IOLinux.cpp should include <sys/select.h> as it uses select() functionality.
On certain platforms it's included implicitly by other headers, which is why
it compiled before. This makes it also work on musl platforms.
libusb transfer callbacks might be called immediately during transfer
submission in some cases. (libusb doesn't even specify what thread
the callback is invoked on.) In other words, it is possible to reach
the transfer callback from the CPU thread, and not just from the
USB event handling thread.
So CoreTiming::FromThread::NON_CPU is incorrect and should instead
be ANY.
Unfortunately, it appears that using libusb's synchronous transfer API
from several threads causes nasty race conditions in event handling and
can lead to deadlocks, despite the fact that libusb's synchronous API
is documented to be perfectly fine to use from several threads (only
the manual polling functionality is supposed to require special
precautions).
Since usbdk was the only real reason for using a single libusb context
and since usbdk (currently) has so many issues with Dolphin, I think
dropping support for it in order to fix other backends is acceptable.
Now that the floating point members are assigned in bulk, we can remove
their setter macro. While we're at it, we can also remove the setter for
unsigned int, given it's not used.
We were doing quite a bit of unnecessary work within CMake to handle and
make sure the necessary libraries were copied over. That approach has
several downsides:
1. It's not possible to handle multi-configuration generators (like
Visual Studio) in an easy manner. The existing script would fail to
copy over the necessary libraries if one configuration was built, and
then another one was built.
2. If you have Qt already installed (properly) by the official binary,
the existing script would copy *all* dlls even if they weren't
necessary. This is pretty bad, since it can waste quite a bit of
space.
Instead, we can just delegate off to the official deployment application
bundled with Qt's libraries that determines what the necessary libraries
are and copies them over as necessary. This also means we can properly
support both release and debug binaries in the same directory, like how
the old handcrafted Visual Studio project files allowed.
Its sufficient to simply specify a debug postfix instead of using an
separate variable. What's nice about this approach is that it will
actually work :p
Previously the code wouldn't work for multi-configuration generators
like Visual Studio.
Léo Lam