[Buildroot] [RFC PATCH v1 0/2] Use host-libbpf for host-pahole.

From: Francis Laniel <flaniel@linux.microsoft.com>
To: buildroot@buildroot.org
Cc: Francis Laniel <flaniel@linux.microsoft.com>,
	Romain Naour <romain.naour@gmail.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: [Buildroot] [RFC PATCH v1 0/2] Use host-libbpf for host-pahole.
Date: Fri, 22 Apr 2022 19:16:10 +0100	[thread overview]
Message-ID: <20220422181612.51246-1-flaniel@linux.microsoft.com> (raw)

Hi.

Following a failed build involving libbpf, Thomas Pettazzoni suggested me to
remove git submodule from host-pahole to build it the "buildroot way".

So, in this contribution, I first added host recipe to libbpf.
Then, I removed git submobule used by host-pahole to get libbpf to instead use
host-libbpf.

I was able to build and run a qemu image:
Welcome to Buildroot
buildroot login: root
# zcat /proc/config.gz | grep BTF
CONFIG_DEBUG_INFO_BTF=y
CONFIG_PAHOLE_HAS_SPLIT_BTF=y
CONFIG_DEBUG_INFO_BTF_MODULES=y

Nonetheless, I am not really happy with this contribution as I had to add a bad
tweak removing a header file installed by host-libbpf to avoid a kernel build
error:

So, I marked this contribution as RFC to get your opinions about it.

Francis Laniel (2):
  package/libbpf: build for host
  package/pahole: use commit 73383b3a39af

 linux/linux.mk             | 11 +++++++++++
 package/libbpf/libbpf.mk   |  7 +++++++
 package/pahole/pahole.hash |  2 +-
 package/pahole/pahole.mk   | 14 +++++++-------
 4 files changed, 26 insertions(+), 8 deletions(-)

Best regards and thank you in advance.
-- 
2.25.1

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