pitrou commented on code in PR #47766:
URL: https://github.com/apache/arrow/pull/47766#discussion_r2415716147
##########
cpp/cmake_modules/ThirdpartyToolchain.cmake:
##########
@@ -2294,7 +2294,8 @@ if(ARROW_MIMALLOC)
-DMI_LOCAL_DYNAMIC_TLS=ON
-DMI_BUILD_OBJECT=OFF
-DMI_BUILD_SHARED=OFF
- -DMI_BUILD_TESTS=OFF)
+ -DMI_BUILD_TESTS=OFF
+ -DMI_NO_OPT_ARCH=ON)
Review Comment:
Perhaps add an explanatory comment here
```suggestion
# GH-47229: Force mimalloc to generate armv8.0 binary
-DMI_NO_OPT_ARCH=ON)
```
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