[Buildroot] [PATCH 2/4] package/libbpf: remove architecture restrictions
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Wed Oct 26 20:10:28 UTC 2022
Hello Tobias,
On Thu, 20 Oct 2022 16:14:10 +0200
Tobias Waldekranz <tobias at waldekranz.com> wrote:
> Since 3145adfb69ba, libbpf depends on Linux headers >= 4.13. This
> requirement renders the explicit list of supported architectures,
> previously added in f693354c30bd overly restrictive, as the syscall
> number for bpf(2) has been defined since Linux 3.18.
>
> f693354c30bd was introduced to fix a build issue where a toolchain
> using very old kernel headers (3.13) failed to build libbpf for ARM.
>
> Signed-off-by: Tobias Waldekranz <tobias at waldekranz.com>
> ---
> package/libbpf/Config.in | 11 -----------
> 1 file changed, 11 deletions(-)
It is not easy to check if the bpf syscall was indeed wired up in all
architectures we support, but let's assume it's the case as of 4.13 :-)
I have applied, with a slightly improved commit log:
package/libbpf: remove architecture restrictions
Since Buildroot commit 3145adfb69ba ("package/libbpf: needs headers >=
4.13"), libbpf depends on Linux headers >= 4.13. This requirement
renders the explicit list of supported architectures, previously added
in f693354c30bd overly restrictive, as the syscall number for bpf(2)
has been defined since Linux 3.18.
Commit f693354c30bd ("package/libbpf: add
BR2_PACKAGE_LIBBPF_ARCH_SUPPORTS") was introduced to fix a build issue
where a toolchain using very old kernel headers (3.13) failed to build
libbpf for ARM, but these architecture dependencies are no longer
needed due to the bump on the kernel headers version requirement.
Thanks a lot!
Thomas
--
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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