随意记录的一些漫不经心的bug

1. 找不到库？

make[2]: *** No rule to make target '/usr/lib/x86_64-linux-gnu/libIlmImf.so', needed by '../lib/libORB_SLAM2.so'. Stop.
CMakeFiles/Makefile2:178: recipe for target 'CMakeFiles/ORB_SLAM2.dir/all' failed

搜：apt-cache search IlmImf

装：sudo apt-get install libopenexr-dev 

解决。（感谢江建文师弟提示）