[CMake] Fixing clang standalone build

I broke this in r288770. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288829 91177308-0d34-0410-b5e6-96231b3b80d8
hacxman · Dec 6, 2016 · 461b461 · 461b461
1 parent 057100d
commit 461b461
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -803,8 +803,6 @@ endif()
 include(AddLLVM)
 include(TableGen)
 
-set(LLVM_TABLEGEN_FLAGS -I ${LLVM_MAIN_INCLUDE_DIR})
-
 if( MINGW )
   # People report that -O3 is unreliable on MinGW. The traditional
   # build also uses -O2 for that reason:

diff --git a/cmake/modules/TableGen.cmake b/cmake/modules/TableGen.cmake
@@ -4,6 +4,10 @@
 
 include(LLVMExternalProjectUtils)
 
+if(LLVM_MAIN_INCLUDE_DIR)
+  set(LLVM_TABLEGEN_FLAGS -I ${LLVM_MAIN_INCLUDE_DIR})
+endif()
+
 function(tablegen project ofn)
   # Validate calling context.
   if(NOT ${project}_TABLEGEN_EXE)