Fix build error, include generated headers

Author: kostasalv

bolt/lib/Target/PowerPC/CMakeLists.txt

@@ -1,8 +1,16 @@
 add_llvm_library(LLVMBOLTTargetPowerPC
     PPCMCPlusBuilder.cpp
-  )
+)
 
 target_include_directories(LLVMBOLTTargetPowerPC PRIVATE
     ${LLVM_BINARY_DIR}/include
     ${LLVM_SOURCE_DIR}/include
+)
+
+file(MAKE_DIRECTORY "${LLVM_BINARY_DIR}/include/llvm/Target/PowerPC")
+
+add_custom_command(TARGET LLVMBOLTTargetPowerPC POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+        "${LLVM_BINARY_DIR}/lib/Target/PowerPC/PPCGenInstrInfo.inc"
+        "${LLVM_BINARY_DIR}/include/llvm/Target/PowerPC/PPCGenInstrInfo.inc"
 )