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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) | ||