Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -115,6 +115,7 @@
         ${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBCXX_INCLUDES}
         ${LIBCXXABI_LIBCXX_INCLUDE_DIRS}
         ${LLVM_INCLUDE_DIR}/c++/v1
+  NO_CMAKE_FIND_ROOT_PATH
   )
 
 set(LIBCXXABI_LIBCXX_INCLUDES "${LIBCXXABI_LIBCXX_INCLUDES}" CACHE PATH
@@ -127,6 +128,7 @@
         ${LIBCXXABI_LIBCXX_INCLUDES}/../
         ${LIBCXXABI_LIBCXX_SRC_DIRS}
   NO_DEFAULT_PATH
+  NO_CMAKE_FIND_ROOT_PATH
   )
 
 if (LIBCXXABI_LIBCXX_PATH STREQUAL "LIBCXXABI_LIBCXX_PATH-NOTFOUND")
@@ -425,6 +427,7 @@
           ${LLVM_MAIN_SRC_DIR}/projects/libunwind/include
           ${LLVM_MAIN_SRC_DIR}/runtimes/libunwind/include
     NO_DEFAULT_PATH
+    NO_CMAKE_FIND_ROOT_PATH
   )
 
   if (LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL STREQUAL "LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL-NOTFOUND")