bug#62343: libtool removes the "-no-canonical-prefixes" linker flag

[Thomas Jahns]

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@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!

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