228 lines
6.2 KiB
CMake
228 lines
6.2 KiB
CMake
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#[=======================================================================[
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Copyright (c) 2019 John Norrbin <jlnorrbin@johnex.se>
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Permission to use, copy, modify, and distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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FindLibreSSL
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------------
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Find the LibreSSL encryption library.
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Optional Components
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^^^^^^^^^^^^^^^^^^^
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This module supports two optional components: SSL and TLS. Both
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components have associated imported targets, as described below.
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Imported Targets
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^^^^^^^^^^^^^^^^
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This module defines the following imported targets:
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LibreSSL::Crypto
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The LibreSSL crypto library, if found.
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LibreSSL::SSL
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The LibreSSL ssl library, if found. Requires and includes LibreSSL::Crypto automatically.
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LibreSSL::TLS
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The LibreSSL tls library, if found. Requires and includes LibreSSL::SSL and LibreSSL::Crypto automatically.
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Result Variables
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^^^^^^^^^^^^^^^^
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This module will set the following variables in your project:
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LIBRESSL_FOUND
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System has the LibreSSL library. If no components are requested it only requires the crypto library.
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LIBRESSL_INCLUDE_DIR
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The LibreSSL include directory.
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LIBRESSL_CRYPTO_LIBRARY
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The LibreSSL crypto library.
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LIBRESSL_SSL_LIBRARY
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The LibreSSL SSL library.
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LIBRESSL_TLS_LIBRARY
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The LibreSSL TLS library.
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LIBRESSL_LIBRARIES
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All LibreSSL libraries.
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LIBRESSL_VERSION
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This is set to $major.$minor.$revision (e.g. 2.6.8).
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Hints
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^^^^^
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Set LIBRESSL_ROOT_DIR to the root directory of an LibreSSL installation.
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]=======================================================================]
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INCLUDE(FindPackageHandleStandardArgs)
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# Set Hints
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set(_LIBRESSL_ROOT_HINTS
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${LIBRESSL_ROOT_DIR}
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ENV LIBRESSL_ROOT_DIR
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)
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# Set Paths
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if (WIN32)
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file(TO_CMAKE_PATH "$ENV{PROGRAMFILES}" _programfiles)
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set(_LIBRESSL_ROOT_PATHS
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"${_programfiles}/LibreSSL"
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)
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unset(_programfiles)
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else()
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set(_LIBRESSL_ROOT_PATHS
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"/usr/local/"
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)
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endif()
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# Combine
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set(_LIBRESSL_ROOT_HINTS_AND_PATHS
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HINTS ${_LIBRESSL_ROOT_HINTS}
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PATHS ${_LIBRESSL_ROOT_PATHS}
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)
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# Find Include Path
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find_path(LIBRESSL_INCLUDE_DIR
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NAMES
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tls.h
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${_LIBRESSL_ROOT_HINTS_AND_PATHS}
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PATH_SUFFIXES
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include
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)
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# Find Crypto Library
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find_library(LIBRESSL_CRYPTO_LIBRARY
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NAMES
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libcrypto
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crypto
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NAMES_PER_DIR
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${_LIBRESSL_ROOT_HINTS_AND_PATHS}
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PATH_SUFFIXES
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lib
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)
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# Find SSL Library
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find_library(LIBRESSL_SSL_LIBRARY
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NAMES
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libssl
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ssl
