Index: compiler-rt/lib/sanitizer_common/symbolizer/scripts/build_symbolizer.sh
===================================================================
--- compiler-rt/lib/sanitizer_common/symbolizer/scripts/build_symbolizer.sh
+++ compiler-rt/lib/sanitizer_common/symbolizer/scripts/build_symbolizer.sh
@@ -98,12 +98,10 @@
     -DLIBCXXABI_ENABLE_ASSERTIONS=OFF \
     -DLIBCXXABI_ENABLE_EXCEPTIONS=OFF \
     -DLIBCXXABI_ENABLE_SHARED=OFF \
-    -DLIBCXXABI_ENABLE_THREADS=OFF \
     -DLIBCXX_ENABLE_ASSERTIONS=OFF \
     -DLIBCXX_ENABLE_EXCEPTIONS=OFF \
     -DLIBCXX_ENABLE_RTTI=OFF \
     -DLIBCXX_ENABLE_SHARED=OFF \
-    -DLIBCXX_ENABLE_THREADS=OFF \
   $LLVM_SRC
 fi
 cd ${LIBCXX_BUILD}