Re: Building a GUI - where to start?

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 Thanks Zeckma! I continued searching around, and found some posts on a
glibc mailing list that pointed me to the Mesa fix. Building Mesa 25.3.5
worked. Appreciate your help!

On Tue, Mar 3, 2026 at 5:27=E2=80=AFPM Zeckma <
[email protected]> wrote:

> On 3/3/26 17:12, "stephan" ([email protected] via blfs-support
> Mailing List) wrote:
>  > Thanks Eric, I see that now.
>  >
>  > At any rate, I rebuilt rust after building LLVM, and it seems that
>  > that error has been resolved. I have a new issue trying to install
>  > Mesa, and am again stuck.
>  >
>  > Compiling C object src/c11/impl/libmesa_util_c11.a.p/threads_posix.c.o
>  > FAILED: [code=3D1] src/c11/impl/libmesa_util_c11.a.p/threads_posix.c.o
>  >
>  > ../source/c11/threads.h:121:25: error: conflicting types for
> 'once_flag'; have
>  > 'pth read_once_t' {aka 'int}
>  >
>  > there are a couple of other errors related to this same threads.h file.
>
> You mentioned earlier in this thread that you are using an older Mesa
> version, but mentioned using basically LFS-13.0rc1. This is a
> build failure as a result of using a newer toolchain to build an older
> Mesa version. It's caused by glibc-2.43.
>
> I recommend using Mesa-25.3.5 using the instructions from
> https://linuxfromscratch.org/blfs/view/systemd/x/mesa.html, which fixes
> the issue. If you want to use the older Mesa version, you can try
> fixing Mesa following the diff here:
>
> https://gitlab.freedesktop.org/mesa/mesa/-/commit/179e744f7577d98df7c79d7=
324c22acfb32a0154
> .
> Doing that isn't recommended.
>
> You also mentioned libglvnd, which shouldn't cause a configuration
> issue unless `-D glvnd=3Denabled` was passed.
>
> - Zeckma
> --
> http://lists.linuxfromscratch.org/sympa/info/blfs-support
> Unsubscribe: See the above information page
>

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<div dir=3D"ltr">
<font color=3D"#888888">Thanks Zeckma! I continued searching around, and=20
found some posts on a glibc mailing list that pointed me to the Mesa=20
fix. Building Mesa 25.3.5 worked. Appreciate your help!=C2=A0</font>

<br></div><br><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"=
ltr" class=3D"gmail_attr">On Tue, Mar 3, 2026 at 5:27=E2=80=AFPM Zeckma &lt=
;<a href=3D"mailto:[email protected]">blfs-support@li=
sts.linuxfromscratch.org</a>&gt; wrote:<br></div><blockquote class=3D"gmail=
_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204=
,204);padding-left:1ex">On 3/3/26 17:12, &quot;stephan&quot; (<a href=3D"ma=
ilto:[email protected]" target=3D"_blank">[email protected]=
</a> via blfs-support<br>
Mailing List) wrote:<br>
=C2=A0&gt; Thanks Eric, I see that now.<br>
=C2=A0&gt;<br>
=C2=A0&gt; At any rate, I rebuilt rust after building LLVM, and it seems th=
at<br>
=C2=A0&gt; that error has been resolved. I have a new issue trying to insta=
ll<br>
=C2=A0&gt; Mesa, and am again stuck.<br>
=C2=A0&gt;<br>
=C2=A0&gt; Compiling C object src/c11/impl/libmesa_util_c11.a.p/threads_pos=
ix.c.o<br>
=C2=A0&gt; FAILED: [code=3D1] src/c11/impl/libmesa_util_c11.a.p/threads_pos=
ix.c.o<br>
=C2=A0&gt;<br>
=C2=A0&gt; ../source/c11/threads.h:121:25: error: conflicting types for <br>
&#39;once_flag&#39;; have<br>
=C2=A0&gt; &#39;pth read_once_t&#39; {aka &#39;int}<br>
=C2=A0&gt;<br>
=C2=A0&gt; there are a couple of other errors related to this same threads.=
h file.<br>
<br>
You mentioned earlier in this thread that you are using an older Mesa<br>
version, but mentioned using basically LFS-13.0rc1. This is a<br>
build failure as a result of using a newer toolchain to build an older<br>
Mesa version. It&#39;s caused by glibc-2.43.<br>
<br>
I recommend using Mesa-25.3.5 using the instructions from<br>
<a href=3D"https://linuxfromscratch.org/blfs/view/systemd/x/mesa.html" rel=
=3D"noreferrer" target=3D"_blank">https://linuxfromscratch.org/blfs/view/sy=
stemd/x/mesa.html</a>, which fixes<br>
the issue. If you want to use the older Mesa version, you can try<br>
fixing Mesa following the diff here:<br>
<a href=3D"https://gitlab.freedesktop.org/mesa/mesa/-/commit/179e744f7577d9=
8df7c79d7324c22acfb32a0154" rel=3D"noreferrer" target=3D"_blank">https://gi=
tlab.freedesktop.org/mesa/mesa/-/commit/179e744f7577d98df7c79d7324c22acfb32=
a0154</a>.<br>
Doing that isn&#39;t recommended.<br>
<br>
You also mentioned libglvnd, which shouldn&#39;t cause a configuration<br>
issue unless `-D glvnd=3Denabled` was passed.<br>
<br>
- Zeckma<br>
-- <br>
<a href=3D"http://lists.linuxfromscratch.org/sympa/info/blfs-support" rel=
=3D"noreferrer" target=3D"_blank">http://lists.linuxfromscratch.org/sympa/i=
nfo/blfs-support</a><br>
Unsubscribe: See the above information page<br>
</blockquote></div>

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