Tests not passing on default linux distro due to CC not being clang.

[lkorenc]

VAST version

master

LLVM version

18

Operating system

Agnostic

Description

If CC is not set to clang some ABI-specific tests will fail (as they compile to .ll). Replace %cc in those tests with newly introduced %clang (if somebody is running tests they are already linking to clang so they should have the binary with compatible version - or add some config option).

Steps to Reproduce

Set CC to gcc, run tests.