musl ldd?

musl ldd?

[John Mudd]

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Is there a substitute for 'ldd' command to list shared library dependencies
for musl compiled executables?

$ ldd postgresql-*.install/bin/postgres
postgresql-9.4.1.install/bin/postgres: error while loading shared
libraries: /usr/lib/i386-linux-gnu/libc.so: invalid ELF header
$

John

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Re: musl ldd?

[Szabolcs Nagy]

* John Mudd <johnbmudd@gmail.com> [2015-04-03 10:16:32 -0400]:
> Is there a substitute for 'ldd' command to list shared library dependencies
> for musl compiled executables?
> 
> $ ldd postgresql-*.install/bin/postgres
> postgresql-9.4.1.install/bin/postgres: error while loading shared
> libraries: /usr/lib/i386-linux-gnu/libc.so: invalid ELF header

make it a symlink to the libc/loader

$ readlink /usr/bin/ldd
../../lib/ld-musl-x86_64.so.1
$ ldd /usr/bin/python
	/lib/ld-musl-x86_64.so.1 (0x72afa0d19000)
	libpython2.7.so.1.0 => /usr/lib/libpython2.7.so.1.0 (0x72afa0786000)
	libc.musl-x86_64.so.1 => /lib/ld-musl-x86_64.so.1 (0x72afa0d19000)

Re: musl ldd?

[Wermut]

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If there are other ldd providing C libraries installed, you can also make a
link with its name ending in *ldd for the musl libc/loader.

e.g. # ln -s /usr/local/bin/musl-ldd /lib/ld-musl-x86_64.so.1

On Fri, Apr 3, 2015 at 4:55 PM Szabolcs Nagy <nsz@port70.net> wrote:

> * John Mudd <johnbmudd@gmail.com> [2015-04-03 10:16:32 -0400]:
> > Is there a substitute for 'ldd' command to list shared library
> dependencies
> > for musl compiled executables?
> >
> > $ ldd postgresql-*.install/bin/postgres
> > postgresql-9.4.1.install/bin/postgres: error while loading shared
> > libraries: /usr/lib/i386-linux-gnu/libc.so: invalid ELF header
>
> make it a symlink to the libc/loader
>
> $ readlink /usr/bin/ldd
> ../../lib/ld-musl-x86_64.so.1
> $ ldd /usr/bin/python
>         /lib/ld-musl-x86_64.so.1 (0x72afa0d19000)
>         libpython2.7.so.1.0 => /usr/lib/libpython2.7.so.1.0
> (0x72afa0786000)
>         libc.musl-x86_64.so.1 => /lib/ld-musl-x86_64.so.1 (0x72afa0d19000)
>

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Re: musl ldd?

[Rich Felker]

On Fri, Apr 03, 2015 at 07:41:08PM +0000, Wermut wrote:
> If there are other ldd providing C libraries installed, you can also make a
> link with its name ending in *ldd for the musl libc/loader.
> 
> e.g. # ln -s /usr/local/bin/musl-ldd /lib/ld-musl-x86_64.so.1

Or you can invoke it as:

/lib/ld-musl-x86_64.so.1 --list a.out

This form is the nicest in many ways since it does not depend on
argv[0].

Rich

Re: musl ldd?

[Matias A. Fonzo]

Hi there,

There's a special reason why "[libc_name-]ldd -> libc/loader" is not
generated when musl is configured/installed?.

El Fri, 3 Apr 2015 15:58:00 -0400
Rich Felker <dalias@libc.org> escribió:
> On Fri, Apr 03, 2015 at 07:41:08PM +0000, Wermut wrote:
> > If there are other ldd providing C libraries installed, you can
> > also make a link with its name ending in *ldd for the musl
> > libc/loader.
> > 
> > e.g. # ln -s /usr/local/bin/musl-ldd /lib/ld-musl-x86_64.so.1
> 
> Or you can invoke it as:
> 
> /lib/ld-musl-x86_64.so.1 --list a.out
> 
> This form is the nicest in many ways since it does not depend on
> argv[0].
> 
> Rich

musl, netdb.h rcmd inetutils?

[Jean-Marc Pigeon]

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Hello,


Trying to compile inetutils within native musl.

Trouble with src/rpc.c using function "rcmd"

Within glibc, rcmd is defined inside
/usr/include/netdb.h.

I was not able to locate rcmd (or an alternative)
within musl library.

Could someone suggest a way to bypass this problem?

(rcmd is used twithin rpc,
 rpc - library routines for remote procedure calls)

Thanks for help.


- -- 

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===========================================================
Jean-Marc Pigeon                        E-Mail: jmp@safe.ca
SAFE Inc.                             Phone: (514) 493-4280
  Clement, 'a kiss solution' to get rid of SPAM (at last)
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Re: musl, netdb.h rcmd inetutils?

