linux-kernel - Re: next-20250909: selftests/arm64/gcs/basic-gcs.c:390:30: error: use of undeclared identifier 'HWCAP

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Message-ID: <a1dc9839-ab45-4dd6-9eeb-4bbc35bf8d90@sirena.org.uk>
Date: Fri, 12 Sep 2025 12:14:00 +0100
From: Mark Brown <broonie@...nel.org>
To: Thomas Weißschuh <linux@...ssschuh.net>
Cc: Naresh Kamboju <naresh.kamboju@...aro.org>,
	open list <linux-kernel@...r.kernel.org>,
	Linux ARM <linux-arm-kernel@...ts.infradead.org>,
	"open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@...r.kernel.org>,
	lkft-triage@...ts.linaro.org,
	Linux Regressions <regressions@...ts.linux.dev>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...db.de>,
	Dan Carpenter <dan.carpenter@...aro.org>,
	Anders Roxell <anders.roxell@...aro.org>,
	Ben Copeland <benjamin.copeland@...aro.org>,
	Shuah Khan <shuah@...nel.org>
Subject: Re: next-20250909: selftests/arm64/gcs/basic-gcs.c:390:30: error:
 use of undeclared identifier 'HWCAP_GCS'

On Fri, Sep 12, 2025 at 01:07:58PM +0200, Thomas Weißschuh wrote:

> The Makefile does *not* use -nostdinc, so the nolibc program probably finds the toolchain's glibc asm/hwcap.h.
> There also doesn't seem to be a static arm64 hwcap header in tools/include in the first place.
> I am still wondering how this works for the other tests.

make headers_install puts a copy in usr/include, probably we just need
to include that in the include path.

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