From: Thomas Petazzoni via buildroot <buildroot@buildroot.org>
To: Shubham Chakraborty <chakrabortyshubham66@gmail.com>
Cc: buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH v2] package/libmpeg2: fix build with GCC 15
Date: Sat, 19 Sep 2026 00:09:39 +0200 [thread overview]
Message-ID: <aq22XrnHaroLUP72@windsurf> (raw)
In-Reply-To: <20260810165106.3930140-1-chakrabortyshubham66@gmail.com>
On Mon, Aug 10, 2026 at 10:21:05PM +0530, Shubham Chakraborty wrote:
> GCC 15 defaults to C23, which no longer supports K&R-style empty
> parameter list declarations used in libmpeg2. To avoid carrying intrusive
> patches that rewrite legacy K&R-style declarations, pass -std=gnu89
> to CFLAGS to restore the older compiler behavior.
>
> Fixes: http://autobuild.buildroot.net/results/53d/53daf0b4bd8b476252ca219e53a966405ece7e51
>
> Signed-off-by: Shubham Chakraborty <chakrabortyshubham66@gmail.com>
Thanks a lot, but I'm not able to reproduce the build issue in the
first place. The following defconfig uses gcc15 to build libmpeg2, and
it builds just fine:
BR2_aarch64=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
BR2_TOOLCHAIN_EXTERNAL_URL="https://toolchains.bootlin.com/downloads/releases/toolchains/aarch64/tarballs/aarch64--glibc--stable-2026.08-1.tar.xz"
BR2_TOOLCHAIN_EXTERNAL_GCC_15=y
BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_10=y
BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
# BR2_TOOLCHAIN_EXTERNAL_INET_RPC is not set
BR2_TOOLCHAIN_EXTERNAL_CXX=y
BR2_TOOLCHAIN_EXTERNAL_OPENMP=y
BR2_PACKAGE_LIBMPEG2=y
So... are you sure the problem is simply gcc 15.x? Or are there other
conditions/reasons?
Thomas
--
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
_______________________________________________
buildroot mailing list
buildroot@buildroot.org
https://lists.buildroot.org/mailman/listinfo/buildroot
next prev parent reply other threads:[~2026-09-18 22:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-21 8:14 [Buildroot] [PATCH] package/libmpeg2: fix build with GCC 15 Shubham Chakraborty
2026-05-31 12:10 ` Thomas Petazzoni via buildroot
2026-08-10 16:51 ` [Buildroot] [PATCH v2] " Shubham Chakraborty
2026-09-18 22:09 ` Thomas Petazzoni via buildroot [this message]
2026-09-20 10:12 ` Thomas Petazzoni via buildroot
2026-09-25 14:43 ` Raphaël Mélotte via buildroot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=aq22XrnHaroLUP72@windsurf \
--to=buildroot@buildroot.org \
--cc=chakrabortyshubham66@gmail.com \
--cc=thomas.petazzoni@bootlin.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox