This makes it possible to write templated alternatives for ConvertibleThroughBase
which are then available for any (strong) type that implements a base() function
In the end making adding new ConvertibleThroughBase types less awkward.
That it works for the version we have packaged it pure coincidence, as that is
one of the few versions that due to a bug allow it. So add the appropriate
template specialisations to support it out-of-the-box within OpenTTD.
This is accomplished by changing it to a single member struct with the
appropriate operator overloads to make it all work with not too much
source modifications.
CMake works on all our supported platforms, like MSVC, Mingw, GCC,
Clang, and many more. It allows for a single way of doing things,
so no longer we need shell scripts and vbs scripts to work on all
our supported platforms.
Additionally, CMake allows to generate project files for like MSVC,
KDevelop, etc.
This heavily reduces the lines of code we need to support multiple
platforms from a project perspective.
Addtiionally, this heavily improves our detection of libraries, etc.