Re: [Buildroot] [PATCH 1/1] boot/syslinux: fix build with gcc-15.x

From: Thomas Petazzoni via buildroot <buildroot@buildroot.org>
To: Bernd Kuhls <bernd@kuhls.net>
Cc: buildroot@buildroot.org, Julien Olivain <ju.o@free.fr>
Subject: Re: [Buildroot] [PATCH 1/1] boot/syslinux: fix build with gcc-15.x
Date: Fri, 15 Aug 2025 12:18:15 +0200	[thread overview]
Message-ID: <20250815121815.436050ec@windsurf> (raw)
In-Reply-To: <20250730190118.448997-1-bernd@kuhls.net>

Hello,

On Wed, 30 Jul 2025 21:01:18 +0200
Bernd Kuhls <bernd@kuhls.net> wrote:

> Fixes build error with gcc-15.x:
> 
> drivers/net/3c509-eisa.c:39:26: error:  initialization of 'void (*)(void)'
>  from incompatible pointer type 'void (*)(struct nic *, struct eisa_device *)'
>  [-Wincompatible-pointer-types]
> 
> For a similar fix see https://bugzilla.suse.com/show_bug.cgi?id=1243225
> 
> Signed-off-by: Bernd Kuhls <bernd@kuhls.net>

This change breaks the build with older compilers:

  https://gitlab.com/buildroot.org/buildroot/-/jobs/10975828975

I'm about to send a patch that will update the toolchain used in those
tests, papering over this issue, but I believe it is not normal to
break the build of syslinux with older compilers, such as:

    BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
    BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
    BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-i386-pentium4-full-2017.05-1078-g95b1dae.tar.bz2"
    BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
    BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_2=y
    BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
    # BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
    BR2_TOOLCHAIN_EXTERNAL_CXX=y

Best regards,

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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