On Sun, Jul 5, 2020 at 4:00 PM Bruno Haible via cfarm-users <
cfarm-users@lists.tetaneutral.net> wrote:
> Jeffrey,
>
> > b2sum-src/b2sum.c:266:26: error: array type has incomplete element
> > type 'struct option'
> > static struct option long_options[] = {
> > ^~~~~~~~~~~~
>
> When you use 'struct option', you need to
>
> 1) use Gnulib module 'getopt-gnu' - see the documentation
> https://www.gnu.org/software/gnulib/manual/html_node/getopt.html
>
> https://www.gnu.org/software/gnulib/manual/html_node/getopt_002eh.html
>
> https://www.gnu.org/software/gnulib/manual/html_node/getopt_005flong.html
>
> 2) #include <getopt.h>, not <unistd.h> - see the documentation
> https://www.gnu.org/software/gnulib/MODULES.html#module=getopt-gnu
>
> Bruno
>
And getopt(3) with long options is a GNU extension implemented by glibc,
some
other libc also provides similar interfaces (such as FreeBSD with
getopt_long).
However it seems that AIX does not have a similar interface so the best
option
is indeed to use gnulib.
--
"Tradition is not the worship of ashes, but the preservation of fire."
- Gustav Mahler
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