$ cd /usr/src
$ git clone https://github.com/fragglet/lhasa.git
$ cd lhasa
$ autoreconf -fiv
$ cd /tmp/lhasa
$ /usr/src/lhasa/configure
$ make
/usr/src/lhasa/src/main.c:26:10: fatal error: lib/lha_arch.h: No such file or directory
26 | #include "lib/lha_arch.h"
| ^~~~~~~~~~~~~~~~