Automatically add CUDA support to a module if it has CUDA sources.

Backport from master.

cmake/OpenCVModule.cmake

@@ -432,11 +432,19 @@ macro(ocv_glob_module_sources)
   file(GLOB lib_hdrs "include/opencv2/${name}/*.hpp" "include/opencv2/${name}/*.h")
   file(GLOB lib_hdrs_detail "include/opencv2/${name}/detail/*.hpp" "include/opencv2/${name}/detail/*.h")
 
-  file(GLOB cl_kernels "src/opencl/*.cl")
+  file(GLOB lib_cuda_srcs "src/cuda/*.cu")
+  set(cuda_objs "")
+  set(lib_cuda_hdrs "")
 
-  source_group("Src" FILES ${lib_srcs} ${lib_int_hdrs})
-  source_group("Include" FILES ${lib_hdrs})
-  source_group("Include\\detail" FILES ${lib_hdrs_detail})
+  if(HAVE_CUDA AND lib_cuda_srcs)
+    ocv_include_directories(${CUDA_INCLUDE_DIRS})
+    file(GLOB lib_cuda_hdrs "src/cuda/*.hpp")
+
+    ocv_cuda_compile(cuda_objs ${lib_cuda_srcs} ${lib_cuda_hdrs})
+    source_group("Src\\Cuda"      FILES ${lib_cuda_srcs} ${lib_cuda_hdrs})
+  endif()
+
+  file(GLOB cl_kernels "src/opencl/*.cl")
 
   if(HAVE_OPENCL AND cl_kernels)
     ocv_include_directories(${OPENCL_INCLUDE_DIRS})
@@ -448,7 +456,12 @@ macro(ocv_glob_module_sources)
     list(APPEND lib_srcs ${cl_kernels} "${CMAKE_CURRENT_BINARY_DIR}/kernels.cpp")
   endif()
 
-  ocv_set_module_sources(${ARGN} HEADERS ${lib_hdrs} ${lib_hdrs_detail} SOURCES ${lib_srcs} ${lib_int_hdrs})
+  source_group("Src" FILES ${lib_srcs} ${lib_int_hdrs})
+  source_group("Include" FILES ${lib_hdrs})
+  source_group("Include\\detail" FILES ${lib_hdrs_detail})
+
+  ocv_set_module_sources(${ARGN} HEADERS ${lib_hdrs} ${lib_hdrs_detail}
+                                 SOURCES ${lib_srcs} ${lib_int_hdrs} ${cuda_objs} ${lib_cuda_srcs} ${lib_cuda_hdrs})
 endmacro()
 
 # creates OpenCV module in current folder
@@ -461,6 +474,9 @@ macro(ocv_create_module)
 
   if(NOT "${ARGN}" STREQUAL "SKIP_LINK")
     target_link_libraries(${the_module} ${OPENCV_MODULE_${the_module}_DEPS} ${OPENCV_MODULE_${the_module}_DEPS_EXT} ${OPENCV_LINKER_LIBS} ${IPP_LIBS} ${ARGN})
+    if (HAVE_CUDA)
+      target_link_libraries(${the_module} ${CUDA_LIBRARIES} ${CUDA_npp_LIBRARY})
+    endif()
     if(HAVE_OPENCL AND OPENCL_LIBRARIES)
       target_link_libraries(${the_module} ${OPENCL_LIBRARIES})
     endif()
@@ -545,8 +561,8 @@ endmacro()
 # ocv_define_module(module_name  [INTERNAL] [REQUIRED] [<list of dependencies>] [OPTIONAL <list of optional dependencies>])
 macro(ocv_define_module module_name)
   ocv_add_module(${module_name} ${ARGN})
-  ocv_glob_module_sources()
   ocv_module_include_directories()
+  ocv_glob_module_sources()
   ocv_create_module()
   ocv_add_precompiled_headers(${the_module})
 

modules/core/CMakeLists.txt

@@ -3,25 +3,21 @@ ocv_add_module(core ${ZLIB_LIBRARIES})
 ocv_module_include_directories(${ZLIB_INCLUDE_DIR})
 
 if(HAVE_CUDA)
-  ocv_source_group("Src\\Cuda" GLOB "src/cuda/*.cu")
-  ocv_include_directories("${OpenCV_SOURCE_DIR}/modules/gpu/include" ${CUDA_INCLUDE_DIRS})
+  ocv_include_directories("${OpenCV_SOURCE_DIR}/modules/gpu/include")
   ocv_warnings_disable(CMAKE_CXX_FLAGS -Wundef)
+endif()
 
-  file(GLOB lib_cuda "src/cuda/*.cu")
-  ocv_cuda_compile(cuda_objs ${lib_cuda})
+file(GLOB lib_cuda_hdrs        "include/opencv2/${name}/cuda/*.hpp"        "include/opencv2/${name}/cuda/*.h")
+file(GLOB lib_cuda_hdrs_detail "include/opencv2/${name}/cuda/detail/*.hpp" "include/opencv2/${name}/cuda/detail/*.h")
 
-  set(cuda_link_libs ${CUDA_LIBRARIES} ${CUDA_npp_LIBRARY})
-else()
-  set(lib_cuda "")
-  set(cuda_objs "")
-  set(cuda_link_libs "")
-endif()
+source_group("Cuda Headers"         FILES ${lib_cuda_hdrs})
+source_group("Cuda Headers\\Detail" FILES ${lib_cuda_hdrs_detail})
 
