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Add BLAKE3 support #141

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Add BLAKE3 support #141

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5 changes: 3 additions & 2 deletions ext/digest/blake3/blake3_dispatch.c
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Original file line number Diff line number Diff line change
Expand Up @@ -19,15 +19,16 @@
#endif

#if !defined(BLAKE3_ATOMICS)
#if defined(__has_include)
#if defined(__has_include) && defined(__STDC_VERSION__) && \
__STDC_VERSION__ >= 201112L
Comment on lines +22 to +23

@byroot byroot Aug 14, 2026

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👍

#if __has_include(<stdatomic.h>) && !defined(_MSC_VER)
#define BLAKE3_ATOMICS 1
#else
#define BLAKE3_ATOMICS 0
#endif /* __has_include(<stdatomic.h>) && !defined(_MSC_VER) */
#else
#define BLAKE3_ATOMICS 0
#endif /* defined(__has_include) */
#endif /* defined(__has_include) && C11 */
#endif /* BLAKE3_ATOMICS */

#if BLAKE3_ATOMICS
Expand Down
16 changes: 10 additions & 6 deletions ext/digest/blake3/extconf.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,10 @@
# Extra per-object compiler flags, keyed by object basename.
simd_cflags = {}

def blake3_disable(macro)
$CPPFLAGS << " -D#{macro}"
end

# Probe used to confirm the compiler both accepts +flag+ and can compile the
# intrinsics the backend relies on.
def blake3_have_isa?(name, flag, snippet)
Expand Down Expand Up @@ -55,7 +59,7 @@ def blake3_have_isa?(name, flag, snippet)
objs << obj
simd_cflags[obj] = flag
else
$defs << "-D#{no_macro}"
blake3_disable(no_macro)
end
end
when /\A(aarch64|arm64)\z/i
Expand All @@ -67,11 +71,11 @@ def blake3_have_isa?(name, flag, snippet)
# No optimized backend wired up for this architecture (e.g. 32-bit x86,
# ppc): build portable-only. Disabling every x86 ISA keeps the dispatcher
# from referencing backends we didn't compile, and NEON is forced off.
$defs << "-DBLAKE3_NO_SSE2"
$defs << "-DBLAKE3_NO_SSE41"
$defs << "-DBLAKE3_NO_AVX2"
$defs << "-DBLAKE3_NO_AVX512"
$defs << "-DBLAKE3_USE_NEON=0"
blake3_disable("BLAKE3_NO_SSE2")
blake3_disable("BLAKE3_NO_SSE41")
blake3_disable("BLAKE3_NO_AVX2")
blake3_disable("BLAKE3_NO_AVX512")
blake3_disable("BLAKE3_USE_NEON=0")
end

$objs = objs.map { |o| "#{o}.#{$OBJEXT}" }
Expand Down