meshlab: allow downloads of vendored components

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

@@ -0,0 +1,44 @@
+# Copyright 2013-2024 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 Meshlab(CMakePackage):
+    """The open source mesh processing system."""
+
+    homepage = "https://www.meshlab.net"
+    url = "https://github.com/cnr-isti-vclab/meshlab/archive/refs/tags/MeshLab-2023.12.tar.gz"
+    git = "https://github.com/cnr-isti-vclab/meshlab.git"
+
+    maintainers("wdconinc")
+
+    license("GPL-3.0", checked_by="wdconinc")
+
+    version("main", branch="main", submodules=True)
+    version("2023.12", commit="2dbd2f4b12df3b47d8777b2b4a43cabd9e425735", submodules=True)
+
+    variant("double_scalar", default=False, description="Type to use for scalars")
+
+    depends_on("eigen")
+    depends_on("glew")
+    depends_on("mpfr")
+    depends_on("qt@5.15: +opengl")
+
+    def cmake_args(self):
+        args = [
+            self.define_from_variant("MESHLAB_BUILD_WITH_DOUBLE_SCALAR", "double_scalar"),
+            # E57 and Nexus plugins fail on gcc-13 due to missing include cstdint,
+            # but patching is cumbersome since build process downloads their source.
+            # Ref: https://github.com/asmaloney/libE57Format/pull/176
+            self.define("MESHLAB_ALLOW_DOWNLOAD_SOURCE_LIBE57", False),
+            # Ref: https://github.com/cnr-isti-vclab/corto/pull/44
+            self.define("MESHLAB_ALLOW_DOWNLOAD_SOURCE_NEXUS", False),
+        ]
+
+        for bundle in "LIBIGL", "LEVMAR", "LIB3DS", "EMBREE", "NEXUS", "QHULL", "STRUCTURE_SYNTH", "TINYGLTF", "MUPARSER", "BOOST", "OPENCTM", "U3D", "LIBE57", "CGAL", "XERCES":
+            args.append(self.define(f"MESHLAB_ALLOW_DOWNLOAD_SOURCE_{bundle}", False))
+
+        return args