RUBY-BUILD(1) ruby-build Manual RUBY-BUILD(1) NAME ruby-build - Download, compile, and install a version of Ruby SYNOPSIS ruby-build [-dvpk] <definition> <prefix> [-- <configure-args>...] ruby-build {--list|--definitions} ruby-build --resolve <version> ruby-build --version DESCRIPTION ruby-build downloads, compiles, and installs a Ruby version named by the definition argument into the location specified by prefix. The definition argument can be a path to a file on disk, in which case it is sourced into ruby-build as a bash script. Optionally, extra Ruby configure-args may be listed after "--" and will get forwarded to the ./configure invocation. By default, all compile output is redirected to a log file at $TM- PDIR/ruby-build.*.log. Activate the verbose mode to skip the log file and print everything to standard streams. RUBY VERSIONS When listing "latest" Ruby versions, such as in --list output, ruby-build only knows of Ruby versions that are bundled with this project. That means that when a new Ruby version comes out, ruby-build will not know about it immediately; you will have to upgrade ruby-build before you can use it to install the new Ruby version. RUBY IMPLEMENTATIONS ruby-build ships with definitions for the following Ruby implementations: * CRuby, also known as "MRI": denoted by version numbers in form of "X.Y.Z". This is the main Ruby implementation that most people use. * "jruby": High-performance Ruby implementation with real threading built on top of the Java virtual machine (JVM). * "mruby": Lightweight Ruby for microcontrollers. * "picoruby": Alternative mruby implementation for one-chip microcon- trollers. * "truffleruby": The Native standalone distribution of TruffleRuby, an implementation of Ruby on top of GraalVM's Truffle framework. * "truffleruby+graalvm": The JVM standalone distribution of TruffleRuby. The definition argument may optionally start with "ruby-", in which case it resolves to a CRuby that matches the version number that follows. The defi- nition argument may also be a name of one of the alternative Ruby implemen- tations, in which case the latest version of that implementation will be installed. OPTIONS -l, --list List latest stable releases for each Ruby --definitions List all local definitions, including outdated ones --resolve Print the definition name of the latest stable Ruby version matching the version argument --version Show version of ruby-build -d, --dir Install the Ruby in the prefix/definition destination instead of di- rectly in prefix -v, --verbose Verbose mode: forward all build output to stdout/stderr -p, --patch Apply a patch from stdin before building -k, --keep Do not remove source tree after installation -4, --ipv4 Resolve names to IPv4 addresses only -6, --ipv6 Resolve names to IPv6 addresses only EXAMPLES Install a Ruby version while tweaking some configuration options: $ ruby-build 3.4.9 /path/to/destination -- --disable-install-doc --with-openssl-dir=/opt/openssl Install a Ruby version to ~/.rubies/ruby-3.4.9: $ ruby-build --dir ruby-3.4.9 ~/.rubies Install the latest Ruby 3.x version to ~/.rubies/ruby-3.x.y: $ ruby-build --dir ruby-3 ~/.rubies Install a Ruby version to ~/.rbenv/versions/3.3.11: $ ruby-build --dir 3.3.11 ~/.rbenv/versions Usage as rbenv plugin, accomplishes the same as the previous example: $ rbenv install 3.3.11 ENVIRONMENT VARIABLES TMPDIR The location to write temporary files on disk RUBY_BUILD_BUILD_PATH (default: a timestamped subdirectory of TMPDIR) The build location for downloading source files to and compiling RUBY_BUILD_CACHE_PATH (default: "~/.rbenv/cache" if invoked as rbenv plu- gin) Where to cache downloaded package files RUBY_BUILD_HTTP_CLIENT (default: first tool found in PATH) One of "aria2c", "curl", or "wget" to use for downloading RUBY_BUILD_ARIA2_OPTS Additional options to pass to aria2c for downloading RUBY_BUILD_CURL_OPTS Additional options to pass to curl for downloading RUBY_BUILD_WGET_OPTS Additional options to pass to wget for downloading RUBY_BUILD_MIRROR_URL (default: a sponsored Amazon CloudFront mirror) Custom mirror URL root to download packages from RUBY_BUILD_MIRROR_PACKAGE_URL Custom complete mirror URL RUBY_BUILD_SKIP_MIRROR Bypass the download mirror and fetch all package files from their orig- inal URLs RUBY_BUILD_ROOT (default: "share/ruby-build" within ruby-build install lo- cation) Custom build definition directory RUBY_BUILD_TARBALL_OVERRIDE Override the URL to fetch the ruby tarball from, optionally followed by "#<checksum>" RUBY_BUILD_DEFINITIONS Paths to search for build definitions in addition to RUBY_BUILD_ROOT CC Path to the C compiler RUBY_CFLAGS Additional CFLAGS options to use for Ruby compilation CONFIGURE_OPTS Additional "./configure" arguments MAKE (default: "make") Custom make command (e.g., "gmake") MAKE_OPTS, MAKEOPTS Additional arguments for "make" MAKE_INSTALL_OPTS Additional arguments for "make install" RUBY_CONFIGURE_OPTS Additional "./configure" arguments that apply only to Ruby source RUBY_MAKE_OPTS Additional make arguments that apply only to Ruby source RUBY_MAKE_INSTALL_OPTS Additional "make install" arguments that apply only to Ruby source NO_COLOR (default: allow colors when connected to terminal) Disable ANSI colors in output CLICOLOR_FORCE Use ANSI colors in output even when not connected to a terminal NOTES * https://github.com/rbenv/ruby-build#readme * https://github.com/rbenv/ruby-build/wiki * https://github.com/rbenv/ruby-build/discussions AUTHOR Mislav MarohniA ruby-build 20260716 2026-05-07 RUBY-BUILD(1)
NAME | SYNOPSIS | DESCRIPTION | RUBY VERSIONS | RUBY IMPLEMENTATIONS | OPTIONS | EXAMPLES | ENVIRONMENT VARIABLES | NOTES | AUTHOR
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