在raspberry pi 3上构建opencv时出错

我在运行

make

In file included from /root/src/opencv-3.1.0/modules/videoio/src/cap_ffmpeg.cpp:45:0:
/root/src/opencv-3.1.0/modules/videoio/src/cap_ffmpeg_impl.hpp: In member function ‘bool OutputMediaStream_FFMPEG::open(const char*, int, int, double)’:
/root/src/opencv-3.1.0/modules/videoio/src/cap_ffmpeg_impl.hpp:2207:41: warning: ignoring return value of ‘int avformat_write_header(AVFormatContext*, AVDictionary**)’, declared with attribute warn_unused_result [-Wunused-result]
         avformat_write_header(oc_, NULL);
                                         ^
Linking CXX shared library ../../lib/libopencv_videoio.so
/usr/bin/ld: /usr/local/lib/libx264.a(common.o): relocation R_ARM_MOVW_ABS_NC against `a local symbol' can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/libx264.a: error adding symbols: Bad value
collect2: error: ld returned 1 exit status
modules/videoio/CMakeFiles/opencv_videoio.dir/build.make:215: recipe for target 'lib/libopencv_videoio.so.3.1.0' failed
make[2]: *** [lib/libopencv_videoio.so.3.1.0] Error 1
CMakeFiles/Makefile2:4058: recipe for target 'modules/videoio/CMakeFiles/opencv_videoio.dir/all' failed
make[1]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2
Makefile:147: recipe for target 'all' failed
make: *** [all] Error 2

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我已经按照链接中的步骤成功地在Raspberry Pi 3上安装了opencv

我在执行以下步骤时所做的更改是：

使用“资质”而不是“apt get”，并接受给出的所有建议

在执行步骤11之前，请运行“source~/.profile”。要退出，请运行“停用”

希望这有帮助：）