Re: [PATCH v2] build: drop dependency on libbsd

[Bruce Richardson <bruce.richardson@intel.com>]

On Mon, Jun 29, 2026 at 01:30:32PM +0200, David Marchand wrote:
> On Thu, 25 Jun 2026 at 15:08, Bruce Richardson
> <bruce.richardson@intel.com> wrote:
> >
> > Glibc added the strlcpy and strlcat functions to version 2.38, released
> > in 2023, meaning they are natively available in modern linux distros. At
> > this point, the value of having the libbsd provided versions of these
> > functions is reduced, so let's simplify the code options here by
> > providing just two options for strlcpy rather than three:
> >
> > 1. native implementation for BSD and recent Linux
> > 2. DPDK-specific fallbacks using snprintf
> >
> > Since the strlcpy and strlcat functions are the only two items used from
> > libbsd, we can then drop completely any DPDK dependency on libbsd.
> >
> > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> >
> > ---
> > V2:
> > * took the work further than v1, dropping libbsd dependency entirely.
> >   Now DPDK just supports native strlcpy or it's own fallback version.
> 
> We still have some references:
> 
> $ git grep -i libbsd
> .github/workflows/build.yml:        libbsd-dev \
> .github/workflows/build.yml:        libbsd-devel \
> devtools/process-iwyu.py:def uses_libbsd(builddir):
> devtools/process-iwyu.py:    "return whether the build uses libbsd or not"
> devtools/process-iwyu.py:    return bool(get_build_config(builddir,
> lambda ln: 'RTE_USE_LIBBSD' in ln))
> devtools/process-iwyu.py:    keep_str_fns = uses_libbsd(build_dir)  #
> check for libbsd
> devtools/process-iwyu.py:        print("Warning: libbsd is present,
> build will fail to detect incorrect removal of rte_string_fns.h",
> doc/guides/howto/af_xdp_dp.rst:          libbsd-devel \
> 

Sure, will respin and try and clean these up a bit. I assume from the
detailed feedback that there is no issue with the high-level approach here?

/Bruce