| solver means "Solar Version", a weird name with only historical significance now | |
| It has no relation to the verb "to solve". | |
| solver is the directory tree into which header files for inter-module | |
| use and build results (libraries, shared libraries, executables) are | |
| copied ("delivered") during the build, and from where they are then | |
| picked up when constructing an installer (Windows), a RPM or deb | |
| package (Linux) or an app bundle (Mac). |