---- OpenCV-2.1.0/CMakeLists.txt~ 2010-08-13 12:44:23.367365865 +0200
-+++ OpenCV-2.1.0/CMakeLists.txt 2010-08-13 12:47:51.710667315 +0200
-@@ -708,6 +708,8 @@
+--- 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 "")
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(X86 AND NOT MINGW64 AND NOT X86_64 AND NOT APPLE)
+- set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -march=i686")
+- endif()
+-
+ # Other optimizations
+ if(USE_OMIT_FRAME_POINTER)
+ set(EXTRA_C_FLAGS_RELEASE "${EXTRA_C_FLAGS_RELEASE} -fomit-frame-pointer")