Link error when multiple static C libraries are linked

[nitya]

Hi,

I'm trying to link multiple C static librraies (xx.a) and build a
shared librray out of that using Android.mk makefile. I'm getting a
lot of link errors because of undefined reference of functions. But
the functions are already defined in the libraries. When the order of
listing the libraries are changed, some of the link errors are gone.
Since there are many libraries, it is very difficult to order them.

How can i get rid of these errors while linking? How can i link
multiple static libraries.


Regards
Nitya

[Julien Mercay]

You have circular dependencies in your libraries. Use start-group and end-group lile this on the linker command line:

-Wl,--start-group -la -lb -Wl,--end-group

assuming you have liba.a and libb.a

Julien

--
Julien

[Bytes]

Yes, Circular dependancy is a quick fix. But its not a good
discipline.

I couldn't locate the link .... but do googling... you would
definetley find a good articles on libraries.

> Julien- Hide quoted text -
>
> - Show quoted text -

[Ash]

Try using "LOCAL_WHOLE_STATIC_LIBRARIES" for linking with multiple
static libraries. Have a look at \build\core\build-system.html


Regards,
Ash

[David Turner]

For the record, LOCAL_WHOLE_STATE_LIBRARIES is only supported by the full Android build system, not the NDK one.
Still, you should really remove these circular references.