解决cmake编译找不到二进制文件

这两天在用cmake编译openpose时遇到了找不到二进制文件的问题，cmake报错如下：

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
GFLAGS_LIBRARY_DEBUG
    linked by target "openpose" in directory C:/code/source_code/openpose-1.5.0/src/openpose
GFLAGS_LIBRARY_RELEASE
    linked by target "openpose" in directory C:/code/source_code/openpose-1.5.0/src/openpose
GLOG_LIBRARY_DEBUG
    linked by target "openpose" in directory C:/code/source_code/openpose-1.5.0/src/openpose
GLOG_LIBRARY_RELEASE
    linked by target "openpose" in directory C:/code/source_code/openpose-1.5.0/src/openpose

    还有cmake和opencv开头的错误，当时没有截，在使用cmake编译openpose时，cmake会自动下载三个压缩包：caffe_16_2020_11_14；caffe3rdparty_16_2020_11_14；opencv_450_v15_2020_11_18；（版本可能不同），由于cmake下载看不到进度，所以我使用了IDM下载，再放入指定的文件夹中，但是cmake无法识别，尝试了网上很多方法都没有用，偶然中发现如果是使用cmake下载的话就不会出现错误了。也看到别人有使用迅雷下载的，但是保险起见还是使用cmake吧。虽然是编译openpose时遇到的问题，大概其他的项目也可以参考。