ExternalProject_Add should give the option to turn off recursive submodules
My project is referencing the EASTL library, whose latest version uses submodules in a non-conventional way, which introduces circular dependencies between them. This produces errors when updating submodules recursively.
However, there's currently no way to tell ExternalProject_Add to not update submodules recursively. I tried setting fetch.recurseSubmodules=false and submodule.recurse=false to no avail. The only workaround right now is to do it like this (requires CMake 3.16 version):
ExternalProject_Add( eastl GIT_REPOSITORY https://github.com/electronicarts/EASTL GIT_TAG 3.14.03 GIT_CONFIG advice.detachedHead=false GIT_SHALLOW 1 GIT_SUBMODULES "" UPDATE_COMMAND "" PATCH_COMMAND git submodule update --init INSTALL_COMMAND "" )
...but I'm not sure if patch command should be used for this or not. Either way, there should be a way to disable recursive submodules.