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Globally enable linker dead-code elimination on Unix #128232

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Merged
elinor-fung merged 10 commits into from
May 20, 2026
+8 −1
Merged

Globally enable linker dead-code elimination on Unix #128232

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6cdbb14
Globally enable linker dead-code elimination on Unix
Copilot May 14, 2026
41177a5
Update eng/native/configurecompiler.cmake
elinor-fung May 15, 2026
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elinor-fung May 15, 2026
0884acd
Move section-GC linker flags next to compile options
Copilot May 19, 2026
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jkotas May 19, 2026
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jkotas May 19, 2026
774bd04
Potential fix for pull request finding
jkotas May 19, 2026
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jkotas May 19, 2026
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jkotas May 19, 2026
3218da6
Update eng/native/configurecompiler.cmake
jkotas May 19, 2026
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9 changes: 8 additions & 1 deletion eng/native/configurecompiler.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -740,8 +740,15 @@ if (CLR_CMAKE_HOST_UNIX OR CLR_CMAKE_HOST_WASI)
# We mark the function which needs exporting with DLLEXPORT
add_compile_options(-fvisibility=hidden)

# Separate functions so linker can remove them.
# Separate functions and data into their own sections so the linker can remove
# unreferenced ones.
add_compile_options(-ffunction-sections)
add_compile_options(-fdata-sections)
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if(LD_OSX)
add_linker_flag(-Wl,-dead_strip CHECKED RELEASE RELWITHDEBINFO)
elseif(NOT LD_SOLARIS)
add_linker_flag(-Wl,--gc-sections CHECKED RELEASE RELWITHDEBINFO)
endif()

# Specify the minimum supported version of macOS
# Mac Catalyst needs a special CFLAG, exclusive with mmacosx-version-min
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