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build(macos): disable deduplication in link step
Problem: Apple Clang 16 comes with a new deduplication algorithm that is
enabled by default in release builds (https://developer.apple.com/documentation/xcode-release-notes/xcode-16-release-notes#New-Features-in-Xcode-16-Beta) which breaks the built
nvim binary (locks and spins at 100% CPU).
Solution: Disable deduplication on macOS. Tested on Clang 15 as well and
seems to make no difference to binary size anyway.
(cherry picked from commit 7e099cf3eb
)
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@ -158,6 +158,9 @@ elseif(CMAKE_SYSTEM_NAME MATCHES "Darwin")
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# ENABLE_EXPORTS is set to true. See
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# https://github.com/neovim/neovim/issues/25295
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target_link_options(nvim_bin PRIVATE "-Wl,-export_dynamic")
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# Apple Clang 16's new deduplication pass leads to lock-up on start
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# TODO(clason): verify that problem remains after release or remove
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target_link_options(nvim_bin PRIVATE "-Wl,-no_deduplicate")
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elseif(CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
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target_link_libraries(main_lib INTERFACE pthread c++abi)
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elseif(CMAKE_SYSTEM_NAME STREQUAL "SunOS")
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