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    1 <html>
    2 <head>
    3 <title>pcre_config specification</title>
    4 </head>
    5 <body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
    6 <h1>pcre_config man page</h1>
    7 <p>
    8 Return to the <a href="index.html">PCRE index page</a>.
    9 </p>
   10 <p>
   11 This page is part of the PCRE HTML documentation. It was generated automatically
   12 from the original man page. If there is any nonsense in it, please consult the
   13 man page, in case the conversion went wrong.
   14 <br>
   15 <br><b>
   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 <P>
   25 <b>int pcre16_config(int <i>what</i>, void *<i>where</i>);</b>
   26 </P>
   27 <P>
   28 <b>int pcre32_config(int <i>what</i>, void *<i>where</i>);</b>
   29 </P>
   30 <br><b>
   32 </b><br>
   33 <P>
   34 This function makes it possible for a client program to find out which optional
   35 features are available in the version of the PCRE library it is using. The
   36 arguments are as follows:
   37 <pre>
   38   <i>what</i>     A code specifying what information is required
   39   <i>where</i>    Points to where to put the data
   40 </pre>
   41 The <i>where</i> argument must point to an integer variable, except for
   43 PCRE_CONFIG_PARENS_LIMIT, when it must point to an unsigned long integer,
   44 and for PCRE_CONFIG_JITTARGET, when it must point to a const char*.
   45 The available codes are:
   46 <pre>
   47   PCRE_CONFIG_JIT           Availability of just-in-time compiler
   48                               support (1=yes 0=no)
   49   PCRE_CONFIG_JITTARGET     String containing information about the
   50                               target architecture for the JIT compiler,
   51                               or NULL if there is no JIT support
   52   PCRE_CONFIG_LINK_SIZE     Internal link size: 2, 3, or 4
   53   PCRE_CONFIG_PARENS_LIMIT  Parentheses nesting limit
   54   PCRE_CONFIG_MATCH_LIMIT   Internal resource limit
   56                             Internal recursion depth limit
   57   PCRE_CONFIG_NEWLINE       Value of the default newline sequence:
   58                                 13 (0x000d)    for CR
   59                                 10 (0x000a)    for LF
   60                               3338 (0x0d0a)    for CRLF
   61                                 -2             for ANYCRLF
   62                                 -1             for ANY
   63   PCRE_CONFIG_BSR           Indicates what \R matches by default:
   64                                  0             all Unicode line endings
   65                                  1             CR, LF, or CRLF only
   67                             Threshold of return slots, above which
   68                               <b>malloc()</b> is used by the POSIX API
   69   PCRE_CONFIG_STACKRECURSE  Recursion implementation (1=stack 0=heap)
   70   PCRE_CONFIG_UTF16         Availability of UTF-16 support (1=yes
   71                                0=no); option for <b>pcre16_config()</b>
   72   PCRE_CONFIG_UTF32         Availability of UTF-32 support (1=yes
   73                                0=no); option for <b>pcre32_config()</b>
   74   PCRE_CONFIG_UTF8          Availability of UTF-8 support (1=yes 0=no);
   75                               option for <b>pcre_config()</b>
   77                             Availability of Unicode property support
   78                               (1=yes 0=no)
   79 </pre>
   80 The function yields 0 on success or PCRE_ERROR_BADOPTION otherwise. That error
   81 is also given if PCRE_CONFIG_UTF16 or PCRE_CONFIG_UTF32 is passed to
   82 <b>pcre_config()</b>, if PCRE_CONFIG_UTF8 or PCRE_CONFIG_UTF32 is passed to
   83 <b>pcre16_config()</b>, or if PCRE_CONFIG_UTF8 or PCRE_CONFIG_UTF16 is passed to
   84 <b>pcre32_config()</b>.
   85 </P>
   86 <P>
   87 There is a complete description of the PCRE native API in the
   88 <a href="pcreapi.html"><b>pcreapi</b></a>
   89 page and a description of the POSIX API in the
   90 <a href="pcreposix.html"><b>pcreposix</b></a>
   91 page.
   92 <p>
   93 Return to the <a href="index.html">PCRE index page</a>.
   94 </p>