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annotate Resources/CMake/Compiler.cmake @ 3103:81b58b549845

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back to using 'var' instead of 'let' since let is not supported by many old browsers. All variables declaration have been moved to the top of the function to better show that their scope is the function
author Alain Mazy <alain@mazy.be>
date Thu, 10 Jan 2019 10:51:36 +0100
parents 13038d638097
children 077e1101d908
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1 # This file sets all the compiler-related flags
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2
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3 if (CMAKE_CROSSCOMPILING OR
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4 "${CMAKE_SYSTEM_VERSION}" STREQUAL "LinuxStandardBase")
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5 # Cross-compilation necessarily implies standalone and static build
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6 SET(STATIC_BUILD ON)
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7 SET(STANDALONE_BUILD ON)
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8 endif()
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9
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10 if (CMAKE_COMPILER_IS_GNUCXX)
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11 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-long-long")
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12
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13 # --std=c99 makes libcurl not to compile
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14 # -pedantic gives a lot of warnings on OpenSSL
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15 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-long-long -Wno-variadic-macros")
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16
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17 if (CMAKE_CROSSCOMPILING)
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18 # http://stackoverflow.com/a/3543845/881731
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19 set(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> -O coff -I<CMAKE_CURRENT_SOURCE_DIR> <SOURCE> <OBJECT>")
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20 endif()
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21
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22 elseif (MSVC)
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23 # Use static runtime under Visual Studio
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24 # http://www.cmake.org/Wiki/CMake_FAQ#Dynamic_Replace
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25 # http://stackoverflow.com/a/6510446
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26 foreach(flag_var
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27 CMAKE_C_FLAGS_DEBUG
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28 CMAKE_CXX_FLAGS_DEBUG
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29 CMAKE_C_FLAGS_RELEASE
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30 CMAKE_CXX_FLAGS_RELEASE
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31 CMAKE_C_FLAGS_MINSIZEREL
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32 CMAKE_CXX_FLAGS_MINSIZEREL
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33 CMAKE_C_FLAGS_RELWITHDEBINFO
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34 CMAKE_CXX_FLAGS_RELWITHDEBINFO)
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35 string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
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36 string(REGEX REPLACE "/MDd" "/MTd" ${flag_var} "${${flag_var}}")
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37 endforeach(flag_var)
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38
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39 # Add /Zm256 compiler option to Visual Studio to fix PCH errors
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40 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zm256")
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41
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42 add_definitions(
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43 -D_CRT_SECURE_NO_WARNINGS=1
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44 -D_CRT_SECURE_NO_DEPRECATE=1
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45 )
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46
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47 if (MSVC_VERSION LESS 1600)
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48 # Starting with Visual Studio >= 2010 (i.e. macro _MSC_VER >=
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49 # 1600), Microsoft ships a standard-compliant <stdint.h>
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50 # header. For earlier versions of Visual Studio, give access to a
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51 # compatibility header.
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52 # http://stackoverflow.com/a/70630/881731
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53 # https://en.wikibooks.org/wiki/C_Programming/C_Reference/stdint.h#External_links
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54 include_directories(${ORTHANC_ROOT}/Resources/ThirdParty/VisualStudio)
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55 endif()
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56
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57 link_libraries(netapi32)
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58 endif()
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59
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60
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61 if (${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" OR
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62 ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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63 # In FreeBSD/OpenBSD, the "/usr/local/" folder contains the ports and need to be imported
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64 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I/usr/local/include")
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65 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -I/usr/local/include")
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66 SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L/usr/local/lib")
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67 SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -L/usr/local/lib")
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68 endif()
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69
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70
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71 if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR
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72 ${CMAKE_SYSTEM_NAME} STREQUAL "kFreeBSD" OR
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73 ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" OR
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74 ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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75
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76 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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77 # The "--no-undefined" linker flag makes the shared libraries
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78 # (plugins ModalityWorklists and ServeFolders) fail to compile on OpenBSD
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79 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--no-undefined")
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80 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined")
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81 endif()
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82
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83 if (NOT DEFINED ENABLE_PLUGINS_VERSION_SCRIPT OR
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84 ENABLE_PLUGINS_VERSION_SCRIPT)
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85 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--version-script=${ORTHANC_ROOT}/Plugins/Samples/Common/VersionScript.map")
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86 endif()
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87
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88 # Remove the "-rdynamic" option
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89 # http://www.mail-archive.com/cmake@cmake.org/msg08837.html
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90 set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
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91 link_libraries(pthread)
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92
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93 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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94 link_libraries(rt)
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95 endif()
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96
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97 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" AND
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98 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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99 link_libraries(dl)
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100 endif()
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101
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102 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" AND
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103 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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104 # The "--as-needed" linker flag is not available on FreeBSD and OpenBSD
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105 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--as-needed")
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106 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--as-needed")
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107 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--as-needed")
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108 endif()
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109
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110 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" AND
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111 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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112 # FreeBSD/OpenBSD have just one single interface for file
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113 # handling, which is 64bit clean, so there is no need to define macro
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114 # for LFS (Large File Support).
