old_contents: ##############################################################################
  # Copyright (c) 2013-2016, 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/llnl/spack
  # Please also see the LICENSE file 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 Zlib(AutotoolsPackage):
      """A free, general-purpose, legally unencumbered lossless
         data-compression library."""
  
      homepage = "http://zlib.net"
      # URL must remain http:// so Spack can bootstrap curl
      url = "http://zlib.net/fossils/zlib-1.2.10.tar.gz"
  
      version('1.2.11', '1c9f62f0778697a09d36121ead88e08e')
      # Due to the bug fixes, any installations of 1.2.9 or 1.2.10 should be
      # immediately replaced with 1.2.11.
      version('1.2.8', '44d667c142d7cda120332623eab69f40')
  
      variant('pic', default=True,
              description='Produce position-independent code (for shared libs)')
      variant('shared', default=True,
              description='Enables the build of shared libraries.')
  
      def setup_environment(self, spack_env, run_env):
          if '+pic' in self.spec:
              spack_env.set('CFLAGS', self.compiler.pic_flag)
  
      def configure_args(self):
          config_args = []
          if '+shared' not in self.spec:
              config_args.append('--static')
          return config_args
  
new_contents: ##############################################################################
  # Copyright (c) 2013-2016, 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/llnl/spack
  # Please also see the LICENSE file 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 *
  
  
  # Although zlib comes with a configure script, it does not use Autotools
  # The AutotoolsPackage causes zlib to fail to build with PGI
  class Zlib(Package):
      """A free, general-purpose, legally unencumbered lossless
         data-compression library."""
  
      homepage = "http://zlib.net"
      # URL must remain http:// so Spack can bootstrap curl
      url = "http://zlib.net/fossils/zlib-1.2.11.tar.gz"
  
      version('1.2.11', '1c9f62f0778697a09d36121ead88e08e')
      # Due to the bug fixes, any installations of 1.2.9 or 1.2.10 should be
      # immediately replaced with 1.2.11.
      version('1.2.8', '44d667c142d7cda120332623eab69f40')
  
      variant('pic', default=True,
              description='Produce position-independent code (for shared libs)')
      variant('shared', default=True,
              description='Enables the build of shared libraries.')
  
      def setup_environment(self, spack_env, run_env):
          if '+pic' in self.spec:
              spack_env.set('CFLAGS', self.compiler.pic_flag)
  
      def install(self, spec, prefix):
          config_args = []
          if '~shared' in spec:
              config_args.append('--static')
          configure('--prefix={0}'.format(prefix), *config_args)
  
          make()
          if self.run_tests:
              make('check')
          make('install')
  
subject: Fix zlib %pgi build (#3436)