Add libkml package (#12836)

* Add libkml package

* googletest needs to be linked to RPATH

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

@@ -0,0 +1,59 @@
+# Copyright 2013-2019 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 Libkml(CMakePackage):
+    """Reference implementation of OGC KML 2.2."""
+
+    # NOTE: The original libkml repo is https://github.com/google/libkml,
+    # but this project is dead. See https://github.com/google/libkml/issues/4
+
+    homepage = "https://github.com/libkml/libkml"
+    url      = "https://github.com/libkml/libkml/archive/1.3.0.tar.gz"
+
+    version('1.3.0', sha256='8892439e5570091965aaffe30b08631fdf7ca7f81f6495b4648f0950d7ea7963')
+
+    variant('java', default=False, description='Build java bindings')
+    variant('python', default=False, description='Build python bindings')
+
+    extends('jdk', when='+java')
+    extends('python', when='+python')
+
+    # See DEPENDENCIES
+    depends_on('cmake@2.8:', type='build')
+    depends_on('boost@1.44.0:')
+    depends_on('expat@2.1.0:')
+    depends_on('minizip@1.2.8:')
+    depends_on('uriparser')
+    depends_on('zlib@1.2.8:')
+    depends_on('googletest@1.7.0:', type='link')
+    depends_on('swig', when='+java', type='build')
+    depends_on('swig', when='+python', type='build')
+
+    def cmake_args(self):
+        spec = self.spec
+
+        args = []
+
+        if '+java' in spec:
+            args.append('-DWITH_JAVA:BOOL=ON')
+        else:
+            args.append('-DWITH_JAVA:BOOL=OFF')
+
+        if '+python' in spec:
+            args.append('-DWITH_PYTHON:BOOL=ON')
+        else:
+            args.append('-DWITH_PYTHON:BOOL=OFF')
+
+        if self.run_tests:
+            args.append('-DBUILD_TESTING:BOOL=ON')
+            args.append('-DGTEST_INCLUDE_DIR:PATH={0}'.format(
+                spec['googletest'].prefix.include))
+        else:
+            args.append('-DBUILD_TESTING:BOOL=OFF')
+
+        return args