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[cmake] disable NEON runtime check on clang-cl #429

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[cmake] disable NEON runtime check on clang-cl #429

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7 changes: 6 additions & 1 deletion cmake/OpusConfig.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -71,7 +71,12 @@ elseif(OPUS_CPU_ARM AND NOT OPUS_DISABLE_INTRINSICS)
opus_detect_neon(COMPILER_SUPPORT_NEON)
if(COMPILER_SUPPORT_NEON)
option(OPUS_USE_NEON "Option to enable NEON" ON)
option(OPUS_MAY_HAVE_NEON "Does runtime check for neon support" ON)
if (MSVC AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
set(NEON_RUNTIME_CHECK_DEFAULT OFF)
else()
set(NEON_RUNTIME_CHECK_DEFAULT ON)
endif()
option(OPUS_MAY_HAVE_NEON "Does runtime check for neon support" ${NEON_RUNTIME_CHECK_DEFAULT})
option(OPUS_PRESUME_NEON "Assume target CPU has NEON support" OFF)
if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
set(OPUS_PRESUME_NEON ON)
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