inter-library linking

[Joachim Worringen]

Greetings,

I have a problem with the following task, using libtool in 
automake-Makefiles:

"libshared" needs to be a shared library, as it will be used with 
LD_RELOAD. It builds from its own sources, but also depends on two other 
libraries that are built within the same source three: "libnoinst" and 
"libfoo". libnoinst is a static convenience library, while libfoo is 
just another shared library.

While the symbols from libnoinst are placed into libshared, the 
references to libfoo remain unresolved. This lets the linking fail when 
I set LD_PRELOAD=libshared.so: symbols from libfoo.so can not be 
resolved (although it is in the LD path, same as where libshared is placed).

Explicitely linking libshared.so to libfoo.a fails as its object files 
are not compiled as PIC (and I don't know how tell automake to do this 
anyway...).

What is the recommended solution? I figure one solution would be to 
compile the sources of libfoo again, this time into libshared.so. But 
this seems very clumsy to me. Is there a way to
- let libtool generate PIC object files for static libs
- then tell automake to link to the static version of a library?

 thanks, Joachim

--
Joachim Worringen, Software Architect, Dolphin Interconnect Solutions
phone ++49/(0)228/324 08 17 - http://www.dolphinics.com