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Date: Mon, 17 Apr 2023 22:31:09 +0200
From: Szabolcs Nagy <nsz@port70.net>
To: Lorenz Hipp <jHhvLtwZki@irdisch.de>
Cc: musl@lists.openwall.com
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	musl@lists.openwall.com
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Subject: Re: [musl] Add musl-ldd for user convenience and to avoid naming
 conflict

* Lorenz Hipp <jHhvLtwZki@irdisch.de> [2023-04-17 04:36:24 +0200]:
> The default "ldd" program on most Linux systems is surely the script
> provided by the gnu libc implementation.
> 
> Unfortunately, (for reasons I won't go into detail) their program
> cannot work properly with programs linked with musl, as it prints an
> error message :
> 
>     musl-gcc -o Test-musl Test-musl.c
>     ldd Test-musl
> 
>     ./Test-musl: error while loading shared libraries: /usr/lib/libc.so: invalid ELF header
> 
> Since the mentioned file is of course a linker script and just text, it
> cannot have a valid ELF header.
> 
> 
> Following the FAQ on the musl website at
> 
>     https://wiki.musl-libc.org/faq.html#Q:-Where-is-%3Ccode%3Eldd%3C/code%3E?
> 
> the musl linker actually has 'ldd' functionality, which is used when
> it is called as "ldd".
> 
> Quote :
> 
>     Just create a symlink from ld-musl-$ARCH.so to /bin/ldd.
> 
> At least on machines where software is developed, it would not be
> a good idea to replace the glibc ldd script with a link to the musl
> linker, because of .. reasons (such as slightly different output behaviour).

i think the faq should be updated to use

 /lib/ld-musl-$arch.so.1 --list path/to/exe

which you can put in a script and name it ldd if you want.