hello,

I am using the following command to add a git submodule to an existing repository:


add_custom_command(OUTPUT fetch

  COMMAND git submodule add https://github.com/user/repo.git

)

add_custom_target(new DEPENDS fetch)


This is working as intended. Adding an already existing submodule to the repo does not present any problem by git, as for my build system though it results in an error and the build target fails.


how can I make the build fail gracefully?


thank you in advance

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