1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
cmake_minimum_required(VERSION 3.13...3.28)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CORE_DIR ${CMAKE_CURRENT_LIST_DIR}/..)
set(DEP_DIR ${CORE_DIR}/../deps CACHE PATH "Dependencies")
option(USE_MBEDTLS "Use mbed TLS instead of OpenSSL")
option(USE_WERROR "Treat compiler warnings as errors (-Werror)")
option(USE_WCONVERSION "Enable -Wconversion")
if (DEFINED ENV{DEP_DIR})
message("Overriding DEP_DIR setting with environment variable $ENV{DEP_DIR}")
set(DEP_DIR $ENV{DEP_DIR})
endif ()
# Include our DEP_DIR in path used to find libraries
if (APPLE)
set(OPENVPN_PLAT osx)
elseif (WIN32)
set(OPENVPN_PLAT amd64)
else ()
set(OPENVPN_PLAT linux)
endif ()
function(add_ssl_library target)
find_package(PkgConfig REQUIRED)
if (${USE_MBEDTLS})
# mbedtls3.6 for Fedora 41+
pkg_search_module(mbedTLS IMPORTED_TARGET mbedtls3.6 mbedtls)
if (mbedTLS_FOUND)
# Only added as Requires.Private, so we need to look them up ourselves
pkg_search_module(mbedCrypto REQUIRED IMPORTED_TARGET mbedcrypto3.6 mbedcrypto)
pkg_search_module(mbedX509 REQUIRED IMPORTED_TARGET mbedx5093.6 mbedx509)
set(SSL_LIBRARY PkgConfig::mbedTLS PkgConfig::mbedCrypto PkgConfig::mbedX509)
else ()
# mbedTLS 2.x doesn't have pkg-config files
find_package(mbedTLS REQUIRED)
set(SSL_LIBRARY mbedTLS::mbedTLS)
endif ()
target_compile_definitions(${target} PRIVATE -DUSE_MBEDTLS)
else ()
pkg_search_module(OpenSSL REQUIRED IMPORTED_TARGET openssl)
SET(SSL_LIBRARY PkgConfig::OpenSSL)
target_compile_definitions(${target} PRIVATE -DUSE_OPENSSL)
endif ()
target_link_libraries(${target} ${SSL_LIBRARY})
endfunction()
function(add_core_dependencies target)
