I have done some editing to sql/item_cmpfunc.cc file and CMakeList files and then when I run the make command( after running cmake) it halts with this error in the middle. ([68%])

Linking CXX executable explain_filename-t
/usr/bin/ld.bfd.real: cannot find -lregex
collect2: error: ld returned 1 exit status
make[2]: *** [unittest/mysys/explain_filename-t] Error 1
make[1]: *** [unittest/mysys/CMakeFiles/explain_filename-t.dir/all] Error 2
make: *** [all] Error 2