I think in the specific case of C++, this is mostly an Android problem, not a general cross-platform problem. C++ works just fine on iOS, and interoperates ver

I think in the specific case of C++, this is mostly an Android problem, not a general cross-platform problem. C++ works just fine on iOS, and interoperates very well with Obj-C (not sure about Swift, though). C++ is a mess on Android. It can certainly be made to work, but the tooling and library support is minimal.