From 36ebf4ef0dce1bb9027291c768a016291c4a28f7 Mon Sep 17 00:00:00 2001
From: Anatoly Baksheev <no@email>
Date: Thu, 25 Nov 2010 10:42:09 +0000
Subject: [PATCH] cuda+npp version check at configure time.

---
 CMakeLists.txt              |  8 ++++----
 modules/gpu/CMakeLists.txt  |  3 ++-
 modules/gpu/FindNPP.cmake   | 25 ++++++++++++++-----------
 modules/gpu/src/precomp.hpp |  6 ++++++
 4 files changed, 26 insertions(+), 16 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f0bba02..f6a29bb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -647,11 +647,11 @@ endif()
 ############################### CUDA ################################
 
 if (WITH_CUDA)
-	find_package(CUDA)
-	if (CUDA_FOUND)
-		message(STATUS "CUDA detected.")
+	find_package(CUDA 3.2)
+	if (CUDA_FOUND)		
 		set(HAVE_CUDA 1)
-
+		message(STATUS "CUDA detected: " ${CUDA_VERSION})
+		
 		set(CUDA_COMPUTE_CAPABILITIES " 1.0 1.1 1.2 1.3 2.0 " CACHE STRING "Add or remove compute capability")
 		set(CUDA_NVCC_FLAGS_ARCH ${CUDA_COMPUTE_CAPABILITIES})
 
diff --git a/modules/gpu/CMakeLists.txt b/modules/gpu/CMakeLists.txt
index 5694478..8181c3d 100644
--- a/modules/gpu/CMakeLists.txt
+++ b/modules/gpu/CMakeLists.txt
@@ -35,7 +35,8 @@ source_group("Include" FILES ${lib_hdrs})
 if (HAVE_CUDA)		
 	get_filename_component(_path_to_findnpp "${CMAKE_CURRENT_LIST_FILE}" PATH)
 	set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${_path_to_findnpp})	
-	find_package(NPP REQUIRED)
+	find_package(NPP 3.2.16 REQUIRED)
+	message(STATUS "NPP detected: " ${NPP_VERSION})
 
 	include_directories(${CUDA_INCLUDE_DIRS} ${CUDA_NPP_INCLUDES})	
 	
diff --git a/modules/gpu/FindNPP.cmake b/modules/gpu/FindNPP.cmake
index 1bf0189..c3b6257 100644
--- a/modules/gpu/FindNPP.cmake
+++ b/modules/gpu/FindNPP.cmake
@@ -95,26 +95,29 @@ if(EXISTS ${CUDA_NPP_INCLUDES}/nppversion.h)
 	string( REGEX MATCH "[0-9]+" npp_major ${npp_major} ) 
 	string( REGEX MATCH "[0-9]+" npp_minor ${npp_minor} ) 
 	string( REGEX MATCH "[0-9]+" npp_build ${npp_build} ) 	
-	set( NPP_VERSION "${npp_major}.${npp_minor}.${npp_build}")
-	MESSAGE(STATUS "Npp version: " ${NPP_VERSION})
+	set( NPP_VERSION "${npp_major}.${npp_minor}.${npp_build}")	
 endif()
-
+
 if(NOT EXISTS ${CUDA_NPP_LIBRARIES} OR NOT EXISTS ${CUDA_NPP_INCLUDES}/npp.h)
-	set(CUDA_NPP_FOUND FALSE)
-	unset(CUDA_NPP_INCLUDES CACHE)
-	unset(CUDA_NPP_LIBRARIES CACHE)
-	
+	set(CUDA_NPP_FOUND FALSE)	
 	message(FATAL_ERROR "NPP headers/libraries are not found. Please specify CUDA_NPP_LIBRARY_ROOT_DIR in CMake or set $NPP_ROOT_DIR.")	
 endif()
-	
+
+include( FindPackageHandleStandardArgs ) 
+find_package_handle_standard_args( NPP 
+	REQUIRED_VARS 
+		CUDA_NPP_INCLUDES 
+		CUDA_NPP_LIBRARIES 
+	VERSION_VAR 
+		NPP_VERSION)
+
 if(APPLE)
-	# We need to add the path to cudart to the linker using rpath, since the
-	# library name for the cuda libraries is prepended with @rpath.
+	# We need to add the path to cudart to the linker using rpath, since the library name for the cuda libraries is prepended with @rpath.
 	get_filename_component(_cuda_path_to_npp "${CUDA_NPP_LIBRARIES}" PATH)
 	if(_cuda_path_to_npp)
 		list(APPEND CUDA_NPP_LIBRARIES -Wl,-rpath "-Wl,${_cuda_path_to_npp}")
 	endif()
-endif()	
+endif()
 
 set(CUDA_NPP_FOUND TRUE)
 set(CUDA_NPP_LIBRARY_ROOT_DIR_INTERNAL "${CUDA_NPP_LIBRARY_ROOT_DIR}" CACHE INTERNAL "This is the value of the last time CUDA_NPP_LIBRARY_ROOT_DIR was set successfully." FORCE)
diff --git a/modules/gpu/src/precomp.hpp b/modules/gpu/src/precomp.hpp
index a0ec26a..8f1ced7 100644
--- a/modules/gpu/src/precomp.hpp
+++ b/modules/gpu/src/precomp.hpp
@@ -67,12 +67,18 @@
     #include "opencv2/gpu/stream_accessor.hpp"
     #include "npp.h"    
 
+#define CUDART_MINIMUM_REQUIRED_VERSION 3020
 #define NPP_MINIMUM_REQUIRED_VERSION 3216
 
+#if (CUDART_VERSION < CUDART_MINIMUM_REQUIRED_VERSION)
+    #error "Insufficient Cuda Runtime library version, please update it."
+#endif
+
 #if (NPP_VERSION_MAJOR*1000+NPP_VERSION_MINOR*100+NPP_VERSION_BUILD < NPP_MINIMUM_REQUIRED_VERSION)
     #error "Insufficient NPP version, please update it."
 #endif
 
+
 #else /* defined(HAVE_CUDA) */
 
     static inline void throw_nogpu() { CV_Error(CV_GpuNotSupported, "The library is compilled without GPU support"); }
-- 
2.7.4