The latest upstream libffi is getting bit-rotten with the Windows/MSVC
builds, and since we are eventually moving to a Meson-based build system,
make use of the Centricular fork of libffi[1], which is better maintained
and tested for builds on Windows, with the use of DLLs over static libraries
and elimination of awkward build flags that we had to use for GObject.
[1]: https://github.com/centricular/libffi
Use the new gen_util_scripts.py script to generate the glib-mkenums and
gdbus-codegen scripts with the proper info in them so that they can be
used properly by other build systems such as Meson, during "install".
The custom build rules did not have rules for x64 Debug builds during
the refactoring. Fix this by removing all Platform and Configuration
conditions for it, since this is done on are configs in the same manner.
Noted by Ignacio Casal Quinteiro.
This adds support for Visual Studio 2017 by updating the autotools files for
copying and updating the Visual Studio 2010 project files.
Since the toolset version of Visual Studio 2017 is no longer in the form
of $(MSVC_VER_SHORT)0, we need to specify the full number, but this is a
rather simple change we have here. Note that Visual Studio 2017's CRT
aims to be compatible with the 2015's CRT, so it should be possible to
use 2017-compiled code with the 2015-compiled ones.
It was suggested that the project files be moved here as we don't actually
need to go two directory layers from $(srcroot), and would help us to
standardize on things in the future across the board.
