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1 # Orthanc - A Lightweight, RESTful DICOM Store
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2 # Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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3 # Department, University Hospital of Liege, Belgium
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4 # Copyright (C) 2017-2023 Osimis S.A., Belgium
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5 # Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
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6 # Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 #
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8 # This program is free software: you can redistribute it and/or
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9 # modify it under the terms of the GNU Lesser General Public License
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10 # as published by the Free Software Foundation, either version 3 of
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11 # the License, or (at your option) any later version.
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12 #
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13 # This program is distributed in the hope that it will be useful, but
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14 # WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 # Lesser General Public License for more details.
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17 #
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18 # You should have received a copy of the GNU Lesser General Public
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19 # License along with this program. If not, see
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20 # <http://www.gnu.org/licenses/>.
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21
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22
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23 # This file sets all the compiler-related flags
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24
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25
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26 # Save the current compiler flags to the cache every time cmake configures the project
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27 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "compiler flags" FORCE)
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28 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "compiler flags" FORCE)
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29
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30
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31 include(CheckLibraryExists)
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32
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33 if ((CMAKE_CROSSCOMPILING AND NOT
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34 "${CMAKE_SYSTEM_VERSION}" STREQUAL "CrossToolNg") OR
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35 "${CMAKE_SYSTEM_VERSION}" STREQUAL "LinuxStandardBase")
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36 # Cross-compilation necessarily implies standalone and static build
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37 SET(STATIC_BUILD ON)
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38 SET(STANDALONE_BUILD ON)
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39 endif()
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40
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41
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42 if ("${CMAKE_SYSTEM_VERSION}" STREQUAL "LinuxStandardBase")
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43 # Cache the environment variables "LSB_CC" and "LSB_CXX" for further
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44 # use by "ExternalProject" in CMake
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45 SET(CMAKE_LSB_CC $ENV{LSB_CC} CACHE STRING "")
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46 SET(CMAKE_LSB_CXX $ENV{LSB_CXX} CACHE STRING "")
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47
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48 # This is necessary to build "Orthanc mainline - Framework LSB
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49 # Release" on "buildbot-worker-debian11"
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50 set(LSB_PTHREAD_NONSHARED "${LSB_PATH}/lib64-${LSB_TARGET_VERSION}/libpthread_nonshared.a")
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51 if (EXISTS ${LSB_PTHREAD_NONSHARED})
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52 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${LSB_PTHREAD_NONSHARED}")
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53 endif()
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54 endif()
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55
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56
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57 if (CMAKE_COMPILER_IS_GNUCXX)
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58 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-long-long")
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59
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60 # --std=c99 makes libcurl not to compile
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61 # -pedantic gives a lot of warnings on OpenSSL
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62 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-long-long -Wno-variadic-macros")
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63
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64 if (CMAKE_CROSSCOMPILING)
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65 # http://stackoverflow.com/a/3543845/881731
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66 set(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> -O coff -I<CMAKE_CURRENT_SOURCE_DIR> <SOURCE> <OBJECT>")
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67 endif()
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68
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69 elseif (MSVC)
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70 # Use static runtime under Visual Studio
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71 # http://www.cmake.org/Wiki/CMake_FAQ#Dynamic_Replace
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72 # http://stackoverflow.com/a/6510446
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73 foreach(flag_var
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74 CMAKE_C_FLAGS_DEBUG
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75 CMAKE_CXX_FLAGS_DEBUG
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76 CMAKE_C_FLAGS_RELEASE
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77 CMAKE_CXX_FLAGS_RELEASE
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78 CMAKE_C_FLAGS_MINSIZEREL
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79 CMAKE_CXX_FLAGS_MINSIZEREL
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80 CMAKE_C_FLAGS_RELWITHDEBINFO
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81 CMAKE_CXX_FLAGS_RELWITHDEBINFO)
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82 string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
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83 string(REGEX REPLACE "/MDd" "/MTd" ${flag_var} "${${flag_var}}")
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84 endforeach(flag_var)
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85
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86 # Add /Zm256 compiler option to Visual Studio to fix PCH errors
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87 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zm256")
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88
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89 # New in Orthanc 1.5.5
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90 if (MSVC_MULTIPLE_PROCESSES)
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91 # "If you omit the processMax argument in the /MP option, the
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92 # compiler obtains the number of effective processors from the
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93 # operating system, and then creates one process per effective
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94 # processor"
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95 # https://blog.kitware.com/cmake-building-with-all-your-cores/
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96 # https://docs.microsoft.com/en-us/cpp/build/reference/mp-build-with-multiple-processes
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97 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /MP")
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98 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
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99 endif()
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100
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101 add_definitions(
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102 -D_CRT_SECURE_NO_WARNINGS=1
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103 -D_CRT_SECURE_NO_DEPRECATE=1
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104 )
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105
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106 if (MSVC_VERSION LESS 1600)
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107 # Starting with Visual Studio >= 2010 (i.e. macro _MSC_VER >=
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108 # 1600), Microsoft ships a standard-compliant <stdint.h>
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109 # header. For earlier versions of Visual Studio, give access to a
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110 # compatibility header.
