NAME

       PCRE2 - Perl-compatible regular expressions (revised API)

SYNOPSIS

       #include <pcre2.h>

       int pcre2_config(uint32_t what, void *where);

DESCRIPTION

       This function makes it possible for a client program to find out which optional features are available in
       the version of the PCRE2 library it is using. The arguments are as follows:

         what     A code specifying what information is required
         where    Points to where to put the information

       If  where  is  NULL, the function returns the amount of memory needed for the requested information. When
       the information is a string, the value is in code units; for other types of data it is in bytes.

       If where is not NULL, for PCRE2_CONFIG_JITTARGET, PCRE2_CONFIG_UNICODE_VERSION, and  PCRE2_CONFIG_VERSION
       it must point to a buffer that is large enough to hold the string. For all other codes it must point to a
       uint32_t integer variable. The available codes are:

         PCRE2_CONFIG_BSR             Indicates what \R matches by default:
                                        PCRE2_BSR_UNICODE
                                        PCRE2_BSR_ANYCRLF
         PCRE2_CONFIG_JIT             Availability of just-in-time compiler
                                       support (1=yes 0=no)
         PCRE2_CONFIG_JITTARGET       Information about the target archi-
                                        tecture for the JIT compiler
         PCRE2_CONFIG_LINKSIZE        Configured internal link size (2, 3, 4)
         PCRE2_CONFIG_MATCHLIMIT      Default internal resource limit
         PCRE2_CONFIG_NEWLINE         Code for the default newline sequence:
                                        PCRE2_NEWLINE_CR
                                        PCRE2_NEWLINE_LF
                                        PCRE2_NEWLINE_CRLF
                                        PCRE2_NEWLINE_ANY
                                        PCRE2_NEWLINE_ANYCRLF
         PCRE2_CONFIG_PARENSLIMIT     Default parentheses nesting limit
         PCRE2_CONFIG_RECURSIONLIMIT  Internal recursion depth limit
         PCRE2_CONFIG_STACKRECURSE    Recursion implementation (1=stack
                                        0=heap)
         PCRE2_CONFIG_UNICODE         Availability of Unicode support (1=yes
                                        0=no)
         PCRE2_CONFIG_UNICODE_VERSION The Unicode version (a string)
         PCRE2_CONFIG_VERSION         The PCRE2 version (a string)

       The  function  yields  a  non-negative  value  on  success  or  the  negative value PCRE2_ERROR_BADOPTION
       otherwise. This is also the result for the PCRE2_CONFIG_JITTARGET code if JIT support is  not  available.
       When a string is requested, the function returns the number of code units used, including the terminating
       zero.

       There  is  a  complete  description of the PCRE2 native API in the pcre2api page and a description of the
       POSIX API in the pcre2posix page.

PCRE2 10.0                                        20 April 2014                                  PCRE2_CONFIG(3)