cant compile thunderbird

Can't get thunderbird to compile using LFS9.0 stable, get this typypical cryptic error from pythonCode:SHELL=/bin/sh ./mach build
Build configuration changed. Regenerating backend.
0:00.37 /LFSSourceArchives/9.0/thunderbird-68.0/obj-x86_64-pc-linux-gnu/_virtualenvs/init/bin/python /LFSSourceArchives/9.0/thunderbird-68.0/obj-x86_64-pc-linux-gnu/config.status
Traceback (most recent call last):
File "/LFSSourceArchives/9.0/thunderbird-68.0/obj-x86_64-pc-linux-gnu/config.status", line 1244, in <module>
config_status(**args)
File "/LFSSourceArchives/9.0/thunderbird-68.0/python/mozbuild/mozbuild/config_status.py", line 132, in config_status
reader = BuildReader(env)
File "/LFSSourceArchives/9.0/thunderbird-68.0/python/mozbuild/mozbuild/frontend/reader.py", line 854, in __init__
self._gyp_worker_pool = ProcessPoolExecutor(max_workers=max_workers)
File "/LFSSourceArchives/9.0/thunderbird-68.0/third_party/python/futures/concurrent/futures/process.py", line 285, in __init__
EXTRA_QUEUED_CALLS)
File "/usr/lib64/python2.7/multiprocessing/__init__.py", line 218, in Queue
return Queue(maxsize)
File "/usr/lib64/python2.7/multiprocessing/queues.py", line 63, in __init__
self._rlock = Lock()
File "/usr/lib64/python2.7/multiprocessing/synchronize.py", line 147, in __init__
SemLock.__init__(self, SEMAPHORE, 1, 1)
File "/usr/lib64/python2.7/multiprocessing/synchronize.py", line 75, in __init__
sl = self._semlock = _multiprocessing.SemLock(kind, value, maxvalue)
OSError: [Errno 38] Function not implemented
Error running mach:All required and optional packages installed except the wifi.
Any ideas?