There's no problem with $? that I know of.

You know for a fact that they compile on Solaris, but are you sure that they compile under Windows? Can you compile these files without the Perl script? Have you tried to execute the same commands by hand to see what happens? this really sounds more like an issue with the porting of your source files than a perl issue..

Rich

ps- You can still use ../temp/my/dir type of directory notation on NT in perl.. just not in your system calls.