ios - Undefined symbols for architecture x86_64 with C files -


i have .c , .h file has added in swift project. have created bridging header , included .h file. i'm getting apple mach-o linker error follows: 

undefined symbols architecture x86_64:   "_smooth", referenced from:       __rep_count_data_passing_2 in rep.o   "_tot_samples_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_oldavg_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_newavg_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_newmin_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_count_idle_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_rep_count_var", referenced from:       __rep_count_data_passing_2 in rep.o   "_step_cal_incre_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_avgthresh_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_avg_rssdat_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_newmax_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_minavg_rep", referenced from:       __rep_count_data_passing_2 in rep.o       _isstep_rep in rep.o   "_maxavg_rep", referenced from:       __rep_count_data_passing_2 in rep.o       _isstep_rep in rep.o   "_accel_dat_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_stepflag_rep", referenced from:       _isstep_rep in rep.o   "_i", referenced from:       __rep_count_data_passing_2 in rep.o      (maybe meant: __tivc5ctest11appdelegate6windowgsqcso8uiwindow_i)   "_cycle_count_rep", referenced from:       __rep_count_data_passing_2 in rep.o   "_avglen_rep", referenced from:       __rep_count_data_passing_2 in rep.o ld: symbol(s) not found architecture x86_64 clang: error: linker command failed exit code 1 (use -v see invocation)

what issue , how fix this? thank in advance!


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