Below the output of make on trisquel9 system(ubuntu 18), having zlib1g installed. As ls command output shows, there is a binary compiled but it errors, there is no sqlarfs binary compiled. Kernel version 4, a 64bit amd platform(asus laptop).

command line prompt: make
gcc -g -I. -D_FILE_OFFSET_BITS=64 -Wall -Werror   -DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION -c sqlite3.c
gcc -g -I. -D_FILE_OFFSET_BITS=64 -Wall -Werror  -o sqlar  sqlar.c sqlite3.o -lz
command line prompt: ls
total 10784K
   4K Makefile    20K sqlar.c    6964K sqlite3.c     4K README.md  1884K sqlite3.o
1404K sqlar       12K sqlarfs.c   488K sqlite3.h     4K codec.mk
+ 0 sqlar-src-4824e73896:

The sqlite project site is sanely documented, a very well conceived and structured project. Sadly there seem to be no alternative suggestions floating on sqlar and sqlarfs eleswhere to point to the Makefile eventual edits.

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