Major - P3 As of 4.0.12, it was possible to build mongoDB using system packages of libstemmer 0+337, pcre 8.43, wiredtiger 48bf8d (the commit specified in the mongodb git repo for this version), yaml-cpp 0.6.2, snappy 1.1.7, and zlib 1.2.11. This was done by giving scons the arguments: --use-system-pcre --use-system-snappy --use-system-yaml --use-system-zlib --use-system-wiredtiger --use-system-stemmer.
As of 4.2.0, each of these now fail with errors like that given below. Is this an oversight, or is it intentional that 4.2.0 no longer works with these system packages?
(For some time, system package versions of asio, icu, boost, and mongo-c haven't worked, and some of these have their own tickets open with answers of mongoDB having required custom patches in these.)
scons: Reading SConscript files ... scons: warning: EnsureSConsVersion is ignored for development version File "/build/mongodb/src/mongodb-src-r4.2.0/SConstruct", line 31, in <module> scons: running with args /usr/bin/python /usr/bin/scons core --use-system-pcre --use-sasl-client --ssl --disable-warnings-as-errors --use-system-tcmalloc ... Checking for C function fallocate()... yes Checking for C function sync_file_range()... yes Checking for C header file x86intrin.h... yes Checking for C header file arm_neon.h... no KeyError: 'pcre': File "/build/mongodb/src/mongodb-src-r4.2.0/SConstruct", line 3901: variant_dir='$BUILD_DIR', File "/usr/lib/python3.7/site-packages/SCons/Script/SConscript.py", line 605: return _SConscript(self.fs, *files, **subst_kw) File "/usr/lib/python3.7/site-packages/SCons/Script/SConscript.py", line 286: exec(compile(scriptdata, scriptname, 'exec'), call_stack[-1].globals) File "/build/mongodb/src/mongodb-src-r4.2.0/src/SConscript", line 23: 'safeint', File "/usr/lib/python3.7/site-packages/SCons/Environment.py", line 224: return self.method(*nargs, **kwargs) File "/build/mongodb/src/mongodb-src-r4.2.0/src/third_party/SConscript", line 191: mods = thirdPartyEnvironmentModifications[lib]