wizard00 <[EMAIL PROTECTED]> writes: > gcc try.c -o try would give me linking problem > > /tmp/ccQOkXtu.o: In function `serial_echo_print': > try.c:(.text+0x31e): undefined reference to `__inb' > try.c:(.text+0x34a): undefined reference to `__outb' > try.c:(.text+0x360): undefined reference to `__inb' > try.c:(.text+0x387): undefined reference to `__outb' > collect2: ld returned 1 exit status > > but gcc -Os try.c -o try would be OK /w no error > > what's this -Os option? I thought it's only for optimization. > from upper error it seems as if missing library. I wouldn't make the > connection between > them.
This message is appropriate for [EMAIL PROTECTED], not for [EMAIL PROTECTED] Please direct any followups to gcc-help (only). Thanks. Most likely the functions are defined in a header file. When using -Os they are inlined. When not using optimization they are not inlined, and must be found in some library. Ian
