关于网友提出的“为什么我在linux系统PC端编译OpenCV，用的是cmake-gui，make到这个地方的时候就总是报错过不去”问题疑问，本网通过在网上对“为什么我在linux系统PC端编译OpenCV，用的是cmake-gui，make到这个地方的时候就总是报错过不去”有关的相关答案进行了整理，供用户进行参考，详细问题解答如下：
问题：为什么我在linux系统PC端编译OpenCV，用的是cmake-gui，make到这个地方的时候就总是报错过不去
描述:
本帖最后由 CLinuxF 于 2016-03-22 12:33:27 编辑
cmakeopencv linuxQt嵌入式
[ 30%] Building CXX object modules/highgui/CMakeFiles/opencv_highgui.dir/src/window_QT.o
/home/fl/tool/OpenCV-2.3.1/modules/highgui/src/window_QT.cpp: In function ‘CvFont cvFontQt(const char*, int, CvScalar, int, int, int)’:
/home/fl/tool/OpenCV-2.3.1/modules/highgui/src/window_QT.cpp:88:80: warning: narrowing conversion of ‘spacing’ from ‘int’ to ‘float’ inside { } is ill-formed in C++11 [-Wnarrowing]
Font f = {nameFont,color,style,NULL,NULL,NULL,0,0,0,weight,spacing,pointSize};
^
/home/fl/tool/OpenCV-2.3.1/modules/highgui/src/window_QT.cpp: In function ‘int cvWaitKey(int)’:
/home/fl/tool/OpenCV-2.3.1/modules/highgui/src/window_QT.cpp:316:16: error: ‘usleep’ was not declared in this scope
usleep(1000);
^
modules/highgui/CMakeFiles/opencv_highgui.dir/build.make:238: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui.dir/src/window_QT.o' failed
make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/src/window_QT.o] Error 1
CMakeFiles/Makefile2:598: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui.dir/all' failed
make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2
Makefile:116: recipe for target 'all' failed
make: *** [all] Error 2
解决方案1:
#include
以上介绍了“为什么我在linux系统PC端编译OpenCV，用的是cmake-gui，make到这个地方的时候就总是报错过不去”的问题解答，希望对有需要的网友有所帮助。
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