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#.rst:
# FindLibArchive
# --------------
#
# Find libarchive library and headers
#
# The module defines the following variables:
#
# ::
#
# LibArchive_FOUND - true if libarchive was found
# LibArchive_INCLUDE_DIRS - include search path
# LibArchive_LIBRARIES - libraries to link
# LibArchive_VERSION - libarchive 3-component version number
#=============================================================================
# Copyright 2010 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.)
find_path(LibArchive_INCLUDE_DIR
NAMES archive.h
PATHS
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\LibArchive;InstallPath]/include"
)
find_library(LibArchive_LIBRARY
NAMES archive libarchive
PATHS
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\LibArchive;InstallPath]/lib"
)
mark_as_advanced(LibArchive_INCLUDE_DIR LibArchive_LIBRARY)
# Extract the version number from the header.
if(LibArchive_INCLUDE_DIR AND EXISTS "${LibArchive_INCLUDE_DIR}/archive.h")
# The version string appears in one of three known formats in the header:
# #define ARCHIVE_LIBRARY_VERSION "libarchive 2.4.12"
# #define ARCHIVE_VERSION_STRING "libarchive 2.8.4"
# #define ARCHIVE_VERSION_ONLY_STRING "3.2.0"
# Match any format.
set(_LibArchive_VERSION_REGEX "^#define[ \t]+ARCHIVE[_A-Z]+VERSION[_A-Z]*[ \t]+\"(libarchive +)?([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*\".*$")
file(STRINGS "${LibArchive_INCLUDE_DIR}/archive.h" _LibArchive_VERSION_STRING LIMIT_COUNT 1 REGEX "${_LibArchive_VERSION_REGEX}")
if(_LibArchive_VERSION_STRING)
string(REGEX REPLACE "${_LibArchive_VERSION_REGEX}" "\\2.\\3.\\4" LibArchive_VERSION "${_LibArchive_VERSION_STRING}")
endif()
unset(_LibArchive_VERSION_REGEX)
unset(_LibArchive_VERSION_STRING)
endif()
# Handle the QUIETLY and REQUIRED arguments and set LIBARCHIVE_FOUND
# to TRUE if all listed variables are TRUE.
# (Use ${CMAKE_ROOT}/Modules instead of ${CMAKE_CURRENT_LIST_DIR} because CMake
# itself includes this FindLibArchive when built with an older CMake that does
# not provide it. The older CMake also does not have CMAKE_CURRENT_LIST_DIR.)
include(${CMAKE_ROOT}/Modules/FindPackageHandleStandardArgs.cmake)
find_package_handle_standard_args(LibArchive
REQUIRED_VARS LibArchive_LIBRARY LibArchive_INCLUDE_DIR
VERSION_VAR LibArchive_VERSION
)
set(LibArchive_FOUND ${LIBARCHIVE_FOUND})
unset(LIBARCHIVE_FOUND)
if(LibArchive_FOUND)
set(LibArchive_INCLUDE_DIRS ${LibArchive_INCLUDE_DIR})
set(LibArchive_LIBRARIES ${LibArchive_LIBRARY})
endif()
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