GNU bug report logs - #63948
qtbase@6 retains reference to ‘gcc-final’

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Message #10 received at 63948-done <at> debbugs.gnu.org (full text, mbox):

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 63948-done <at> debbugs.gnu.org
Subject: Re: bug#63948: qtbase <at> 6 retains reference to ‘gcc-final’
Date: Mon, 07 Aug 2023 23:38:49 -0400

Hello,

Ludovic Courtès <ludo <at> gnu.org> writes:

> The closure of ‘qtbase’ is unreasonable large, and this is in part
> because it retains a reference to GCC:
>
> $ guix graph -t references --path qtbase /gnu/store/gqld7hz5vm4g904g7nc77z7wzvdrrwyb-zlib-1.2.13
> /gnu/store/0zqk6bmgvwxh1kx963hhknwnqh3h0iik-qtbase-6.3.2
> /gnu/store/5lqhcv91ijy82p92ac6g5xw48l0lwwz4-gcc-11.3.0
> /gnu/store/gqld7hz5vm4g904g7nc77z7wzvdrrwyb-zlib-1.2.13
> $ guix build  -e '(@@ (gnu packages commencement) gcc-final)'
> /gnu/store/930nwsiysdvy2x5zv1sf6v7ym75z8ayk-gcc-11.3.0-lib
> /gnu/store/5lqhcv91ijy82p92ac6g5xw48l0lwwz4-gcc-11.3.0
> $ guix size qtbase | tail -1
> total: 1204.7 MiB
> $ guix describe
> Generation 265  Jun 04 2023 23:48:31    (current)
>   guix eed55a6
>     repository URL: https://git.savannah.gnu.org/git/guix.git
>     branch: master
>     commit: eed55a6544d5bda2245ec853e5fa4b28e1865bea
>
>
> This comes from a CMake file:
>
> $ grep -r 5lqhcv91ijy82p92ac6g5xw48l0lwwz4 /gnu/store/0zqk6bmgvwxh1kx963hhknwnqh3h0iik-qtbase-6.3.2
> /gnu/store/0zqk6bmgvwxh1kx963hhknwnqh3h0iik-qtbase-6.3.2/lib/cmake/Qt6/qt.toolchain.cmake:    set(__qt_initial_c_compiler "/gnu/store/5lqhcv91ijy82p92ac6g5xw48l0lwwz4-gcc-11.3.0/bin/gcc")
> /gnu/store/0zqk6bmgvwxh1kx963hhknwnqh3h0iik-qtbase-6.3.2/lib/cmake/Qt6/qt.toolchain.cmake:    set(__qt_initial_cxx_compiler "/gnu/store/5lqhcv91ijy82p92ac6g5xw48l0lwwz4-gcc-11.3.0/bin/c++")
>
> We should remove this reference.

Fixed with commit 98c17c14829349d4838186400541a7cd650b64d0; there's was
convenient QT_EMBED_TOOLCHAIN_COMPILER build switch we can use to
disable embedding the compilers in the CMake files.

Thanks for the report!

-- 
Maxim

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