healpix-cxx: added new package at v3.50.0 (#16846)

var/spack/repos/builtin/packages/healpix-cxx/package.py

+# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class HealpixCxx(AutotoolsPackage):
+    """Healpix-CXX is a C/C++ library for calculating
+    Hierarchical Equal Area isoLatitude Pixelation of a sphere."""
+
+    homepage = "https://healpix.sourceforge.io"
+    url      = "https://ayera.dl.sourceforge.net/project/healpix/Healpix_3.50/healpix_cxx-3.50.0.tar.gz"
+
+    version('3.50.0', sha256='6538ee160423e8a0c0f92cf2b2001e1a2afd9567d026a86ff6e2287c1580cb4c')
+
+    depends_on('cfitsio')
+    depends_on('libsharp', type='build')
+
+    def patch(self):
+        spec = self.spec
+        configure_fix = FileFilter('configure')
+        # Link libsharp static libs
+        configure_fix.filter(
+            r'^SHARP_LIBS=.*$',
+            'SHARP_LIBS="-L{0} -lsharp -lc_utils -lfftpack -lm"'
+            .format(spec['libsharp'].prefix.lib)
+        )