Add CI for all platforms

[Youw]

• Linux (Ubuntu?) Add Ubuntu CI #6
• macOS Add macOS CI #11
• Windows MSVC/VisualStudio Add MSVC CI #12
• Windows MSVC/Ninja/nmake Add MSVC CI #12
• Windows Cygwin/MinGW
• (Fedora?) Cross-compile MinGW
• OpenBSD
• NetBSD
• Android NDK

Any other platforms?

[mcuee]

I changed FreeBSD to NetBSD as FreeBSD has their own version of libusb under BSD licenses and it is part of the FreeBSD system (not an add-on).

[mcuee]

There are other platforms like Solaris and Haiku but I guess we may not want to deal with them.

Reference:

• 1.0.26-rc1 test matrix libusb#1099

[mcuee]

@Youw

I have no ideas about WebAssembly + WebUSB support.
https://github.com/libusb/libusb/wiki#supported-environments

[mcuee]

@Youw

For the CI action, it will be good to keep the binaries as well, at least for Windows (MSVC x86/x64/ARM/ARM64 and MinGW x86/x64).

[Youw]

There are other platforms like Solaris and Haiku but I guess we may not want to deal with them.

My thoughs: right now it is not a part of CMake implementation. As soon as someone needs those (and adds its support to CMakeLists.txt) - we will think about a CI for it too.

[Youw]

good to keep the binaries as well

I'm not so sure about that. Not any time soon.
Firstly - because CMake is not an official build system for libusb.
Secondly - the main purpose of this repo is to be able to build libusb with CMake.

If someone needs a prebuilt binaries - that better be provided by a mainline libusb repo/be a part of its release process/etc.

---

Sure, it will be useful for some, e.g. temporary binaries saved as part of a PR (e.g. to verify a bugfix for someone or so).
But I don't want people to expect to find prebuilt binaries here. And even the bugfix verification - that's more about PRs to libusb itself, not to libusb-cmake.

[mcuee]

@Youw

I agree with you now, not to keep the binary as this is not official libusb. Rather we should improve libusb github action to keep Windows binaries, not in libusb-cmake.