Help compiling for 32bit x86/ARM Pi4-64bit - liblua wrong version

[w84death]

I'm trying to compile it for my older computer. Everything goes OK until the end:

/usr/bin/ld: skipping incompatible /home/kj/Code/TRSE/libs/lua//liblua.a when searching for -llua /usr/bin/ld: cannot find -llua: No such file or directory collect2: error: ld returned 1 exit status make: *** [Makefile:1822: trse] Error 1

As I understand liblua.a is 64bit. I tried to find the binary for it but they all in 64bit since LUA 5.1.

UPDATE: ended in the same place on Raspberry Pi 4 / 64bit

How could I make it work?