i am getting the error while make
/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld: cannot find -lpq
collect2: error: ld returned 1 exit status
make[2]: *** [osm2pgrouting] Error 1
make[1]: *** [CMakeFiles/osm2pgrouting.dir/all] Error 2
make: *** [all] Error 2
What i need to change?