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Message-ID: <20230417203109.GO3630668@port70.net>
Date: Mon, 17 Apr 2023 22:31:09 +0200
From: Szabolcs Nagy <nsz@...t70.net>
To: Lorenz Hipp <jHhvLtwZki@...isch.de>
Cc: musl@...ts.openwall.com
Subject: Re: Add musl-ldd for user convenience and to avoid naming
conflict
* Lorenz Hipp <jHhvLtwZki@...isch.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.
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