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2014-02-14 wcdj

May happy ending of love belong to every developer.

From: 

Question:

How can I hide "defined but not used" warnings in GCC?

Answers:

Just saw this thread while searching for solutions to this problem. I post here for completeness the solution I found...

The GCC compiler flags that control unused  include:

-Wunused-function-Wunused-label-Wunused-parameter-Wunused-value-Wunused-variable-Wunused (=all of the above)

Each of these has a corresponding negative form with "no-" inserted after the W which turns off the warning (in case it was turned on by -Wall, for example). Thus, in your case you should use

-Wno-unused-function

Of course this works for the whole code, not just compile-time asserts. For function-specific behaviour, have a look at.

处理办法：

GCC编译有一个参数-Wall，其实是包含其他许多的警告选项，如-Wunused, -Wformat等等。

假如我想使用-Wall选项，但会有许多函数定义未使用的提示，如何在使用-Wall参数的时候关闭-Wunused选项，请问有什么办法？

试试 -Wall -Wno-unused，我这里管用

stackoverflow:

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