Index: cmake/config-ix.cmake
===================================================================
--- cmake/config-ix.cmake
+++ cmake/config-ix.cmake
@@ -144,7 +144,7 @@
     find_library(ICONV_LIBRARY_PATH NAMES iconv libiconv libiconv-2 c)
     set(LLVM_LIBXML2_ENABLED 0)
     set(LIBXML2_FOUND 0)
-    if((LLVM_ENABLE_LIBXML2) AND ((CMAKE_SYSTEM_NAME MATCHES "Linux") AND (ICONV_LIBRARY_PATH) OR APPLE))
+    if((LLVM_ENABLE_LIBXML2) AND ((CMAKE_SYSTEM_NAME MATCHES "Linux") AND (ICONV_LIBRARY_PATH) OR APPLE) AND NOT CMAKE_SYSROOT)
       find_package(LibXml2)
       if (LIBXML2_FOUND)
         set(LLVM_LIBXML2_ENABLED 1)