You’re probably right. I did a search for “glk zcode interpreter” and found a reference to the glk version of frotz on this Gargoyle page.
Try this:
mkdir ifstuff
cd ifstuff
git clone https://github.com/erkyrath/glulxe
git clone https://github.com/erkyrath/remglk
cd remglk
make
cd ../glulxe
Open Makefile in the text editor of your choice.
You'll see five triplets of variables at the top, four of which are commented out with # marks. These tell glulxe which glk library to use.
Comment out the cheapglk ones and uncomment the remglk ones. They look like this:
GLKINCLUDEDIR = ../remglk
GLKLIBDIR = ../remglk
GLKMAKEFILE = Make.remglk
Save the file and exit your text editor.
make
mv glulxe glulxer