PCRE_CONFIG - Online Linux Manual PageSection : 3
Updated : 20 April 2014
Source : PCRE 8.36

NAMEPCRE - Perl-compatible regular expressions

SYNOPSIS\.sp #include <pcre.h> int pcre_config(int what, void *where); int pcre16_config(int what, void *where); int pcre32_config(int what, void *where);

DESCRIPTION\.sp This function makes it possible for a client program to find out which optional features are available in the version of the PCRE library it is using. The arguments are as follows:
  what A code specifying what information is required
  
where Points to where to put the data The where argument must point to an integer variable, except for PCRE_CONFIG_MATCH_LIMIT, PCRE_CONFIG_MATCH_LIMIT_RECURSION, and PCRE_CONFIG_PARENS_LIMIT, when it must point to an unsigned long integer, and for PCRE_CONFIG_JITTARGET, when it must point to a const char*. The available codes are:
  PCRE_CONFIG_JIT Availability of just-in-time compiler
                              support (1=yes 0=no)
  PCRE_CONFIG_JITTARGET String containing information about the
                              target architecture for the JIT compiler,
                              or NULL if there is no JIT support
  PCRE_CONFIG_LINK_SIZE Internal link size: 2, 3, or 4
  PCRE_CONFIG_PARENS_LIMIT Parentheses nesting limit
  PCRE_CONFIG_MATCH_LIMIT Internal resource limit
  PCRE_CONFIG_MATCH_LIMIT_RECURSION
                            Internal recursion depth limit
  PCRE_CONFIG_NEWLINE Value of the default newline sequence:
                                13 (0x000d) for CR
                                10 (0x000a) for LF
                              3338 (0x0d0a) for CRLF
                                -2 for ANYCRLF
                                -1 for ANY
  PCRE_CONFIG_BSR Indicates what \R matches by default:
                                 0 all Unicode line endings
                                 1 CR, LF, or CRLF only
  PCRE_CONFIG_POSIX_MALLOC_THRESHOLD
                            Threshold of return slots, above which
                              
malloc() is used by the POSIX API
  PCRE_CONFIG_STACKRECURSE Recursion implementation (1=stack 0=heap)
  PCRE_CONFIG_UTF16 Availability of UTF-16 support (1=yes
                               0=no); option for
pcre16_config()
  PCRE_CONFIG_UTF32 Availability of UTF-32 support (1=yes
                               0=no); option for
pcre32_config()
  PCRE_CONFIG_UTF8 Availability of UTF-8 support (1=yes 0=no);
                              option for()

  PCRE_CONFIG_UNICODE_PROPERTIES
                            Availability of Unicode property support
                              (1=yes 0=no) The function yields 0 on success or PCRE_ERROR_BADOPTION otherwise. That error is also given if PCRE_CONFIG_UTF16 or PCRE_CONFIG_UTF32 is passed to
pcre_config(), if PCRE_CONFIG_UTF8 or PCRE_CONFIG_UTF32 is passed to pcre16_config(), or if PCRE_CONFIG_UTF8 or PCRE_CONFIG_UTF16 is passed to pcre32_config(). There is a complete description of the PCRE native API in the pcreapi page and a description of the POSIX API in the pcreposix page.
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