gesagt getan hier kommen die zeilen was er mir nach deinem vorgang sagt:

gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/hdlc.o hdlc.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/pocsag.o pocsag.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/translate.o translate.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_afsk12.o demod_afsk12.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_afsk24.o demod_afsk24.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_afsk24_2.o demod_afsk24_2.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_hapn48.o demod_hapn48.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_fsk96.o demod_fsk96.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/fms.o fms.c
fms.c:25: warning: built-in function ‘fmin’ declared as non-function
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_poc5.o demod_poc5.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_poc12.o demod_poc12.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_poc24.o demod_poc24.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_fms.o demod_fms.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_dtmf.o demod_dtmf.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/demod_zvei.o demod_zvei.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/unixinout.o unixinout.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/monitor_rou.o monitor_rou.c
gcc -Wstrict-prototypes -I/usr/X11R6/include -O3 -march=i486 -DARCH_I386 -c -o bin-i686/mkcostab.o mkcostab.c
mkcostab.c: In function ‘main’:
mkcostab.c:43: warning: incompatible implicit declaration of built-in function ‘exit’
gcc bin-i686/mkcostab.o -lm -lncurses -lX11 -L/usr/X11R6/lib -o bin-i686/mkcostab
/usr/lib/gcc/i586-suse-linux/4.3/../../../../i586-suse-linux/bin/ld: cannot find -lX11
collect2: ld returned 1 exit status