make: "opt-debug-file.mk" line 43: This goes to stderr only, once.
make: "opt-debug-file.mk" line 45: This goes to stderr only, once.
make: "opt-debug-file.mk" line 47: This goes to stderr, and in addition to the debug log.
CondParser_Eval: ${:!cat opt-debug-file.debuglog!:Maddition:[#]} != 1
lhs = 1.000000, rhs = 1.000000, op = !=
make: Missing delimiter for modifier ':S'
make: Missing delimiter for modifier ':S'
make: Missing delimiter for modifier ':S'
CondParser_Eval: ${:!cat opt-debug-file.debuglog!:Mdelimiter:[#]} != 1
lhs = 1.000000, rhs = 1.000000, op = !=
Cannot open debug file "/nonexistent-6f21c672-a22d-4ef7/opt-debug-file.debuglog"
exit status 2