21, 2014 at 1:01 PM, Bob Wilson <bob.wilson at apple.com> wrote:

> How would that work? At the time we build the code, we may not even know
> where to write the output. E.g., when running on iOS we can only write
> inside the app's sandbox directory. We also need to be able to change the
> output file for different runs, and a random unique identifier won't be good
> enough because we need to know which output correlates with each run.

Gah, silly me. I read the patch wrong, sorry. You are doing this on
the *instrumented* program.