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745b56f58c
No need to explain this over and over again. While at it, do some other minor cleanups to whitespace and comments (i.e. delete them).
60 lines
2.1 KiB
CMake
60 lines
2.1 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#.rst:
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# FindLibArchive
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# --------------
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#
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# Find libarchive library and headers
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#
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# The module defines the following variables:
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#
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# ::
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#
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# LibArchive_FOUND - true if libarchive was found
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# LibArchive_INCLUDE_DIRS - include search path
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# LibArchive_LIBRARIES - libraries to link
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# LibArchive_VERSION - libarchive 3-component version number
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find_path(LibArchive_INCLUDE_DIR
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NAMES archive.h
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PATHS
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"[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\LibArchive;InstallPath]/include"
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)
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find_library(LibArchive_LIBRARY
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NAMES archive libarchive
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PATHS
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"[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\LibArchive;InstallPath]/lib"
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)
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mark_as_advanced(LibArchive_INCLUDE_DIR LibArchive_LIBRARY)
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# Extract the version number from the header.
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if(LibArchive_INCLUDE_DIR AND EXISTS "${LibArchive_INCLUDE_DIR}/archive.h")
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# The version string appears in one of three known formats in the header:
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# #define ARCHIVE_LIBRARY_VERSION "libarchive 2.4.12"
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# #define ARCHIVE_VERSION_STRING "libarchive 2.8.4"
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# #define ARCHIVE_VERSION_ONLY_STRING "3.2.0"
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# Match any format.
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set(_LibArchive_VERSION_REGEX "^#define[ \t]+ARCHIVE[_A-Z]+VERSION[_A-Z]*[ \t]+\"(libarchive +)?([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*\".*$")
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file(STRINGS "${LibArchive_INCLUDE_DIR}/archive.h" _LibArchive_VERSION_STRING LIMIT_COUNT 1 REGEX "${_LibArchive_VERSION_REGEX}")
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if(_LibArchive_VERSION_STRING)
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string(REGEX REPLACE "${_LibArchive_VERSION_REGEX}" "\\2.\\3.\\4" LibArchive_VERSION "${_LibArchive_VERSION_STRING}")
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endif()
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unset(_LibArchive_VERSION_REGEX)
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unset(_LibArchive_VERSION_STRING)
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endif()
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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find_package_handle_standard_args(LibArchive
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REQUIRED_VARS LibArchive_LIBRARY LibArchive_INCLUDE_DIR
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VERSION_VAR LibArchive_VERSION
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)
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unset(LIBARCHIVE_FOUND)
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if(LibArchive_FOUND)
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set(LibArchive_INCLUDE_DIRS ${LibArchive_INCLUDE_DIR})
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set(LibArchive_LIBRARIES ${LibArchive_LIBRARY})
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endif()
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