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NAMES_PER_DIR
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${_LIBRESSL_ROOT_HINTS_AND_PATHS}
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PATH_SUFFIXES
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lib
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)
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# Find TLS Library
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find_library(LIBRESSL_TLS_LIBRARY
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NAMES
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libtls
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tls
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NAMES_PER_DIR
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${_LIBRESSL_ROOT_HINTS_AND_PATHS}
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PATH_SUFFIXES
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lib
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)
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# Set Libraries
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set(LIBRESSL_LIBRARIES ${LIBRESSL_CRYPTO_LIBRARY} ${LIBRESSL_SSL_LIBRARY} ${LIBRESSL_TLS_LIBRARY})
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# Mark Variables As Advanced
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mark_as_advanced(LIBRESSL_INCLUDE_DIR LIBRESSL_LIBRARIES LIBRESSL_CRYPTO_LIBRARY LIBRESSL_SSL_LIBRARY LIBRESSL_TLS_LIBRARY)
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# Find Version File
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if(LIBRESSL_INCLUDE_DIR AND EXISTS "${LIBRESSL_INCLUDE_DIR}/openssl/opensslv.h")
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# Get Version From File
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file(STRINGS "${LIBRESSL_INCLUDE_DIR}/openssl/opensslv.h" OPENSSLV.H REGEX "#define LIBRESSL_VERSION_TEXT[ ]+\".*\"")
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# Match Version String
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string(REGEX REPLACE ".*\".*([0-9]+)\\.([0-9]+)\\.([0-9]+)\"" "\\1;\\2;\\3" LIBRESSL_VERSION_LIST "${OPENSSLV.H}")
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# Split Parts
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list(GET LIBRESSL_VERSION_LIST 0 LIBRESSL_VERSION_MAJOR)
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list(GET LIBRESSL_VERSION_LIST 1 LIBRESSL_VERSION_MINOR)
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list(GET LIBRESSL_VERSION_LIST 2 LIBRESSL_VERSION_REVISION)
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# Set Version String
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set(LIBRESSL_VERSION "${LIBRESSL_VERSION_MAJOR}.${LIBRESSL_VERSION_MINOR}.${LIBRESSL_VERSION_REVISION}")
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endif()
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# Set Find Package Arguments
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find_package_handle_standard_args(LibreSSL
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REQUIRED_VARS
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LIBRESSL_CRYPTO_LIBRARY
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LIBRESSL_INCLUDE_DIR
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VERSION_VAR
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LIBRESSL_VERSION
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HANDLE_COMPONENTS
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FAIL_MESSAGE
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"Could NOT find LibreSSL, try setting the path to LibreSSL using the LIBRESSL_ROOT_DIR environment variable"
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)
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# LibreSSL Found
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if(LIBRESSL_FOUND)
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# Set LibreSSL::Crypto
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if(NOT TARGET LibreSSL::Crypto AND EXISTS "${LIBRESSL_CRYPTO_LIBRARY}")
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# Add Library
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add_library(LibreSSL::Crypto UNKNOWN IMPORTED)
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# Set Properties
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set_target_properties(
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LibreSSL::Crypto
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PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${LIBRESSL_INCLUDE_DIR}"
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION "${LIBRESSL_CRYPTO_LIBRARY}"
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)
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endif() # LibreSSL::Crypto
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# Set LibreSSL::SSL
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if(NOT TARGET LibreSSL::SSL AND EXISTS "${LIBRESSL_SSL_LIBRARY}")
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# Add Library
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add_library(LibreSSL::SSL UNKNOWN IMPORTED)
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# Set Properties
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set_target_properties(
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LibreSSL::SSL
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PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${LIBRESSL_INCLUDE_DIR}"
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION "${LIBRESSL_SSL_LIBRARY}"
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INTERFACE_LINK_LIBRARIES LibreSSL::Crypto
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)
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endif() # LibreSSL::SSL
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# Set LibreSSL::TLS
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if(NOT TARGET LibreSSL::TLS AND EXISTS "${LIBRESSL_TLS_LIBRARY}")
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add_library(LibreSSL::TLS UNKNOWN IMPORTED)
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set_target_properties(
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LibreSSL::TLS
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PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${LIBRESSL_INCLUDE_DIR}"
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION "${LIBRESSL_TLS_LIBRARY}"
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INTERFACE_LINK_LIBRARIES LibreSSL::SSL
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)
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endif() # LibreSSL::TLS
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endif(LIBRESSL_FOUND)
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