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| 1 | #[=======================================================================[ | ||
| 2 | |||
| 3 | Copyright (c) 2019 John Norrbin <jlnorrbin@johnex.se> | ||
| 4 | |||
| 5 | Permission to use, copy, modify, and distribute this software for any | ||
| 6 | purpose with or without fee is hereby granted, provided that the above | ||
| 7 | copyright notice and this permission notice appear in all copies. | ||
| 8 | |||
| 9 | THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | ||
| 10 | WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | ||
| 11 | MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | ||
| 12 | ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
| 13 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | ||
| 14 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | ||
| 15 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
| 16 | |||
| 17 | FindLibreSSL | ||
| 18 | ------------ | ||
| 19 | |||
| 20 | Find the LibreSSL encryption library. | ||
| 21 | |||
| 22 | Optional Components | ||
| 23 | ^^^^^^^^^^^^^^^^^^^ | ||
| 24 | |||
| 25 | This module supports two optional components: SSL and TLS. Both | ||
| 26 | components have associated imported targets, as described below. | ||
| 27 | |||
| 28 | Imported Targets | ||
| 29 | ^^^^^^^^^^^^^^^^ | ||
| 30 | |||
| 31 | This module defines the following imported targets: | ||
| 32 | |||
| 33 | LibreSSL::Crypto | ||
| 34 | The LibreSSL crypto library, if found. | ||
| 35 | |||
| 36 | LibreSSL::SSL | ||
| 37 | The LibreSSL ssl library, if found. Requires and includes LibreSSL::Crypto automatically. | ||
| 38 | |||
| 39 | LibreSSL::TLS | ||
| 40 | The LibreSSL tls library, if found. Requires and includes LibreSSL::SSL and LibreSSL::Crypto automatically. | ||
| 41 | |||
| 42 | Result Variables | ||
| 43 | ^^^^^^^^^^^^^^^^ | ||
| 44 | |||
| 45 | This module will set the following variables in your project: | ||
| 46 | |||
| 47 | LIBRESSL_FOUND | ||
| 48 | System has the LibreSSL library. If no components are requested it only requires the crypto library. | ||
| 49 | LIBRESSL_INCLUDE_DIR | ||
| 50 | The LibreSSL include directory. | ||
| 51 | LIBRESSL_CRYPTO_LIBRARY | ||
| 52 | The LibreSSL crypto library. | ||
| 53 | LIBRESSL_SSL_LIBRARY | ||
| 54 | The LibreSSL SSL library. | ||
| 55 | LIBRESSL_TLS_LIBRARY | ||
| 56 | The LibreSSL TLS library. | ||
| 57 | LIBRESSL_LIBRARIES | ||
| 58 | All LibreSSL libraries. | ||
| 59 | LIBRESSL_VERSION | ||
| 60 | This is set to $major.$minor.$revision (e.g. 2.6.8). | ||
| 61 | |||
| 62 | Hints | ||
| 63 | ^^^^^ | ||
| 64 | |||
| 65 | Set LIBRESSL_ROOT_DIR to the root directory of an LibreSSL installation. | ||
| 66 | |||
