How to silence unused command line argument error with clang without disabling it?

Question

When using -Werror with clang, it transforms \"warning: argument unused during compilation\" messages into errors, which makes sense. There\'s a -Qunused-argu

Answer 1

In my case, I had similar issues with autoconf while using clang-8 compiler in ./configure.

*clang-8: error: unknown argument: '-ftree-loop-distribute-patterns'*
*clang-8: error: unknown argument: '-fno-semantic-interposition'*

I needed following command line to fix these errors:

./configure CC=clang-8 CXX=clang++-8 LD=clang++-8 CFLAGS=-Qunused-arguments

Hope this is helpful to others.