The libbpf build system currently uses the output of "uname -m" to
determine if the library should be installed in "lib" or
"lib64". However, uname -m returns the architecture of the build
machine, which often has nothing to do with the target CPU
architecture.
A patch has been submitted and accepted upstream to address this
issue, by using the $(CC) -dumpmachine output instead. This ensures
libbpf is installed in either "lib" or "lib64" depending on the
bitness of the target CPU architecture.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Since Buildroot commit 3145adfb69 ("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 f693354c30 overly restrictive, as the syscall number for bpf(2)
has been defined since Linux 3.18.
Commit f693354c30 ("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.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
libbpf does not support all architectures, for example ARM is not
supported resulting in the following build failure:
bpf.c:53:4: error: #error __NR_bpf not defined. libbpf does not support your arch.
# error __NR_bpf not defined. libbpf does not support your arch.
^
Fixes:
- http://autobuild.buildroot.org/results/288d54100a2e736195a3a04a9e2e035d02ea5c16
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
A mirror of bpf-next linux tree bpf-next/tools/lib/bpf
directory plus its supporting header files. The version
of the package reflects the version of ABI.
Signed-off-by: Jugurtha BELKALEM <jugurtha.belkalem@smile.fr>
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Qais Yousef <qais.yousef@arm.com>
Reviewed-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
[Arnout: add hash file]
Tobias Waldekranz