New package: clapack (#7992)

* clapack: new package

* clapack: updated edit phase and fixed flake9 errors

* clapack: added description for variant

* clapack: updated

* removed .package.py.swo

var/spack/repos/builtin/packages/clapack/package.py

@@ -0,0 +1,63 @@
+##############################################################################
+# Copyright (c) 2013-2018, 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 *
+from distutils.dir_util import copy_tree
+
+
+class Clapack(MakefilePackage):
+    """CLAPACK is a f2c'ed version of LAPACK.
+
+       The CLAPACK library was built using a Fortran to C conversion utility
+    called f2c.  The entire Fortran 77 LAPACK library is run through f2c to
+    obtain C code, and then modified to improve readability.  CLAPACK's goal
+    is to provide LAPACK for someone who does not have access to a Fortran
+    compiler."""
+
+    homepage = "http://www.netlib.org/clapack/"
+    url      = "http://www.netlib.org/clapack/clapack.tgz"
+
+    version('3.2.1', '040da31f3a7d4fbc9ac376c748d18d1f')
+
+    variant('external-blas', default=True,
+            description='Build with external BLAS (ATLAS here).')
+
+    depends_on('atlas', when='+external-blas')
+
+    def edit(self, spec, prefix):
+        install('make.inc.example', 'make.inc')
+        if '+external-blas' in spec:
+            make_inc = FileFilter('make.inc')
+            make_inc.filter(r'^BLASLIB.*',
+                            'BLASLIB = ../../libcblaswr.a -lcblas -latlas')
+            makefile.filter(r'^lib.*',
+                            'lib: variants lapacklib tmglib')
+
+    def build(self, spec, prefix):
+        make('f2clib')
+        make('cblaswrap' if '+external-blas' in spec else 'blaslib')
+        make('lib')
+
+    def install(self, spec, prefix):
+        copy_tree('.', prefix)