GNU bug report logs - #11921
libtool --mode=link with indirectly involved libraries

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Package: libtool; Reported by: Дилян Палаузов <dilyan.palauzov@HIDDEN>; dated Thu, 12 Jul 2012 11:27:02 UTC; Maintainer for libtool is bug-libtool@HIDDEN.

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Date: Mon, 23 Jul 2012 22:01:22 +0300
From: Roumen Petrov <bugtrack@HIDDEN>
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Subject: Re: bug#11921: libtool --mode=link with indirectly involved libraries
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Дилян Палаузов wrote:
> Hello,
>
> I use libtool-2.4.2.  In the Makefile.am I have
>
> lib_LTLIBRARIES = libA.a libB.la
> libA_la_SOURCES = ...
> libB_la_SOURCES = ...
> libB_la_LIBADD = libA.la
> bin_PROGRAMS = c
> c_SOURCES = ...
> c_LDADD = libB.la
>
> This creates a file libB.la which lists libA.la (with its full path) 
> under dependency_libs .
>
> Executing "make" leads to
>
> libtool --tag=CC --mode=link gcc -o c libB.la
>
> And now, on my system this expands (correctly) to
> libtool: link: gcc -o c /.libs/libB.so /.libs/libA.so
>
> but on another system it resolves to
> libtool: link: gcc -o c /.libs/libB.so
> -> ERROR
> ld: c.o: undefined reference to symbol 'A'
> ld: note: 'A' is defined in DSO libA.so.0 so try adding it to the 
> linker command line
> libA.so.0: could not read symbols: Invalid operation
> collect2: ld returned 1 exit status
>
Look like debian based distribution.


> My question is:
>
> Why is libB.la sometimes expanded by libtool --mode=link v2.4.2 to 
> "libB.so libA.so" and sometimes only to "libB.so"?

https://bugs.launchpad.net/ubuntu/+source/libtool/+bug/258491 ?

>
> Thanks very much in advance for your answer
>   Дилян

Roumen





Information forwarded to bug-libtool@HIDDEN:
bug#11921; Package libtool. Full text available.

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Subject: link_all_deplibs=no
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Hello,

the problem is caused by link_all_deplibs=no and the attached package 
demonstrates the configuration causing the problem.

Any idea how to compile src/c.c , when link_all_deplibs is for some 
reason set by the system to no?

Със здраве
   Дилян

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Information forwarded to bug-libtool@HIDDEN:
bug#11921; Package libtool. Full text available.

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Hello,

I use libtool-2.4.2.  In the Makefile.am I have

lib_LTLIBRARIES = libA.a libB.la
libA_la_SOURCES = ...
libB_la_SOURCES = ...
libB_la_LIBADD = libA.la
bin_PROGRAMS = c
c_SOURCES = ...
c_LDADD = libB.la

This creates a file libB.la which lists libA.la (with its full path) 
under dependency_libs .

Executing "make" leads to

libtool --tag=CC --mode=link gcc -o c libB.la

And now, on my system this expands (correctly) to
libtool: link: gcc -o c /.libs/libB.so /.libs/libA.so

but on another system it resolves to
libtool: link: gcc -o c /.libs/libB.so
-> ERROR
ld: c.o: undefined reference to symbol 'A'
ld: note: 'A' is defined in DSO libA.so.0 so try adding it to the linker 
command line
libA.so.0: could not read symbols: Invalid operation
collect2: ld returned 1 exit status

My question is:

Why is libB.la sometimes expanded by libtool --mode=link v2.4.2 to 
"libB.so libA.so" and sometimes only to "libB.so"?

Thanks very much in advance for your answer
   Дилян


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Acknowledgement sent to Дилян Палаузов <dilyan.palauzov@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-libtool@HIDDEN. Full text available.
Report forwarded to bug-libtool@HIDDEN:
bug#11921; Package libtool. Full text available.
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