kleiner tipp?

[demerzel]

hier ist mal das programm


und die fehlermeldung:

-------- begin --------
avr-gcc (GCC) 3.3.1
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


Compiling: dcf_demo.c
avr-gcc -c -mmcu=atmega8 -I. -gstabs -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=dcf_demo.lst -std=gnu99 -Wp,-M,-MP,-MT,dcf_demo.o,-MF,.dep/dcf_demo.o.d dcf_demo.c -o dcf_demo.o

Linking: dcf_demo.elf
avr-gcc -mmcu=atmega8 -I. -gstabs -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=dcf_demo.o -std=gnu99 -Wp,-M,-MP,-MT,dcf_demo.o,-MF,.dep/dcf_demo.elf.d dcf_demo.o --output dcf_demo.elf -Wl,-Map=dcf_demo.map,--cref -lm
dcf_demo.o(.text+0x2c): In function `__vector_9':
dcf_demo.c:21: undefined reference to `dcf77_timetick'
dcf_demo.o(.text+0x8: In function `main':
dcf_demo.c:49: undefined reference to `init_ds1302'
dcf_demo.o(.text+0x8a):dcf_demo.c:50: undefined reference to `dcf77_init'
dcf_demo.o(.text+0x8c):dcf_demo.c:51: undefined reference to `lcd_init'
dcf_demo.o(.text+0x9c):dcf_demo.c:57: undefined reference to `read_time_ds1302'
dcf_demo.o(.text+0x9e):dcf_demo.c:59: undefined reference to `lcd_clear'
dcf_demo.o(.text+0xa2):dcf_demo.c:60: undefined reference to `lcd_mode'
dcf_demo.o(.text+0xa:dcf_demo.c:69: undefined reference to `dcf77_update'
dcf_demo.o(.text+0xb0):dcf_demo.c:71: undefined reference to `dcf77_update'
dcf_demo.o(.text+0xb2):dcf_demo.c:72: undefined reference to `dcf77_process_data'
dcf_demo.o(.text+0xb6):dcf_demo.c:75: undefined reference to `update_time'
dcf_demo.o(.text+0xbe):dcf_demo.c:77: undefined reference to `update_time'
dcf_demo.o(.text+0xc2):dcf_demo.c:78: undefined reference to `dcf77_tick'
dcf_demo.o(.text+0xc6):dcf_demo.c:78: undefined reference to `dcf77_tick'
dcf_demo.o(.text+0x104):dcf_demo.c:87: undefined reference to `write_time_ds1302'
dcf_demo.o(.text+0x10:dcf_demo.c:90: undefined reference to `inc_time'
dcf_demo.o(.text+0x110):dcf_demo.c:92: undefined reference to `inc_time'
dcf_demo.o(.text+0x116):dcf_demo.c:93: undefined reference to `increment_time'
dcf_demo.o(.text+0x11e):dcf_demo.c:94: undefined reference to `display_date'
make: *** [dcf_demo.elf] Error 1

> Process Exit Code: 2



und nu? wie weiter?
ciao peter