---
name: "gprolog"
section: "1"
platform: "linux"
package: "gprolog"
version: "1.4.5.0-3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/gprolog"
---

# gprolog(1)

prolog interpreter and native code compiler

## NAME

gprolog - prolog interpreter and native code compiler

## SYNOPSIS

**gprolog**\
 **gplc** \[*options*\] *\[ filename \]*

## DESCRIPTION

**GNU Prolog** (gprolog) is a prolog interpreter and compiler to native code.

In its basic form, *gprolog* starts an interactive Prolog interpreter.  The *gplc* command compiles Prolog sources into object files, which may be linked to produce a stand-alone executable.

See the GNU Prolog manual (online) for how to use *gprolog* and *gplc* for writing Prolog programs.

## OPTIONS

- **--help**

  Print a summary of allowable options.

- **filename**

  (for *gplc*) compile the specified file.

## ENVIRONMENT

- **TRAILSZ**

  Size of the *trail stack*, needed to effect backtracking (undo bindings), defaults to 2097152 (2MB).

- **CSTRSZ**

  Size of the constraints stack, defaults to 2097152 (2MB).

- **GLOBALSZ**

  Size of the global stack, also known as the heap, defaults to 4194304 (4MB).

- **LOCALSZ**

  Size of the local stack, defaults to 2097152 (2MB).

## SEE ALSO

The YAP manual is available on a debian system in the **gprolog-doc** package, as the PDF file **/usr/share/doc/gprolog-doc/gprolog.pdf** and as an html document at the URL **http://gprolog.org/manual/html\_node/**

## AUTHOR

GNU Prolog is written and maintained by Daniel Diaz.

This manual page was compiled by Salvador Abreu \<spa@debian.org\>, based on the page for Yap Prolog written by Ralf Treinen \<treinen@debian.org\>.

## COPYRIGHT

Since this manpage is derived from the GNU Prolog manual it is subject to its licence, which is either the standard GPL-3 or LGPL-3 (dual-licensed).  Refer to the text of these licenses in a debian system in the directory **/usr/share/common-licences**