argp-standalone@1.3: new package (#7014)

Adds a package for the standalone version of the argp argument parsing
interface from glibc for unix-style command options.

var/spack/repos/builtin/packages/argp-standalone/argp-fmtstream.h.patch

+--- argp-fmtstream.h.orig	2003-12-11 09:37:05.000000000 +0100
++++ argp-fmtstream.h	2011-08-12 11:56:43.000000000 +0200
+@@ -192,7 +192,7 @@
+ extern int _argp_fmtstream_ensure (argp_fmtstream_t __fs, size_t __amount);
+ extern int __argp_fmtstream_ensure (argp_fmtstream_t __fs, size_t __amount);
+ 
+-#ifdef __OPTIMIZE__
++#if defined(__OPTIMIZE__) && !defined(__clang__)
+ /* Inline versions of above routines.  */
+
+ #if !_LIBC
\ No newline at end of file

var/spack/repos/builtin/packages/argp-standalone/package.py

+##############################################################################
+# Copyright (c) 2013-2017, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/spack/spack
+# Please also see the NOTICE and LICENSE files for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License (as
+# published by the Free Software Foundation) version 2.1, February 1999.
+#
+# This program 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 terms and
+# conditions of the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
+
+from spack import *
+
+
+class ArgpStandalone(AutotoolsPackage):
+    """Standalone version of the argp interface from glibc for parsing
+       unix-style arguments. """
+
+    homepage = "https://www.lysator.liu.se/~nisse/misc"
+    url      = "https://www.lysator.liu.se/~nisse/misc/argp-standalone-1.3.tar.gz"
+
+    version('1.3', '720704bac078d067111b32444e24ba69')
+
+    # Homebrew (https://github.com/Homebrew/homebrew-core) patches
+    # argp-standalone to work on Darwin; the patchfile below was taken
+    # from
+    # https://raw.githubusercontent.com/Homebrew/formula-patches/b5f0ad3/argp-standalone/patch-argp-fmtstream.h
+    patch('argp-fmtstream.h.patch', 0, 'platform=darwin', '.')
+
+    def install(self, spec, prefix):
+        make('install')
+        make('check')
+        mkdirp(self.spec.prefix.lib)
+        install('libargp.a', join_path(self.spec.prefix.lib, 'libargp.a'))
+        mkdirp(self.spec.prefix.include)
+        install('argp.h', join_path(self.spec.prefix.include, 'argp.h'))