🚀 go-pugleaf

Matt Stainforth <mbs@paladine.moncton.nbcc.nb.ca> writes:

|> Does anyone know why this is happening?
|> # gcc -c ping.c -o ping.o
|> # gcc ping.o -o ping -L../lib -linet6 -lresolv
|> ping.o: In function `main':
|> ping.o(.text+0x7c0): undefined reference to `clear_bit'
|> ping.o(.text+0x7d1): undefined reference to `clear_bit'
|> ping.o(.text+0x7e2): undefined reference to `clear_bit'
|> ping.o(.text+0x7f3): undefined reference to `clear_bit'
|> ping.o(.text+0x807): undefined reference to `clear_bit'

|> This is clear_bit which is defined in <asm/bitops.h>, which is included:

|> extern __inline__ int clear_bit(int nr,   void * addr)
|> {
|>         int oldbit;

|>         __asm__ __volatile__(""
|>                 "btrl %2,%1\n\tsbbl %0,%0"
|>                 :"=r" (oldbit),"=m" ((*(struct __dummy *) addr) )
|>                 :"ir" (nr));
|>         return oldbit;
|> }

You are not optimizing, so inlining is not performed.  Because clear_bit
is declared extern, no non-inline version is generated either.  So either
enable the optimizer or provide a non-inline definition of clear_bit (for
example, by changing extern to static).
-- 
Andreas Schwab                                      "And now for something
schwab@issan.informatik.uni-dortmund.de              completely different"