Ubuntu18.04下编译orbslam3报错

[DAVE-WS924]

运行./build.shj出现报错,有realsense库也链接了，删除build重新编译，但还是报错。
CMakeFiles/mono_inertial_realsense_D435i_old.dir/Examples_old/Monocular-Inertial/mono_inertial_realsense_D435i.cc.o：在函数‘rs2::context::context(char const*)’中：
mono_inertial_realsense_D435i.cc:(.text._ZN3rs27contextC2EPKc[_ZN3rs27contextC5EPKc]+0x3b)：对‘rs2_create_context_ex’未定义的引用
collect2: error: ld returned 1 exit status
CMakeFiles/mono_inertial_realsense_D435i_old.dir/build.make:168: recipe for target '../Examples_old/Monocular-Inertial/mono_inertial_realsense_D435i_old' failed
make[2]: *** [../Examples_old/Monocular-Inertial/mono_inertial_realsense_D435i_old] Error 1
CMakeFiles/Makefile2:104: recipe for target 'CMakeFiles/mono_inertial_realsense_D435i_old.dir/all' failed
make[1]: *** [CMakeFiles/mono_inertial_realsense_D435i_old.dir/all] Error 2
make[1]: *** 正在等待未完成的任务....
CMakeFiles/mono_realsense_t265_old.dir/Examples_old/Monocular/mono_realsense_t265.cc.o：在函数‘rs2::context::context(char const*)’中：
mono_realsense_t265.cc:(.text._ZN3rs27contextC2EPKc[_ZN3rs27contextC5EPKc]+0x4a)：对‘rs2_create_context_ex’未定义的引用
collect2: error: ld returned 1 exit status
CMakeFiles/mono_realsense_t265_old.dir/build.make:168: recipe for target '../Examples_old/Monocular/mono_realsense_t265_old' failed
make[2]: *** [../Examples_old/Monocular/mono_realsense_t265_old] Error 1
CMakeFiles/Makefile2:141: recipe for target 'CMakeFiles/mono_realsense_t265_old.dir/all' failed
make[1]: *** [CMakeFiles/mono_realsense_t265_old.dir/all] Error 2
CMakeFiles/stereo_inertial_realsense_t265_old.dir/Examples_old/Stereo-Inertial/stereo_inertial_realsense_t265.cc.o：在函数‘rs2::context::context(char const*)’中：
stereo_inertial_realsense_t265.cc:(.text._ZN3rs27contextC2EPKc[_ZN3rs27contextC5EPKc]+0x3b)：对‘rs2_create_context_ex’未定义的引用
collect2: error: ld returned 1 exit status
CMakeFiles/stereo_inertial_realsense_t265_old.dir/build.make:168: recipe for target '../Examples_old/Stereo-Inertial/stereo_inertial_realsense_t265_old' failed
make[2]: *** [../Examples_old/Stereo-Inertial/stereo_inertial_realsense_t265_old] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/stereo_inertial_realsense_t265_old.dir/all' failed
make[1]: *** [CMakeFiles/stereo_inertial_realsense_t265_old.dir/all] Error 2
CMakeFiles/mono_realsense_D435i_old.dir/Examples_old/Monocular/mono_realsense_D435i.cc.o：在函数‘rs2::context::context(char const*)’中：
mono_realsense_D435i.cc:(.text._ZN3rs27contextC2EPKc[_ZN3rs27contextC5EPKc]+0x3b)：对‘rs2_create_context_ex’未定义的引用
collect2: error: ld returned 1 exit status
CMakeFiles/mono_realsense_D435i_old.dir/build.make:168: recipe for target '../Examples_old/Monocular/mono_realsense_D435i_old' failed
make[2]: *** [../Examples_old/Monocular/mono_realsense_D435i_old] Error 1
CMakeFiles/Makefile2:178: recipe for target 'CMakeFiles/mono_realsense_D435i_old.dir/all' failed
make[1]: *** [CMakeFiles/mono_realsense_D435i_old.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2