See https://www.mongodb.com/community/forums/t/scons-4-2-0-fails-compilation/120611?u=r_k

Compiling MongoDB with scons 4.2.0 fails (on FreeBSD). It fails from MongoDB 4.2 up until your git code from github. Scons 4.1.0 worked.

The error I get while compiling from github is:

Checking for C function sync_file_range()... noChecking for C header file x86intrin.h... yesChecking for C header file arm_neon.h... noTypeError: '<' not supported between instances of 'str' and 'NoneType': File "/root/src/mongo/SConstruct", line 5243: env.SConscript( File "/usr/local/lib/python3.8/site-packages/SCons/Script/SConscript.py", line 597: return _SConscript(self.fs, *files, **subst_kw)

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