[llvm-dev] Environment variables

[David Greene via llvm-dev]

Ok, thanks!  I'm not dealing with UTF-8 so I don't think Process::GetEnv
will work.  I was looking for something that caches calls to getenv so
checks could be put into tight(-ish) loops without too much performance
impact.

Would such a utility be of interest to the community?

                           -David

Reid Kleckner via llvm-dev <llvm-dev at lists.llvm.org> writes:

> llvm::Process::GetEnv looks like it does the right thing.
>
> I think we added it to deal with Unicode on Windows, though. We have
> plenty of calls to getenv that are mostly looking for '1', '0', or
> variable presence, and they pretty much work.
>
> On Wed, Sep 5, 2018 at 2:12 PM David Greene via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>
>     Is there an LLVM-ish way to handle environment variables?
>     Specifically,
>     I want to check existence and/or value of an environment variable
>     and
>     take appropriate action.
>     
>     I was kind of surprised that LLVM doesn't seem to have any
>     special/optimized way to deal with environment variables. The one
>     Stackoverflow I found on it suggested using getenv().
>     
>     Thanks!
>     
>     -David
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