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 PkgConfig(Package):
      """pkg-config is a helper tool used when compiling applications
      and libraries"""
  
      homepage = "http://www.freedesktop.org/wiki/Software/pkg-config/"
      url = "http://pkgconfig.freedesktop.org/releases/pkg-config-0.28.tar.gz"
  
      version('0.29.1', 'f739a28cae4e0ca291f82d1d41ef107d')
      version('0.28',   'aa3c86e67551adc3ac865160e34a2a0d')
  
      parallel = False
      variant('internal_glib', default=True,
              description='Builds with internal glib')
  
      # The following patch is needed for gcc-6.1
      patch('g_date_strftime.patch')
  
      def install(self, spec, prefix):
          args = ["--prefix={0}".format(prefix),
                  "--enable-shared"]
          if "+internal_glib" in spec:
              # There's a bootstrapping problem here;
              # glib uses pkg-config as well, so break
              # the cycle by using the internal glib.
              args.append("--with-internal-glib")
          configure(*args)
  
          make()
          make("install")
  
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 *
  
  
  class PkgConfig(Package):
      """pkg-config is a helper tool used when compiling applications
      and libraries"""
  
      homepage = "http://www.freedesktop.org/wiki/Software/pkg-config/"
      url = "http://pkgconfig.freedesktop.org/releases/pkg-config-0.28.tar.gz"
  
      version('0.29.1', 'f739a28cae4e0ca291f82d1d41ef107d')
      version('0.28',   'aa3c86e67551adc3ac865160e34a2a0d')
  
      parallel = False
      variant('internal_glib', default=True,
              description='Builds with internal glib')
  
      # The following patch is needed for gcc-6.1
      patch('g_date_strftime.patch')
  
      @when("platform=cray")
      def setup_dependent_environment(self, spack_env, run_env, dep_spec):
          """spack built pkg-config on cray's requires adding /usr/local/
          and /usr/lib64/  to PKG_CONFIG_PATH in order to access cray '.pc'
          files."""
          spack_env.prepend_path("PKG_CONFIG_PATH", "/usr/lib64/pkgconfig")
          spack_env.prepend_path("PKG_CONFIG_PATH", "/usr/local/lib64/pkgconfig")
  
      def install(self, spec, prefix):
          args = ["--prefix={0}".format(prefix),
                  "--enable-shared"]
          if "+internal_glib" in spec:
              # There's a bootstrapping problem here;
              # glib uses pkg-config as well, so break
              # the cycle by using the internal glib.
              args.append("--with-internal-glib")
          configure(*args)
  
          make()
          make("install")
  
subject: Add paths to PKG_CONFIG_PATH to find cray .pc file (#3378)