Kamil Zaripov

Android build.

3

I've faced with problem building Android version of this library. At least this library requires osgQt but OpenSceneGraph (at least since version 3.4.0) doesn't contain osgQt library for Android builds....

Move user-defined -idirafter to the end of args

5

###### Description of changes As discussed in https://github.com/NixOS/nixpkgs/issues/190005 we have an issue with `-idirafter` arg in cc-wrapper. In this PR we add logic that moves all `-idirafter` to the end...

- Replace `gcc` and `g++` commands to more generic `as`, `cc` and `c++` - Replace `CROSS` variable with more common `CROSS_COMPILE` - Add `DESTDIR` and `PREFIX` variables to customize install...