Hi
I use following settings to install LLVM 11:
addons:
apt:
sources:
- sourceline: "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-11 main"
key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
packages:
- clang-tools-11
- clang-11
This works good for x86_64 or for LLVM 10, but not for LLVM 11 on ARM. The error build example can be found here: https://travis-ci.com/github/MIPT-ILab/mipt-mips/jobs/430644398