r3/cmake/Modules/FindPCRE2.cmake
Björn Svensson c105117b40
Use PCRE2 instead of PCRE (#153)
PCRE is now at end of life and is no longer actively maintained.
Lift the dependency to the next major version, i.e. PCRE2.

Implementation notes:
- Removed the pcre study option since:
  "The new API ... was simplified by abolishing the separate "study" optimizing
  function; in PCRE2, patterns are automatically optimized where possible."
- If asprintf() fails the content of the 'strp' variable is undefined.
  Lets check the return value and return NULL upon error.
- Pattern and subject can straightforwardly be cast to PCRE2_SPTR since we
  only work with 8-bit code units.
2023-10-23 12:38:24 +02:00

37 lines
1.4 KiB
CMake

# Copyright (C) 2007-2009 LuaDist.
# Created by Peter Kapec <kapecp@gmail.com>
# Redistribution and use of this file is allowed according to the terms of the MIT license.
# For details see the COPYRIGHT file distributed with LuaDist.
# Note:
# Searching headers and libraries is very simple and is NOT as powerful as scripts
# distributed with CMake, because LuaDist defines directories to search for.
# Everyone is encouraged to contact the author with improvements. Maybe this file
# becomes part of CMake distribution sometimes.
# - Find pcre2
# Find the native PCRE2 headers and libraries.
#
# PCRE2_INCLUDE_DIRS - where to find pcre2.h, etc.
# PCRE2_LIBRARIES - List of libraries when using pcre2.
# PCRE2_FOUND - True if pcre2 found.
# Look for the header file.
FIND_PATH(PCRE2_INCLUDE_DIR NAMES pcre2.h)
# Look for the library.
FIND_LIBRARY(PCRE2_LIBRARY NAMES pcre2-8)
# Handle the QUIETLY and REQUIRED arguments and set PCRE2_FOUND to TRUE if all listed variables are TRUE.
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(PCRE2 DEFAULT_MSG PCRE2_LIBRARY PCRE2_INCLUDE_DIR)
# Copy the results to the output variables.
IF(PCRE2_FOUND)
SET(PCRE2_LIBRARIES ${PCRE2_LIBRARY})
SET(PCRE2_INCLUDE_DIRS ${PCRE2_INCLUDE_DIR})
ELSE(PCRE2_FOUND)
SET(PCRE2_LIBRARIES)
SET(PCRE2_INCLUDE_DIRS)
ENDIF(PCRE2_FOUND)
MARK_AS_ADVANCED(PCRE2_INCLUDE_DIRS PCRE2_LIBRARIES)