Question

How can I know the return value of gcc?

For example, I have one c file, test.c, and I simply run gcc test.c in terminal. It can report if current compile meet some errors, but how can I know the return value of this time compile process of gcc?

Now I know 1 means has error, but 0 will return not only warning but also compile OK, how can I if there is error. If I use -Werror, it may stop compile, I don’t want to stop compile

Answer 1

The return variable is in the shell variable $?.

> gcc bla.c
> echo $?
0

Edit: on windows it is in %errorlevel%.