[CMake] MacOS bundle using MACOS_PACKAGE_LOCATION with XCode - files not copied

[Pierre Aufrère]

Hello,

I'm using cmake to generate an Xcode project which is supposed to build a bundle. Thus, I use the source file property MACOSX_PACKAGE_LOCATION to place my data (database, GUI, localization files, …) in the correct directory in my bundle.

I used to have a general CMakeLists.txt with several commands like follows: 

file(GLOB VAR_GUI
	${RESOURCE_PATH}/GUI/*
	)
set_source_files_properties(
	${VAR_GUI}
	PROPERTIES
	MACOSX_PACKAGE_LOCATION Resources/GUI
	)

Then one command to concatenate all the independent variables (used to separate the different directories)
set(RESOURCES "${VAR_GUI};…")

Finally, in my main CMakeLists.txt i wrote :
add_executable(${CMAKE_PROJECT_NAME} MACOSX_BUNDLE ${SOURCES} ${HEADERS} ${RESOURCES})

So every data of my project was more or else added by hand. I wanted to automated the process so i wrote a python script that does the job for me. The script proceeds by writing a file in which each directory of my resource directory has its own variable listing the files in it (semi-colon separated element list). It also generate a set of 'source_group' command to organize resources in the IDE.
The generated file is included in my main CMakeLists.txt using the 'include' command.

The generated file use commands like follows:

set(RESOURCE_GUI
	<path_to_file_1>;<path_to_file_2>;…
	)

set_source_files_properties(
	${RESOURCE_GUI}
	PROPERTIES
	MACOSX_PACKAGE_LOCATION Resources/GUI
	)

Unfortunately, with this new generated included file, the resources are successfully added to the Xcode project but when I build the project, the resources are no longer copied into the bundle.

I checked that the include command wasn't the issue since my old commands (hand written) works when i put them in the included file (in place of the generated commands).
Trying to figure out the issue, I notice that in Xcode, the only difference between resources added by my generated file and the old ones is that the old commands were in the end marking my resources file as target member (target membership is checked in Xcode). With the generated file, the resources are in the project but not marked as member of the target.
I thought maybe the 'file' command was setting other source file properties like EXTERNAL_OBJECT so i tried setting it up by hand, but it doesn't work either.