[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[bug#43679] [PATCH 3/5] gnu: clang-toolchain: Create 'cc' and 'c++' syml
From: |
Ludovic Courtès |
Subject: |
[bug#43679] [PATCH 3/5] gnu: clang-toolchain: Create 'cc' and 'c++' symlinks. |
Date: |
Tue, 29 Sep 2020 09:53:18 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) |
Hi Efraim,
Efraim Flashner <efraim@flashner.co.il> skribis:
> On Mon, Sep 28, 2020 at 09:56:46PM +0200, Ludovic Courtès wrote:
>> From: Ludovic Courtès <ludovic.courtes@inria.fr>
>>
>> * gnu/packages/llvm.scm (make-clang-toolchain)[arguments]: Create 'cc'
>> and 'c++' symlinks.
>> ---
>> gnu/packages/llvm.scm | 6 ++++++
>> 1 file changed, 6 insertions(+)
>>
>> diff --git a/gnu/packages/llvm.scm b/gnu/packages/llvm.scm
>> index 4b42c4921a..361b39710b 100644
>> --- a/gnu/packages/llvm.scm
>> +++ b/gnu/packages/llvm.scm
>> @@ -476,6 +476,12 @@ code analysis tools.")
>> (((names . directories) ...)
>> (union-build out directories)))
>>
>> + ;; 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?
Thanks,
Ludo’.