[compiler-rt] [cmake][compiler-rt][darwin] builtin libraries don't build for armv6m in Darwin (PR #195372)

[Ian Anderson via llvm-commits]

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@@ -450,11 +450,14 @@ macro(darwin_add_builtin_libraries)
                               OS ${os}
                               ARCH ${arch}
                               MIN_VERSION ${DARWIN_${os}_BUILTIN_MIN_VER})
+      cmake_push_check_state()
+      set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -arch ${arch}")
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ian-twilightcoder wrote:

Claude made these changes, and they look consistent with similar code I found at <https://github.com/llvm/llvm-project/blob/bcd75cb494a2aacef4cc379338be635048056cc0/compiler-rt/lib/builtins/CMakeLists.txt#L1004-L1015>. I verified that armv7 still gets BF16 files.

https://github.com/llvm/llvm-project/pull/195372