graphics/sane-epkowa Undefined symbol "isfdtype"

[Daniel Morante]

I installed `graphics/sane-epkowa` and added my scanner's (Epson 
GT-1500) vendor and product id "usb 0x04b8 0x0133" to 
`/usr/local/etc/sane.d/epkowa.conf`.   The scanner is "supported by the 
epkowa backend plus non-free interpreter" according to 
http://www.sane-project.org/lists/sane-backends-external.html.

When I run `scanimage -L` I get the following error:

ld-elf.so.1: /usr/local/lib/sane/libsane-epkowa.so.1: Undefined symbol 
"isfdtype"

Occurs with both the package or building from ports.

Looks like it trying to use a Linux only system call?  Not sure how 
that's possible.  This is 12.2-RELEASE-p4 amd64.