| 67 | ]=======================================================================] | ||
| 68 | |||
| 69 | # Set Hints | ||
| 70 | set(_LIBRESSL_ROOT_HINTS | ||
| 71 | ${LIBRESSL_ROOT_DIR} | ||
| 72 | ENV LIBRESSL_ROOT_DIR | ||
| 73 | ) | ||
| 74 | |||
| 75 | # Set Paths | ||
| 76 | if (WIN32) | ||
| 77 | file(TO_CMAKE_PATH "$ENV{PROGRAMFILES}" _programfiles) | ||
| 78 | set(_LIBRESSL_ROOT_PATHS | ||
| 79 | "${_programfiles}/LibreSSL" | ||
| 80 | ) | ||
| 81 | unset(_programfiles) | ||
| 82 | else() | ||
| 83 | set(_LIBRESSL_ROOT_PATHS | ||
| 84 | "/usr/local/" | ||
| 85 | ) | ||
| 86 | endif() | ||
| 87 | |||
| 88 | # Combine | ||
| 89 | set(_LIBRESSL_ROOT_HINTS_AND_PATHS | ||
| 90 | HINTS ${_LIBRESSL_ROOT_HINTS} | ||
| 91 | PATHS ${_LIBRESSL_ROOT_PATHS} | ||
| 92 | ) | ||
| 93 | |||
| 94 | # Find Include Path | ||
| 95 | find_path(LIBRESSL_INCLUDE_DIR | ||
| 96 | NAMES | ||
| 97 | tls.h | ||
| 98 | ${_LIBRESSL_ROOT_HINTS_AND_PATHS} | ||
| 99 | PATH_SUFFIXES | ||
| 100 | include | ||
| 101 | ) | ||
| 102 | |||
| 103 | # Find Crypto Library | ||
| 104 | find_library(LIBRESSL_CRYPTO_LIBRARY | ||
| 105 | NAMES | ||
| 106 | libcrypto | ||
| 107 | crypto | ||
| 108 | NAMES_PER_DIR | ||
| 109 | ${_LIBRESSL_ROOT_HINTS_AND_PATHS} | ||
| 110 | PATH_SUFFIXES | ||
| 111 | lib | ||
| 112 | ) | ||
| 113 | |||
| 114 | # Find SSL Library | ||
| 115 | find_library(LIBRESSL_SSL_LIBRARY | ||
| 116 | NAMES | ||
| 117 | libssl | ||
| 118 | ssl | ||
| 119 | NAMES_PER_DIR | ||
| 120 | ${_LIBRESSL_ROOT_HINTS_AND_PATHS} | ||
| 121 | PATH_SUFFIXES | ||
| 122 | lib | ||
| 123 | ) | ||
| 124 | |||
| 125 | # Find TLS Library | ||
| 126 | find_library(LIBRESSL_TLS_LIBRARY | ||
| 127 | NAMES | ||
| 128 | libtls | ||
| 129 | tls | ||
| 130 | NAMES_PER_DIR | ||
| 131 | ${_LIBRESSL_ROOT_HINTS_AND_PATHS} | ||
| 132 | PATH_SUFFIXES | ||
| 133 | lib | ||
| 134 | ) | ||
| 135 | |||
| 136 | # Set Libraries | ||
| 137 | set(LIBRESSL_LIBRARIES ${LIBRESSL_CRYPTO_LIBRARY} ${LIBRESSL_SSL_LIBRARY} ${LIBRESSL_TLS_LIBRARY}) | ||
| 138 | |||
| 139 | # Mark Variables As Advanced | ||
| 140 | mark_as_advanced(LIBRESSL_INCLUDE_DIR LIBRESSL_LIBRARIES LIBRESSL_CRYPTO_LIBRARY LIBRESSL_SSL_LIBRARY LIBRESSL_TLS_LIBRARY) | ||
| 141 | |||
| 142 | # Find Version File | ||
| 143 | if(LIBRESSL_INCLUDE_DIR AND EXISTS "${LIBRESSL_INCLUDE_DIR}/openssl/opensslv.h") | ||
| 144 | |||
| 145 | # Get Version From File | ||
| 146 | file(STRINGS "${LIBRESSL_INCLUDE_DIR}/openssl/opensslv.h" OPENSSLV.H REGEX "#define LIBRESSL_VERSION_TEXT[ ]+\".*\"") | ||
| 147 | |||
| 148 | # Match Version String | ||
| 149 | string(REGEX REPLACE ".*\".*([0-9]+)\\.([0-9]+)\\.([0-9]+)\"" "\\1;\\2;\\3" LIBRESSL_VERSION_LIST "${OPENSSLV.H}") | ||
| 150 | |||
| 151 | # Split Parts | ||
| 152 | list(GET LIBRESSL_VERSION_LIST 0 LIBRESSL_VERSION_MAJOR) | ||
