1# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
2# file Copyright.txt or https://cmake.org/licensing for details.
3
4#[=======================================================================[.rst:
5FindLibArchive
6--------------
7
8Find libarchive library and headers.
9Libarchive is multi-format archive and compression library.
10
11The module defines the following variables:
12
13::
14
15  LibArchive_FOUND        - true if libarchive was found
16  LibArchive_INCLUDE_DIRS - include search path
17  LibArchive_LIBRARIES    - libraries to link
18  LibArchive_VERSION      - libarchive 3-component version number
19
20The module defines the following ``IMPORTED`` targets:
21
22::
23
24  LibArchive::LibArchive  - target for linking against libarchive
25
26.. versionadded:: 3.6
27  Support for new libarchive 3.2 version string format.
28
29#]=======================================================================]
30
31find_path(LibArchive_INCLUDE_DIR
32  NAMES archive.h
33  PATHS
34  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\LibArchive;InstallPath]/include"
35  DOC "libarchive include directory"
36  )
37
38find_library(LibArchive_LIBRARY
39  NAMES archive libarchive
40  PATHS
41  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\LibArchive;InstallPath]/lib"
42  DOC "libarchive library"
43  )
44
45mark_as_advanced(LibArchive_INCLUDE_DIR LibArchive_LIBRARY)
46
47# Extract the version number from the header.
48if(LibArchive_INCLUDE_DIR AND EXISTS "${LibArchive_INCLUDE_DIR}/archive.h")
49  # The version string appears in one of three known formats in the header:
50  #  #define ARCHIVE_LIBRARY_VERSION "libarchive 2.4.12"
51  #  #define ARCHIVE_VERSION_STRING "libarchive 2.8.4"
52  #  #define ARCHIVE_VERSION_ONLY_STRING "3.2.0"
53  # Match any format.
54  set(_LibArchive_VERSION_REGEX "^#define[ \t]+ARCHIVE[_A-Z]+VERSION[_A-Z]*[ \t]+\"(libarchive +)?([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*\".*$")
55  file(STRINGS "${LibArchive_INCLUDE_DIR}/archive.h" _LibArchive_VERSION_STRING LIMIT_COUNT 1 REGEX "${_LibArchive_VERSION_REGEX}")
56  if(_LibArchive_VERSION_STRING)
57    string(REGEX REPLACE "${_LibArchive_VERSION_REGEX}" "\\2.\\3.\\4" LibArchive_VERSION "${_LibArchive_VERSION_STRING}")
58  endif()
59  unset(_LibArchive_VERSION_REGEX)
60  unset(_LibArchive_VERSION_STRING)
61endif()
62
63include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
64find_package_handle_standard_args(LibArchive
65                                  REQUIRED_VARS LibArchive_LIBRARY LibArchive_INCLUDE_DIR
66                                  VERSION_VAR LibArchive_VERSION
67  )
68unset(LIBARCHIVE_FOUND)
69
70if(LibArchive_FOUND)
71  set(LibArchive_INCLUDE_DIRS ${LibArchive_INCLUDE_DIR})
72  set(LibArchive_LIBRARIES    ${LibArchive_LIBRARY})
73
74  if (NOT TARGET LibArchive::LibArchive)
75    add_library(LibArchive::LibArchive UNKNOWN IMPORTED)
76    set_target_properties(LibArchive::LibArchive PROPERTIES
77      IMPORTED_LOCATION "${LibArchive_LIBRARY}"
78      INTERFACE_INCLUDE_DIRECTORIES "${LibArchive_INCLUDE_DIR}")
79  endif ()
80endif()
81