解决g2o不慎make install问题 - mowtian/Projektarbeit GitHub Wiki
$ sudo rm -r /usr/local/lib/libg2o* /usr/local/include/g2o /usr/local/lib/g2o /usr/local/bin/g2o*
$ sudo rm -r /usr/local/lib/libg2o* /usr/local/include/g2o /usr/local/lib/g2o /usr/local/bin/g2o*