<s>
GNU	B-Operating_System
libiberty	B-Application
is	O
a	O
software	B-Library
library	I-Library
with	O
a	O
collection	O
of	O
subroutines	O
used	O
by	O
various	O
GNU	B-Operating_System
programs	B-Application
.	O
</s>
<s>
The	O
library	O
is	O
now	O
a	O
decommissioned	O
GNU	B-Operating_System
package	O
.	O
</s>
<s>
It	O
was	O
originally	O
intended	O
to	O
be	O
a	O
sort	O
of	O
standard	O
cross-platform	B-Operating_System
library	O
,	O
thus	O
enabling	O
it	O
to	O
be	O
linked	O
(	O
using	O
the	O
usual	O
Unix	B-Application
library	O
form	O
)	O
by	O
just	O
passing	O
"	O
-liberty	O
"	O
to	O
the	O
compiler	O
.	O
</s>
<s>
However	O
,	O
the	O
development	O
of	O
standards	O
for	O
C	B-Language
and	O
POSIX	O
took	O
away	O
some	O
of	O
the	O
impetus	O
for	O
this	O
,	O
and	O
libiberty	B-Application
came	O
to	O
be	O
used	O
primarily	O
as	O
a	O
support	O
library	O
for	O
the	O
GNU	B-Application
toolchain	I-Application
.	O
</s>
<s>
It	O
still	O
contains	O
a	O
minimal	O
set	O
of	O
functions	O
that	O
are	O
either	O
GNU	B-Operating_System
extensions	O
or	O
occasionally	O
unimplemented	O
parts	O
of	O
the	O
standard	O
.	O
</s>
<s>
Copies	O
of	O
libiberty	B-Application
are	O
distributed	O
with	O
gcc	B-Application
,	O
gdb	B-Language
,	O
and	O
the	O
binutils	B-Application
.	O
</s>
<s>
libiberty	B-Application
is	O
not	O
otherwise	O
versioned	O
or	O
released	O
separately	O
.	O
</s>
<s>
One	O
important	O
piece	O
of	O
libiberty	B-Application
functionality	O
is	O
a	O
demangler	B-Language
for	O
C++	B-Language
and	O
D	B-Application
,	O
included	O
so	O
that	O
it	O
is	O
available	O
to	O
both	O
binutils	B-Application
and	O
GDB	B-Language
.	O
</s>
<s>
The	O
name	O
is	O
a	O
pun	B-Application
or	O
word	O
play	O
on	O
the	O
word	O
"	O
liberty	O
"	O
.	O
</s>
<s>
On	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
,	O
library	O
files	O
are	O
always	O
named	O
"	O
lib	O
"	O
+	O
"	O
the	O
name	O
of	O
the	O
library.	O
"	O
</s>
<s>
But	O
when	O
they	O
are	O
linked	O
to	O
with	O
a	O
C	B-Language
compiler	O
command	O
(	O
cc	O
,	O
gcc	B-Application
,	O
etc	O
.	O
</s>
<s>
)	O
,	O
the	O
command	B-Application
line	I-Application
flag	O
specifying	O
the	O
library	O
is	O
-l	O
followed	O
by	O
the	O
part	O
of	O
the	O
library	O
name	O
after	O
"	O
lib	O
"	O
.	O
</s>
<s>
In	O
libiberty	B-Application
's	O
case	O
it	O
therefore	O
becomes	O
-liberty	O
.	O
</s>
