Dan Nelson wrote:
In the last episode (Feb 28), Kathy Quinlan said:
I have this:
#include <machine/clock.h>
In program I use this:
DELAY(1000);
I get this:
undefined referance to 'DELAY'
when I compile the program with GCC with flags -Wall -g -o com main.c
DELAY is a kernel function. In user processes, just use sleep() or nanosleep(). When you directly #include <machine/*> headers from userland, the only useable things are structure definitions and macro constants (and even then it's recommended that you use a userland interface instead). You can't call any of the functions.
Thanks, using sleep now, only need a second :)
Slowly learning programming in a real enviroment whene we do not have microsloth program to hold our hands (never had a VC++ ap able to do anything to a system, this program has already core dumped a few times)
Regards,
Kat.
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