gnu: Add libsepol.

* gnu/packages/selinux.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

gnu/local.mk

@@ -343,6 +343,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/sdl.scm				\
   %D%/packages/search.scm			\
   %D%/packages/security-token.scm		\
+  %D%/packages/selinux.scm			\
   %D%/packages/serialization.scm		\
   %D%/packages/serveez.scm			\
   %D%/packages/shells.scm			\

gnu/packages/selinux.scm

@@ -0,0 +1,71 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016, 2017 Ricardo Wurmus <rekado@elephly.net>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages selinux)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix utils)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages flex))
+
+;; Update the SELinux packages together!
+
+(define-public libsepol
+  (package
+    (name "libsepol")
+    (version "2.6")
+    (source (let ((release "20161014"))
+              (origin
+                (method url-fetch)
+                (uri (string-append "https://github.com/SELinuxProject/selinux/"
+                                    "archive/" release ".tar.gz"))
+                (file-name (string-append "selinux-" release ".tar.gz"))
+                (sha256
+                 (base32
+                  "1dpwynfb6n31928343blac4159g4jbrwxdp61q5yffmxpy3c3czi")))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:tests? #f ; tests require checkpolicy, which requires libsepol
+       #:test-target "test"
+       #:make-flags
+       (let ((out (assoc-ref %outputs "out")))
+         (list (string-append "PREFIX=" out)
+               (string-append "DESTDIR=" out)
+               (string-append "MAN3DIR=" out "/share/man/man3")
+               (string-append "MAN5DIR=" out "/share/man/man5")
+               (string-append "MAN8DIR=" out "/share/man/man8")
+               (string-append "LDFLAGS=-Wl,-rpath=" out "/lib")
+               "CC=gcc"))
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure)
+         (add-after 'unpack 'enter-dir
+           (lambda _ (chdir ,name) #t)))))
+    (native-inputs
+     `(("flex" ,flex)))
+    (home-page "https://selinuxproject.org/")
+    (synopsis "Library for manipulating SELinux policies")
+    (description
+     "The libsepol library provides an API for the manipulation of SELinux
+binary policies.  It is used by @code{checkpolicy} (the policy compiler) and
+similar tools, and programs such as @code{load_policy}, which must perform
+specific transformations on binary policies (for example, customizing policy
+boolean settings).")
+    (license license:lgpl2.1+)))