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Add -mfpu=neon if $CC accepts it #358

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6 changes: 6 additions & 0 deletions c/CMakeLists.txt
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ project(libblake3
LANGUAGES C ASM
)

include(CheckCCompilerFlag)
include(FeatureSummary)
include(GNUInstallDirs)

Expand Down Expand Up @@ -139,6 +140,11 @@ elseif(CMAKE_SYSTEM_PROCESSOR IN_LIST BLAKE3_ARMv8_NAMES
BLAKE3_USE_NEON=1
)

check_c_compiler_flag(-mfpu=neon BLAKE3_MFPU_NEON_SUPPORTED)
if (BLAKE3_MFPU_NEON_SUPPORTED)
target_compile_options(blake3 PRIVATE -mfpu=neon)
endif()

if (DEFINED BLAKE3_CFLAGS_NEON)
set_source_files_properties(blake3_neon.c PROPERTIES COMPILE_FLAGS "${BLAKE3_CFLAGS_NEON}")
endif()
Expand Down
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