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Date: Mon, 16 Mar 2026 17:02:15 +0100
From: Nicolas Schier <nsc@kernel.org>
To: Mark Brown <broonie@kernel.org>
Cc: Yonghong Song <yonghong.song@linux.dev>,
	Nathan Chancellor <nathan@kernel.org>,
	KBuild Mailing List <linux-kbuild@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Next Mailing List <linux-next@vger.kernel.org>
Subject: Re: linux-next: build failure after merge of the kbuild tree
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	Mark Brown <broonie@kernel.org>,
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In-Reply-To: <abgRRX3PH9IaExi8@sirena.org.uk>

Hi Mark,

On Mon, Mar 16, 2026 at 02:18:45PM +0000, Mark Brown wrote:
> Hi all,
> 
> After merging the kbuild tree, today's linux-next build (arm64 perf)
> failed like this:
> 
> Auto-detecting system features:
> ...                                   libdw: [ on  ]
> ...                                   glibc: [ on  ]
> ...                                  libelf: [ on  ]
> ...                                 libnuma: [ on  ]
> ...                  numa_num_possible_cpus: [ on  ]
> ...                               libpython: [ on  ]
> ...                             libcapstone: [ on  ]
> ...                               llvm-perf: [ on  ]
> ...                                    zlib: [ on  ]
> ...                                    lzma: [ on  ]
> ...                                     bpf: [ on  ]
> ...                                  libaio: [ on  ]
> ...                                 libzstd: [ on  ]
> ...                              libopenssl: [ on  ]
> ...                                    rust: [ on  ]
> 
> Makefile:2254: *** extraneous 'endif'.  Stop.
> Makefile:2254: *** extraneous 'endif'.  Stop.
>   PERF_VERSION = .gbc1f864a1976
> 52.34user 4.91system 0:56.88elapsed 100%CPU (0avgtext+0avgdata 140840maxresident)k
> 0inputs+0outputs (0major+1379795minor)pagefaults 0swaps
> Building: arm64 allnoconfig
> Makefile:2254: *** extraneous 'endif'.  Stop.
> 
> Presumably caused by commit
> 
>   6a76b3c06a1d3 (kbuild: Reduce the number of compiler-generated suffixes for clang thin-lto build)
> 
> though I don't immediately see how.  I have used the version from
> next-20260313 instead.

thanks for the report.  Unfortunately, I cannot reproduce that anyhow;
but I pushed to kbuild/kbuild-for-next at 12:36 UTC, might that have
been a bad point in time?  Do you have your merge somewhere around where
I can fetch it for investigation?

Kind regards,
Nicolas