build: fix opencv_world with CUDA

CMakeLists.txt

@@ -253,7 +253,7 @@ OCV_OPTION(INSTALL_TESTS            "Install accuracy and performance test binar
 
 # OpenCV build options
 # ===================================================
-OCV_OPTION(ENABLE_PRECOMPILED_HEADERS "Use precompiled headers"                                  ON   IF (NOT IOS) )
+OCV_OPTION(ENABLE_PRECOMPILED_HEADERS "Use precompiled headers"                                  ON IF (NOT IOS AND NOT CMAKE_CROSSCOMPILING AND NOT ((HAVE_CUDA OR WITH_CUDA) AND BUILD_opencv_world)) )
 OCV_OPTION(ENABLE_SOLUTION_FOLDERS    "Solution folder in Visual Studio or in other IDEs"        (MSVC_IDE OR CMAKE_GENERATOR MATCHES Xcode) )
 OCV_OPTION(ENABLE_PROFILING           "Enable profiling in the GCC compiler (Add flags: -g -pg)" OFF  IF CMAKE_COMPILER_IS_GNUCXX )
 OCV_OPTION(ENABLE_COVERAGE            "Enable coverage collection with  GCov"                    OFF  IF CMAKE_COMPILER_IS_GNUCXX )

cmake/OpenCVUtils.cmake

@@ -747,20 +747,9 @@ function(ocv_add_executable target)
 endfunction()
 
 function(ocv_add_library target)
-  set(cuda_objs "")
-  if(HAVE_CUDA)
-    set(cuda_srcs "")
-
-    foreach(var ${ARGN})
-      if(var MATCHES ".cu")
-        list(APPEND cuda_srcs ${var})
-      endif()
-    endforeach()
-
-    if(cuda_srcs)
-      ocv_include_directories(${CUDA_INCLUDE_DIRS})
-      ocv_cuda_compile(cuda_objs ${lib_cuda_srcs} ${lib_cuda_hdrs})
-    endif()
+  if(HAVE_CUDA AND ARGN MATCHES "\\.cu")
+    ocv_include_directories(${CUDA_INCLUDE_DIRS})
+    ocv_cuda_compile(cuda_objs ${ARGN})
     set(OPENCV_MODULE_${target}_CUDA_OBJECTS ${cuda_objs} CACHE INTERNAL "Compiled CUDA object files")
   endif()
 
@@ -771,9 +760,10 @@ function(ocv_add_library target)
       AND NOT OPENCV_MODULE_${target}_CHILDREN
       AND NOT OPENCV_MODULE_${target}_CLASS STREQUAL "BINDINGS"
       AND NOT ${target} STREQUAL "opencv_ts"
+      AND (NOT BUILD_opencv_world OR NOT HAVE_CUDA)
     )
     set(sources ${ARGN})
-    ocv_list_filterout(sources "\\\\.(cl|inc)$")
+    ocv_list_filterout(sources "\\\\.(cl|inc|cu)$")
     add_library(${target}_object OBJECT ${sources})
     set_target_properties(${target}_object PROPERTIES
       EXCLUDE_FROM_ALL True

modules/cudev/CMakeLists.txt

@@ -17,6 +17,6 @@ ocv_set_module_sources(HEADERS ${lib_hdrs} SOURCES ${lib_srcs})
 
 ocv_create_module()
 
-if(BUILD_TESTS)
+if(BUILD_TESTS AND NOT BUILD_opencv_world)
   add_subdirectory(test)
 endif()

modules/world/CMakeLists.txt

@@ -20,13 +20,13 @@ if(NOT OPENCV_INITIAL_PASS)
   foreach(m ${OPENCV_MODULES_BUILD})
     if(OPENCV_MODULE_${m}_IS_PART_OF_WORLD)
       message(STATUS "    module ${m}...")
-      set(CMAKE_CURRENT_SOURCE_DIR ${OPENCV_MODULE_${m}_LOCATION})
+      set(CMAKE_CURRENT_SOURCE_DIR "${OPENCV_MODULE_${m}_LOCATION}")
       #add_subdirectory("${OPENCV_MODULE_${m}_LOCATION}" ${CMAKE_CURRENT_BINARY_DIR}/${m})
       include_one_module(${m})
     endif()
   endforeach()
   message(STATUS "Processing WORLD modules... DONE")
-  set(CMAKE_CURRENT_SOURCE_DIR OPENCV_MODULE_${opencv_world}_LOCATION)
+  set(CMAKE_CURRENT_SOURCE_DIR "${OPENCV_MODULE_opencv_world_LOCATION}")
 endif()
 
 ocv_add_module(world opencv_core)