Doug Gregor 6b3935201d [Embedded] Only strip "external" from global variables that have definitions ...

Embedded Swift ends up rewriting the linkage of global variables as
part of linking together all of the Swift modules. Doing so for extern
global variables (e.g., ones meant to be implemented in C) breaks the
LLVM module, because they will never have definitions. Only make this
change when the global variable is a definition.

2025-12-01 15:47:32 -08:00

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