How to get installed compiler version for test cases?

How to get installed compiler version for test cases?

[Nurdin Premji]

What is the quickest way to find out the installed compiler version for 
use with junit Test cases.

I know that for kernel versions there are KernelMatch, KernelVersion and 
Uname, to decide which kernels have what features, but the use of uname 
is also a function and not just a program.

What I need to do is grab the output of "gcc --version" to decide 
whether the new tests should be run or skipped as unresolved.

Thank you,
Nurdin

Re: How to get installed compiler version for test cases?

[Roland McGrath]

> What is the quickest way to find out the installed compiler version for 
> use with junit Test cases.
> 
> I know that for kernel versions there are KernelMatch, KernelVersion and 
> Uname, to decide which kernels have what features, but the use of uname 
> is also a function and not just a program.
> 
> What I need to do is grab the output of "gcc --version" to decide 
> whether the new tests should be run or skipped as unresolved.

One simple approach is to have tests that do:

#if __GNUC__ < 4 || __GNUC_MINOR__ < 3
int main (void) { return 77; } 
#else
... real test ...
#endif

i.e., you run them anyway but they are stubs that always just quickly exit
with 77, which means "SKIP".  I don't know if it's simple to have junit
treat it that way though.


Thanks,
Roland