...
The only things that change for SCons builds (on the surface, anyway) are the configuration file and the script used to call the tests. Essentially, the environment is set in the configuration file and propagated through the test scripts as needed.
Other optional modifications to the configuration file described here can be used as normal.
> $SYSTESTS/src/exec/runSysTests.sh
becomes
> $SYSTESTS/src/exec/runSysTests_SCons.sh
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