Minecraft doesn't start on OpenBSD

[22:11:19 INFO]: Client> Exception in thread "main" java.lang.LinkageError: Unknown platform: OpenBSD
[22:11:19 INFO]: Client> at org.lwjgl.LWJGLUtil.<clinit>(LWJGLUtil.java:280)
[22:11:19 INFO]: Client> at org.lwjgl.Sys.createImplementation(Sys.java:124)
[22:11:19 INFO]: Client> at org.lwjgl.Sys.<clinit>(Sys.java:111)
[22:11:19 INFO]: Client> at ban.K(SourceFile:2173)
[22:11:19 INFO]: Client> at net.minecraft.client.main.Main.main(SourceFile:72)
[22:11:19 ERROR]: Game ended with bad state (exit code 1)

I get this error when I try to launch the minecraft client. The launcher work fine but this one is systematic when I press the big "play" button.

I assume it has something to do with LWJGL not being compiled with OpenBSD support or something like that.