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782b1992b2
ar is not able to tell which sections to be GC'ed, hence it does not care about --gc-sections, but ld does. let's add this option to CMAKE_EXE_LINKER_FLAGS. Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
28 lines
854 B
CMake
28 lines
854 B
CMake
set(Seastar_OptimizationLevel_RELEASE "3")
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set(CMAKE_CXX_FLAGS_RELEASE
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"-ffunction-sections -fdata-sections"
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CACHE
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INTERNAL
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"")
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string(APPEND CMAKE_CXX_FLAGS_RELEASE
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" -O${Seastar_OptimizationLevel_RELEASE}")
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if(CMAKE_SYSTEM_PROCESSOR MATCHES "arm64|aarch64")
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set(clang_inline_threshold 300)
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else()
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set(clang_inline_threshold 2500)
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endif()
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add_compile_options(
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"$<$<CXX_COMPILER_ID:GNU>:--param;inline-unit-growth=300>"
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"$<$<CXX_COMPILER_ID:Clang>:-mllvm;-inline-threshold=${clang_inline_threshold}>"
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# clang generates 16-byte loads that break store-to-load forwarding
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# gcc also has some trouble: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103554
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"-fno-slp-vectorize")
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set(Seastar_DEFINITIONS_RELEASE
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SCYLLA_BUILD_MODE=release)
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set(CMAKE_EXE_LINKER_FLAGS_RELEASE
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"-Wl,--gc-sections")
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set(stack_usage_threshold_in_KB 13)
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