CMake/Modules/FindEXPAT.cmake
Rolf Eike Beer 2622bc3f65 Clean up usage of if(... MATCHES regex) followed string(REGEX REPLACE regex)
The matches have already been calculated and can simply be taken from
CMAKE_MATCH_n variables. This avoids multiple compilations of the same or very
similar regular expressions.
2014-04-14 18:16:58 +02:00

67 lines
2.3 KiB
CMake

#.rst:
# FindEXPAT
# ---------
#
# Find expat
#
# Find the native EXPAT headers and libraries.
#
# ::
#
# EXPAT_INCLUDE_DIRS - where to find expat.h, etc.
# EXPAT_LIBRARIES - List of libraries when using expat.
# EXPAT_FOUND - True if expat found.
#=============================================================================
# Copyright 2006-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# Look for the header file.
find_path(EXPAT_INCLUDE_DIR NAMES expat.h)
# Look for the library.
find_library(EXPAT_LIBRARY NAMES expat libexpat)
if (EXPAT_INCLUDE_DIR AND EXISTS "${EXPAT_INCLUDE_DIR}/expat.h")
file(STRINGS "${EXPAT_INCLUDE_DIR}/expat.h" expat_version_str
REGEX "^#[\t ]*define[\t ]+XML_(MAJOR|MINOR|MICRO)_VERSION[\t ]+[0-9]+$")
unset(EXPAT_VERSION_STRING)
foreach(VPART MAJOR MINOR MICRO)
foreach(VLINE ${expat_version_str})
if(VLINE MATCHES "^#[\t ]*define[\t ]+XML_${VPART}_VERSION[\t ]+([0-9]+)$")
set(EXPAT_VERSION_PART "${CMAKE_MATCH_1}")
if(EXPAT_VERSION_STRING)
set(EXPAT_VERSION_STRING "${EXPAT_VERSION_STRING}.${EXPAT_VERSION_PART}")
else()
set(EXPAT_VERSION_STRING "${EXPAT_VERSION_PART}")
endif()
endif()
endforeach()
endforeach()
endif ()
# handle the QUIETLY and REQUIRED arguments and set EXPAT_FOUND to TRUE if
# all listed variables are TRUE
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(EXPAT
REQUIRED_VARS EXPAT_LIBRARY EXPAT_INCLUDE_DIR
VERSION_VAR EXPAT_VERSION_STRING)
# Copy the results to the output variables.
if(EXPAT_FOUND)
set(EXPAT_LIBRARIES ${EXPAT_LIBRARY})
set(EXPAT_INCLUDE_DIRS ${EXPAT_INCLUDE_DIR})
endif()
mark_as_advanced(EXPAT_INCLUDE_DIR EXPAT_LIBRARY)