[debbugs-tracker] bug#37550: closed ([core-updates] [PATCH] gnu: gcc: Fix i686-linux cross compiler. )

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Your message dated Sun, 29 Sep 2019 16:22:07 +0200
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and subject line Re: bug#37550: [core-updates] [PATCH] gnu: gcc: Fix i686-linux 
cross compiler.
has caused the debbugs.gnu.org bug report #37550,
regarding [core-updates] [PATCH] gnu: gcc: Fix i686-linux cross compiler. 
to be marked as done.

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37550: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=37550
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> --- Begin Message ---
>
>
>
> Subject: 
>
> [core-updates] [PATCH] gnu: gcc: Fix i686-linux cross compiler. 
>
>
>
>
> Date: 
>
> Sun, 29 Sep 2019 13:21:11 +0200
>
>
>
>
> Running
>
>     ./pre-inst-env guix build --target=i686-unknown-linux-gnu hello
>
> on core-updates (and similarly on core-updates-next) fails with
>
> --8<---------------cut here---------------start------------->8---
> checking for i686-unknown-linux-gnu-gcc... 
> /tmp/guix-build-gcc-cross-sans-libc-i686-unknown-linux-gnu-7.4.0.drv-0/build/./gcc/xgcc
>  
> -B/tmp/guix-build-gcc-cross-sans-libc-i686-unknown-linux-gnu-7.4.0.drv-0/build/./gcc/
>  
> -B/gnu/store/p4x4981zidgq36rjkx0bxb466s81xk2z-gcc-cross-sans-libc-i686-unknown-linux-gnu-7.4.0/i686-unknown-linux-gnu/bin/
>  
> -B/gnu/store/p4x4981zidgq36rjkx0bxb466s81xk2z-gcc-cross-sans-libc-i686-unknown-linux-gnu-7.4.0/i686-unknown-linux-gnu/lib/
>  -isystem 
> /gnu/store/p4x4981zidgq36rjkx0bxb466s81xk2z-gcc-cross-sans-libc-i686-unknown-linux-gnu-7.4.0/i686-unknown-linux-gnu/include
>  -isystem 
> /gnu/store/p4x4981zidgq36rjkx0bxb466s81xk2z-gcc-cross-sans-libc-i686-unknown-linux-gnu-7.4.0/i686-unknown-linux-gnu/sys-include
>    
> checking for C compiler default output file name... 
> configure: error: in 
> `/tmp/guix-build-gcc-cross-sans-libc-i686-unknown-linux-gnu-7.4.0.drv-0/build/i686-unknown-linux-gnu/libmpx':
> configure: error: C compiler cannot create executables
> See `config.log' for more details.
> --8<---------------cut here---------------end--------------->8---
>
> The attached patch fixes this.
>
> I stumbled upon this while working to fix #37549.  Where should this
> patch land?
>
> Greetings,
> janneke
>
> >From 522aac698a66ca8ab73ac3827c61cb65627684d3 Mon Sep 17 00:00:00 2001
> From: Jan Nieuwenhuizen <address@hidden>
> Date: Sun, 29 Sep 2019 13:08:01 +0200
> Subject: [PATCH] gnu: gcc: Fix i686-linux cross compiler.
>
> This resurrects
>
>     ./pre-inst-env guix build --target=i686-unknown-linux-gnu hello
>
> * gnu/packages/cross-base.scm (cross-gcc-arguments): Do not build libmpx;
> does not cross-configure.
> ---
>  gnu/packages/cross-base.scm | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/gnu/packages/cross-base.scm b/gnu/packages/cross-base.scm
> index 7108000f06..fab4636450 100644
> --- a/gnu/packages/cross-base.scm
> +++ b/gnu/packages/cross-base.scm
> @@ -144,6 +144,7 @@ base compiler and using LIBC (which may be either a libc 
> package or #f.)"
>                                 "--disable-libatomic"
>                                 "--disable-libmudflap"
>                                 "--disable-libgomp"
> +                               "--disable-libmpx" ; C compiler cannot create 
> executables
>                                 "--disable-libssp"
>                                 "--disable-libquadmath"
>                                 "--disable-decimal-float" ;would need libc
> -- 
> 2.23.0
>
> -- 
> Jan Nieuwenhuizen <address@hidden> | GNU LilyPond http://lilypond.org
> Freelance IT http://JoyofSource.com | Avatar® http://AvatarAcademy.com
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#37550: [core-updates] [PATCH] gnu: gcc: Fix i686-linux cross compiler.
>
>
>
>
> Date: 
>
> Sun, 29 Sep 2019 16:22:07 +0200
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)
>
>
>
>
> Marius Bakke writes:
>
> > Jan Nieuwenhuizen <address@hidden> writes:
> >> I stumbled upon this while working to fix #37549.  Where should this
> >> patch land?
> >
> > This patch should be safe for 'core-updates'.  Please double check that
> > it does not rebuild the world, though.  :-)
>
> I was hesitating and re-checked on a fresh computer.
>
> > libmpx does not build natively either (see 01e8263febb) and has been
> > removed from GCC entirely in version 9.
>
> Ah, good to know.  I was worrying about just dropping it.
>
> >> +                               "--disable-libmpx" ; C compiler cannot 
> >> create executables
> >
> > IMO the comment is unnecessary.  LGTM!
> >
>
> Removed, and pushed to core-updates as 43124a54744b64dcdbdd8f92d2a037bf8e0dd215
>
> Thanks!
> janneke
>
> -- 
> Jan Nieuwenhuizen <address@hidden> | GNU LilyPond http://lilypond.org
> Freelance IT http://JoyofSource.com | Avatar® http://AvatarAcademy.com
>
>
> --- End Message ---