Re: Hiding symbols in DSOs

gga <GGarramuno@xxxxxxx> writes:

By using strip and -fvisibility=hidden, I can most symbols from my own
code under all circumstances.
....
But I am unable to hide the symbols from the licensing library, when I

Probably because these symbols were not marked hidden.

Somehow gcc seems to think the symbols need to be exposed.

You didn't tell it otherwise, why should it think differently?

I am
looking for an easy way to strip the symbols from this static library
using either strip or during the compile/linking phase.

Use linker script to localize all undesirable symbols:

$ cat junk.c
void license_foo() { }
void license_bar() { }
void client_api() { }

$ cat junk.lds
MYLIB {
local:
license*;
};

$ gcc -shared -fPIC junk.c -Wl,--version-script,junk.lds -o junk.so && strip junk.so

$ nm -D junk.so | egrep 'license|client'
0000000000000844 T client_api

$ nm junk.so
nm: junk.so: no symbols

Cheers,
--
In order to understand recursion you must first understand recursion.
Remove /-nsp/ for email.
.

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