---- OpenCV-2.3.1/CMakeLists.txt.orig 2011-09-20 11:49:54.179110367 +0200
-+++ OpenCV-2.3.1/CMakeLists.txt 2011-09-20 11:50:58.153269555 +0200
-@@ -1135,6 +1135,8 @@
- set(EXTRA_EXE_LINKER_FLAGS_RELEASE "")
- set(EXTRA_EXE_LINKER_FLAGS_DEBUG "")
+--- opencv-2.4.11/cmake/OpenCVCompilerOptions.cmake~ 2015-05-19 11:39:16.000000000 +0300
++++ opencv-2.4.11/cmake/OpenCVCompilerOptions.cmake 2015-05-19 11:47:57.851517663 +0300
+@@ -47,6 +47,8 @@
+ endif()
+ endmacro()
-+set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -D__STDC_CONSTANT_MACROS")
++add_extra_compiler_option(-D__STDC_CONSTANT_MACROS)
+
- if(MSVC)
- set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS")
- # 64-bit portability warnings, in MSVC8
-@@ -1174,10 +1176,6 @@
- set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -Werror")
- endif()
+ if(MINGW)
+ # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40838
+ # here we are trying to workaround the problem
+@@ -110,10 +110,6 @@
+ add_extra_compiler_option(-Werror)
+ endif()
-- if(X86 AND NOT MINGW64 AND NOT X86_64 AND NOT APPLE)
-- set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -march=i686")
-- endif()
+- if(X86 AND NOT MINGW64 AND NOT X86_64 AND NOT APPLE)
+- add_extra_compiler_option(-march=i686)
+- endif()
-
- # Other optimizations
- if(USE_OMIT_FRAME_POINTER)
- set(EXTRA_C_FLAGS_RELEASE "${EXTRA_C_FLAGS_RELEASE} -fomit-frame-pointer")
+ if(APPLE)
+ add_extra_compiler_option(-Wno-semicolon-before-method-body)
+ endif()