Re: Shared Library On Solaris 10 using g++ 3.4.3
On Nov 13, 7:33 pm, Bala <R.Balaji.I...@gmail.com> wrote:
On Nov 13, 4:56 am, James Kanze <james.ka...@gmail.com> wrote:
On Nov 13, 12:02 am, Bala <R.Balaji.I...@gmail.com> wrote:
On Nov 9, 5:01 am, James Kanze <james.ka...@gmail.com> wrote:
On Nov 8, 8:50 pm, Bala <R.Balaji.I...@gmail.com> wrote:
[...]
This is really getting off topic, but what does dlerr() say?
[...]
Haha. I tried that already but doesnt seem to work. I looked at
dlerror() and it says it couldnt find a referenced symbol.
After dlopen()?
the name of the symbol is mangled. And since the static
libraries that i am using are external, i dont have the source
code to find out where and how its declared.
nm libxxx.so | egrep symbol
can be useful in such cases. There is also c++filt, to
demangle. You might try demangling, and greping for the
demangled name in the libs. Just in case the symbol is actually
in C code, but the declaration you pulled in didn't have the
``extern "C"'' linkage specification.
Another possibility is that the library was compiled with a
different compiler, and so mangles differently. (Sun CC
supports at least two different conventions: see the -compat=4
option. Or one of the libraries was compiled with g++; this
would explain why there was no problem with g++.)
I just linked the static libraries while creating the shared
library using the above command. Not sure though which way to
go ahead :)
It sounds like you're in the Unix version of DLL-hell:-). The
worst thing about it is that if you get it to work on your
platform, it still might not work when deployed, because one of
the shared objects it depends on doesn't have the same version.
In my experience, you should make very, very sparing use of
shared objects, limiting their use to cases where it actually
has some necessary advantage.
--
James Kanze (GABI Software) email:james.kanze@gmail.com
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