Add openal package (#3713)

Add pre-built binaries

packages/openal.rb

+require 'package'
+
+class Openal < Package
+  description 'OpenAL Soft is a software implementation of the cross-platform OpenAL 3D audio API appropriate for use with gaming applications and many other types of audio applications.'
+  homepage 'https://openal-soft.org/'
+  version '1.20.0'
+  source_url 'https://github.com/kcat/openal-soft/archive/openal-soft-1.20.0.tar.gz'
+  source_sha256 'ea1582337ce0344754cc6742b9a5da248fb971fb6fbcc592f843f765423d9265'
+
+  binary_url ({
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/openal-1.20.0-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/openal-1.20.0-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/openal-1.20.0-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/openal-1.20.0-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+    aarch64: 'eb94add03a88623b6915da3b531fea73b947c4caf49d89582a90737c6282ea53',
+     armv7l: 'eb94add03a88623b6915da3b531fea73b947c4caf49d89582a90737c6282ea53',
+       i686: 'e75fb5996dedacf7125def831f5ba8483de171d0b7061993acb6032508de94a1',
+     x86_64: '2bd3bff607f873b741093e459e80f0fe83a039fbcfbe4f45f7fd16891a46e571',
+  })
+
+  def self.build
+    Dir.chdir 'build' do
+      system 'cmake',
+             "-DCMAKE_INSTALL_PREFIX=#{CREW_PREFIX}",
+             "-DCMAKE_INSTALL_LIBDIR=#{ARCH_LIB}",
+             '-DCMAKE_BUILD_TYPE=Release',
+             '-DALSOFT_EXAMPLES=OFF',
+             '..'
+      system 'make'
+    end
+  end
+
+  def self.install
+    Dir.chdir 'build' do
+      system 'make', "DESTDIR=#{CREW_DEST_DIR}", 'install'
+    end
+  end
+end