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111 # http://stackoverflow.com/a/70630/881731
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112 # https://en.wikibooks.org/wiki/C_Programming/C_Reference/stdint.h#External_links
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113 include_directories(${CMAKE_CURRENT_LIST_DIR}/../../Resources/ThirdParty/VisualStudio)
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114 endif()
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115
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116 link_libraries(netapi32)
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117 endif()
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118
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119
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120 if (${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" OR
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121 ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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122 # In FreeBSD/OpenBSD, the "/usr/local/" folder contains the ports and need to be imported
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123 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I/usr/local/include")
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124 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -I/usr/local/include")
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125 SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L/usr/local/lib")
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126 SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -L/usr/local/lib")
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127 endif()
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128
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129
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130 if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR
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131 ${CMAKE_SYSTEM_NAME} STREQUAL "kFreeBSD" OR
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132 ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" OR
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133 ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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134
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135 if (# NOT ${CMAKE_SYSTEM_VERSION} STREQUAL "LinuxStandardBase" AND
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136 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD" AND
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137 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
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138 # The "--no-undefined" linker flag makes the shared libraries
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139 # (plugins ModalityWorklists and ServeFolders) fail to compile on
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140 # OpenBSD, and make the PostgreSQL plugin complain about missing
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141 # "environ" global variable in FreeBSD.
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142 #
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143 # TODO - Furthermore, on Linux Standard Base running on Debian 12,
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144 # the "-Wl,--no-undefined" seems to break the compilation (added
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145 # after Orthanc 1.12.2). This is disabled for now.
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146 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--no-undefined")
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147 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined")
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148 endif()
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149
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150 # Remove the "-rdynamic" option
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151 # http://www.mail-archive.com/cmake@cmake.org/msg08837.html
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152 set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
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153 link_libraries(pthread)
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154
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155 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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156 link_libraries(rt)
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157 endif()
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158
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159 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" AND
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160 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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161 link_libraries(dl)
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162 endif()
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163
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164 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" AND
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165 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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166 # The "--as-needed" linker flag is not available on FreeBSD and OpenBSD
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167 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--as-needed")
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168 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--as-needed")
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169 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--as-needed")
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170 endif()
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171
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172 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" AND
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173 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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174 # FreeBSD/OpenBSD have just one single interface for file
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175 # handling, which is 64bit clean, so there is no need to define macro
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176 # for LFS (Large File Support).
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177 # https://ohse.de/uwe/articles/lfs.html
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178 add_definitions(
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179 -D_LARGEFILE64_SOURCE=1
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180 -D_FILE_OFFSET_BITS=64
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181 )
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182 endif()
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183
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184 elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
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185 if (MSVC)
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186 message("MSVC compiler version = " ${MSVC_VERSION} "\n")
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187 # Starting Visual Studio 2013 (version 1800), it is not possible
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188 # to target Windows XP anymore
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189 if (MSVC_VERSION LESS 1800)
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190 add_definitions(
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191 -DWINVER=0x0501
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192 -D_WIN32_WINNT=0x0501
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193 )
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194 endif()
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195 else()
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196 add_definitions(
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197 -DWINVER=0x0501
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198 -D_WIN32_WINNT=0x0501
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199 )
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200 endif()
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201
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202 add_definitions(
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203 -D_CRT_SECURE_NO_WARNINGS=1
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204 )
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205 link_libraries(rpcrt4 ws2_32 iphlpapi) # "iphlpapi" is for "SystemToolbox::GetMacAddresses()"
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206
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207 if (CMAKE_COMPILER_IS_GNUCXX)
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208 # Some additional C/C++ compiler flags for MinGW
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209 SET(MINGW_NO_WARNINGS "-Wno-unused-function -Wno-unused-variable")
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210 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${MINGW_NO_WARNINGS} -Wno-pointer-to-int-cast -Wno-int-to-pointer-cast")
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211 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${MINGW_NO_WARNINGS}")
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212
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213 if (DYNAMIC_MINGW_STDLIB)
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214 else()
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215 # This is a patch for MinGW64
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216 SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--allow-multiple-definition -static-libgcc -static-libstdc++")
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217 SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--allow-multiple-definition -static-libgcc -static-libstdc++")
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218 endif()
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219
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220 CHECK_LIBRARY_EXISTS(winpthread pthread_create "" HAVE_WIN_PTHREAD)
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221 if (HAVE_WIN_PTHREAD)
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222 if (DYNAMIC_MINGW_STDLIB)
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223 else()
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224 # This line is necessary to compile with recent versions of MinGW,
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225 # otherwise "libwinpthread-1.dll" is not statically linked.
