I had a build problem there, too, and this solved it: https://rt.cpan.org/Public/Bug/Display.html?id=129768 In short, you have to edit C:\Strawberry\cpan\build\Wx-0.9932-1\cpp/wxapi.h (verxion numbers may differ) inserting the following line after line 133: #undef calloc Then run make make test and make install and you're fine.