From 0eb176c81587908454860109f1b2ac70dcb2cef6 Mon Sep 17 00:00:00 2001
From: Andrey Somsikov <andrey.somsikov@intel.com>
Date: Wed, 14 Oct 2020 13:08:06 +0300
Subject: [PATCH] Use  ittnotify built from sources (#2577)

* Use  ittnotify built from sources

ITT tracing was only possible on the platfroms supported by VTune.
Building ittnotify from sources removes VTune dependency.

ITT traces was found significantly slowdown tests execution time.
Disabling ENABLE_PROFILING_ITT by default. This is also
a current behavior of Intel Distribution of OpenVINO.

* Fix missprint

* Add include directories to itt
---
 cmake/features.cmake        |  2 +-
 openvino/itt/CMakeLists.txt | 35 ++++++++++++++++++++++++++++++++---
 2 files changed, 33 insertions(+), 4 deletions(-)

diff --git a/cmake/features.cmake b/cmake/features.cmake
index 804e75a3477..91d30c4a6ac 100644
--- a/cmake/features.cmake
+++ b/cmake/features.cmake
@@ -44,7 +44,7 @@ ie_dependent_option (ENABLE_AVX2 "Enable AVX2 optimizations" ON "X86_64 OR X86"
 
 ie_dependent_option (ENABLE_AVX512F "Enable AVX512 optimizations" ON "X86_64 OR X86" OFF)
 
-ie_dependent_option (ENABLE_PROFILING_ITT "ITT tracing of IE and plugins internals" ON "NOT CMAKE_CROSSCOMPILING" OFF)
+ie_option (ENABLE_PROFILING_ITT "Build with ITT tracing. Optionally configure pre-built ittnotify library though INTEL_VTUNE_DIR variable." OFF)
 
 # Documentation build
 ie_option (ENABLE_DOCS "build docs using Doxygen" OFF)
diff --git a/openvino/itt/CMakeLists.txt b/openvino/itt/CMakeLists.txt
index 66733017822..60d2386e1b6 100644
--- a/openvino/itt/CMakeLists.txt
+++ b/openvino/itt/CMakeLists.txt
@@ -21,9 +21,38 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 file(GLOB_RECURSE SOURCES "src/*.cpp")
 
 if(ENABLE_PROFILING_ITT)
-    find_package(ITT)
-    if(NOT ITT_FOUND)
-        message(WARNING "Profiling option enabled, but no ITT library was found")
+    if(DEFINED INTEL_VTUNE_DIR OR DEFINED ENV{INTEL_VTUNE_DIR})
+        find_package(ITT)
+        if(NOT ITT_FOUND)
+            message(WARNING "Profiling option enabled, but no ITT library was found under INTEL_VTUNE_DIR")
+        endif()
+    else()
+        include(ExternalProject)
+        set(ITTAPI_BINARY_DIR  ${CMAKE_CURRENT_BINARY_DIR}/ittapi/build)
+        set(ITTAPI_SOURCE_DIR  ${CMAKE_CURRENT_BINARY_DIR}/ittapi/source)
+        set(ITTNOTIFY_LIBRARY  ${ITTAPI_BINARY_DIR}/bin/${CMAKE_STATIC_LIBRARY_PREFIX}ittnotify${CMAKE_STATIC_LIBRARY_SUFFIX})
+        ExternalProject_Add(
+            ext_ittapi
+            PREFIX ittapi
+            GIT_REPOSITORY https://github.com/intel/ittapi.git
+            GIT_TAG v3.18.6
+            LOG_DOWNLOAD ON
+            LOG_CONFIGURE ON
+            LOG_BUILD ON
+            INSTALL_COMMAND ""
+            UPDATE_COMMAND ""
+            CMAKE_GENERATOR ${CMAKE_GENERATOR}
+            CMAKE_GENERATOR_PLATFORM ${CMAKE_GENERATOR_PLATFORM}
+            CMAKE_GENERATOR_TOOLSET ${CMAKE_GENERATOR_TOOLSET}
+            BINARY_DIR ${ITTAPI_BINARY_DIR}
+            SOURCE_DIR ${ITTAPI_SOURCE_DIR}
+            EXCLUDE_FROM_ALL TRUE
+            BUILD_BYPRODUCTS ${ITTNOTIFY_LIBRARY})
+        add_library(ittnotify INTERFACE)
+        add_dependencies(ittnotify ittapi_external)
+        target_link_libraries(ittnotify INTERFACE ${ITTNOTIFY_LIBRARY})
+        target_include_directories(ittnotify INTERFACE ${ITTAPI_SOURCE_DIR}/include)
+        openvino_developer_export_targets(ittnotify)
     endif()
 endif()