From 1bfb16592b961cc8f1e95afaf12e608b55ff4b60 Mon Sep 17 00:00:00 2001
From: alalazo <massimiliano.culpo@googlemail.com>
Date: Mon, 14 Dec 2015 16:31:02 +0100
Subject: fftw : added package

---
 var/spack/packages/fftw/package.py | 96 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 var/spack/packages/fftw/package.py

(limited to 'var')

diff --git a/var/spack/packages/fftw/package.py b/var/spack/packages/fftw/package.py
new file mode 100644
index 0000000000..5f71762c4f
--- /dev/null
+++ b/var/spack/packages/fftw/package.py
@@ -0,0 +1,96 @@
+##############################################################################
+# Copyright (c) 2013, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Written 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 General Public License (as published by
+# the Free Software Foundation) version 2.1 dated 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 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 Fftw(Package):
+    """
+    FFTW is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions, of
+    arbitrary input size, and of both real and complex data (as well as of even/odd data, i.e. the discrete cosine/sine
+    transforms or DCT/DST). We believe that FFTW, which is free software, should become the FFT library of choice for
+    most applications.
+    """
+    homepage = "http://www.fftw.org"
+    url      = "http://www.fftw.org/fftw-3.3.4.tar.gz"
+
+    version('3.3.4', '2edab8c06b24feeb3b82bbb3ebf3e7b3')
+
+    ##########
+    # Floating point precision
+    FLOAT = 'float'
+    LONG_DOUBLE = 'long_double'
+    QUAD_PRECISION = 'quad'
+    PRECISION_OPTIONS = {
+        FLOAT: '--enable-float',
+        LONG_DOUBLE: '--enable--long-double',
+        QUAD_PRECISION: '--enable-quad-precision'
+    }
+    variant(FLOAT, default=False, description='Produces a single precision version of the library')
+    variant(LONG_DOUBLE, default=False, description='Produces a long double precision version of the library')
+    variant(QUAD_PRECISION, default=False, description='Produces a quad precision version of the library (works only with GCC and libquadmath)')
+    ##########
+
+    variant('mpi', default=False, description='Activate MPI support')
+
+    depends_on('mpi', when='+mpi')
+
+    @staticmethod
+    def enabled(x):
+        """
+        Given a variant name returns the string that means the variant is enabled
+
+        :param x: variant name
+        """
+        # FIXME : duplicated from MVAPICH2
+        return '+' + x
+
+    def check_fortran_availability(self, options):
+        if not self.compiler.f77 or not self.compiler.fc:
+            options.append("--disable-fortran")
+
+    def set_floating_point_precision(self, spec, options):
+        l = [option for variant, option in Fftw.PRECISION_OPTIONS.iteritems() if self.enabled(variant) in spec]
+        if len(l) > 1:
+            raise RuntimeError('At most one floating point precision variant may activated per build.')
+        options.extend(l)
+
+    def install(self, spec, prefix):
+
+        options = ['--prefix=%s' % prefix,
+                   '--enable-shared',
+                   '--enable-threads',
+                   '--enable-openmp']
+        self.check_fortran_availability(options)
+        self.set_floating_point_precision(spec, options)
+
+        if '+mpi' in spec:
+            options.append('--enable-mpi')
+
+        configure(*options)
+        make()
+        make("install")
+
-- 
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