[CMake] Fix external llvm build. It needs to know where llvm-tblgen is.

llvm-svn: 169794

diff --git a/lld/CMakeLists.txt b/lld/CMakeLists.txt
index 2a72022..6211f63 100644 (file)
--- a/lld/CMakeLists.txt
+++ b/lld/CMakeLists.txt
@@ -29,6 +29,7 @@ if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
                          ABSOLUTE)
 
   include(AddLLVM)
+  include(TableGen)
   include("${LLD_PATH_TO_LLVM_BUILD}/share/llvm/cmake/LLVMConfig.cmake")
   include(HandleLLVMOptions)
 
@@ -42,6 +43,13 @@ if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
                       "${LLVM_MAIN_INCLUDE_DIR}")
   link_directories("${PATH_TO_LLVM_BUILD}/lib")
 
+  if( EXISTS "${LLD_PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}" )
+    set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}")
+  else()
+    # FIXME: This is an utter hack.
+    set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/Debug/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}")
+  endif()
+
   set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
   set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
   set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)