Add Spack recipe

.spack/repo/packages/csg-eb/package.py

+# Copyright 2013-2021 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 *
+
+CSG_REPO = "https://mfix.netl.doe.gov/gitlab/exa/csg-eb.git"
+CSG_BRANCH = "main"
+
+
+class CsgEb(CMakePackage):
+    """Define Embedded Boundaries (for AMReX) using CSG"""
+
+    homepage = "https://mfix.netl.doe.gov/gitlab/exa/csg-eb"
+
+    version("main", git=CSG_REPO, branch=CSG_BRANCH)
+
+    variant("cgal", default=True, description="Build with CGAL Support")
+
+    depends_on("pegtl")
+    depends_on("catch2")
+    depends_on("cgal", when="+cgal")
+
+    def cmake_args(self):
+        return [
+            "-DCSG_CGAL_ENABLED={}".format("True" if "+cgal" in self.spec else "False")
+        ]
+
+    def setup_run_environment(self, env):
+        env.prepend_path("CPATH", self.prefix.include)
+
+    @property
+    def headers(self):
+        headers = find_all_headers(self.prefix.include)
+        headers.directories = [self.prefix.include]
+        return headers