如何使用 -Wall 启用 -Wunused-variable？
How to enable -Wunused-variable with -Wall?
我正在使用以下命令构建 C++14。
g++ -std=c++14 -O2 -Wall -pedantic -pthread main.cpp && ./a.out
如何将 -Wunused-variable 添加到上面的行，以便显示除 -Wunused-variable 之外的所有警告？
来自gcc docs：
You can request many specific warnings with options beginning with ‘-W’, for example -Wimplicit to request warnings on implicit declarations. Each of these specific warning options also has a negative form beginning ‘-Wno-’ to turn off warnings; for example, -Wno-implicit.
所以要禁用未使用的变量警告，您可以传递 -Wno-unused-variable
我正在使用以下命令构建 C++14。
g++ -std=c++14 -O2 -Wall -pedantic -pthread main.cpp && ./a.out
如何将 -Wunused-variable 添加到上面的行，以便显示除 -Wunused-variable 之外的所有警告？
来自gcc docs：
You can request many specific warnings with options beginning with ‘
-W’, for example-Wimplicitto request warnings on implicit declarations. Each of these specific warning options also has a negative form beginning ‘-Wno-’ to turn off warnings; for example,-Wno-implicit.
所以要禁用未使用的变量警告，您可以传递 -Wno-unused-variable