cmake: debug info

CMakeLists.txt

@@ -280,7 +280,7 @@ OCV_OPTION(BUILD_EXAMPLES           "Build all examples"
 OCV_OPTION(BUILD_PACKAGE            "Enables 'make package_source' command"       ON  IF NOT WINRT)
 OCV_OPTION(BUILD_PERF_TESTS         "Build performance tests"                     ON  IF (NOT APPLE_FRAMEWORK) )
 OCV_OPTION(BUILD_TESTS              "Build accuracy & regression tests"           ON  IF (NOT APPLE_FRAMEWORK) )
-OCV_OPTION(BUILD_WITH_DEBUG_INFO    "Include debug info into debug libs (not MSVC only)" ON )
+OCV_OPTION(BUILD_WITH_DEBUG_INFO    "Include debug info into release binaries ('OFF' means default settings)" OFF )
 OCV_OPTION(BUILD_WITH_STATIC_CRT    "Enables use of statically linked CRT for statically linked OpenCV" ON IF MSVC )
 OCV_OPTION(BUILD_WITH_DYNAMIC_IPP   "Enables dynamic linking of IPP (only for standalone IPP)" OFF )
 OCV_OPTION(BUILD_FAT_JAVA_LIB       "Create Java wrapper exporting all functions of OpenCV library (requires static build of OpenCV modules)" ANDROID IF NOT BUILD_SHARED_LIBS)

cmake/OpenCVCRTLinkage.cmake

@@ -25,7 +25,7 @@ if(MSVC AND WINRT)
   string(REPLACE "/INCREMENTAL " "/INCREMENTAL:NO " CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
 
   string(REPLACE "/OPT:ICF " "/OPT:NOICF " CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
-  string(REPLACE "/OPT:REF " "/OPT:NORE F" CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
+  string(REPLACE "/OPT:REF " "/OPT:NOREF" CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
   string(REPLACE "/INCREMENTAL:YES " "/INCREMENTAL:NO " CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
   string(REPLACE "/INCREMENTAL " "/INCREMENTAL:NO " CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
 
@@ -83,23 +83,3 @@ if(CMAKE_VERSION VERSION_GREATER "2.8.6")
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP${N} ")
   endif()
 endif()
-
-if(NOT BUILD_WITH_DEBUG_INFO AND NOT MSVC)
-  string(REPLACE "/debug" "" CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
-  string(REPLACE "/DEBUG" "" CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
-  string(REPLACE "/INCREMENTAL:YES" "/INCREMENTAL:NO" CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
-  string(REPLACE "/INCREMENTAL " "/INCREMENTAL:NO " CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
-
-  string(REPLACE "/debug" "" CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
-  string(REPLACE "/DEBUG" "" CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
-  string(REPLACE "/INCREMENTAL:YES" "/INCREMENTAL:NO" CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
-  string(REPLACE "/INCREMENTAL " "/INCREMENTAL:NO " CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG}")
-
-  string(REPLACE "/debug" "" CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}")
-  string(REPLACE "/DEBUG" "" CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}")
-  string(REPLACE "/INCREMENTAL:YES" "/INCREMENTAL:NO" CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}")
-  string(REPLACE "/INCREMENTAL " "/INCREMENTAL:NO " CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}")
-
-  string(REPLACE "/Zi" "" CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}")
-  string(REPLACE "/Zi" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}")
-endif()

cmake/OpenCVCompilerOptions.cmake

@@ -185,8 +185,11 @@ if(CMAKE_COMPILER_IS_GNUCXX)
   set(OPENCV_EXTRA_FLAGS_DEBUG "${OPENCV_EXTRA_FLAGS_DEBUG} -DDEBUG -D_DEBUG")
 
   if(BUILD_WITH_DEBUG_INFO)
-    if(NOT " ${CMAKE_CXX_FLAGS} ${OPENCV_EXTRA_CXX_FLAGS}" MATCHES " -g")
-      set(OPENCV_EXTRA_CXX_FLAGS "${OPENCV_EXTRA_CXX_FLAGS} -g")
+    # https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html
+    # '-g' is equal to '-g2', '-g1' produces minimal information, enough for making backtraces
+    ocv_update(OPENCV_DEBUG_OPTION "-g1")
+    if(NOT " ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE} ${OPENCV_EXTRA_CXX_FLAGS} ${OPENCV_EXTRA_FLAGS_RELEASE}" MATCHES " -g")
+      set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} ${OPENCV_DEBUG_OPTION}")
     endif()
   endif()
 endif()
@@ -198,7 +201,9 @@ if(MSVC)
   #endif()
 
   if(BUILD_WITH_DEBUG_INFO)
+    set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} /Zi")
     set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE} /debug")
+    set(OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE} /debug")
   endif()
 
   # Remove unreferenced functions: function level linking
@@ -206,9 +211,6 @@ if(MSVC)
   if(NOT MSVC_VERSION LESS 1400)
     set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /bigobj")
   endif()
-  if(BUILD_WITH_DEBUG_INFO)
-    set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} /Zi")
-  endif()
 
   if(OPENCV_WARNINGS_ARE_ERRORS)
     set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /WX")
@@ -257,6 +259,9 @@ if(NOT OPENCV_SKIP_EXTRA_COMPILER_FLAGS)
   set(CMAKE_EXE_LINKER_FLAGS         "${CMAKE_EXE_LINKER_FLAGS} ${OPENCV_EXTRA_EXE_LINKER_FLAGS}")
   set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} ${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE}")
   set(CMAKE_EXE_LINKER_FLAGS_DEBUG   "${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG}")
+  set(CMAKE_SHARED_LINKER_FLAGS         "${CMAKE_SHARED_LINKER_FLAGS} ${OPENCV_EXTRA_SHARED_LINKER_FLAGS}")
+  set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} ${OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE}")
+  set(CMAKE_SHARED_LINKER_FLAGS_DEBUG   "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} ${OPENCV_EXTRA_SHARED_LINKER_FLAGS_DEBUG}")
 endif()
 
 if(MSVC)