how to tell what files are in a shared object (.so)

doughyi8u · 07-17-2012, 07:43 PM

Code:

ar -t archivename.a

will list all the object files in said archive. Is there a way to do this for shared objects?

Thanks for any help.

cliffordw · 07-18-2012, 01:21 AM

My understanding is that a shared object (.so file) is a single file, and not an archive of files like libraries (.a files), which means there are no other files within a shared object.

If you're after a list of the symbols from the shared object file, you can try running "nm -D file.so", for example:

Code:

nm -D /usr/lib/libssl3.so

gchen · 07-18-2012, 05:58 AM

Quote:

Originally Posted by cliffordw

My understanding is that a shared object (.so file) is a single file, and not an archive of files like libraries (.a files), which means there are no other files within a shared object.

If you're after a list of the symbols from the shared object file, you can try running "nm -D file.so", for example:

Code:

nm -D /usr/lib/libssl3.so

1) just like what cliffordw said.

2) and for .so, also can use objdump to get more informations.

3) for .a is only for linker use (it is just the group of .o which is intermedia binary file). .so is loaded by OS when a process need (it is an executable binary).

: )