From b7cfd5a7dad40cc36f729953acf540c9aca6079b Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.alekhin@itseez.com>
Date: Thu, 11 Jun 2015 15:36:29 +0300
Subject: [PATCH] ocl: added errors processing in OpenCL code generator,
 resolve space issue

---
 cmake/OpenCVModule.cmake | 2 +-
 cmake/cl2cpp.cmake       | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/cmake/OpenCVModule.cmake b/cmake/OpenCVModule.cmake
index a1a1b90202..62714d92d8 100644
--- a/cmake/OpenCVModule.cmake
+++ b/cmake/OpenCVModule.cmake
@@ -662,7 +662,7 @@ macro(ocv_glob_module_sources)
     ocv_include_directories(${OPENCL_INCLUDE_DIRS})
     add_custom_command(
       OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${OCL_NAME}.cpp" "${CMAKE_CURRENT_BINARY_DIR}/${OCL_NAME}.hpp"
-      COMMAND ${CMAKE_COMMAND} -DMODULE_NAME="${name}" -DCL_DIR="${CMAKE_CURRENT_LIST_DIR}/src/opencl" -DOUTPUT="${CMAKE_CURRENT_BINARY_DIR}/${OCL_NAME}.cpp" -P "${OpenCV_SOURCE_DIR}/cmake/cl2cpp.cmake"
+      COMMAND ${CMAKE_COMMAND} "-DMODULE_NAME=${name}" "-DCL_DIR=${CMAKE_CURRENT_LIST_DIR}/src/opencl" "-DOUTPUT=${CMAKE_CURRENT_BINARY_DIR}/${OCL_NAME}.cpp" -P "${OpenCV_SOURCE_DIR}/cmake/cl2cpp.cmake"
       DEPENDS ${cl_kernels} "${OpenCV_SOURCE_DIR}/cmake/cl2cpp.cmake")
     ocv_source_group("Src\\opencl\\kernels" FILES ${cl_kernels})
     ocv_source_group("Src\\opencl\\kernels\\autogenerated" FILES "${CMAKE_CURRENT_BINARY_DIR}/${OCL_NAME}.cpp" "${CMAKE_CURRENT_BINARY_DIR}/${OCL_NAME}.hpp")
diff --git a/cmake/cl2cpp.cmake b/cmake/cl2cpp.cmake
index 700f12fb5c..c0e211b900 100644
--- a/cmake/cl2cpp.cmake
+++ b/cmake/cl2cpp.cmake
@@ -1,6 +1,14 @@
+if (NOT EXISTS "${CL_DIR}")
+  message(FATAL_ERROR "Specified wrong OpenCL kernels directory: ${CL_DIR}")
+endif()
+
 file(GLOB cl_list "${CL_DIR}/*.cl" )
 list(SORT cl_list)
 
+if (NOT cl_list)
+  message(FATAL_ERROR "Can't find OpenCL kernels in directory: ${CL_DIR}")
+endif()
+
 string(REPLACE ".cpp" ".hpp" OUTPUT_HPP "${OUTPUT}")
 get_filename_component(OUTPUT_HPP_NAME "${OUTPUT_HPP}" NAME)