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Debug info embeds archive paths in the Mach-O debug map, which can change the linked binary's UUID when the build path length changes. Let cc use Cargo's debug info setting instead of forcing -gfull. Observed in nixpkgs buzz-cli where we have to pass the following for reproducible builds: link-arg=-Wl,-no_uuid Note: tried with -g3 to -g1 and they are all non-reproducible on macOS.
booxter
commented
Oct 16, 2026
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| if APPLE_ABI.contains(&target.os.as_str()) { | ||
| // ``-gfull`` is required for Darwin's |-dead_strip|. |
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This seems to come from old GCC days, but I'm not sure.
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Debug info embeds archive paths in the Mach-O debug map, which can
change the linked binary's UUID when the build path length changes. Let
cc use Cargo's debug info setting instead of forcing -gfull.
Observed in nixpkgs buzz-cli where we have to pass the following for
reproducible builds: link-arg=-Wl,-no_uuid
Note: tried with -g3 to -g1 and they are all non-reproducible on macOS.