GCC with -Werror and -Wno-error=unused does not work as expected

Question

I always compile with -Wall -Wextra -Werror.

However, many times as I do quick compile tests I need to ignore the -Wunused suite of errors. For various reasons, I want to see them as warnings and not errors while leaving all other warnings as errors.

• -Wno-unused of course doesn't display any warning, so it is not what I need.

• The one I thought is the solution -Wno-error=unused unfortunately doesn't seem to work (they are still reported as errors),

• Individually setting the flags (e.g., -Wno-error=unused-variable) works as expected (reported as warning only).

So is there a way to make them warnings while leaving -Werror without to specify all the suit of options -Wno-error=unused-... individually?
Is the behavior of -Werro -Wno-error=unused a bug?

GCC with -Werror and -Wno-error=unused

Computerize

Answer 1

No, there isn’t any way to turn them off at once.

-Wunused enables a list of options like:

• -Wunused-function
• -Wunused-label
• -Wunused-value
• -Wunused-variable

And you should disable them one by one with the Wno option.

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