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Docs: Follow-up for #70585

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Robert Schulze 2024-10-14 19:02:09 +00:00
parent c1b56801b3
commit 36fbc4ac32
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cmake/cpu_features.cmake
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@ -11,6 +11,10 @@ option (ARCH_NATIVE "Add -march=native compiler flag. This makes your binaries n
if (ARCH_NATIVE) if (ARCH_NATIVE)
set (COMPILER_FLAGS "${COMPILER_FLAGS} -march=native") set (COMPILER_FLAGS "${COMPILER_FLAGS} -march=native")
# Populate the ENABLE_ option flags. This is required for the build of some third-party dependencies, specifically snappy, which
# (somewhat weirdly) expects the relative SNAPPY_HAVE_ preprocessor variables to be populated, in addition to the microarchitecture
# feature flags being enabled in the compiler. This fixes the ARCH_NATIVE flag by automatically populating the ENABLE_ option flags
# according to the current CPU's capabilities, detected using clang.
if (ARCH_AMD64) if (ARCH_AMD64)
execute_process( execute_process(
COMMAND sh -c "clang -E - -march=native -###" COMMAND sh -c "clang -E - -march=native -###"