Add Gentoo pax_utils (#5040)

* Create pax_utils.rb

* Add pyelftools dep

* Add pyelftools

* Update pax_utils.rb

* Fix spacing.
Co-authored-by: Ed Reel <edreel@gmail.com>

packages/pax_utils.rb

+require 'package'
+
+class Pax_utils < Package
+  description 'ELF utils that can check files for security relevant properties'
+  homepage 'https://wiki.gentoo.org/wiki/Hardened/PaX_Utilities'
+  version '1.2.5'
+  compatibility 'all'
+  source_url 'https://dev.gentoo.org/~slyfox/distfiles/pax-utils-1.2.5.tar.xz'
+  source_sha256 '7ce7170ceed255bb47cac03b88bcbc636b0e412cac974e213e8017a1dae292ec'
+
+  binary_url ({
+     aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/pax_utils-1.2.5-chromeos-armv7l.tar.xz',
+      armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/pax_utils-1.2.5-chromeos-armv7l.tar.xz',
+        i686: 'https://dl.bintray.com/chromebrew/chromebrew/pax_utils-1.2.5-chromeos-i686.tar.xz',
+      x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/pax_utils-1.2.5-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+     aarch64: 'edc856ff6cc451358da1fb46a2a1023594f3d243cb1c30e5aa67c9ee9ed4dac6',
+      armv7l: 'edc856ff6cc451358da1fb46a2a1023594f3d243cb1c30e5aa67c9ee9ed4dac6',
+        i686: '9254843237e4bba47da7c4ec63ca7109e32ad7fee5822a1862fdddc789c280bb',
+      x86_64: '836d8627d96ed61608cb7bee423db753fc00c67600c62386e1df98d4529c35c9',
+  })
+
+  depends_on 'pyelftools'
+  depends_on 'libcap' => ':build'
+  depends_on 'libseccomp' => ':build'
+
+  def self.build
+    system "sed -i 's|/usr/bin/env python|/usr/bin/env python3|g' lddtree.py"
+    system "env CFLAGS='-pipe -flto=auto' CXXFLAGS='-pipe -flto=auto' LDFLAGS='-flto=auto' \
+    ./configure \
+    #{CREW_OPTIONS} \
+    --with-caps \
+    --with-seccomp \
+    --with-python"
+    system "make"
+  end
+  
+  def self.install
+    system "make DESTDIR=#{CREW_DEST_DIR} install"
+  end
+end

packages/pyelftools.rb

+require 'package'
+
+class Pyelftools < Package
+  description 'Pure-Python library for parsing and analyzing ELF files and DWARF debugging information.'
+  homepage 'https://github.com/eliben/pyelftools'
+  version '0.27'
+  compatibility 'all'
+  source_url 'file:///dev/null'
+  source_sha256 'e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855'
+
+  binary_url ({
+     aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/pyelftools-0.27-chromeos-armv7l.tar.xz',
+      armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/pyelftools-0.27-chromeos-armv7l.tar.xz',
+        i686: 'https://dl.bintray.com/chromebrew/chromebrew/pyelftools-0.27-chromeos-i686.tar.xz',
+      x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/pyelftools-0.27-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+     aarch64: '6948872decb8cbd4b9da384e6684fcf55736bd1fd998b94878f0d7896a0c32bb',
+      armv7l: '6948872decb8cbd4b9da384e6684fcf55736bd1fd998b94878f0d7896a0c32bb',
+        i686: '2781fb4f954695bdb05a0e5c6b2c36a3b88bc89ae5c001fca16c9daa2c839363',
+      x86_64: 'cd61b483e2268bfa2f09390710f44d183c8151b1e05d64dcb705ca297cda6b6d',
+  })
+
+  def self.install
+    system "pip3 uninstall -y pyelftools"
+    system "pip3 install --upgrade --no-warn-script-location pyelftools --prefix #{CREW_PREFIX} --root #{CREW_DEST_DIR}"
+  end
+end