On Nov 15, 2016 23:57, "Peter Dimov" wrote:

Bruno Dutra wrote:

...

Meanwhile, following Rene's suggestion to move away from Travis'

container based infrastructure, I was also able to run tests on Clang 3.9 and even on what seems to be nightly snapshots of Clang 4.0:

...

https://github.com/brunocodutra/metal/blob/develop/.travis.yml.

I don't care that much for 3.9 and 4.0, but the -stdlib=libc++ option is intriguing. Does it require sudo?

I just checked and libc++-dev is whitelisted on Precise images, so it shouldn't require sudo. That said, the version of libc++ available on such an old version of Ubuntu might not fit your needs (it didn't mine) so you might need to upgrade to Trusty, in which case I believe it requires sudo, because it doesn't seem to be whitelisted yet.