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

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From: Thomas Jahns <jahns <at> dkrz.de>
To: Carlos Galvez <carlosgalvezp <at> gmail.com>
Cc: 62343 <at> debbugs.gnu.org
Subject: 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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