As of version 7.7.23 we have now SWI-Prolog running on Android under termux. With the exception of JPL it is passing all tests, including saved states.

SWI-Prolog is available as a standard package and can be installed using

pkg install swi-prolog

After installation you can run it by typing this in the termux terminal:

$ swipl
Welcome to SWI-Prolog (threaded, 32 bits, version 7.7.23)
SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software.
Please run ?- license. for legal details.

For online help and background, visit http://www.swi-prolog.org
For built-in help, use ?- help(Topic). or ?- apropos(Word).

?- write('Hello, swipl on Android!').
Hello, swipl on Android!
true.

Building it yourself

There are two routes for building the Termux package. One is to use a Docker container and the other is to compile it directly inside Termux.

Building using Docker

SWI-Prolog for android is built with the docker file used by termux to build packages.

The forked termux-packages repository contains the scripts to build the SWI-Prolog deb files for Android termux, as well as ossp-uuid.

The run-docker script below downloads and runs the docker container, which in turn builds SWI-Prolog and all its dependencies. You need docker installed and running on your build host.

To build the deb files yourself, do the following:

git clone -b swi-prolog https://github.com/erlanger/termux-packages
cd termux-packages
./scripts/run-docker.sh ./build-package.sh -a arm -f swi-prolog

You should now have the `.deb files in the debs` directory.

Unsupported packages

bdb, odbc, space

Building inside Termux

Prepare

pkg install clang
    pkg install libandroid-execinfo libarchive libcrypt libgmp libyaml ncurses openssl ossp-uuid readline zlib pcre2

Now download SWI-Prolog, go into the root directory of the distribution and build using

mkdir build
    cd build
    cmake .. -G Ninja -DPOSIX_SHELL=${PREFIX}/bin/sh  -DSWIPL_TMP_DIR=${PREFIX}/tmp -DSYSTEM_CACERT_FILENAME=${PREFIX}/etc/tls/cert.pem
    ninja

Test results

All tests passing.

Welcome to Termux!

Wiki:            https://wiki.termux.com
Community forum: https://termux.com/community
IRC channel:     #termux on freenode
Gitter chat:     https://gitter.im/termux/termux
Mailing list:    termux+subscribe@groups.io

Search packages:   pkg search <query>
Install a package: pkg install <package>
Upgrade packages:  pkg upgrade
Learn more:        pkg help
$ swipl
Welcome to SWI-Prolog (threaded, 32 bits, version 7.7.23)
SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software.
Please run ?- license. for legal details.

For online help and background, visit http://www.swi-prolog.org
For built-in help, use ?- help(Topic). or ?- apropos(Word).

