Ruby-2.6.1

#### Beyond Linux® From Scratch - Version 2019-02-27

### Chapter 13. Programming

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# Ruby-2.6.1

## Introduction to Ruby

The Ruby package contains the Ruby development environment. This is useful for object-oriented scripting.

This package is known to build and work properly using an LFS-8.4 platform.

### Package Information

- Download (HTTP): http://cache.ruby-lang.org/pub/ruby/2.6/ruby-2.6.1.tar.xz

- Download MD5 sum: 8ef05a53e3767d03688e5c55f915ce80

- Download size: 11 MB

- Estimated disk space required: 411 MB, with checks (add 279 MB for C API docs)

- Estimated build time: 1.2 SBU (using parallelism=4; add 4.1 SBU for tests; add 0.6 SBU for C API docs)

### Ruby Dependencies

#### Optional

Berkeley DB-5.3.28, Doxygen-1.8.15, Graphviz-2.40.1, Tk-8.6.9, Valgrind-3.14.0, and YAML-0.2.1

User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/ruby

## Installation of Ruby

Install Ruby by running the following command:

    ./configure --prefix=/usr   \
                --enable-shared \
                --docdir=/usr/share/doc/ruby-2.6.1 &&
    make

Optionally, build the CAPI documents by running the following commands:

    make capi

To test the results, issue: make check. There are 20248 tests. One test, ungetbyte, is known to fail. If the tests are run in a directory that has a world writable component (e.g. /tmp) then several additional tests may fail and the tests terminate after 25 failures.

Now, as the `root` user:

    make install

## Command Explanations

`--enable-shared`: This switch enables building of the `libruby` shared library.

`--disable-install-doc`: This switch disables building and installing rdoc indexes and C API documents.

`--disable-install-rdoc`: This switch disables building and installing rdoc indexes.

`--disable-install-capi`: This switch disables building and installing C API documents.

## Contents

Installed Programs: erb, gem, irb, rake, rdoc, ri, and ruby
Installed Libraries: libruby.so and libruby-static.a
Installed Directories: /usr/include/ruby-2.6.0 /usr/lib/ruby, /usr/share/doc/ruby-2.6.1 and /usr/share/ri

### Short Descriptions

erb | is Tiny eRuby. It interprets a Ruby code embedded text file.
gem | command for RubyGems - a sophisticated package manager for Ruby.
irb | is the interactive interface for Ruby.
rake | a make-like build utility for Ruby.
rdoc | generates Ruby documentation.
ri | displays documentation from a database on Ruby classes, modules, and methods.
ruby | is an interpreted scripting language for quick and easy object-oriented programming.
`libruby.so` | contains the API functions required by Ruby.

Last updated on 2019-02-15 15:01:29 -0600

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