Add USE_SYSTEM_LIBRARIES option for distro packagers

Signed-off-by: Alexander F. Lent <[email protected]>

Author: xanderlent

CMakeLists.txt

@@ -37,6 +37,8 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 option(ENABLE_OPENVINO_PACKAGE "Enable building the OpenVINO package" OFF)
 option(ENABLE_NPU_COMPILER_BUILD "Enable building compiler in driver" OFF)
 option(ENABLE_NPU_PERFETTO_BUILD "Enable building with Perfetto library" OFF)
+# TODO: USE_SYSTEM_LIBRARIES should also unvendor the kernel uapi header.
+option(USE_SYSTEM_LIBRARIES "Use system versions of third_party libraries" OFF)
 
 message(STATUS "option ENABLE_NPU_COMPILER_BUILD: ${ENABLE_NPU_COMPILER_BUILD}")
 message(STATUS "option ENABLE_NPU_PERFETTO_BUILD: ${ENABLE_NPU_PERFETTO_BUILD}")

third_party/CMakeLists.txt

@@ -10,13 +10,21 @@ add_compile_options(-Wno-error -include cstdint)
 include(cmake/vpux_elf.cmake)
 include(cmake/level-zero.cmake)
 include(cmake/level-zero-npu-extensions.cmake)
+# TODO: Handle USE_SYSTEM_LIBRARIES for Perfetto SDK, too
 if (ENABLE_NPU_PERFETTO_BUILD)
+  if (USE_SYSTEM_LIBRARIES)
+	  message(FATAL_ERROR "USE_SYSTEM_LIBRARIES is not yet implemented for the Perfetto SDK")
+  endif()
   include(cmake/perfetto.cmake)
 endif()
 
-set(INSTALL_GTEST OFF)
-add_subdirectory(googletest EXCLUDE_FROM_ALL)
+if (NOT USE_SYSTEM_LIBRARIES)
+  set(INSTALL_GTEST OFF)
+  add_subdirectory(googletest EXCLUDE_FROM_ALL)
 
-set(YAML_CPP_INSTALL OFF)
-set(BUILD_SHARED_LIBS OFF)
-add_subdirectory(yaml-cpp EXCLUDE_FROM_ALL)
+  set(YAML_CPP_INSTALL OFF)
+  set(BUILD_SHARED_LIBS OFF)
+  add_subdirectory(yaml-cpp EXCLUDE_FROM_ALL)
+else()
+  message(STATUS "USE_SYSTEM_LIBRARIES excluded the vendored gtest/gmock and yaml-cpp from the build")
+endif()

third_party/cmake/level-zero-npu-extensions.cmake

@@ -9,6 +9,11 @@
 # This software and the related documents are provided as is, with no express or
 # implied warranties, other than those that are expressly stated in the License.
 
+# TODO: Detect empty directory and upgrade to warning then regardless
+if (USE_SYSTEM_LIBRARIES)
+  message(STATUS "USE_SYSTEM_LIBRARIES does not apply to level-zero-npu-extensions; it must always be vendored.")
+endif()
+
 set(LEVEL_ZERO_EXT_HEADERS_DIR "${CMAKE_BINARY_DIR}/include/level_zero")
 file(MAKE_DIRECTORY ${LEVEL_ZERO_EXT_HEADERS_DIR})
 file(GLOB_RECURSE LEVEL_ZERO_HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/level-zero-npu-extensions/*.h)

third_party/cmake/level-zero.cmake

@@ -21,6 +21,9 @@ endif()
 find_package(LevelZero ${LEVEL_ZERO_VERSION})
 
 if(NOT LevelZero_FOUND)
+  if(USE_SYSTEM_LIBRARIES)
+    message(FATAL_ERROR "LevelZero was not found and USE_SYSTEM_LIBRARIES was requested.")
+  endif()
   message(STATUS "LevelZero not found in the system, take one from third_party/level_zero")
 
   # EXCLUDE_FROM_ALL is used because level-zero-devel install destination starts with root

third_party/cmake/vpux_elf.cmake

@@ -15,6 +15,11 @@ if (TARGET vpux_elf)
   return()
 endif()
 
+# TODO: Detect empty directory and upgrade to warning then regardless
+if (USE_SYSTEM_LIBRARIES)
+  message(STATUS "USE_SYSTEM_LIBRARIES does not apply to vpux_elf; it must always be vendored.")
+endif()
+
 # Below function is required by vpux_elf
 function(enable_warnings_as_errors TARGET_NAME)
   target_compile_options(${TARGET_NAME} PRIVATE -Wall -Wextra -Werror)