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Rakudo

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This is Rakudo, a Raku compiler for the MoarVM and JVM.

Rakudo is Copyright © 2008-2020, The Perl Foundation. Rakudo is distributed under the terms of the Artistic License 2.0. For more details, see the full text of the license in the file LICENSE.

This directory contains only the Rakudo compiler itself; it does not contain any of the modules, documentation, or other items that would normally come with a full Raku distribution. If you're after more than just the bare compiler, please download the latest Rakudo Star package.

Note that different backends implement slightly different sets of features. For a high-level overview of implemented and missing features, please visit the features page on raku.org.

Recent changes and feature additions are documented in the

docs/ChangeLog

text file.

To receive important notifications from the core developer team, please subscribe to the p6lert service using the RSS feed, twitter, or the p6lert commandline script.

Building and Installing Rakudo

Build StatusBuild Status Build Status

See the INSTALL.txt file for detailed prerequisites and build and installation instructions.

The general process for building is running

perl Configure.pl

with the desired configuration options (common options listed below), and then running

make

or

make install

. Optionally, you may run

make spectest

to test your build on Roast, the Official Raku test suite. To update the test suite, run

make spectest\_update

.

Installation of Rakudo simply requires building and running

make install

. Note that this step is necessary for running Rakudo from outside the build directory. But don't worry, it installs locally by default, so you don't need any administrator privileges for carrying out this step.

Configuring Rakudo to run on MoarVM

To automatically download, build, and install a fresh MoarVM and NQP, run:

$ perl Configure.pl --gen-moar --gen-nqp --backends=moar

Please be aware, that this will install MoarVM and NQP into your given --prefix before Configure.pl exits.

Alternatively, feel free to git clone https://github.com/perl6/nqp and https://github.com/MoarVM/MoarVM manually and install them individually.

Configuration flags can be passed to MoarVM's Configure.pl using the --moar-option flag. For example, if you wish to use Clang when GCC is the default compiler selected for your OS, use the --compiler flag:

$ perl Configure.pl --gen-moar --moar-option='--compiler=clang' \ --gen-nqp --backends=moar

If the compiler you want to use isn't known by MoarVM or you have multiple versions of the same compiler installed, the --cc flag can be used to pass its exact binary:

$ perl Configure.pl --gen-moar --moar-option='--cc=egcc' \ --gen-nqp --backends=moar

Custom optimization and debugging levels may also be passed through:

$ perl Configure.pl --gen-moar --moar-option='--optimize=0 --debug=3' \ --gen-nqp --backends=moar

For more information on how MoarVM can be configured, view MoarVM's Configure.pl.

Configuring Rakudo to run on the JVM

Note that to run Rakudo on JVM, JDK 1.8 must be installed. To automatically download, build, and install a fresh NQP, run:

$ perl Configure.pl --gen-nqp --backends=jvm

If you get a

java.lang.OutOfMemoryError: Java heap space

error building rakudo on the JVM, you may need to modify your NQP runner to limit memory use. e.g. edit the nqp-j / nqp-j.bat executable (found wherever you installed to, or in the

install/bin

directory) to include

-Xms500m -Xmx3g

as options passed to java. Alternatively, you can set

JAVA\_OPTS

env var; e.g.

export JAVA\_OPTS="-Xmx51200000000"

Please be aware, that this will install NQP into your given --prefix before Configure.pl exits.

Alternatively, feel free to git clone https://github.com/perl6/nqp manually and install it individually.

Multiple backends at the same time

By supplying combinations of backends to the

--backends

flag, you can get two or three backends built in the same prefix. The first backend you supply in the list is the one that gets the

perl6

name as a symlink, and all backends are installed separately as

perl6-m

or

perl6-j

for Rakudo on MoarVM, or JVM respectively.

The format for the

--backends

flag is:

$ perl Configure.pl --backends=moar,jvm $ perl Configure.pl --backends=ALL

Testing

Ensure the test suite is installed

The roast test suite is installed as the t/spec directory under your rakudo directory. If your installed rakudo source directory doesn't have t/spec installed, then you can clone it like this:

cd $YOUR\_RAKUDO\_SRCDIR git clone https://github.com/perl6/roast.git t/spec

Note the rakudo code includes an entry in its .gitignore file so git will ignore any content under t/spec.

Now you can run tests in the rakudo directory.

Running tests

Run the full spectest:

$ make spectest # \<== takes a LONG time!!

To run a single test, one must use

make

because of the tooling required to run the spectests. For example:

$ make t/spec/S03-operators/comparison.t

Run all tests in one S* directory with a sh script. One example:

$ cat run-tests.sh #!/bin/sh # specify the desired directory: D='t/spec/S26-documentation' # collect the individual files F=$(ls $D/\*t) # and run them for f in $F do echo "Testing file '$f'" make $f done echo "All tests in dir '$D' have been run."

That can be written as a one-liner:

for f in $(ls t/spec/S26-documentation/\*t); do make "$f"; done

Where to get help or answers to questions

There are several mailing lists, IRC channels, and wikis available with help for Raku and Rakudo. Figuring out the right one to use is often the biggest battle. Here are some rough guidelines:

The central hub for Raku information is raku.org. This is always a good starting point.

If you have a question about Raku syntax or the right way to approach a problem using Raku, you probably want the “[email protected]” mailing list or the irc.freenode.net/#raku IRC channel. The perl6-users list is primarily for the people who want to use Raku to write programs, so newbie questions are welcomed there. Newbie questions are also welcome on the #raku channel; the Rakudo and Raku development teams tend to hang out there and are generally glad to help. You can follow @perl6organd on Twitter, there's a Raku news aggregator atPlanet Perl 6.

Questions about NQP can also be posted to the #raku IRC channel. For questions about MoarVM, you can join #moarvm on freenode.

Reporting bugs

See https://rakudo.org/bugs

Submitting patches

If you have a patch that fixes a bug or adds a new feature, please create a pull request using github's pull request infrastructure.

See our contribution guidelines for more information.

Line editing and tab completion

If you would like simple history and tab completion in the perl6 executable, you need to install the Linenoise module. The recommended way to install Linenoise is via zef:

$ zef install Linenoise

An alternative is to use a third-party program such as rlwrap.

AUTHOR

See CREDITS for the many people that have contributed to the development of the Rakudo compiler.

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