MinGW >> OpenCV
解決"x86_64-w64-mingw32-gcc: error: unrecognized command line option -rdynamic"問題
參考資訊：
1. suppressing-rdynamic
問題：
Run Build Command(s):/usr/bin/make cmTC_b9db5/fast && /usr/bin/make -f CMakeFiles/cmTC_b9db5.dir/build.make CMakeFiles/cmTC_b9db5.dir/build
make[1]: Entering directory 'sample/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_b9db5.dir/testCCompiler.c.o
/usr/bin/x86_64-w64-mingw32-gcc -o CMakeFiles/cmTC_b9db5.dir/testCCompiler.c.o -c sample/build/CMakeFiles/CMakeTmp/testCCompiler.c
Linking C executable cmTC_b9db5
/usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_b9db5.dir/link.txt --verbose=1
/usr/bin/x86_64-w64-mingw32-gcc -rdynamic CMakeFiles/cmTC_b9db5.dir/testCCompiler.c.o -o cmTC_b9db5
x86_64-w64-mingw32-gcc: error: unrecognized command line option ‘-rdynamic’
CMakeFiles/cmTC_b9db5.dir/build.make:106: recipe for target 'cmTC_b9db5' failed
make[1]: *** [cmTC_b9db5] Error 1
make[1]: Leaving directory 'sample/build/CMakeFiles/CMakeTmp'
Makefile:141: recipe for target 'cmTC_b9db5/fast' failed
make: *** [cmTC_b9db5/fast] Error 2
解法：
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")