1 files changed, 46 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/nlohmann-json/package.py b/var/spack/repos/builtin/packages/nlohmann-json/package.py
new file mode 100644
index 0000000000..3cfcd936a9
--- /dev/null
+++ b/var/spack/repos/builtin/packages/nlohmann-json/package.py
@@ -0,0 +1,46 @@
+# Copyright 2013-2018 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 NlohmannJson(CMakePackage):
+    """JSON for Modern C++"""
+
+    homepage = "https://nlohmann.github.io/json/"
+    url      = "https://github.com/nlohmann/json/archive/v3.1.2.tar.gz"
+    maintainers = ['ax3l']
+
+    version('3.3.0', sha256='2fd1d207b4669a7843296c41d3b6ac5b23d00dec48dba507ba051d14564aa801')
+    version('3.2.0', sha256='2de558ff3b3b32eebfb51cf2ceb835a0fa5170e6b8712b02be9c2c07fcfe52a1')
+    version('3.1.2', sha256='e8fffa6cbdb3c15ecdff32eebf958b6c686bc188da8ad5c6489462d16f83ae54')
+    version('3.1.1', sha256='9f3549824af3ca7e9707a2503959886362801fb4926b869789d6929098a79e47')
+
+    variant('single_header', default=True,
+        description='Use amalgamated single-header')
+    variant('test', default=True,
+        description='Build the tests')
+
+    depends_on('cmake@3.8:', type='build')
+
+    # requires mature C++11 implementations
+    conflicts('%gcc@:4.7')
+    # v3.3.0 adds support for gcc 4.8
+    # https://github.com/nlohmann/json/releases/tag/v3.3.0
+    conflicts('%gcc@:4.8', when='@:3.2.9')
+    conflicts('%intel@:16')
+    conflicts('%pgi@:14')
+
+    def cmake_args(self):
+        spec = self.spec
+
+        args = [
+            '-DJSON_MultipleHeaders:BOOL={0}'.format(
+                'ON' if '~single_header' in spec else 'OFF'),
+            '-DBUILD_TESTING:BOOL={0}'.format(
+                'ON' if '+test' in spec else 'OFF')
+        ]
+
+        return args