From https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239814
(hsn@sanatana:pts/2):myports/qtractor% make 14:02
/!\ qtractor-0.9.9: Makefile errors /!\
/bin/sh: Syntax error: "(" unexpected
*** Error code 2
Stop.
make: stopped in /home/hsn/gitports/myports/qtractor