#645 Added cv::getBuildInformation function (with sample) to get OpenCV build configuration

modules/core/CMakeLists.txt

@@ -16,7 +16,13 @@ else()
   set(cuda_link_libs "")
 endif()
 
-ocv_glob_module_sources(SOURCES ${lib_cuda} ${cuda_objs})
+set(OPENCV_VERSION_FILE "${opencv_core_BINARY_DIR}/version_string.inc")
+add_custom_command(OUTPUT "${OPENCV_VERSION_FILE}"
+                   COMMAND ${CMAKE_COMMAND} -E copy_if_different "${OPENCV_BUILD_INFO_FILE}" "${OPENCV_VERSION_FILE}"
+                   MAIN_DEPENDENCY "${OPENCV_BUILD_INFO_FILE}"
+                   COMMENT "")
+
+ocv_glob_module_sources(SOURCES ${lib_cuda} ${cuda_objs} "${OPENCV_VERSION_FILE}")
 
 ocv_create_module(${cuda_link_libs})
 ocv_add_precompiled_headers(${the_module})
@@ -24,6 +30,3 @@ ocv_add_precompiled_headers(${the_module})
 ocv_add_accuracy_tests()
 ocv_add_perf_tests()
 
-
-
-

modules/core/include/opencv2/core/core.hpp

@@ -218,6 +218,8 @@ CV_EXPORTS void setNumThreads(int nthreads);
 CV_EXPORTS int getNumThreads();
 CV_EXPORTS int getThreadNum();
 
+CV_EXPORTS_W const std::string& getBuildInformation();
+
 //! Returns the number of ticks.
 
 /*!

modules/core/src/system.cpp

@@ -410,6 +410,14 @@ int getNumberOfCPUs(void)
 #endif
 }
 
+const std::string& getBuildInformation()
+{
+    static std::string build_info =
+#include "version_string.inc"
+    ;
+    return build_info;
+}
+
 string format( const char* fmt, ... )
 {
     char buf[1 << 16];