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2<head>
3<title>pcre_config specification</title>
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6<h1>pcre_config man page</h1>
7<p>
8Return to the <a href="index.html">PCRE index page</a>.
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10<p>
11This page is part of the PCRE HTML documentation. It was generated automatically
12from the original man page. If there is any nonsense in it, please consult the
13man page, in case the conversion went wrong.
14<br>
15<br><b>
16SYNOPSIS
17</b><br>
18<P>
19<b>#include &#60;pcre.h&#62;</b>
20</P>
21<P>
22<b>int pcre_config(int <i>what</i>, void *<i>where</i>);</b>
23</P>
24<br><b>
25DESCRIPTION
26</b><br>
27<P>
28This function makes it possible for a client program to find out which optional
29features are available in the version of the PCRE library it is using. Its
30arguments are as follows:
31<pre>
32  <i>what</i>     A code specifying what information is required
33  <i>where</i>    Points to where to put the data
34</pre>
35The available codes are:
36<pre>
37  PCRE_CONFIG_LINK_SIZE     Internal link size: 2, 3, or 4
38  PCRE_CONFIG_MATCH_LIMIT   Internal resource limit
39  PCRE_CONFIG_MATCH_LIMIT_RECURSION
40                            Internal recursion depth limit
41  PCRE_CONFIG_NEWLINE       Value of the default newline sequence:
42                                13 (0x000d)    for CR
43                                10 (0x000a)    for LF
44                              3338 (0x0d0a)    for CRLF
45                                -2             for ANYCRLF
46                                -1             for ANY
47  PCRE_CONFIG_BSR           Indicates what \R matches by default:
48                                 0             all Unicode line endings
49                                 1             CR, LF, or CRLF only
50  PCRE_CONFIG_POSIX_MALLOC_THRESHOLD
51                            Threshold of return slots, above
52                              which <b>malloc()</b> is used by
53                              the POSIX API
54  PCRE_CONFIG_STACKRECURSE  Recursion implementation (1=stack 0=heap)
55  PCRE_CONFIG_UTF8          Availability of UTF-8 support (1=yes 0=no)
56  PCRE_CONFIG_UNICODE_PROPERTIES
57                            Availability of Unicode property support
58                              (1=yes 0=no)
59</pre>
60The function yields 0 on success or PCRE_ERROR_BADOPTION otherwise.
61</P>
62<P>
63There is a complete description of the PCRE native API in the
64<a href="pcreapi.html"><b>pcreapi</b></a>
65page and a description of the POSIX API in the
66<a href="pcreposix.html"><b>pcreposix</b></a>
67page.
68<p>
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71