OpenSSH 3.7.1p2 linked libs

Darren Tucker dtucker at
Sun Feb 15 16:26:00 EST 2004

Damien Miller wrote:
> On Sat, 14 Feb 2004, Georg Schwarz wrote:
>>OpenSSH (at least on IRIX) uses -lgen in LIBS. This is only needed (and
>>thus should only be used) for linking sshd. Using -lgen elsewhere
>>unnecessarily adds code and dependencies.
>>Similarly, -lcrypto is not needed when linking scp.
> The linker should ignore unnecessary dependancies, shouldn't it?

It doesn't (on Linux anyway, I suspect it's the same on other systems).

That said, it's already tricky to get the library path and link order 
right on all supported configurations, and I would not like to see it 
made harder by maintaing different ones for different binaries.

Georg, does this cause an actual problem?  libgen is part of the base 
OS, right?  Also, there's no noticable difference in size on Linux.

$ cat hello.c
#include <stdio.h>
int main(void) { puts("Hello, world."); }
$ gcc hello.c -lcrypto
$ ldd a.out => /lib/ (0x40028000) => /lib/ (0x4011f000) => /lib/ (0x40246000) => /usr/lib/ (0x40249000)
         /lib/ => /lib/ (0x40000000)

Darren Tucker (dtucker at
GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4  37C9 C982 80C7 8FF4 FA69
     Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.

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