How To Download Prolog On Mac

Prolog download free

1. How to Run Prolog

The examples in this Prolog Tutorial were developed using either Quintus Prologrunning on Digital Equipment Corporation MicroVAXes (ancient history) or using SWI Prologon either Sun Sparks (long ago), in Windows on a PC (a while ago), or (recently) under the OS X operating system on a Mac.

Turbo prolog free download - ProLog, SWI Prolog (64-bit), Visual Prolog, and many more programs. I am trying to install prolog on Mac OS X 10.4.11. I just downloaded fink because I think that that should help me and I am trying to get either: Package swi-prolog-5.8.1-2. Package gprolog-1.3.1-1. But I am not having any luck. Here is what I was doing:% fink install swi-prolog-5.8.1-2 Information about 1723 packages read in 0 seconds.

Other important prolog systems (Borland, XSB, LPA, Minerva ...) have been used for development and testing over the past 25 years. A new section of this tutorial is planned to describe prolog systemsin a general way, but that section is not available at this time.

SWI-Prolog's website has lots of information about SWI-Prolog, a downloadarea, and documentation. The upkeep for SWI-Prolog is excellent. The link ...

SWI-PrologHome Page (current as of August 2006)

The examples in this tutorial use a simplified form of interaction witha typical Prolog interpreter. The sample programs should executesimilarly on any system using an Edinburgh-style Prolog interpreter orinteractive compiler.

To start an interactive SWI-Prolog session under Unix, open a terminal window andtype the approprite command (indicated in the installation instructions). For example, on our Mac this is ...

$ /opt/local/bin/swipl

{We never type that last line: we employ Unix source files to start SWI-Prolog using additional command line arguments and/or switches for special purposes.The reader could explore this possibility soon after learning more prolog basics.}

Under Windows, SWI-Prolog installs a start icon that can be double-clickedto initiate the interpreter. The interpreter then starts in its own command window.

A startup message or banner may appear, and that will soon be followed bya goal prompt looking similar to the following

?- _
Interactive goals in Prolog are entered by the user following the '?- ' prompt.

Download Swi Prolog Latest Version

Many Prologs have command-line help information. SWI Prolog hasextensive help information. This help is indexed and guides the user. Tolearn more about it, try

Swi Prolog Free Download

?- help(help).
Notice that all of the displayed symbols need to be typed in, followedby a carriage return.

To illustrate some particular interactions with prolog, consider thefollowing sample session. Each file referred to is assumed to be a localfile in the user's account, which was either created by the user, obtainedby copying directly from some other public source, or obtained by savinga text file while using a web browser. The way to achieve the latter iseither to follow a URL to the source file and then save, or to select textin a Prolog Tutorial web page, copy it, paste into a text editor windowand then save to file. The comments /* ... */ next to goals are referredto in the notes following the session.

The comments appearing at the right at various spots in a samplesession were added with a text processor. They also serve as referencesignposts for the notes which appear below. We discuss several points now, while other details will be deferred to later sections.

Notes:

1. A Prolog goal is terminated with a period '.' In this case the goalwas to load a program file. This 'bracket' style notation dates back tothe first Prolog implementations. Several files can be chain loaded bylisting the filenames sequentially within the brackets, separated by commas.In this case, the file's name is 2_1.pl (programs corresponding to Section7.1 of this tutorial), which contains two prolog programs for calculatingthe factorial of a positive integer. The actual program in the file isdiscussed in Section 2.1. The program file was located in the current directory.If it had not been, then the path to it would have to have been specifiedin the usual way.

2. The built-in predicate 'listing' will list the program in memory --in this case, the factorial program. The appearance of this listing isa little different than the appearance of the source code in the file,which we will see in Section 2.1. Actually, Quintus Prolog compiles programsunless predicates are declared to be dynamic. Compiled predicates do nothave an interactive source listing that can be supplied by a 'listing'goal. So, in order to illustrate this Prolog interpreter feature, the predicateswere declared as dynamic in the source code before this sample run.

3. The goal here, 'factorial(10,What)', essentially says 'the factorialof 10 is What?'. The word 'What' begins with an upper-case letter, denotinga logical variable. Prolog satisfies the goal by finding the value of thevariable 'What'.

Windows

4. Both 'programs' now reside in memory, from the two source files 2_1.pland 2_7.pl. The 2_7.pl file has many list processing definitions in it.(See Section 2.7.)

5. In the program just loaded is a definition of the logical predicate'takeout'. The goal 'takeout(X,[1,2,3,4],Y)' asks that X be taken out oflist [1,2,3,4] leaving remainder list Y, in all possible ways. There arefour ways to do this, as shown in the response. The 'takeout' predicateis discussed in Section 2.7. Note, however, how Prolog is prodded to produceall of the possible answers: After producing each answer, Prolog waitswith a cursor at the end of the answer. If the user types a semicolon ';', Prolog will look for a next answer, and so on. If the user just hitsEnter, then Prolog stops looking for answers.

6. A compound or conjunctive goal asks that two individual goals besatisfied. Note the arithmetic goal (built-in relation), 'X>3'. Prologwill attempt to satisfy these goals in the left-to-right order, just asthey would be read. In this case, there is only one answer. Note the useof an anonymous variable '_' in the goal, for which no binding is reported('don't-care variable').

7. The 'halt' goal always succeeds and returns the user to the operatingsystem.

Prolog Tutorial Contents

TL;DR for 'Install development version on Linux'

With bash.

Building is done using cmake, and it uses ninja-build to compute dependencies and build.

  • CMAKE must have been installed (on Fedora this is done with `dnf install cmake` but your system may have some different package tool than dnf, for example apt)
  • ninja-build must have been installed (on Fedora: `dnf install ninja-build`)

Suppose we want to install SWIPL into this directory:

You can also install it somewhere in your home directory, or at some other place, it's up to you. If you install it in your home directory, there is no need to change to user root below.

As root:

You may want to prepare the installation directory:

As non-root, in your home directory

By default the system configures all features. In particular, GMP, ODBC, JPL, graphics.

Soon you will see:

Then actually compile and run the tests:

(Note that if you want to compile the Prolog-Java bridge 'JPL', you will have to have a discoverable JDK on the system; for testing you will need the hamcrest jar and junit jar but this is going too far now)

Then, install as root:

To make sure SWI-Prolog is found on-PATH, add the following script as 'logic.sh' to `/etc/profile.d/` (this should work but may depend on the system) :

And create the symlink corresponding to `/usr/local/logic/swipl`, linking to `/usr/local/logic/swipl/swiplexe_8.3.7` or similar. As user root:

Check using tree

Drop root privileges. As non-root:

Build script

Here is a little bash script I use to set up a some SWIPL versions I used for development. It's too complex for general use, but it's all-in-one and rather foolproof:

  • Grab it
  • Modify the values at the top to your liking:
    • system_install_dir
    • toplevel_dir_fq
  • The command to execute is:
    • `swiprologpull.sh clone system` to download the SWI-Prolog distro
    • `swiprologpull.sh build system` to build the SWI-Prolog distro

It will ask you before letting loose:

Not that to compile & test JPL; the Java-Prolog bridge, you need to have a valid Java JDK on your system and the above script needs to find the jars for hamcrest and junit in a directory called jars at the same level as the directory into which the SWI-Prolog distribution is cloned:

You get those jars from