Multiple INCLUDE statements in SQLRPGLE

I'm trying to stack multiple INCLUDE's to generate static SQL. The goal is
to move common code out of the application source and into copy books for
ease of development and maintenance. I have a need to include a JOIN in
some cases, and while I could simply have two versions of a single
consolidated copy book (one with the join and one without), that solution
doesn't appeal to me.

This is the first copy book:
EXEC SQL
SELECT cmcust INTO :cmcust FROM arp001

and this is the second:
WHERE cmstat = 'A'

and this is the third:
AND CMCLS = 'R'

...and there will be additional selections.

Here's what the code might look like:
/include qcpysrc,testcopy1
JOIN arp002 ON cmcust = nmcust
/include qcpysrc,testcopy2
/include qcpysrc,testcopy3
and cmcls = 'R' and nmtype = '2';

The source out of the preprocessor includes an /END-FREE and the compiler
tags the "-" in column 11 as an error even when the source member includes
a /FREE in it. The first SQL line isn't terminated so the preprocessor is
likely not looking for an /END-FREE.
Position 11 Token - was not valid. Valid tokens: FOR USE

When I've added a /FREE statement to these source members, the error still
appears. I've tried COPY as well; still getting errors in the preprocessor
output. Using RPGPPOPT(*LVL2) and V7R3M0.

I'll be grateful for any ideas!

Stay safe and stay healthy.

-reeve