AppVeyor platform update 11/09/18

[GunChleoc]

appveyor broken again. seems like the last windows image update removed the bcrypt libraries (as it is the case in win 10), so boost 1.67 is not working. so we can try to downgrade boost or to change the random generator.

Suspected culprit is: generate_random_uuid()

@Notabilis: Can we just use rand() instead?

[Tino (tino79)]

=> https://github.com/boostorg/uuid/issues/68

[Tino (tino79)]

Appveyor Platform Update incl. MSYS2 https://github.com/appveyor/ci/issues/2703 on 11/09/18.
As far as i can see, there a several breaker:
- Static linking for boost does no longer work, because bcrypt does not get linked
- on x86_64 the glbindings seem to be broken
- dll renames (e.g. libfluidsynth)

[Notabilis (notabilis27)]

If I understand Tino's branch and the problem correctly we will now manually request linking with bcrypt, so I think generate_random_uuid() can stay in (not tested).

If required, we could replace it with rand(), though I wouldn't like it. generate_random_uuid() is a cryptographic function so it creates "good" random values while the result of rand() shouldn't be used for security purposes. But, well, it probably doesn't really matters in our case anyway.

[hessenfarmer (stephan-lutz)]

Just out of curiosity (and to understand how to update my Windows 10 building Environment):
What was the issue with glbinding? Couldn't see this in the logs.

[Tino (tino79)]

https://ci.appveyor.com/project/widelands-dev/widelands/builds/20263492/job/pub38qq5fhdlgtui

When I connected via RDP and started a test or widelands manually, i got a unknown entry point exception in libglbinding.dll.

[hessenfarmer (stephan-lutz)]

Interesting thing is that the Version of Glbinding hasn't changed between the last green appveyor build and the first red one. Also boost version hasn't changed.
Changes in MSYS2 I could identify from the log were:

Sdl2 2.0.8  2.0.9
Fluidsynth 1.1.11  2.0.0
glib2 2.56.1  2.58.1
harfbuzz 1.8.8  2.1.0
opus 1.3 (not part of the chain previously)
opusfile 0.11 (not part of the chain previously)
sdl2mixer 2.0.2  2.0.4

[GunChleoc (gunchleoc)]

Fixed in build20-rc1