[systemd-devel] Please proof-read: systemd’s dependencies and installation footprint

[Cristian Rodríguez]

El 10/06/13 15:25, Kay Sievers escribió:
> On Mon, Jun 10, 2013 at 7:26 PM, Cristian Rodríguez
> <crrodriguez at opensuse.org> wrote:
>> El 10/06/13 06:17, Lennart Poettering escribió:
>
>>> Hmm, you list that our daemons would require pcre? That's weird, we
>>> don't really do that. That sounds like a bug,
>
>> Sounds more like something in the dependency chain is not linked with
>> as-needed causing a mess.
>
> Seems selinux does add that dependency, and which cannot be eliminated
> with as-needed as soon as any selinux things are used:
>
>    $ echo 'int main(int argc, char *argv[]) { return 0; }' > main.c;
> gcc main.c -o main -lselinux; ldd main
> 	linux-vdso.so.1 =>  (0x00007ffff33fe000)
> 	libselinux.so.1 => /lib64/libselinux.so.1 (0x00007fd2232b1000)
> 	libc.so.6 => /lib64/libc.so.6 (0x00007fd222ef1000)
> 	libdl.so.2 => /lib64/libdl.so.2 (0x00007fd222cec000)
> 	libpcre.so.1 => /lib64/libpcre.so.1 (0x00007fd222a88000)
> 	libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fd22286c000)
> 	/lib64/ld-linux-x86-64.so.2 (0x00007fd2234ef000)
>
> Kay

hrmmm..

echo 'int main(int argc, char *argv[]) { return 0; }' > main.c;
  gcc -Wl,--as-needed main.c -o main -lselinux; ldd main
         linux-vdso.so.1 (0x00007fff3f9fe000)
         libc.so.6 => /lib64/libc.so.6 (0x00007f6b3364a000)
         /lib64/ld-linux-x86-64.so.2 (0x00007f6b339f7000)

no linkage with selinux, as expected since our little main.c does not 
use selinux.