--- Libc/Libc-825.26/xcodescripts/libc.xcconfig
+++ Libc/Libc-825.25/xcodescripts/libc.xcconfig
@@ -24,6 +24,7 @@
 
 BUILD_VARIANTS = normal debug
 
+// clang is desired over llvm-gcc for OSAtomics. However, it isn't capable of building armv6 correctly on Sundance
 GCC_VERSION = com.apple.compilers.llvm.clang.1_0
 GCC_VERSION[arch=armv6] = com.apple.compilers.llvmgcc42