从https://github.com/openglredbook/examples 下载了OpenGL编程指南的样例代码,但是运行的时候报错,在build文件夹运行cmake ..
报错如下(运行环境是Mac):
-- Try OpenMP C flag = [-fopenmp=libomp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP C flag = [ ] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP C flag = [-fopenmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP C flag = [/openmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP C flag = [-Qopenmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP C flag = [-openmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP C flag = [-xopenmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP C flag = [+Oopenmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP C flag = [-qsmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP C flag = [-mp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP CXX flag = [-fopenmp=libomp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP CXX flag = [ ] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP CXX flag = [-fopenmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP CXX flag = [/openmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP CXX flag = [-Qopenmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP CXX flag = [-openmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP CXX flag = [-xopenmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP CXX flag = [+Oopenmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP CXX flag = [-qsmp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Try OpenMP CXX flag = [-mp] -- Performing Test OpenMP_FLAG_DETECTED -- Performing Test OpenMP_FLAG_DETECTED - Failed -- Could NOT find OpenMP (missing: OpenMP_C_FLAGS OpenMP_CXX_FLAGS) -- Using Cocoa for window creation -- Using NSGL for context creation -- Building GLFW only for the native architecture -- Configuring done -- Generating done
然后运行make
报错如下:
[ 6%] Built target vermilion [ 15%] Built target glfw [ 16%] Linking CXX executable ../bin/12-imageprocessing ld: library not found for -lGL clang: error: linker command failed with exit code 1 (use -v to see invocation) make[2]: *** [../bin/12-imageprocessing] Error 1 make[1]: *** [CMakeFiles/12-imageprocessing.dir/all] Error 2 make: *** [all] Error 2
在网上搜了好久但是都没有解决,大家知道这是怎么回事吗?
asdasdasd
我去下载了这个例子,在windows下能成功运行。
如图:
cmake 的make过程 选择的是visual2013 官方也说了visual 2013是可以的
使用visual studio 2013 打开项目编译
忽略这些不必要的错误,打开bin文件夹,也可看到有很多可执行文件
打开这些可执行文件
因为你的是mac平台,官网也说了使用cmake Unix makefiles 也是可以成功运行的。你可以和我一样去官网下载一个cmake的gui版,你选择Mac OSX。然后输入正确路径,配置你要用到的generator,因为我要用到visual 2013 于是我选择了visual 2013.你 要根据你自己的情况选择。
然后打开你的generator去make整个项目,最后会在bin目录下生成可执行文件。完成!
问题已解决,CMakeLists.txt 文件26行https://github.com/openglredbook/examples/blob/master/CMakeLists.txt#L26 处,删除GL rt dl
即可make成功。