编译时老是报error: 'unsupported/Eigen/NonLinearOptimization' file not found

[sdjkxhb2016]

已经安装了Eigen ,并且在/usr/include/eigen3目录下执行了
sudo cp Eigen/ .. -R
sudo cp unsupported/ .. -R

在KDevelop 中也可以引用到 ,但还是报这个错,详情是:

In file included from /home/xhb/.conan/data/pcl/1.9.1/bashbug/stable/build/1dbc8a6a865a8fad699417711b0b0b490d4d2d18/pcl/sample_consensus/src/sac_model_circle.cpp:39:
In file included from /home/xhb/.conan/data/pcl/1.9.1/bashbug/stable/build/1dbc8a6a865a8fad699417711b0b0b490d4d2d18/pcl/sample_consensus/include/pcl/sample_consensus/impl/sac_model_circle.hpp:44:
/home/xhb/.conan/data/pcl/1.9.1/bashbug/stable/build/1dbc8a6a865a8fad699417711b0b0b490d4d2d18/pcl/sample_consensus/include/pcl/sample_consensus/eigen.h:48:10: fatal error: 'unsupported/Eigen/NonLinearOptimization' file not found
#include <unsupported/Eigen/NonLinearOptimization>
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
sample_consensus/CMakeFiles/pcl_sample_consensus.dir/build.make:86: recipe for target 'sample_consensus/CMakeFiles/pcl_sample_consensus.dir/src/sac_model_circle.cpp.o' failed
make[2]: *** [sample_consensus/CMakeFiles/pcl_sample_consensus.dir/src/sac_model_circle.cpp.o] Error 1
CMakeFiles/Makefile2:339: recipe for target 'sample_consensus/CMakeFiles/pcl_sample_consensus.dir/all' failed
make[1]: *** [sample_consensus/CMakeFiles/pcl_sample_consensus.dir/all] Error 2
make[1]: *** 正在等待未完成的任务....