Add CDT (Constrained Delaunay Triangulation) library (#39488)

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

@@ -0,0 +1,47 @@
+# Copyright 2013-2023 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.package import *
+
+
+class Cdt(CMakePackage):
+    """CDT is a C++ library for generating constraint or conforming Delaunay triangulations."""
+
+    homepage = "https://artem-ogre.github.io/CDT"
+    url = "https://github.com/artem-ogre/CDT/archive/refs/tags/1.3.0.tar.gz"
+
+    maintainers("jcortial-safran")
+
+    version("1.3.0", sha256="7e8feadf9534cf79f9bf188365510fd6bc68ea997758e1c68d1569f98da924da")
+
+    variant(
+        "boost",
+        default=False,
+        description="Use Boost as a fallback for features missing in C++98 and performance tweaks",
+    )
+    variant(
+        "64_bit_index",
+        default=False,
+        description="Use 64bits to store vertex/triangle index types. Otherwise 32bits are used.",
+    )
+    variant(
+        "compiled",
+        default=False,
+        description="Instantiate templates for float and double and compiled into a library",
+    )
+    variant("shared", default=True, description="Compile as a shared library")
+
+    depends_on("cmake@3.4:", type="build")
+    depends_on("boost", when="+boost")
+
+    root_cmakelists_dir = "CDT"
+
+    def cmake_args(self):
+        return [
+            self.define_from_variant("CDT_USE_BOOST", "boost"),
+            self.define_from_variant("CDT_USE_64_BIT_INDEX_TYPE", "64_bit_index"),
+            self.define_from_variant("CDT_USE_AS_COMPILED_LIBRARY", "compiled"),
+            self.define_from_variant("BUILD_SHARED_LIBS", "shared"),
+        ]