CMake: Revert r79144. It reverted a change necessary for correct
parallel builds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79177 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 068ef96..32dcae7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -266,6 +266,7 @@
 set(LLVM_ENUM_ASM_PARSERS "")
 foreach(t ${LLVM_TARGETS_TO_BUILD})
   message(STATUS "Targeting ${t}")
+  set(CURRENT_LLVM_TARGET ${t})
   add_subdirectory(lib/Target/${t})
   add_subdirectory(lib/Target/${t}/TargetInfo)
   if( EXISTS ${LLVM_MAIN_SRC_DIR}/lib/Target/${t}/AsmPrinter/CMakeLists.txt )
@@ -278,6 +279,7 @@
     set(LLVM_ENUM_ASM_PARSERS 
       "${LLVM_ENUM_ASM_PARSERS}LLVM_ASM_PARSER(${t})\n")
   endif( EXISTS ${LLVM_MAIN_SRC_DIR}/lib/Target/${t}/AsmParser/CMakeLists.txt )
+  set(CURRENT_LLVM_TARGET)
 endforeach(t)
 
 # Produce llvm/Config/AsmPrinters.def