| 153 | list(GET LIBRESSL_VERSION_LIST 1 LIBRESSL_VERSION_MINOR) | ||
| 154 | list(GET LIBRESSL_VERSION_LIST 2 LIBRESSL_VERSION_REVISION) | ||
| 155 | |||
| 156 | # Set Version String | ||
| 157 | set(LIBRESSL_VERSION "${LIBRESSL_VERSION_MAJOR}.${LIBRESSL_VERSION_MINOR}.${LIBRESSL_VERSION_REVISION}") | ||
| 158 | |||
| 159 | endif() | ||
| 160 | |||
| 161 | # Set Find Package Arguments | ||
| 162 | find_package_handle_standard_args(LibreSSL | ||
| 163 | REQUIRED_VARS | ||
| 164 | LIBRESSL_CRYPTO_LIBRARY | ||
| 165 | LIBRESSL_INCLUDE_DIR | ||
| 166 | VERSION_VAR | ||
| 167 | LIBRESSL_VERSION | ||
| 168 | HANDLE_COMPONENTS | ||
| 169 | FAIL_MESSAGE | ||
| 170 | "Could NOT find LibreSSL, try setting the path to LibreSSL using the LIBRESSL_ROOT_DIR environment variable" | ||
| 171 | ) | ||
| 172 | |||
| 173 | # LibreSSL Found | ||
| 174 | if(LIBRESSL_FOUND) | ||
| 175 | |||
| 176 | # Set LibreSSL::Crypto | ||
| 177 | if(NOT TARGET LibreSSL::Crypto AND EXISTS "${LIBRESSL_CRYPTO_LIBRARY}") | ||
| 178 | |||
| 179 | # Add Library | ||
| 180 | add_library(LibreSSL::Crypto UNKNOWN IMPORTED) | ||
| 181 | |||
| 182 | # Set Properties | ||
| 183 | set_target_properties( | ||
| 184 | LibreSSL::Crypto | ||
| 185 | PROPERTIES | ||
| 186 | INTERFACE_INCLUDE_DIRECTORIES "${LIBRESSL_INCLUDE_DIR}" | ||
| 187 | IMPORTED_LINK_INTERFACE_LANGUAGES "C" | ||
| 188 | IMPORTED_LOCATION "${LIBRESSL_CRYPTO_LIBRARY}" | ||
| 189 | ) | ||
| 190 | |||
| 191 | endif() # LibreSSL::Crypto | ||
| 192 | |||
| 193 | # Set LibreSSL::SSL | ||
| 194 | if(NOT TARGET LibreSSL::SSL AND EXISTS "${LIBRESSL_SSL_LIBRARY}") | ||
| 195 | |||
| 196 | # Add Library | ||
| 197 | add_library(LibreSSL::SSL UNKNOWN IMPORTED) | ||
| 198 | |||
| 199 | # Set Properties | ||
| 200 | set_target_properties( | ||
| 201 | LibreSSL::SSL | ||
| 202 | PROPERTIES | ||
| 203 | INTERFACE_INCLUDE_DIRECTORIES "${LIBRESSL_INCLUDE_DIR}" | ||
| 204 | IMPORTED_LINK_INTERFACE_LANGUAGES "C" | ||
| 205 | IMPORTED_LOCATION "${LIBRESSL_SSL_LIBRARY}" | ||
| 206 | INTERFACE_LINK_LIBRARIES LibreSSL::Crypto | ||
| 207 | ) | ||
| 208 | |||
| 209 | endif() # LibreSSL::SSL | ||
| 210 | |||
| 211 | # Set LibreSSL::TLS | ||
| 212 | if(NOT TARGET LibreSSL::TLS AND EXISTS "${LIBRESSL_TLS_LIBRARY}") | ||
| 213 | add_library(LibreSSL::TLS UNKNOWN IMPORTED) | ||
| 214 | set_target_properties( | ||
| 215 | LibreSSL::TLS | ||
| 216 | PROPERTIES | ||
| 217 | INTERFACE_INCLUDE_DIRECTORIES "${LIBRESSL_INCLUDE_DIR}" | ||
| 218 | IMPORTED_LINK_INTERFACE_LANGUAGES "C" | ||
| 219 | IMPORTED_LOCATION "${LIBRESSL_TLS_LIBRARY}" | ||
| 220 | INTERFACE_LINK_LIBRARIES LibreSSL::SSL | ||
| 221 | ) | ||
| 222 | |||
| 223 | endif() # LibreSSL::TLS | ||
| 224 | |||
| 225 | endif(LIBRESSL_FOUND) | ||
