Update CMake found CUDA summary

Reviewed By: rbgirshick

Differential Revision: D8614301

fbshipit-source-id: 384df17bebd0a0186a0867cf16a7a7dfea5646ae

CMakeLists.txt

@@ -38,7 +38,7 @@ target_link_libraries(caffe2_detectron_custom_ops caffe2_library)
 install(TARGETS caffe2_detectron_custom_ops DESTINATION lib)
 
 # Install custom GPU ops lib, if gpu is present.
-if ("${CAFFE2_USE_CUDA}" OR "${CAFFE2_FOUND_CUDA}")
+if (CAFFE2_USE_CUDA OR CAFFE2_FOUND_CUDA)
   # Additional -I prefix is required for CMake versions before commit (< 3.7):
   # https://github.com/Kitware/CMake/commit/7ded655f7ba82ea72a82d0555449f2df5ef38594
   list(APPEND CUDA_INCLUDE_DIRS -I${CAFFE2_INCLUDE_DIRS})

cmake/Summary.cmake

@@ -11,9 +11,11 @@ function (detectron_print_config_summary)
   message(STATUS "  CXX flags            : ${CMAKE_CXX_FLAGS}")
   message(STATUS "  Caffe2 version       : ${CAFFE2_VERSION}")
   message(STATUS "  Caffe2 include path  : ${CAFFE2_INCLUDE_DIRS}")
-  message(STATUS "  Caffe2 found CUDA    : ${CAFFE2_FOUND_CUDA}")
-  if ("${CAFFE2_USE_CUDA}" OR "${CAFFE2_FOUND_CUDA}")
+  if (CAFFE2_USE_CUDA OR CAFFE2_FOUND_CUDA)
+    message(STATUS "  Caffe2 found CUDA    : True")
     message(STATUS "    CUDA version       : ${CUDA_VERSION}")
     message(STATUS "    CuDNN version      : ${CUDNN_VERSION}")
+  else()
+    message(STATUS "  Caffe2 found CUDA    : False")
   endif()
 endfunction()