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From:   Rolf Eike Beer <eb@emlix.com>
To:     linux-kernel@vger.kernel.org, Alistair Delva <adelva@google.com>
Cc:     kernel-team@android.com, linux-kbuild@vger.kernel.org,
        Masahiro Yamada <masahiroy@kernel.org>
Subject: Re: [PATCH] kbuild: improve libelf detection
Date:   Wed, 13 Jan 2021 13:39:53 +0100
Message-ID: <1773849.ZV7lO1mt4u@devpool47>
Organization: emlix GmbH
In-Reply-To: <20210112190010.1582888-1-adelva@google.com>
References: <20210112190010.1582888-1-adelva@google.com>
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From: Rolf Eike Beer <eb@emlix.com>
To: linux-kernel@vger.kernel.org, Alistair Delva <adelva@google.com>
Cc: kernel-team@android.com, linux-kbuild@vger.kernel.org, Masahiro Yamada <masahiroy@kernel.org>
Subject: Re: [PATCH] kbuild: improve libelf detection
Date: Wed, 13 Jan 2021 13:39:53 +0100
Message-ID: <1773849.ZV7lO1mt4u@devpool47>
Organization: emlix GmbH
In-Reply-To: <20210112190010.1582888-1-adelva@google.com>
References: <20210112190010.1582888-1-adelva@google.com>

Am Dienstag, 12. Januar 2021, 20:00:10 CET schrieb Alistair Delva:
> When `pkg-config --libs' wasn't used or didn't return anything useful,
> the test for libelf would fail even if the headers and libraries were
> available to kbuild via KBUILD_HOSTCFLAGS and KBUILD_HOSTLDFLAGS.
>=20
> This makes the check in the core Makefile match the check that is done
> in tools/objtool/Makefile. Specifically, the C compiler is passed the
> full KBUILD_HOSTCFLAGS and KBUILD_HOSTLDFLAGS, which may have set up
> additional sysroot/include/library search paths to find libelf.

Sounds plausible.

=2D-=20
Rolf Eike Beer, emlix GmbH, http://www.emlix.com
=46on +49 551 30664-0, Fax +49 551 30664-11
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emlix - smart embedded open source

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