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Date:   Mon, 29 Aug 2022 12:25:59 -0700
From:   Kees Cook <>
To:     Robert Elliott <>
Subject: Re: [PATCH] docs/core-api: expand Fedora instructions for GCC plugins

On Sat, Aug 27, 2022 at 02:38:36PM -0500, Robert Elliott wrote:
> In Fedora 36, cross-compiling an allmodconfig configuration
> for other architectures on x86 fails with this problem:
> In file included from ../scripts/gcc-plugins/gcc-common.h:95,
>                  from ../scripts/gcc-plugins/latent_entropy_plugin.c:78:
> /usr/lib/gcc/aarch64-linux-gnu/12/plugin/include/builtins.h:23:10: fatal
> error: mpc.h: No such file or directory
>    23 | #include <mpc.h>
>       |          ^~~~~~~
> compilation terminated.
> In that distro, that header file is available in the separate
> libmpc-devel package.
> Although future versions of Fedora might correctly mark
> that dependency, mention this additional package.
> To help detect such problems ahead of time, describe the
>     gcc -print-file-name=plugin
> command that is used by scripts/gcc-plugins/Kconfig to detect
> plugins [1].
> [1]
> Fixes: 43e96ef8b70c50f ("docs/core-api: Add Fedora instructions for GCC plugins");
> Signed-off-by: Robert Elliott <>


Reviewed-by: Kees Cook <>

Jon, do you want to take this since it's entirely in the .rst file?

Kees Cook

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