Regarding PCTCompile.multiCompile (COMPILER:MULTI-COMPILE flag)...

[lievendf]

There's still (to me at least) some uncertainty whether this flag can reliably be used during an incremental compile, i.e. starting from a set of r-code from compiled sources together with a .pct folder containing metadata of a previous build.
When doing a full "clean" compile (no previous r-code), I believe setting multiCompile = true is safe.
But is this also always the case when doing an incremental compile, when PCTCompile uses the existing r-code and metadata to decide what files need recompiling?
Can I just set the flag to true in all cases and be safe?

[gquerret]

If you want to be on the safe side, you should do a full compilation. But if you want to use incremental compilation, you should set multiCompile to false.