Re: [PATCH v3] build: drop dependency on libbsd

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

On Mon, Jun 29, 2026 at 03:29:20PM +0100, Bruce Richardson 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>
> ---
> v3:
> * removed additional references to libbsd in scripts and docs
> * corrected detection of strlcpy by adding _GNU_SOURCE to detection
>   check, which matches DPDK build.
> * added extra macro check in fallback header, to handle case where
>   strlcpy is available for DPDK build, but not for app builds, e.g.
>   where strict c11 compliance is required.
> 
> v2:
> * Took the work further than v1, dropping libbsd dependency entirely.
>   Now DPDK just supports native strlcpy or it's own fallback version.
> ---
>  .github/workflows/build.yml       |  2 --
>  app/test/test_string_fns.c        |  4 ++--
>  buildtools/pkg-config/meson.build |  3 +--
>  config/meson.build                |  7 +++----
>  devtools/process-iwyu.py          | 10 +++++-----
>  doc/guides/howto/af_xdp_dp.rst    |  1 -
>  lib/eal/include/rte_string_fns.h  | 22 ++++++----------------
>  lib/eal/meson.build               |  4 +---
>  lib/telemetry/telemetry.c         |  2 --
>  lib/telemetry/telemetry_data.c    |  1 -
>  lib/telemetry/telemetry_legacy.c  |  2 --
>  11 files changed, 18 insertions(+), 40 deletions(-)
> 
Ping for review or comments on this change!