<s>
Dld	B-Language
was	O
a	O
library	O
package	O
for	O
the	O
C	B-Language
programming	I-Language
language	I-Language
that	O
performs	O
dynamic	B-Operating_System
link	I-Operating_System
editing	I-Operating_System
.	O
</s>
<s>
Programs	O
that	O
use	O
dld	B-Language
can	O
add	O
or	O
remove	O
compiled	O
object	B-Language
code	I-Language
from	O
a	O
process	O
anytime	O
during	O
its	O
execution	O
.	O
</s>
<s>
Dld	B-Language
supported	O
various	O
Unix	B-Application
platforms	O
,	O
having	O
originally	O
been	O
developed	O
for	O
the	O
VAX	B-Device
,	O
Sun-3	B-Device
and	O
SPARCstation	B-Device
architectures	O
.	O
</s>
<s>
Its	O
authors	O
contrast	O
its	O
functionality	O
with	O
the	O
dynamic	O
linking	O
that	O
was	O
at	O
the	O
time	O
of	O
its	O
construction	O
available	O
in	O
operating	O
systems	O
such	O
as	O
SunOS	B-Operating_System
4	O
,	O
System	B-Operating_System
V.4	I-Operating_System
,	O
HP-UX	B-Application
and	O
VMS	B-Operating_System
:	O
all	O
of	O
these	O
operating	O
systems	O
had	O
shared	O
libraries	O
,	O
but	O
did	O
not	O
allow	O
programs	O
to	O
load	O
additional	O
libraries	O
after	O
startup	O
.	O
</s>
<s>
Dld	B-Language
offered	O
this	O
functionality	O
without	O
requiring	O
changes	O
to	O
the	O
OS	O
or	O
toolchain	B-General_Concept
.	O
</s>
<s>
Dld	B-Language
was	O
a	O
GNU	B-Operating_System
package	O
,	O
but	O
has	O
been	O
withdrawn	O
because	O
its	O
functionality	O
is	O
available	O
(	O
through	O
the	O
dlopen	B-Operating_System
API	O
)	O
in	O
modern	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
