Index: llvm/runtimes/CMakeLists.txt
===================================================================
--- llvm/runtimes/CMakeLists.txt
+++ llvm/runtimes/CMakeLists.txt
@@ -452,11 +452,12 @@
       if("${out}" EQUAL 0)
         string(REPLACE "RUNTIMES_${name}_" "" new_name ${variableName})
         list(APPEND ${name}_extra_args "-D${new_name}=${${variableName}}")
-      endif()
-      string(FIND "${variableName}" "RUNTIMES_${target}_" out)
-      if("${out}" EQUAL 0)
-        string(REPLACE "RUNTIMES_${target}_" "" new_name ${variableName})
-        list(APPEND ${name}_extra_args "-D${new_name}=${${variableName}}")
+      else()
+        string(FIND "${variableName}" "RUNTIMES_${target}_" out)
+        if("${out}" EQUAL 0)
+          string(REPLACE "RUNTIMES_${target}_" "" new_name ${variableName})
+          list(APPEND ${name}_extra_args "-D${new_name}=${${variableName}}")
+        endif()
       endif()
     endforeach()