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From: "Ludovic Courtès" <ludovic.courtes@inria.fr>
To: Efraim Flashner <efraim@flashner.co.il>
Cc: 43679@debbugs.gnu.org
Subject: [bug#43679] [PATCH 3/5] gnu: clang-toolchain: Create 'cc' and 'c++' symlinks.
Date: Thu, 08 Oct 2020 09:04:26 +0200	[thread overview]
Message-ID: <87h7r5ryf9.fsf@inria.fr> (raw)
In-Reply-To: <20201005121416.GK2958@E5400> (Efraim Flashner's message of "Mon,  5 Oct 2020 15:14:16 +0300")

Hi,

Efraim Flashner <efraim@flashner.co.il> skribis:

> On Tue, Sep 29, 2020 at 09:53:18AM +0200, Ludovic Courtès wrote:

[...]

>> >> +                     ;; Create 'cc' and 'c++' so that one can use it as a
>> >> +                     ;; drop-in replacement for the default tool chain and
>> >> +                     ;; have configure scripts find the compiler.
>> >> +                     (symlink "clang" (string-append out "/bin/cc"))
>> >> +                     (symlink "clang++" (string-append out "/bin/c++"))
>> >> +
>> >>                       (union-build (assoc-ref %outputs "debug")
>> >>                                    (list (assoc-ref %build-inputs
>> >>                                                     "libc-debug")))
>> >> -- 
>> >> 2.28.0
>> >
>> > Isn't this something we've turned down patches for in the past with gcc?
>> 
>> That is true, and, ahem, I even know a person who was against it.
>> 
>> But!  I think it’s a bit different here: (1) we’re only changing
>> ‘clang-toolchain’, not ‘clang’, (2) while most build systems look for
>> ‘gcc’ in addition to ‘cc’, few of them look for ‘clang’.
>> 
>> ‘--with-toolchain’ is useful even if ‘clang-toolchain’ cannot be dropped
>> in (it allows you to try out different GCC versions, for instance), but
>> I think it’s more useful if one can use it to build their code with a
>> different free tool chain.  One use case that comes to mind is
>> portability testing for C/C++ developers.
>> 
>> WDYT?
>
> Do we want to have gcc-toolchain provide a cc binary then too? It seems
> like it would also help people who have a project they want to build by
> hand which has the compiler set as cc and they install the
> gcc-toolchain.

I’m not enthusiastic (I think it’s good that build systems and tools
keep referring to ‘gcc’) but I guess I’ll have a more difficult time
arguing against it now…

Ludo’.




  reply	other threads:[~2020-10-08  7:05 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-28 19:53 [bug#43679] [PATCH 0/5] Add '--with-toolchain' package transformation option Ludovic Courtès
2020-09-28 19:56 ` [bug#43679] [PATCH 1/5] gnu: gcc-toolchain: Add 'GUIX_LOCPATH' to the search paths Ludovic Courtès
2020-09-28 19:56   ` [bug#43679] [PATCH 2/5] gnu: clang-toolchain: " Ludovic Courtès
2020-09-28 19:56   ` [bug#43679] [PATCH 3/5] gnu: clang-toolchain: Create 'cc' and 'c++' symlinks Ludovic Courtès
2020-09-29  5:42     ` Efraim Flashner
2020-09-29  7:53       ` Ludovic Courtès
2020-10-05 12:14         ` Efraim Flashner
2020-10-08  7:04           ` Ludovic Courtès [this message]
2020-09-28 19:56   ` [bug#43679] [PATCH 4/5] packages: Add 'package-with-toolchain' Ludovic Courtès
2020-09-28 19:56   ` [bug#43679] [PATCH 5/5] guix build: Add '--with-toolchain' Ludovic Courtès
2020-09-29 10:44 ` [bug#43679] [PATCH 0/5] Add '--with-toolchain' package transformation option zimoun
2020-09-30  8:46   ` Ludovic Courtès
2020-09-30 13:32     ` zimoun
2020-09-30 16:58       ` Ludovic Courtès
2020-10-09  9:12         ` [bug#43679] [PATCH v2 0/5] Add '--with-c-toolchain' Ludovic Courtès
2020-10-09  9:12           ` [bug#43679] [PATCH v2 1/5] gnu: gcc-toolchain: Add 'GUIX_LOCPATH' to the search paths Ludovic Courtès
2020-10-09  9:12           ` [bug#43679] [PATCH v2 2/5] gnu: clang-toolchain: " Ludovic Courtès
2020-10-09  9:12           ` [bug#43679] [PATCH v2 3/5] gnu: clang-toolchain: Create 'cc' and 'c++' symlinks Ludovic Courtès
2020-10-09  9:12           ` [bug#43679] [PATCH v2 4/5] packages: Add 'package-with-c-toolchain' Ludovic Courtès
2020-10-09  9:12           ` [bug#43679] [PATCH v2 5/5] guix build: Add '--with-c-toolchain' Ludovic Courtès
2020-10-12 16:27           ` bug#43679: [PATCH v2 0/5] " Ludovic Courtès

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