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226 SET(CMAKE_CXX_STANDARD_LIBRARIES "${CMAKE_CXX_STANDARD_LIBRARIES} -Wl,-Bstatic -lstdc++ -lpthread -Wl,-Bdynamic")
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227 endif()
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228 add_definitions(-DHAVE_WIN_PTHREAD=1)
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229 else()
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230 add_definitions(-DHAVE_WIN_PTHREAD=0)
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231 endif()
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232 endif()
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233
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234 elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
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235 add_definitions(
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236 -D_XOPEN_SOURCE=1
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237 )
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238 link_libraries(iconv)
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239
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240 elseif (CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
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241 message("Building using Emscripten (for WebAssembly or asm.js targets)")
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242 include(${CMAKE_CURRENT_LIST_DIR}/EmscriptenParameters.cmake)
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243
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244 elseif (CMAKE_SYSTEM_NAME STREQUAL "Android")
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245
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246 else()
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247 message("Unknown target platform: ${CMAKE_SYSTEM_NAME}")
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248 message(FATAL_ERROR "Support your platform here")
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249 endif()
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250
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251
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252 if (DEFINED ENABLE_PROFILING AND ENABLE_PROFILING)
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253 if (CMAKE_COMPILER_IS_GNUCXX OR
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254 CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
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255 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pg")
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256 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pg")
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257 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pg")
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258 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -pg")
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259 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -pg")
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260 else()
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261 message(FATAL_ERROR "Don't know how to enable profiling on your configuration")
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262 endif()
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263 endif()
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264
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265
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266 if (CMAKE_COMPILER_IS_GNUCXX)
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267 # "When creating a static library using binutils (ar) and there
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268 # exist a duplicate object name (e.g. a/Foo.cpp.o, b/Foo.cpp.o), the
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269 # resulting static library can end up having only one of the
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270 # duplicate objects. [...] This bug only happens if there are many
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271 # objects." The trick consists in replacing the "r" argument
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272 # ("replace") provided to "ar" (as used in CMake < 3.1) by the "q"
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273 # argument ("quick append"). This is because of the fact that CMake
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274 # will invoke "ar" several times with several batches of ".o"
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275 # objects, and using "r" would overwrite symbols defined in
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276 # preceding batches. https://cmake.org/Bug/view.php?id=14874
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277 set(CMAKE_CXX_ARCHIVE_APPEND "<CMAKE_AR> <LINK_FLAGS> q <TARGET> <OBJECTS>")
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278 endif()
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279
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280
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281 # This function defines macro "__ORTHANC_FILE__" as a replacement to
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282 # macro "__FILE__", as the latter leaks the full path of the source
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283 # files in the binaries
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284 # https://stackoverflow.com/questions/8487986/file-macro-shows-full-path
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285 # https://twitter.com/wget42/status/1676877802375634944?s=20
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286 function(DefineSourceBasenameForTarget targetname)
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287 # Microsoft Visual Studio is extremely slow if using
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288 # "set_property()", we only enable this feature for gcc and clang
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289 if (CMAKE_COMPILER_IS_GNUCXX OR
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290 CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
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291 get_target_property(source_files "${targetname}" SOURCES)
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292 foreach(sourcefile ${source_files})
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293 get_filename_component(basename "${sourcefile}" NAME)
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294 set_property(
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295 SOURCE "${sourcefile}" APPEND
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296 PROPERTY COMPILE_DEFINITIONS "__ORTHANC_FILE__=\"${basename}\"")
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297 endforeach()
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298 endif()
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299 endfunction()
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