commit ceb4f2dd29ad7c8d8d921d20697a77ec04072e3c
author bazel.build machine account <15028808+bazel-io@users.noreply.github.com> Thu Oct 12 11:18:57 2023 -0400
committer GitHub <noreply@github.com> Thu Oct 12 15:18:57 2023 +0000
tree ad697fccfdfa503ed96b4aaaeec5b9ba3be8a716
parent 924bee9a1d6df8bd933cac67ce27f9f09ab3cc1c

[6.4.0] Add blake3 NEON instructions on linux arm64 (#19804)

otherwise getting libunix_jni.so: undefined symbol:
blake3_hash_many_neon

see
https://github.com/bazelbuild/bazel/commit/d0de5e044c65fe7c5e414f860887be20087732da

Closes #19384.

Commit
https://github.com/bazelbuild/bazel/commit/31812fe7689fc317afed4e80c383d01cfcbc7087

PiperOrigin-RevId: 562479599
Change-Id: I8f0ca6b68486f5ea8db698f3f99526eb1c0de8a8

Co-authored-by: Mauricio G <up.mauricio.g@gmail.com>

third_party/blake3/blake3.BUILD

diff --git a/third_party/blake3/blake3.BUILD b/third_party/blake3/blake3.BUILD
index f141a9c..d8e76ec 100644
--- a/third_party/blake3/blake3.BUILD
+++ b/third_party/blake3/blake3.BUILD
@@ -36,12 +36,18 @@
             "c/blake3_sse2_x86-64_unix.S",
             "c/blake3_sse41_x86-64_unix.S",
         ],
+        "@bazel_tools//src/conditions:linux_aarch64": [
+            "c/blake3_neon.c",
+        ],
         "@bazel_tools//src/conditions:windows_x64": [
             "c/blake3_avx2_x86-64_windows_msvc.asm",
             "c/blake3_avx512_x86-64_windows_msvc.asm",
             "c/blake3_sse2_x86-64_windows_msvc.asm",
             "c/blake3_sse41_x86-64_windows_msvc.asm",
         ],
+        "@bazel_tools//src/conditions:windows_arm64": [
+            "c/blake3_neon.c",
+        ],
         "@bazel_tools//src/conditions:darwin_arm64": [
             "c/blake3_neon.c",
         ],
@@ -57,9 +63,12 @@
             # lacking the headers to compile AVX512.
 	    "-DBLAKE3_NO_AVX512",
 	],
+        "@bazel_tools//src/conditions:linux_aarch64": [
+            "-DBLAKE3_USE_NEON=1",
+        ],
         "@bazel_tools//src/conditions:windows_x64": [],
         "@bazel_tools//src/conditions:windows_arm64": [
-            "-DBLAKE3_USE_NEON=0",
+            "-DBLAKE3_USE_NEON=1",
         ],
         "@bazel_tools//src/conditions:darwin_arm64": [
             "-DBLAKE3_USE_NEON=1",