Can anybody build 4.17 on mac?

I follow the instruction on github ,but when i try to build ShaderCompileWorker ,it failed.

i find other post that the problem might relates to mono framework, but i have install the latest version of mono.

Tom:Mac tom$ mono -V
Mono JIT compiler version (d15-3/14f2c81 Thu Aug 24 10:33:52 EDT 2017)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors.
TLS: normal
SIGSEGV: altstack
Notification: kqueue
Architecture: amd64
Disabled: none
Misc: softdebug
LLVM: yes(3.6.0svn-mono-master/8b1520c)
GC: sgen (concurrent by default)

the same bug here ,

but no solution still.