Try super search.

• Free C / C++ Compilers and Interpreters (thefreecountry.com)
• Catalog of Free Compilers and Interpreters
• Catalog of compilers: C++
• compilers.net : free : compilers : c/c++

But if I understand you correctly, I should be able to use the gcc and mingw to build my wrapper code.

Provided you compile perl with gcc and mingw, otherwise it will be very painful.