code support
is optional at build time (but is the default). However, processing strings as
UTF code units must be enabled explicitly at run time. The version of Unicode
in use can be discovered by running
<pre>
  pcre2test -C
</PRE>
</P>
<P>
The three libraries contain identical sets of functions, with names ending in
_8, _16, or _32, respectively (for example, <b>pcre2_compile_8()</b>). However,
by defining PCRE2_CODE_UNIT_WIDTH to be 8, 16, or 32, a program that uses just
one code unit width can be writt