[CMake] Build flags not applied during compiler testing on Ubuntu

[Brad King]

On 08/21/2018 03:18 PM, Richard Shaw wrote:
> without --specs=nosys.specs applied during compiler testing, cmake fails.

How is this flag specified when invoking CMake?

> https://bugs.launchpad.net/ubuntu/+source/cmake/+bug/1787723

According to that discussion it works on Fedora but not on Ubuntu.
Please try an upstream version of CMake to compare behavior.

-Brad