<s>
musl	B-Language
is	O
a	O
C	B-Language
standard	I-Language
library	I-Language
intended	O
for	O
operating	B-General_Concept
systems	I-General_Concept
based	O
on	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
,	O
released	O
under	O
the	B-License
MIT	I-License
License	I-License
.	O
</s>
<s>
It	O
was	O
developed	O
by	O
Rich	O
Felker	O
with	O
the	O
goal	O
to	O
write	O
a	O
clean	O
,	O
efficient	O
,	O
and	O
standards-conformant	O
libc	B-Language
implementation	O
.	O
</s>
<s>
musl	B-Language
was	O
designed	O
from	O
scratch	O
to	O
allow	O
efficient	O
static	B-Library
linking	I-Library
and	O
to	O
have	O
realtime-quality	O
robustness	O
by	O
avoiding	O
race	B-Operating_System
conditions	I-Operating_System
,	O
internal	O
failures	O
on	O
resource	O
exhaustion	O
and	O
various	O
other	O
bad	O
worst-case	O
behaviors	O
present	O
in	O
existing	O
implementations	O
.	O
</s>
<s>
The	O
dynamic	O
runtime	O
is	O
a	O
single	O
file	O
with	O
stable	O
ABI	B-Operating_System
allowing	O
race-free	O
updates	O
and	O
the	O
static	B-Library
linking	I-Library
support	O
allows	O
an	O
application	O
to	O
be	O
deployed	O
as	O
a	O
single	O
portable	O
binary	O
without	O
significant	O
size	O
overhead	O
.	O
</s>
<s>
It	O
also	O
implements	O
most	O
of	O
the	O
widely	O
used	O
non-standard	O
Linux	B-Application
,	O
BSD	B-Operating_System
,	O
and	O
glibc	B-Language
functions	O
.	O
</s>
<s>
There	O
is	O
partial	O
ABI	B-Operating_System
compatibility	O
with	O
the	O
part	O
of	O
glibc	B-Language
required	O
by	O
Linux	B-Application
Standard	I-Application
Base	I-Application
.	O
</s>
<s>
Version	O
1.2.0	O
has	O
support	O
for	O
(	O
no	O
longer	O
current	O
)	O
Unicode	O
12.1.0	O
(	O
while	O
still	O
having	O
full	O
UTF-8	O
support	O
,	O
more	O
conformant/strict	O
than	O
glibc	B-Language
)	O
,	O
and	O
version	O
1.2.1	O
"	O
features	O
the	O
new	O
'	O
mallocng	O
 '	O
malloc	B-Language
implementation	O
,	O
replacing	O
musl	B-Language
's	O
original	O
dlmalloc-like	O
allocator	O
that	O
suffered	O
from	O
fundamental	O
design	O
problems.	O
"	O
</s>
<s>
Some	O
Linux	B-Application
distributions	I-Application
that	O
can	O
use	O
musl	B-Language
as	O
the	O
standard	B-Language
C	I-Language
library	I-Language
include	O
Alpine	O
Linux	B-Application
,	O
Dragora	O
3	O
,	O
Gentoo	B-Application
Linux	I-Application
,	O
OpenWrt	B-Application
,	O
Sabotage	O
,	O
Morpheus	O
Linux	B-Application
and	O
Void	O
Linux	B-Application
.	O
</s>
<s>
The	O
seL4	O
microkernel	O
ships	O
with	O
musl	B-Language
.	O
</s>
<s>
For	O
binaries	O
that	O
have	O
been	O
linked	O
against	O
glibc	B-Language
,	O
gcompat	O
can	O
be	O
used	O
to	O
execute	O
them	O
on	O
musl-based	O
distros	O
.	O
</s>
