Cross-platform stderr redirecting in c/c++?

[cfaun5]

I am trying to capture the standard error output (not to be confused with standard output) of a program after executing it, that will run on all major platforms. The closest things I could find were popen, which only supports redirecting stdin and stdout, and pipe, which is not cross-platform.
Is there actually such a solution (preferable elegant, therefore, not embedding perl calls to IPC::Open3 using an obscure CPAN module)?

Any help would be greatly appreciated.
-cfaun5

[Strogian]

er, well, you can only use the standard library if you want it to be cross platform.

how about freopen() ?