build error

[robot-mh]

../lib/libplslam.so: undefined reference to zgemm_' ../lib/libplslam.so: undefined reference to zgemv_'
../lib/libplslam.so: undefined reference to zpotrf_' ../lib/libplslam.so: undefined reference to colamd_printf'
../lib/libplslam.so: undefined reference to ztrsv_' ../lib/libplslam.so: undefined reference to amd_free'
../lib/libplslam.so: undefined reference to dsyrk_' ../lib/libplslam.so: undefined reference to dpotrf_'
../lib/libplslam.so: undefined reference to amd_2' ../lib/libplslam.so: undefined reference to dtrsv_'
../lib/libplslam.so: undefined reference to colamd_set_defaults' ../lib/libplslam.so: undefined reference to zherk_'
../lib/libplslam.so: undefined reference to ztrsm_' ../lib/libplslam.so: undefined reference to amd_realloc'
../lib/libplslam.so: undefined reference to dgemv_' ../lib/libplslam.so: undefined reference to dgemm_'
../lib/libplslam.so: undefined reference to SuiteSparse_time' ../lib/libplslam.so: undefined reference to colamd'
../lib/libplslam.so: undefined reference to dtrsm_' ../lib/libplslam.so: undefined reference to amd_malloc'
../lib/libplslam.so: undefined reference to amd_printf' ../lib/libplslam.so: undefined reference to amd_calloc'
../lib/libplslam.so: undefined reference to `colamd_recommended'
collect2: error: ld returned 1 exit status

but these function is in libcholmod.so and libumfpack.so in /usr/lib/x86_64-linux-gnu/ .

so which version of g2o have you used?