?- test_installation.
% SWI-Prolog test suite.
% To run all tests run ?- test.
%
Running test set "syntax" ............................... done.
Running test set "write_test" .............. done.
Running test set "format_test" ......... done.
Running test set "unify" .. done.
Running test set "occurs_check" ...... done.
Running test set "unifiable" ... done.
Running test set "arithmetic" ...................................... done.
Running test set "arithmetic_functions"  done.
Running test set "floattest" ........ done.
Running test set "gmp" .............................................................
 done.
Running test set "chars" .. done.
Running test set "wchars" .. done.
Running test set "depth_limit" ..... done.
Running test set "type_test" .... done.
Running test set "meta" ............... done.
Running test set "avar" ........................... done.
Running test set "gvar" ..... done.
Running test set "copy_term" .............. done.
Running test set "term_hash" ........ done.
Running test set "cyclic" .......... done.
Running test set "cleanup" ............. done.
Running test set "term" ........... done.
Running test set "list" ........... done.
Running test set "sets" ......... done.
Running test set "atom_handling" ........................ done.
Running test set "string_handling" ..... done.
Running test set "proc" ........ done.
Running test set "cl" ........... done.
Running test set "record" ....... done.
Running test set "compiler" ....... done.
Running test set "flag" . done.
Running test set "update" ... done.
Running test set "gc" ........ done.
Running test set "control" ......... done.
Running test set "exception" ........ done.
Running test set "term_atom" .. done.
Running test set "os" .. done.
Running test set "io" .. done.
Running test set "popen" ... done.
Running test set "timeout" . done.
Running test set "file" ............. done.
Running test set "unicode_file" .... done.
Running test set "seek" . done.
Running test set "load_program" . done.
Running test set "ctype" ...... done.
Running test set "thread" ....... done.
Running test set "mutex" ... done.
Running scripts from unprotected .............................. done
Running scripts from core ..........................................................
....................................................................................
....................................................................................
....................................................................................
....................................................................................
....................................................................................
....................................................................................
....................................................................................
....................................................................................
....................................................................................
....................................................................................
....................................................................................
................................... done
Running scripts from attvar .. done
Running scripts from library .......................................................
....................................................................................
....................................................................................
..................... done
Running scripts from charset . done
Running scripts from eclipse
% Running ECLiPSe tests from file /data/data/com.termux/files/usr/lib/swipl/test/Tes
ts/eclipse/string_tests.tst
....................................................................................
...................................................................................
% Finished tests from file /data/data/com.termux/files/usr/lib/swipl/test/Tests/ecli
pse/string_tests.tst
% 167 tests found.
% 167 tests succeeded.
. done
Running scripts from clp . done
Running scripts from GC ......................... done
Running scripts from thread ........................................................
............................ done
Running scripts from save .... done
Testing package chr:chr ................ Passed 4.59 sec.
Testing package clib:cgi ............... Passed 0.55 sec.
Testing package clib:crypt ............. Passed 0.55 sec.
Testing package clib:memfile ........... Passed 0.59 sec.
Testing package clib:process ........... Passed 0.91 sec.
Testing package clib:readutil .......... Passed 0.46 sec.
Testing package clib:socket ............ Passed 5.68 sec.
Testing package clib:stream ............ Passed 0.50 sec.
Testing package clib:time .............. Passed 1.32 sec.
Testing package clib:uri ............... Passed 0.59 sec.
Testing package http:cgi_stream ........ Passed 1.71 sec.
Testing package http:http .............. Passed 3.99 sec.
Testing package http:json .............. Passed 2.01 sec.
Testing package http:multipart ......... Passed 1.95 sec.
Testing package http:proxy ............. Passed 2.18 sec.
Testing package http:websocket ......... Passed 1.99 sec.
Testing package pengines:pengines ...... Passed 6.77 sec.
Testing package pengines:term_html ..... Passed 1.06 sec.
Testing package protobufs:protobufs .... Passed 0.31 sec.
Testing package RDF:rdf ................ Passed 1.11 sec.
Testing package RDF:write .............. Passed 1.32 sec.
Testing package semweb:con ............. Passed 1.22 sec.
Testing package semweb:litmap .......... Passed 1.68 sec.
Testing package semweb:load ............ Passed 2.49 sec.
Testing package semweb:ntriples ........ Passed 2.22 sec.
Testing package semweb:rdf11 ........... Passed 1.76 sec.
Testing package semweb:rdf_db .......... Passed 1.59 sec.
Testing package semweb:subprop ......... Passed 9.29 sec.
Testing package semweb:turtle2 ......... Passed 2.57 sec.
Testing package semweb:turtle .......... Passed 12.53 sec.
Testing package sgml:sgml .............. Passed 0.58 sec.
Testing package sgml:sgml_write ........ Passed 0.70 sec.
Testing package sgml:xsd ............... Passed 0.66 sec.
Testing package zlib:zlib .............. Passed 1.94 sec.
Testing package pcre:pcre .............. Passed 0.57 sec.
Testing package yaml:yaml .............. Passed 0.71 sec.
Testing package ssl:ssl ................ Passed 7.60 sec.
All tests passed
true.

?-