> In an effort to chase down a libc_r bug, I compiled libc_r with CFLAGS=-g
> (and later CFLAGS=-g3), but ran into linker problems as a result.
>
> blitz:~> gcc poll.c -pthread
> /usr/lib/libc_r.so: undefined reference to `__sigisempty'
>
> Even the simplest of C programs will get this linker error if using the
> -pthread option.
>
> So, __sigisempty is an inline function, defined in
> /usr/include/sys/signalvar.h:
>
> extern __inline int
> __sigisempty(sigset_t *set)
> {
> int i;
>
> for (i = 0; i < _SIG_WORDS; i++) {
> if (set->__bits[i])
> return (0);
> }
> return (1);
> }
>
It doesn't make much sense to have an "extern" inline function, gcc probably
was confused by this, change "extern" to "static" and try again.
-lq
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