Fix build if ITTAPI_SOURCE_DIR is specified (llvm#106924)

de92615 allows specifying the source directory of ittapi. This
change allows configuring the source directory of ittapi here as well.

(cherry picked from commit f8287f6)

Author: Zentrik

llvm/lib/ExecutionEngine/IntelJITEvents/CMakeLists.txt

@@ -1,5 +1,8 @@
 include_directories( ${CMAKE_CURRENT_SOURCE_DIR}/.. )
-include_directories( ${PROJECT_BINARY_DIR}/ittapi/include/ )
+if(NOT DEFINED ITTAPI_SOURCE_DIR)
+    set(ITTAPI_SOURCE_DIR ${PROJECT_BINARY_DIR})
+endif()
+include_directories( ${ITTAPI_SOURCE_DIR}/ittapi/include/ )
 add_llvm_component_library(LLVMIntelJITEvents
   IntelJITEventListener.cpp
 

llvm/lib/ExecutionEngine/Orc/TargetProcess/CMakeLists.txt

@@ -6,7 +6,10 @@ set(intel_jit_profiling )
 if( LLVM_USE_INTEL_JITEVENTS )
   set(intel_jit_profiling IntelJITProfiling)
   include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../IntelJITProfiling)
-  include_directories(${PROJECT_BINARY_DIR}/ittapi/include/ )
+  if(NOT DEFINED ITTAPI_SOURCE_DIR)
+      set(ITTAPI_SOURCE_DIR ${PROJECT_BINARY_DIR})
+  endif()
+  include_directories(${ITTAPI_SOURCE_DIR}/ittapi/include/ )
 endif()
 
 add_llvm_component_library(LLVMOrcTargetProcess