From d334a86a9fbd589d23cd3ee00c5729f477158989 Mon Sep 17 00:00:00 2001
From: Chris Bieneman <beanz@apple.com>
Date: Fri, 23 Oct 2015 19:48:17 +0000
Subject: [PATCH] [CMake] Fixing dependency issue with parallel make when
 building with LLVM_OPTIMIZED_TABLEGEN.

Patch by Alex Wang

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251138 91177308-0d34-0410-b5e6-96231b3b80d8
---
 cmake/modules/TableGen.cmake | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/cmake/modules/TableGen.cmake b/cmake/modules/TableGen.cmake
index cb06450959a..fca7d1bda4b 100644
--- a/cmake/modules/TableGen.cmake
+++ b/cmake/modules/TableGen.cmake
@@ -77,6 +77,13 @@ if(LLVM_USE_HOST_TOOLS)
       WORKING_DIRECTORY ${LLVM_NATIVE_BUILD}
       COMMENT "Building libLLVMSupport for native TableGen...")
   add_custom_target(NATIVE_LIB_LLVMSUPPORT DEPENDS LIB_LLVMSUPPORT)
+
+  add_custom_command(OUTPUT LIB_LLVMTABLEGEN
+      COMMAND ${CMAKE_COMMAND} --build . --target LLVMTableGen --config Release
+      DEPENDS CONFIGURE_LLVM_NATIVE
+      WORKING_DIRECTORY ${LLVM_NATIVE_BUILD}
+      COMMENT "Building libLLVMTableGen for native TableGen...")
+  add_custom_target(NATIVE_LIB_LLVMTABLEGEN DEPENDS LIB_LLVMTABLEGEN)
 endif(LLVM_USE_HOST_TOOLS)
 
 macro(add_tablegen target project)
@@ -118,7 +125,7 @@ macro(add_tablegen target project)
 
       add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE}
         COMMAND ${CMAKE_COMMAND} --build . --target ${target} --config Release
-        DEPENDS ${target} NATIVE_LIB_LLVMSUPPORT
+        DEPENDS ${target} NATIVE_LIB_LLVMSUPPORT NATIVE_LIB_LLVMTABLEGEN
         WORKING_DIRECTORY ${LLVM_NATIVE_BUILD}
         COMMENT "Building native TableGen...")
       add_custom_target(${project}-tablegen-host DEPENDS ${${project}_TABLEGEN_EXE})
-- 
2.34.1