GNU bug report logs - #62343
libtool removes the "-no-canonical-prefixes" linker flag

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Carlos Galvez <carlosgalvezp <at> gmail.com>
To: bug-libtool <at> gnu.org
Subject: libtool removes the "-no-canonical-prefixes" linker flag
Date: Tue, 21 Mar 2023 15:29:59 +0100

[Message part 1 (text/plain, inline)]

Hi!

I'm using libtool 2.4.6. I realize that it's removing a very important
linker flag, making my linking fail.

The command I send is:

../../libtool  --tag=CC   --mode=link /path/to/gcc -no-canonical-prefixes
<other_flags> <object_files>...

And what libtool prints is:

libtool: link: /path/to/gcc -shared <other_flags> <object_files> ...

Why is the "-no-canonical-prefixes" flag removed from the linking command?
If I manually execute linking outside libtool, and add the required flag,
linking works successfully.

Thanks!

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Message #8 received at 62343 <at> debbugs.gnu.org (full text, mbox):

From: Thomas Jahns <jahns <at> dkrz.de>
To: Carlos Galvez <carlosgalvezp <at> gmail.com>
Cc: 62343 <at> debbugs.gnu.org
Subject: Re: bug#62343: libtool removes the "-no-canonical-prefixes" linker
 flag
Date: Thu, 30 Mar 2023 01:13:00 +0200

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Hi,

the approach I take in my configure scripts is to protect well-known options with -Xlinker, -Xcompiler or -XCClinker as appropriate. This is as part of a macro that switches configure compilations from using the compiler(s) as-is to instead use the libtool wrapper as soon as possible, already during configure.

I understand why libtool decided to simply strip unknown options, but I think this decision made some assumptions regarding ever-improving libtool, i.e. keeping up with new compiler options eventually, that simply did not materialize.

Kind regards,
Thomas

> On Mar 21, 2023, at 15:29 , Carlos Galvez <carlosgalvezp <at> gmail.com> wrote:
> 
> Hi!
> 
> I'm using libtool 2.4.6. I realize that it's removing a very important linker flag, making my linking fail. 
> 
> The command I send is:
> 
> ../../libtool  --tag=CC   --mode=link /path/to/gcc -no-canonical-prefixes <other_flags> <object_files>...
> 
> And what libtool prints is:
> 
> libtool: link: /path/to/gcc -shared <other_flags> <object_files> ...
> 
> Why is the "-no-canonical-prefixes" flag removed from the linking command? If I manually execute linking outside libtool, and add the required flag, linking works successfully.
> 
> Thanks!
> _______________________________________________
> Bug-libtool mailing list
> Bug-libtool <at> gnu.org
> https://lists.gnu.org/mailman/listinfo/bug-libtool

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Message #13 received at 62343-done <at> debbugs.gnu.org (full text, mbox):

From: Ileana Dumitrescu <ileanadumitrescu95 <at> gmail.com>
To: 62343-done <at> debbugs.gnu.org
Subject: Re: bug#62343: libtool removes the "-no-canonical-prefixes" linker
Date: Thu, 18 Apr 2024 19:48:51 +0300

[Message part 1 (text/plain, inline)]

Thank you for the bug report! libtool should pass the
"-no-canonical-prefixes" flag to the linker now.

-- 
Ileana Dumitrescu

GPG Public Key: FA26 CA78 4BE1 8892 7F22 B99F 6570 EA01 146F 7354

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