geant3: new package (#33065)

* geant3: new package
* fix copyright

var/spack/repos/builtin/packages/geant3/package.py

@@ -0,0 +1,43 @@
+# Copyright 2013-2022 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 Geant3(CMakePackage):
+    """Simulation software using Monte Carlo methods to describe how particles
+    pass through matter."""
+
+    homepage = "https://github.com/vmc-project/geant3"
+    url = "https://github.com/vmc-project/geant3/archive/v3-7.tar.gz"
+
+    version("4-1", sha256="a1dcab7bc7a7493e4c78d7bec22cd816e79e40992bf9db0d616e2a0125fcdf50")
+    version("3-8", sha256="6ff6745eef59139d791bef043b405f6d515be1d98096cf4e82ac4c1f61f737dc")
+    version("3-7", sha256="36cd57c6e5a54ff11e8687b30f54d774b676e06c55658cbc1ad787d1fadbe509")
+    version("3-6", sha256="e2c8f2c8397431218f90e03cafe54aa0de0474536cb9de921573ca670abfd0e0")
+    version("3-5", sha256="5bec0b442bbb3456d5cd1751ac9f90f1da48df0fcb7f6bf0a86c566bfc408261")
+    version("3-4", sha256="c7b487ab4fb4e6479c652b9b11dcafb686edf35e2f2048045c501e4f5597d62c")
+
+    depends_on("root~vmc")
+    depends_on("vmc")
+
+    variant(
+        "cxxstd",
+        default="11",
+        values=("11", "14", "17"),
+        multi=False,
+        description="Require a specific C++ standard",
+    )
+
+    def cmake_args(self):
+        args = []
+        if self.spec.satisfies("%gcc@10:"):
+            args.append('-DCMAKE_Fortran_FLAGS="-fallow-argument-mismatch -fallow-invalid-boz"')
+        args.append(self.define_from_variant("CMAKE_CXX_STANDARD", "cxxstd"))
+        return args
+
+    def setup_build_environment(self, env):
+        if "platform=darwin" in self.spec:
+            env.unset("MACOSX_DEPLOYMENT_TARGET")