def METHOD_NAME(self):
    tc = CMakeToolchain(self)
    tc.variables["BZ2_BUILD_EXE"] = self.options.build_executable
    tc.variables["BZ2_SRC_DIR"] = self.source_folder.replace("\\", "/")
    tc.variables["BZ2_VERSION_MAJOR"] = Version(self.version).major
    tc.variables["BZ2_VERSION_STRING"] = self.version
    tc.METHOD_NAME()