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115 # https://ohse.de/uwe/articles/lfs.html
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116 add_definitions(
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117 -D_LARGEFILE64_SOURCE=1
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118 -D_FILE_OFFSET_BITS=64
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119 )
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120 endif()
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121
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122 elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
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123 if (MSVC)
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124 message("MSVC compiler version = " ${MSVC_VERSION} "\n")
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125 # Starting Visual Studio 2013 (version 1800), it is not possible
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126 # to target Windows XP anymore
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127 if (MSVC_VERSION LESS 1800)
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128 add_definitions(
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129 -DWINVER=0x0501
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130 -D_WIN32_WINNT=0x0501
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131 )
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132 endif()
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133 else()
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134 add_definitions(
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135 -DWINVER=0x0501
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136 -D_WIN32_WINNT=0x0501
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137 )
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138 endif()
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139
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140 add_definitions(
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141 -D_CRT_SECURE_NO_WARNINGS=1
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142 )
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143 link_libraries(rpcrt4 ws2_32)
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144
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145 if (CMAKE_COMPILER_IS_GNUCXX)
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146 # Some additional C/C++ compiler flags for MinGW
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147 SET(MINGW_NO_WARNINGS "-Wno-unused-function -Wno-unused-variable")
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148 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${MINGW_NO_WARNINGS} -Wno-pointer-to-int-cast -Wno-int-to-pointer-cast")
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149 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${MINGW_NO_WARNINGS}")
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150
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151 # This is a patch for MinGW64
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152 SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--allow-multiple-definition -static-libgcc -static-libstdc++")
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153 SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--allow-multiple-definition -static-libgcc -static-libstdc++")
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154
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155 CHECK_LIBRARY_EXISTS(winpthread pthread_create "" HAVE_WIN_PTHREAD)
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156 if (HAVE_WIN_PTHREAD)
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157 # This line is necessary to compile with recent versions of MinGW,
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158 # otherwise "libwinpthread-1.dll" is not statically linked.
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159 SET(CMAKE_CXX_STANDARD_LIBRARIES "${CMAKE_CXX_STANDARD_LIBRARIES} -Wl,-Bstatic -lstdc++ -lpthread -Wl,-Bdynamic")
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160 add_definitions(-DHAVE_WIN_PTHREAD=1)
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161 else()
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162 add_definitions(-DHAVE_WIN_PTHREAD=0)
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163 endif()
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164 endif()
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165
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166 elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
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167 SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -exported_symbols_list ${ORTHANC_ROOT}/Plugins/Samples/Common/ExportedSymbols.list")
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168
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169 add_definitions(
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170 -D_XOPEN_SOURCE=1
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171 )
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172 link_libraries(iconv)
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173
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174 elseif (CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
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175 message("Building using Emscripten (for WebAssembly or asm.js targets)")
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176
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177 # The BINARYEN_TRAP_MODE specifies what to do when divisions per
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178 # zero (and similar conditions like integer overflows) are
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179 # encountered: The "clamp" mode avoids throwing errors, as they
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180 # cannot be properly catched by "try {} catch (...)" constructions.
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181 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s EXTRA_EXPORTED_RUNTIME_METHODS='[\"ccall\", \"cwrap\"]' -s BINARYEN_TRAP_MODE='\"clamp\"'")
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182
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183 elseif (CMAKE_SYSTEM_NAME STREQUAL "Android")
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184
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185 else()
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186 message("Unknown target platform: ${CMAKE_SYSTEM_NAME}")
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187 message(FATAL_ERROR "Support your platform here")
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188 endif()
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189
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190
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191 if (DEFINED ENABLE_PROFILING AND ENABLE_PROFILING)
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192 if (CMAKE_COMPILER_IS_GNUCXX)
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193 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pg")
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194 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pg")
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195 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pg")
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196 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -pg")
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197 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -pg")
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198 else()
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199 message(FATAL_ERROR "Don't know how to enable profiling on your configuration")
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200 endif()
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201 endif()
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202
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203
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204 if (CMAKE_COMPILER_IS_GNUCXX)
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205 # "When creating a static library using binutils (ar) and there
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206 # exist a duplicate object name (e.g. a/Foo.cpp.o, b/Foo.cpp.o), the
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207 # resulting static library can end up having only one of the
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208 # duplicate objects. [...] This bug only happens if there are many
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209 # objects." The trick consists in replacing the "r" argument
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210 # ("replace") provided to "ar" (as used in CMake < 3.1) by the "q"
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211 # argument ("quick append"). This is because of the fact that CMake
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212 # will invoke "ar" several times with several batches of ".o"
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213 # objects, and using "r" would overwrite symbols defined in
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214 # preceding batches. https://cmake.org/Bug/view.php?id=14874
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215 set(CMAKE_CXX_ARCHIVE_APPEND "<CMAKE_AR> <LINK_FLAGS> q <TARGET> <OBJECTS>")
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216 endif()
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217
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218
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219 if (STATIC_BUILD)
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220 add_definitions(-DORTHANC_STATIC=1)
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221 else()
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222 add_definitions(-DORTHANC_STATIC=0)
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223 endif()