gprolog

GNU Prolog compiler and interpreter

TLDR

Start GNU Prolog interpreter

$ gprolog

Load and run file

$ gprolog --consult-file [program.pl]

Compile to executable

$ gplc [program.pl] -o [program]

Run query from command line

$ gprolog --query-goal "[goal]"

SYNOPSIS

gprolog [options]gplc [options] files

GNU Prolog is a Prolog compiler with constraint solving over finite domains. It compiles Prolog to native code and provides an interactive interpreter.GNU Prolog supports ISO Prolog with extensions for constraint logic programming, making it suitable for combinatorial problems, scheduling, and AI applications.

PARAMETERS

--consult-file file

Load Prolog file at startup.

--query-goal goal

Execute goal after loading.

--init-goal goal

Execute initialization goal.

--entry-goal goal

Entry point goal.

--no-top-level

Exit after executing goals.

INTERPRETER COMMANDS

$ ?- consult('file.pl').    % Load file
?- listing.               % Show predicates
?- halt.                  % Exit
?- trace.                 % Enable tracing

COMPILING

$ # Compile to executable
gplc program.pl -o program

# Produce WAM file
gplc -W program.pl

# Strip executable
gplc program.pl -o program -s

# Compile without top-level
gplc --no-top-level program.pl -o program

CAVEATS

Syntax differs slightly from SWI-Prolog. Native compilation adds startup complexity. Constraint solving requires finite domain declarations. Interactive debugging requires trace mode.

HISTORY

GNU Prolog was created by Daniel Diaz at INRIA, first released in 1996. It emphasizes native code compilation and constraint solving, distinguishing it from interpreted Prolog systems.