# It would be nice if we could just do organise the files that make up the OpenVPN3 core library in
# a static library called openvpn3 or similar and be able to do
# target_link_libraries(${target} openvpn3)
# here.
#
# Unfortunately, too much currently depends on per-target compile flags and defines like #define OPENVPN_LOG
# that require compilation of all core files as part of the target that uses the core library.
#
# If even with this approach of adding some extra files to the sources of a target, we need to careful that
# we are depending on definitions that are can be defined differently in another compilation unit.
#
# Until we refactor these problematic defines to be in a common header (like config.h in autoconf land)
# or in set then for the whole target in the cmake files (instead of using #define xy in the top of a cpp file)
# we have to live with this restriction.
#
# The unit test work around this problem by always including test_common.h as very first include in every
# file that double as a config.h equivalent.
add_corelibrary_dependencies(${target})
target_sources(${target} PRIVATE ${CORE_DIR}/openvpn/crypto/data_epoch.cpp)
endfunction()
function(add_corelibrary_dependencies target)
set(PLAT ${OPENVPN_PLAT})
target_include_directories(${target} PRIVATE ${CORE_DIR})
target_compile_definitions(${target} PRIVATE
-DASIO_STANDALONE
-DUSE_ASIO
-DHAVE_LZ4
#-DMBEDTLS_DEPRECATED_REMOVED # with mbed TLS 3.0 we currently still need the deprecated APIs
)
if (WIN32)
target_compile_definitions(${target} PRIVATE
-D_WIN32_WINNT=0x0600
-DTAP_WIN_COMPONENT_ID=tap0901
-D_CRT_SECURE_NO_WARNINGS
-DASIO_DISABLE_LOCAL_SOCKETS
)
set(EXTRA_LIBS fwpuclnt.lib iphlpapi.lib wininet.lib setupapi.lib rpcrt4.lib wtsapi32.lib)
if ("${CMAKE_GENERATOR_PLATFORM}" STREQUAL "ARM64")
# by some reasons CMake doesn't add those for ARM64
list(APPEND EXTRA_LIBS advapi32.lib Ole32.lib Shell32.lib)
endif ()
if (MSVC)
target_compile_options(${target} PRIVATE "/bigobj")
else ()
find_package(Threads REQUIRED)
target_compile_options(${target} PRIVATE "-Wa,-mbig-obj")
list(APPEND EXTRA_LIBS ws2_32 wsock32 ${CMAKE_THREAD_LIBS_INIT})
list(APPEND CMAKE_PREFIX_PATH
${DEP_DIR}/asio/asio
${DEP_DIR}
)
endif ()
else ()
list(APPEND CMAKE_PREFIX_PATH
${DEP_DIR}/asio/asio
${DEP_DIR}/lz4/lz4-${PLAT}
${DEP_DIR}/mbedtls/mbedtls-${PLAT}
)
list(APPEND CMAKE_LIBRARY_PATH
${DEP_DIR}/mbedtls/mbedtls-${PLAT}/library
)
endif ()
# asio should go first since some of our code requires
# a patched version. So we want to prefer its include
# directories.
find_package(asio REQUIRED)
target_link_libraries(${target} asio::asio)
find_package(lz4 REQUIRED)
target_link_libraries(${target} lz4::lz4)
add_ssl_library(${target})
if (APPLE)
find_library(coreFoundation CoreFoundation)
find_library(iokit IOKit)
find_library(coreServices CoreServices)
find_library(systemConfiguration SystemConfiguration)
target_link_libraries(${target} ${coreFoundation} ${iokit} ${coreServices} ${systemConfiguration} ${lz4})
endif()
if(UNIX)
target_link_libraries(${target} pthread)
endif()
target_link_libraries(${target} ${EXTRA_LIBS})
if (USE_WERROR)
if (MSVC)
target_compile_options(${target} PRIVATE /WX)
else ()
target_compile_options(${target} PRIVATE -Werror)
endif ()
endif ()
if (MSVC)
# C4200: nonstandard extension used : zero-sized array in struct/union
# C4146: unary minus operator applied to unsigned type, result still unsigned
target_compile_options(${target} PRIVATE /W3 /wd4200 /wd4146)
else()
target_compile_options(${target} PRIVATE -Wall -Wsign-compare -Wnon-virtual-dtor)
if (USE_WCONVERSION)
target_compile_options(${target} PRIVATE -Wconversion -Wno-sign-conversion)
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
# disable noisy warnings
target_compile_options(${target} PRIVATE -Wno-maybe-uninitialized)
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
# display all warnings
target_compile_options(${target} PRIVATE -ferror-limit=0 -Wno-enum-enum-conversion)
endif()
endif()
endfunction()
function (add_json_library target)
find_package(jsoncpp CONFIG)
if (jsoncpp_FOUND AND TARGET JsonCpp::JsonCpp)
target_link_libraries(${target} JsonCpp::JsonCpp)
target_compile_definitions(${target} PRIVATE -DHAVE_JSONCPP)
else()
find_package(PkgConfig REQUIRED)
if (MINGW)
# due to cmake bug, APPEND doesn't work for mingw
# https://github.com/Kitware/CMake/commit/f92a4b23994fa7516f16fbb5b3c02caa07534b3f
set(CMAKE_PREFIX_PATH ${DEP_DIR})
endif ()
pkg_check_modules(JSONCPP REQUIRED IMPORTED_TARGET jsoncpp)
target_link_libraries(${target} PkgConfig::JSONCPP)
target_compile_definitions(${target} PRIVATE -DHAVE_JSONCPP)
endif ()
endfunction ()
|
