Can´t run Make

[Henriquegravina]

I am tring to run make, but it returns errors: Starting build... Linking: images/MicroDigi.elf hardware/AFSK.o: In function afsk_putchar': /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:98: undefined reference to fifo_isfull_locked' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:99: undefined reference to fifo_push_locked' hardware/AFSK.o: In function afsk_getchar': /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:102: undefined reference to fifo_isempty_locked' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:102: undefined reference to fifo_pop_locked' hardware/AFSK.o: In function AFSK_init': /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:58: undefined reference to fifo_push' hardware/AFSK.o: In function AFSK_dac_isr': /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:118: undefined reference to fifo_pop' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:118: undefined reference to fifo_pop' hardware/AFSK.o: In function AFSK_adc_isr': /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:325: undefined reference to fifo_pop' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:325: undefined reference to fifo_push' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:325: undefined reference to fifo_isfull' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:325: undefined reference to fifo_push' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:325: undefined reference to fifo_isfull' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:325: undefined reference to fifo_isfull' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:325: undefined reference to fifo_push' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:325: undefined reference to fifo_isfull' /home/henrique/stuffs/MicroDigi/hardware/AFSK.c:325: undefined reference to fifo_push' protocol/AX25.o: In function ax25_putchar': /home/henrique/stuffs/MicroDigi/protocol/AX25.c:70: undefined reference to update_crc_ccit' protocol/AX25.o: In function ax25_poll': /home/henrique/stuffs/MicroDigi/protocol/AX25.c:65: undefined reference to update_crc_ccit' protocol/Digipeater.o: In function is_duplicate': /home/henrique/stuffs/MicroDigi/protocol/Digipeater.c:267: undefined reference to timer_clock' protocol/Digipeater.o: In function digipeater_csma': /home/henrique/stuffs/MicroDigi/protocol/Digipeater.c:287: undefined reference to timer_clock' /home/henrique/stuffs/MicroDigi/protocol/Digipeater.c:287: undefined reference to timer_clock' protocol/Digipeater.o: In function digipeater_processPackets': /home/henrique/stuffs/MicroDigi/protocol/Digipeater.c:63: undefined reference to update_crc_ccit' /home/henrique/stuffs/MicroDigi/protocol/Digipeater.c:144: undefined reference to update_crc_ccit' /home/henrique/stuffs/MicroDigi/protocol/Digipeater.c:196: undefined reference to timer_clock' /home/henrique/stuffs/MicroDigi/protocol/Digipeater.c:135: undefined reference to `update_crc_ccit' collect2: erro: ld returned 1 exit status make: *** [Makefile:308: images/MicroDigi.elf] Erro 1