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pcre_config.3
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.TH PCRE_CONFIG 3 "20 April 2014" "PCRE 8.36" .SH NAME PCRE - Perl-compatible regular expressions .SH SYNOPSIS .rs .sp .B #include <pcre.h> .PP .SM .B int pcre_config(int \fIwhat\fP, void *\fIwhere\fP); .PP .B int pcre16_config(int \fIwhat\fP, void *\fIwhere\fP); .PP .B int pcre32_config(int \fIwhat\fP, void *\fIwhere\fP); . .SH DESCRIPTION .rs .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: .sp \fIwhat\fP A code specifying what information is required \fIwhere\fP Points to where to put the data .sp The \fIwhere\fP 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: .sp 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 \eR 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 \fBmalloc()\fP 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 \fBpcre16_config()\fP PCRE_CONFIG_UTF32 Availability of UTF-32 support (1=yes 0=no); option for \fBpcre32_config()\fP PCRE_CONFIG_UTF8 Availability of UTF-8 support (1=yes 0=no); option for \fBpcre_config()\fP PCRE_CONFIG_UNICODE_PROPERTIES Availability of Unicode property support (1=yes 0=no) .sp 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 \fBpcre_config()\fP, if PCRE_CONFIG_UTF8 or PCRE_CONFIG_UTF32 is passed to \fBpcre16_config()\fP, or if PCRE_CONFIG_UTF8 or PCRE_CONFIG_UTF16 is passed to \fBpcre32_config()\fP. .P There is a complete description of the PCRE native API in the .\" HREF \fBpcreapi\fP .\" page and a description of the POSIX API in the .\" HREF \fBpcreposix\fP .\" page.