Final answer:
A module "knows" it was compiled as part of the source tree based on its location within the directory structure. If a module is not compiled as part of the source tree, it may have limited integration and compatibility with the project. Faking being built in the source tree is not recommended.
Step-by-step explanation:
A module "knows" it was compiled as part of the source tree based on its location within the directory structure. When a module is built as part of the source tree, it can access other files and modules within the tree and take advantage of features and support provided by the maintainers. For example, if a module is built as part of a larger software project, it may have access to shared libraries or configuration files that are specific to that project.
If a module was not compiled as part of the source tree, it cannot easily access the resources and support provided by the maintainers. It becomes a separate entity and may have limited integration with the rest of the project. This can lead to dependencies and compatibility issues.
It is possible to "fake" having been built in the source tree, but it is not advisable. This can create confusion and make it difficult to maintain and update the codebase. It is generally better to follow the established practices and procedures of the project to ensure consistency and ease of future development.