[Justin Cormack]

On 13 April 2015 at 09:00, Jean-Marc Pigeon <jmp@safe.ca> wrote:
> Trying to compile inetutils within native musl.
>
> Trouble with src/rpc.c using function "rcmd"
>
> Within glibc, rcmd is defined inside
> /usr/include/netdb.h.
>
> I was not able to locate rcmd (or an alternative)
> within musl library.
>
> Could someone suggest a way to bypass this problem?
>
> (rcmd is used twithin rpc,
>  rpc - library routines for remote procedure calls)

rcmd is obsolete - it is the unencrypted insecure "predecessor" to
ssh. There must be an option to compile inetutils without it.

Justin

Re: musl, netdb.h rcmd inetutils?

[Jean-Marc Pigeon]

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Hello,

On 04/13/2015 05:52 AM, Justin Cormack wrote:
> On 13 April 2015 at 09:00, Jean-Marc Pigeon <jmp@safe.ca> wrote:
>> Trying to compile inetutils within native musl.
>> 
>> Trouble with src/rpc.c using function "rcmd"
>> 
>> Within glibc, rcmd is defined inside /usr/include/netdb.h.
>> 
>> I was not able to locate rcmd (or an alternative) within musl
>> library.
>> 
>> Could someone suggest a way to bypass this problem?
>> 
>> (rcmd is used twithin rpc, rpc - library routines for remote
>> procedure calls)
> 
> rcmd is obsolete - it is the unencrypted insecure "predecessor" to 
> ssh. There must be an option to compile inetutils without it.
> 
> Justin

Good point!, forgot to double check the configure option...
configure --disable-rlogin --disable-rcp  etc...
compiling fine now...

Many thanks.

> 


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A bientôt
===========================================================
Jean-Marc Pigeon                        E-Mail: jmp@safe.ca
SAFE Inc.                             Phone: (514) 493-4280
  Clement, 'a kiss solution' to get rid of SPAM (at last)
     Clement' Home base <"http://www.clement.safe.ca">
===========================================================
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Re: musl, netdb.h rcmd inetutils?

[Rich Felker]

On Mon, Apr 13, 2015 at 04:00:50AM -0400, Jean-Marc Pigeon wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Hello,
> 
> 
> Trying to compile inetutils within native musl.
> 
> Trouble with src/rpc.c using function "rcmd"
> 
> Within glibc, rcmd is defined inside
> /usr/include/netdb.h.
> 
> I was not able to locate rcmd (or an alternative)
> within musl library.
> 
> Could someone suggest a way to bypass this problem?
> 
> (rcmd is used twithin rpc,
>  rpc - library routines for remote procedure calls)
> 
> Thanks for help.

As an aside, could you please refrain from replying to an existing
thread with a new question? This is usually referred to as hijacking
threads and it makes it much harder to manage email. I suspect this is
unintentional (lots of 'modern' mail software gives a false impression
that changing the subject line starts a new thread) but I just want to
make you aware of it.

Rich

Re: musl, netdb.h rcmd inetutils?

[Jean-Marc Pigeon]

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On 04/13/2015 09:44 AM, Rich Felker wrote:
> On Mon, Apr 13, 2015 at 04:00:50AM -0400, Jean-Marc Pigeon wrote:
>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
>> 
>> Hello,
>> 
>> 
>> Trying to compile inetutils within native musl.
>> 
>> Trouble with src/rpc.c using function "rcmd"
>> 
>> Within glibc, rcmd is defined inside /usr/include/netdb.h.
>> 
>> I was not able to locate rcmd (or an alternative) within musl
>> library.
>> 
>> Could someone suggest a way to bypass this problem?
>> 
>> (rcmd is used twithin rpc, rpc - library routines for remote
>> procedure calls)
>> 
>> Thanks for help.
> 
> As an aside, could you please refrain from replying to an existing 
> thread with a new question? This is usually referred to as
> hijacking threads and it makes it much harder to manage email. I
> suspect this is unintentional (lots of 'modern' mail software gives
> a false impression that changing the subject line starts a new
> thread) but I just want to make you aware of it.
> 
> Rich
> 
Sorry, was unintentional, I'll be more careful next time, NOT
taking previous email, changing subject...

- -- 

A bientôt
===========================================================
Jean-Marc Pigeon                        E-Mail: jmp@safe.ca
SAFE Inc.                             Phone: (514) 493-4280
  Clement, 'a kiss solution' to get rid of SPAM (at last)
     Clement' Home base <"http://www.clement.safe.ca">
===========================================================
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