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Remove real POSIX function names from the pcre2-posix library.

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Philip.Hazel
2021-04-27 08:36:47 +00:00
parent 38dbea6200
commit 080d7789eb
5 changed files with 88 additions and 56 deletions
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19
doc/pcre2posix.3
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@@ -1,4 +1,4 @@
.TH PCRE2POSIX 3 "30 January 2019" "PCRE2 10.33"
.TH PCRE2POSIX 3 "26 April 2021" "PCRE2 10.37"
.SH NAME
PCRE2 - Perl-compatible regular expressions (revised API)
.SH "SYNOPSIS"
@@ -44,11 +44,14 @@ can be accessed by adding \fB-lpcre2-posix\fP to the command for linking an
application. Because the POSIX functions call the native ones, it is also
necessary to add \fB-lpcre2-8\fP.
.P
Although they are not defined as protypes in \fBpcre2posix.h\fP, the library
does contain functions with the POSIX names \fBregcomp()\fP etc. These simply
pass their arguments to the PCRE2 functions. These functions are provided for
backwards compatibility with earlier versions of PCRE2, so that existing
programs do not have to be recompiled.
Although they were not defined as protypes in \fBpcre2posix.h\fP, releases
10.33 to 10.36 of the library contained functions with the POSIX names
\fBregcomp()\fP etc. These simply passed their arguments to the PCRE2
functions. These functions were provided for backwards compatibility with
earlier versions of PCRE2, which had only POSIX names. However, this has proved
troublesome in situations where a program links with several libraries, some of
which use PCRE2's POSIX interface while others use the real POSIX functions.
For this reason, the POSIX names have been removed since release 10.37.
.P
Calling the header file \fBpcre2posix.h\fP avoids any conflict with other POSIX
libraries. It can, of course, be renamed or aliased as \fBregex.h\fP, which is
@@ -321,6 +324,6 @@ Cambridge, England.
.rs
.sp
.nf
Last updated: 30 January 2019
Copyright (c) 1997-2019 University of Cambridge.
Last updated: 26 April 2021
Copyright (c) 1997-2021 University of Cambridge.
.fi