meher745 commented on issue #48801:
URL: https://github.com/apache/arrow/issues/48801#issuecomment-3731784239

   Hi @kou @raulcd . While I agree that ` EP_COMMON_CMAKE_ARGS ` should protect 
`ExternalProject_Add` dependencies, the crash on macOS with CMake 4.2.1 seems 
to happen during the initial configuration, before those arguments are ever 
applied to the sub-project build. As discussed in issue #45985 this appears to 
be a macOS specific issue, however it seems that it's not exclusive to 
RapidJSON. The reason I'm seeing this across gflags, mimalloc, and others ( 
#45985 )is that CMake 4.2.1 enforces a hard floor of 3.5 for all parsed files. 


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