-ocv_glob_module_sources(SOURCES ${lib_cuda} ${cuda_objs} "${opencv_core_BINARY_DIR}/version_string.inc")
+ocv_glob_module_sources(SOURCES "${opencv_core_BINARY_DIR}/version_string.inc"
+                        HEADERS ${lib_cuda_hdrs} ${lib_cuda_hdrs_detail})
 
-ocv_create_module(${cuda_link_libs})
+ocv_create_module()
 ocv_add_precompiled_headers(${the_module})
 
 ocv_add_accuracy_tests()
 ocv_add_perf_tests()
-

modules/nonfree/CMakeLists.txt

@@ -3,28 +3,5 @@ if(BUILD_ANDROID_PACKAGE)
 endif()
 
 set(the_description "Functionality with possible limitations on the use")
-ocv_add_module(nonfree opencv_imgproc opencv_features2d opencv_calib3d OPTIONAL opencv_gpu opencv_ocl)
-ocv_module_include_directories()
-
-if(HAVE_CUDA AND HAVE_opencv_gpu)
-  ocv_source_group("Src\\Cuda" GLOB "src/cuda/*.cu")
-  ocv_include_directories("${OpenCV_SOURCE_DIR}/modules/gpu/include" ${CUDA_INCLUDE_DIRS})
-  ocv_warnings_disable(CMAKE_CXX_FLAGS -Wundef)
-
-  file(GLOB lib_cuda "src/cuda/*.cu")
-  ocv_cuda_compile(cuda_objs ${lib_cuda})
-
-  set(cuda_link_libs ${CUDA_LIBRARIES} ${CUDA_npp_LIBRARY})
-else()
-  set(lib_cuda "")
-  set(cuda_objs "")
-  set(cuda_link_libs "")
-endif()
-
-ocv_glob_module_sources(SOURCES ${lib_cuda} ${cuda_objs})
-
-ocv_create_module(${cuda_link_libs})
-ocv_add_precompiled_headers(${the_module})
-
-ocv_add_accuracy_tests()
-ocv_add_perf_tests()
+ocv_warnings_disable(CMAKE_CXX_FLAGS -Wundef)
+ocv_define_module(nonfree opencv_imgproc opencv_features2d opencv_calib3d OPTIONAL opencv_gpu opencv_ocl)

modules/nonfree/src/cuda/surf.cu

@@ -40,7 +40,9 @@
 //
 //M*/
 
-#if !defined CUDA_DISABLER
+#include "opencv2/opencv_modules.hpp"
+
+#ifdef HAVE_OPENCV_GPU
 
 #include "opencv2/gpu/device/common.hpp"
 #include "opencv2/gpu/device/limits.hpp"
@@ -956,4 +958,4 @@ namespace cv { namespace gpu { namespace device
 }}} // namespace cv { namespace gpu { namespace device
 
 
-#endif /* CUDA_DISABLER */
+#endif /* HAVE_OPENCV_GPU */

modules/nonfree/src/cuda/vibe.cu

@@ -40,7 +40,9 @@
 //
 //M*/
 
-#if !defined CUDA_DISABLER
+#include "opencv2/opencv_modules.hpp"
+
+#ifdef HAVE_OPENCV_GPU
 
 #include "opencv2/gpu/device/common.hpp"
 
@@ -266,5 +268,4 @@ namespace cv { namespace gpu { namespace device
     }
 }}}
 
-
-#endif /* CUDA_DISABLER */
+#endif /* HAVE_OPENCV_GPU */

modules/superres/CMakeLists.txt

@@ -3,29 +3,5 @@ if(ANDROID OR IOS)
 endif()
 
 set(the_description "Super Resolution")
-ocv_add_module(superres opencv_imgproc opencv_video OPTIONAL opencv_gpu opencv_highgui)
-ocv_module_include_directories()
-
-ocv_warnings_disable(CMAKE_CXX_FLAGS -Wundef /wd4127)
-
-if(HAVE_CUDA)
-  ocv_source_group("Src\\Cuda" GLOB "src/cuda/*.cu")
-  ocv_include_directories("${OpenCV_SOURCE_DIR}/modules/gpu/include" ${CUDA_INCLUDE_DIRS})
-
-  file(GLOB lib_cuda "src/cuda/*.cu")
-  ocv_cuda_compile(cuda_objs ${lib_cuda})
-
-  set(cuda_link_libs ${CUDA_LIBRARIES})
-else()
-  set(lib_cuda "")
-  set(cuda_objs "")
-  set(cuda_link_libs "")
-endif()
-
-ocv_glob_module_sources(SOURCES ${lib_cuda} ${cuda_objs})
-
-ocv_create_module(${cuda_link_libs})
-ocv_add_precompiled_headers(${the_module})
-
-ocv_add_accuracy_tests()
-ocv_add_perf_tests()
+ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4127 -Wundef)
+ocv_define_module(superres opencv_imgproc opencv_video OPTIONAL opencv_gpu opencv_highgui)

modules/superres/src/cuda/btv_l1_gpu.cu

@@ -40,6 +40,10 @@
 //
 //M*/
 
+#include "opencv2/opencv_modules.hpp"
+
+#ifdef HAVE_OPENCV_GPU
+
 #include "opencv2/gpu/device/common.hpp"
 #include "opencv2/gpu/device/transform.hpp"
 #include "opencv2/gpu/device/vec_traits.hpp"
@@ -232,3 +236,5 @@ namespace btv_l1_device
     template void calcBtvRegularization<3>(PtrStepSzb src, PtrStepSzb dst, int ksize);
     template void calcBtvRegularization<4>(PtrStepSzb src, PtrStepSzb dst, int ksize);
 }
+
+#endif /* HAVE_OPENCV_GPU */