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

#pragma clang diagnostic ignored "-Wunused-parameter"

Answer 2

You can also use this command:

-Wno-unused-command-line-argument

Answer 3

Turns out the correct answer is -Wno-error=unused-command-line-argument.

Answer 4

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.

Answer 5

In Visual Studio 2019, open the property pages of the C++ Project and go to Configuration Properties -> C/C++ -> CommandLine.

In the "Additional Options" text box, paste

-Wunused-command-line-argument

Do this for each configuration / platform combination. This worked for me, to turn off only this warning.