Typo in file extension does not result in error

[celskeggs]

F´ Version	v3.4.3-117-g65b9e4d9d
Affected Component	build system

---

Problem Description

I created a file with the extension .fp instead of .fpp and added it to SOURCE_FILES in a module.

set(SOURCE_FILES
  "${CMAKE_CURRENT_LIST_DIR}/mymodule.hpp"
  "${CMAKE_CURRENT_LIST_DIR}/mymodule.fp"
)

Since mymodule.fp is not processed, I expect to get an error in this case. The presence of unrecognized source code is likely not intended, and catching it would help avoid mistakes. (This is most applicable when using a custom autocoder.)

Context / Environment

Execute fprime-util version-check and share the output.

Operating System: Linux
CPU Architecture: x86_64
Platform: Linux-5.15.153.1-microsoft-standard-WSL2-x86_64-with-glibc2.34
Python version: 3.9.18
CMake version: 3.26.5
Pip version: 21.2.3
Pip packages:
    fprime-tools==3.4.5a1
    fprime-gds==3.4.4a3
    fprime-fpp-*==2.2.0a5

How to Reproduce

1. Create a new file with the extension .fp and add it to an existing SOURCE_FILES list.
2. Try to build the project.
3. Notice that the project does not error out.

Expected Behavior

An error should be reported explaining that the file extension cannot be recognized.