Support build against LibreSSL #1451
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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 | ||
| purpose with or without fee is hereby granted, provided that the above | ||
| 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 | ||
| WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | ||
| MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | ||
| ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
| WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | ||
| ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | ||
| OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
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| FindLibreSSL | ||
| ------------ | ||
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| Find the LibreSSL encryption library. | ||
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| Optional Components | ||
| ^^^^^^^^^^^^^^^^^^^ | ||
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| This module supports two optional components: SSL and TLS. Both | ||
| components have associated imported targets, as described below. | ||
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| Imported Targets | ||
| ^^^^^^^^^^^^^^^^ | ||
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| This module defines the following imported targets: | ||
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| LibreSSL::Crypto | ||
| The LibreSSL crypto library, if found. | ||
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| LibreSSL::SSL | ||
| The LibreSSL ssl library, if found. Requires and includes LibreSSL::Crypto automatically. | ||
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| LibreSSL::TLS | ||
| 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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| This module will set the following variables in your project: | ||
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| LIBRESSL_FOUND | ||
| System has the LibreSSL library. If no components are requested it only requires the crypto library. | ||
| LIBRESSL_INCLUDE_DIR | ||
| The LibreSSL include directory. | ||
| LIBRESSL_CRYPTO_LIBRARY | ||
| The LibreSSL crypto library. | ||
| LIBRESSL_SSL_LIBRARY | ||
| The LibreSSL SSL library. | ||
| LIBRESSL_TLS_LIBRARY | ||
| The LibreSSL TLS library. | ||
| LIBRESSL_LIBRARIES | ||
| All LibreSSL libraries. | ||
| LIBRESSL_VERSION | ||
| This is set to $major.$minor.$revision (e.g. 2.6.8). | ||
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| Hints | ||
| ^^^^^ | ||
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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 | ||
| set(_LIBRESSL_ROOT_HINTS | ||
| ${LIBRESSL_ROOT_DIR} | ||
| ENV LIBRESSL_ROOT_DIR | ||
| ) | ||
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| # Set Paths | ||
| if (WIN32) | ||
| file(TO_CMAKE_PATH "$ENV{PROGRAMFILES}" _programfiles) | ||
| set(_LIBRESSL_ROOT_PATHS | ||
| "${_programfiles}/LibreSSL" | ||
| ) | ||
| unset(_programfiles) | ||
| else() | ||
| set(_LIBRESSL_ROOT_PATHS | ||
| "/usr/local/" | ||
| ) | ||
| endif() | ||
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| # Combine | ||
| set(_LIBRESSL_ROOT_HINTS_AND_PATHS | ||
| HINTS ${_LIBRESSL_ROOT_HINTS} | ||
| PATHS ${_LIBRESSL_ROOT_PATHS} | ||
| ) | ||
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| # Find Include Path | ||
| find_path(LIBRESSL_INCLUDE_DIR | ||
| NAMES | ||
| tls.h | ||
| ${_LIBRESSL_ROOT_HINTS_AND_PATHS} | ||
| PATH_SUFFIXES | ||
| include | ||
| ) | ||
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| # Find Crypto Library | ||
| find_library(LIBRESSL_CRYPTO_LIBRARY | ||
| NAMES | ||
| libcrypto | ||
| crypto | ||
| NAMES_PER_DIR | ||
| ${_LIBRESSL_ROOT_HINTS_AND_PATHS} | ||
| PATH_SUFFIXES | ||
| lib | ||
| ) | ||
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| # Find SSL Library | ||
| find_library(LIBRESSL_SSL_LIBRARY | ||
| NAMES | ||
| libssl | ||
| ssl | ||
| NAMES_PER_DIR | ||
| ${_LIBRESSL_ROOT_HINTS_AND_PATHS} | ||
| PATH_SUFFIXES | ||
| lib | ||
| ) | ||
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| # Find TLS Library | ||
| find_library(LIBRESSL_TLS_LIBRARY | ||
| NAMES | ||
| libtls | ||
| tls | ||
| NAMES_PER_DIR | ||
| ${_LIBRESSL_ROOT_HINTS_AND_PATHS} | ||
| PATH_SUFFIXES | ||
| lib | ||
| ) | ||
