相关疑难解决方法(0)

我已使用https://help.ubuntu.com/community/OpenCV中的说明安装了OpenCV

$ sudo su
$ sudo apt-get install build-essential
$ sudo apt-get install libavformat-dev
$ sudo apt-get install ffmpeg
$ sudo apt-get install libcv2.3 libcvaux2.3 libhighgui2.3 python-opencv opencv-doc libcv-dev libcvaux-dev libhighgui-dev

现在,当我执行"pkg-config --cflags --libs opencv"时,我收到此错误:

Package opencv was not found in the pkg-config search path.
Perhaps you should add the directory containing `opencv.pc'
to the PKG_CONFIG_PATH environment variable
No package 'opencv' found

我该如何解决这个问题？

------- -------更新

好的,我想出了如何解决问题......

我创建了一个名为"opencv.pc"的文件并将其复制到"/ usr/local/lib/pkgconfig"然后我将这两行添加到".bashrc":

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH

而已!现在一切都好.

该文件的内容是:

prefix=/usr
exec_prefix=${prefix}
includedir=${prefix}/include
libdir=${exec_prefix}/lib

Name: …

我试图从命令行运行以下dot命令:

dot -v ~/Documents/FlowGraph/dot_sample_1_full.dot -Tpng 'Documents/FlowGraph/sampleOutput.png' -Ksfdp -Goverlap=false

但这个输出失败了:

dot - graphviz version 2.36.0 (20140111.2315)
Using render: cairo:cairo
Using device: png:cairo:cairo
libdir = "/usr/local/lib/graphviz"
Activated plugin library: libgvplugin_neato_layout.6.dylib
Using layout: sfdp:neato_layout
The plugin configuration file:
    /usr/local/lib/graphviz/config6
        was successfully loaded.
    render  :  cairo dot fig map pic pov ps quartz svg tk vml xdot
    layout  :  circo dot fdp neato nop nop1 nop2 osage patchwork sfdp twopi
    textlayout  :  textlayout
    device  :  bmp canon cgimage cmap cmapx cmapx_np dot eps exr …