C++ object clashes in xCode

[demiantres]

When using the Qt backend in maplibre-native (not maplibre-native-qt!) in iOS (probably also macOS) then xCode compilation fails due to different classes using the same file names:

headless_backend.cpp
gl_functions.cpp
value.cpp
thread.cpp
number_format.cpp
interpolate.cpp
image.cpp
collator.cpp
source.cpp
light.cpp
layer.cpp
filter.cpp
sprite.cpp
file_source_manager.cpp
layer_manager.cpp
renderer_backend.cpp
attribute.cpp
scheduler.cpp

Renaming one of each of the clashing files to, e.g., "gl_functions_qt.cpp" or "image_def.cpp" fixes the problem.

[ntadej]

Do you include too many files? How do you actually build the code and what do you want to achieve?

[demiantres]

The directory structure looks like this:
MainApp:
|- add_subdirectory(maplibre-native): CMakeLists.txt (-DMLN_WITH_QT=ON, -DMLN_QT_LIBRARY_ONLY=ON)

I load this into Qt Creator, target Qt 6.5 iOS. This generates a xCode workspace which I open with xCode and compile&run on the device. Some files are already renamed in the repository - maybe the ones I mentioned above have been forgotten.