https://bugzilla.redhat.com/show_bug.cgi?id=1701995
--- Comment #5 from Richard Shaw hobbes1069@gmail.com --- I'm working on the official review now but I went ahead and poked around the CMake config and added a patch to properly install the library without using a workaround. The patch should be submitted upstream.
https://hobbes1069.fedorapeople.org/libsquish-1.15-2.fc29.src.rpm