Initial implementation of Ruby macros

These macros provide similar interfaces to Fedora's macros, but
are implemented in such a way that it dynamically gets the correct
information from the Ruby interpreter.

Author: Conan-Kudo

debbuild-macros.spec

@@ -41,6 +41,9 @@ Provides:       python3-deb-macros
 # Provides perl macros
 Provides:       debbuild-macros-perl
 Provides:       perl-deb-macros
+# Provides ruby macros
+Provides:       debbuild-macros-ruby
+Provides:       ruby-deb-macros
 # Provides golang macros
 Provides:       debbuild-macros-golang
 Provides:       go-deb-macros

macros.ruby

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: MIT
+
+%__ruby %{_bindir}/ruby
+
+%ruby_version %(%{__ruby} -r rbconfig -e 'print RbConfig::CONFIG["ruby_version"]')
+
+%ruby_libprefixdir %(%{__ruby} -rrbconfig -e 'puts RbConfig::CONFIG["rubylibprefix"]')
+%ruby_libdir %(%{__ruby} -rrbconfig -e 'puts RbConfig::CONFIG["rubylibdir"]')
+%ruby_libarchdir %(%{__ruby} -rrbconfig -e 'puts RbConfig::CONFIG["archdir"]')
+
+# This is the local lib/arch and should not be used for packaging.
+%ruby_sitedir %(%{__ruby} -rrbconfig -e 'puts RbConfig::CONFIG["sitedir"]')
+%ruby_sitelibdir %(%{__ruby} -rrbconfig -e 'puts RbConfig::CONFIG["sitelibdir"]')
+%ruby_sitearchdir %(%{__ruby} -rrbconfig -e 'puts RbConfig::CONFIG["sitearchdir"]')
+
+# This is the general location for libs/archs compatible with all
+# or most of the Ruby versions available in the repositories.
+%ruby_vendordir %(%{__ruby} -rrbconfig -e 'puts RbConfig::CONFIG["vendordir"]')
+%ruby_vendorlibdir %(%{__ruby} -rrbconfig -e 'puts RbConfig::CONFIG["vendorlibdir"]')
+%ruby_vendorarchdir %(%{__ruby} -rrbconfig -e 'puts RbConfig::CONFIG["vendorarchdir"]')