c++ - cmake linking error with lapack (undefined symbol: dgeev_) -

i have cmake project linked lti (in .a) linked lapack , try compile it, undefined symobls when running ldd -r on resulting .so:

undefined symbol: dgeev_    (/home/sup-ubuntu/.sup_plugins/libsupprocessparametrablef2ftrackingplugin.so) undefined symbol: sgeev_    (/home/sup-ubuntu/.sup_plugins/libsupprocessparametrablef2ftrackingplugin.so) 

i have checked installed liblapack-dev (my system ubuntu 12.04 64 bits) , libblas-dev. have tried several methods in cmake, none of worked :

set(cmake_cxx_flags "${cmake_cxx_flags} -llapack -lblas" ) 

or

find_package( lapack required ) 

it seems that:

sup-ubuntu@sup-ubuntu12:/usr/lib$ nm liblapack.so | grep sgeev_ nm: liblapack.so: no symbols 

and

sup-ubuntu@sup-ubuntu12:/usr/lib$ nm liblapack.a | grep sgeev_ 0000000000000000 t sgeev_ 

so mean should link statically liblapack.a? how can cmake?

i appreciate or ideas, have looked answers nothing find helped...

sonia