<s>
In	O
software	O
,	O
a	O
toolchain	B-General_Concept
is	O
a	O
set	O
of	O
programming	B-Application
tools	I-Application
that	O
is	O
used	O
to	O
perform	O
a	O
complex	O
software	O
development	O
task	O
or	O
to	O
create	O
a	O
software	O
product	O
,	O
which	O
is	O
typically	O
another	O
computer	O
program	O
or	O
a	O
set	O
of	O
related	O
programs	O
.	O
</s>
<s>
In	O
general	O
,	O
the	O
tools	O
forming	O
a	O
toolchain	B-General_Concept
are	O
executed	O
consecutively	O
so	O
the	O
output	O
or	O
resulting	O
environment	O
state	O
of	O
each	O
tool	O
becomes	O
the	O
input	O
or	O
starting	O
environment	O
for	O
the	O
next	O
one	O
,	O
but	O
the	O
term	O
is	O
also	O
used	O
when	O
referring	O
to	O
a	O
set	O
of	O
related	O
tools	O
that	O
are	O
not	O
necessarily	O
executed	O
consecutively	O
.	O
</s>
<s>
A	O
simple	O
software	O
development	O
toolchain	B-General_Concept
may	O
consist	O
of	O
a	O
compiler	B-Language
and	O
linker	B-Application
(	O
which	O
transform	O
the	O
source	O
code	O
into	O
an	O
executable	B-Application
program	I-Application
)	O
,	O
libraries	B-Library
(	O
which	O
provide	O
interfaces	O
to	O
the	O
operating	B-General_Concept
system	I-General_Concept
)	O
,	O
and	O
a	O
debugger	B-Application
(	O
which	O
is	O
used	O
to	O
test	O
and	O
debug	O
created	O
programs	O
)	O
.	O
</s>
