Re: Documentation oddity.

[Duncan Roe <duncan_roe@optusnet.com.au>]

Hi Ged,

On Mon, Mar 10, 2025 at 06:00:40PM +0000, G.W. Haywood wrote:
> Hi there,
>
> Another one for you.
>
> In the docs at
>
> https://www.netfilter.org/projects/libnetfilter_queue/doxygen/html/
>
> there is given a command to compile the sample code in nf-queue.c.
>
> The command given is
>
> gcc -g3 -ggdb -Wall -lmnl -lnetfilter_queue -o nf-queue nf-queue.c
>
> Here, and I suspect almost everywhere else, that doesn't work.

Works here with gcc versions 11.2.0 and 14.2.0.
>
> Should the command not be something more like the one below?
>
> gcc -o nf-queue nf-queue.c -g3 -ggdb -Wall -lmnl -lnetfilter_queue

gcc doesn't care, but the conventional order for command arguments is option
args first, as in the docs.
>
The -ggdb argument is obsolete and may be slated for removal. Can you please try
this:

gcc -g3 -gdwarf-4 -Wall -lmnl -lnetfilter_queue -o nf-queue nf-queue.c

If it still fails for you, please let me know at least 2 things:

1. What is the error message

2. The first line output bu the command "gcc --version"

Cheers ... Duncan.