[libc-commits] [libc] [libc] Removed unused flags from baremetal cache files (PR #168942)

[Petr Hosek via libc-commits]

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@@ -2,7 +2,7 @@ set(CMAKE_SYSTEM_PROCESSOR arm CACHE STRING "")
 set(RUNTIMES_TARGET_TRIPLE "armv6m-none-eabi" CACHE STRING "")
 
 foreach(lang C;CXX;ASM)
-    set(CMAKE_${lang}_FLAGS "-march=armv6m -mcpu=cortex-m0plus -mfloat-abi=soft -Wno-atomic-alignment \"-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)\" \"-Dfprintf(stream, format, ...)=printf(format)\" \"-Dfputs(string, stream)=puts(string)\" -D_LIBCPP_PRINT=1" CACHE STRING "")
+    set(CMAKE_${lang}_FLAGS "-march=armv6m -mcpu=cortex-m0plus -mfloat-abi=soft -Wno-atomic-alignment" CACHE STRING "")
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petrhosek wrote:

That's because we use atomics for some internal API and there's no support unaligned accesses on Cortex-M0, but it's not a problem in practice because we don't do any unaligned accesses. We expect this will eventually get resolved by switching to TLS but we haven't had time to implement it yet.

https://github.com/llvm/llvm-project/pull/168942