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| # Set Libraries | ||
| set(LIBRESSL_LIBRARIES ${LIBRESSL_CRYPTO_LIBRARY} ${LIBRESSL_SSL_LIBRARY} ${LIBRESSL_TLS_LIBRARY}) | ||
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| # Mark Variables As Advanced | ||
| mark_as_advanced(LIBRESSL_INCLUDE_DIR LIBRESSL_LIBRARIES LIBRESSL_CRYPTO_LIBRARY LIBRESSL_SSL_LIBRARY LIBRESSL_TLS_LIBRARY) | ||
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| # Find Version File | ||
| if(LIBRESSL_INCLUDE_DIR AND EXISTS "${LIBRESSL_INCLUDE_DIR}/openssl/opensslv.h") | ||
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| # Get Version From File | ||
| file(STRINGS "${LIBRESSL_INCLUDE_DIR}/openssl/opensslv.h" OPENSSLV.H REGEX "#define LIBRESSL_VERSION_TEXT[ ]+\".*\"") | ||
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| # Match Version String | ||
| string(REGEX REPLACE ".*\".*([0-9]+)\\.([0-9]+)\\.([0-9]+)\"" "\\1;\\2;\\3" LIBRESSL_VERSION_LIST "${OPENSSLV.H}") | ||
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| # Split Parts | ||
| list(GET LIBRESSL_VERSION_LIST 0 LIBRESSL_VERSION_MAJOR) | ||
| list(GET LIBRESSL_VERSION_LIST 1 LIBRESSL_VERSION_MINOR) | ||
| list(GET LIBRESSL_VERSION_LIST 2 LIBRESSL_VERSION_REVISION) | ||
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| # Set Version String | ||
| set(LIBRESSL_VERSION "${LIBRESSL_VERSION_MAJOR}.${LIBRESSL_VERSION_MINOR}.${LIBRESSL_VERSION_REVISION}") | ||
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| endif() | ||
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| # Set Find Package Arguments | ||
| find_package_handle_standard_args(LibreSSL | ||
| REQUIRED_VARS | ||
| LIBRESSL_CRYPTO_LIBRARY | ||
| LIBRESSL_INCLUDE_DIR | ||
| VERSION_VAR | ||
| LIBRESSL_VERSION | ||
| HANDLE_COMPONENTS | ||
| FAIL_MESSAGE | ||
| "Could NOT find LibreSSL, try setting the path to LibreSSL using the LIBRESSL_ROOT_DIR environment variable" | ||
| ) | ||
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| # LibreSSL Found | ||
| if(LIBRESSL_FOUND) | ||
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| # Set LibreSSL::Crypto | ||
| if(NOT TARGET LibreSSL::Crypto AND EXISTS "${LIBRESSL_CRYPTO_LIBRARY}") | ||
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| # Add Library | ||
| add_library(LibreSSL::Crypto UNKNOWN IMPORTED) | ||
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| # Set Properties | ||
| set_target_properties( | ||
| LibreSSL::Crypto | ||
| PROPERTIES | ||
| INTERFACE_INCLUDE_DIRECTORIES "${LIBRESSL_INCLUDE_DIR}" | ||
| IMPORTED_LINK_INTERFACE_LANGUAGES "C" | ||
| IMPORTED_LOCATION "${LIBRESSL_CRYPTO_LIBRARY}" | ||
| ) | ||
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| endif() # LibreSSL::Crypto | ||
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| # Set LibreSSL::SSL | ||
| if(NOT TARGET LibreSSL::SSL AND EXISTS "${LIBRESSL_SSL_LIBRARY}") | ||
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| # Add Library | ||
| add_library(LibreSSL::SSL UNKNOWN IMPORTED) | ||
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| # Set Properties | ||
| set_target_properties( | ||
| LibreSSL::SSL | ||
| PROPERTIES | ||
| INTERFACE_INCLUDE_DIRECTORIES "${LIBRESSL_INCLUDE_DIR}" | ||
| IMPORTED_LINK_INTERFACE_LANGUAGES "C" | ||
| IMPORTED_LOCATION "${LIBRESSL_SSL_LIBRARY}" | ||
| INTERFACE_LINK_LIBRARIES LibreSSL::Crypto | ||
| ) | ||
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| endif() # LibreSSL::SSL | ||
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| # Set LibreSSL::TLS | ||
| if(NOT TARGET LibreSSL::TLS AND EXISTS "${LIBRESSL_TLS_LIBRARY}") | ||
| add_library(LibreSSL::TLS UNKNOWN IMPORTED) | ||
| set_target_properties( | ||
| LibreSSL::TLS | ||
| PROPERTIES | ||
| INTERFACE_INCLUDE_DIRECTORIES "${LIBRESSL_INCLUDE_DIR}" | ||
| IMPORTED_LINK_INTERFACE_LANGUAGES "C" | ||
| IMPORTED_LOCATION "${LIBRESSL_TLS_LIBRARY}" | ||
| INTERFACE_LINK_LIBRARIES LibreSSL::SSL | ||
| ) | ||
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| endif() # LibreSSL::TLS | ||
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| endif(LIBRESSL_FOUND) |
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In merging this PR, I don't understand this line. Are we zeroing out the LIBRESSL root_dir, in which case the first parameter should be LIBRESSL_ROOT_DIR?