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CMake simplification using DownloadOrthancFramework.cmake
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 06 Jul 2020 17:37:30 +0200
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children 1b6af7a317bf
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fd58eb5749ed CMake simplification using DownloadOrthancFramework.cmake
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1 # This file sets all the compiler-related flags
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2
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3
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4 # Save the current compiler flags to the cache every time cmake configures the project
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5 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "compiler flags" FORCE)
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6 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "compiler flags" FORCE)
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8
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9 include(CheckLibraryExists)
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10
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11 if ((CMAKE_CROSSCOMPILING AND NOT
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12 "${CMAKE_SYSTEM_VERSION}" STREQUAL "CrossToolNg") OR
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13 "${CMAKE_SYSTEM_VERSION}" STREQUAL "LinuxStandardBase")
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14 # Cross-compilation necessarily implies standalone and static build
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15 SET(STATIC_BUILD ON)
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16 SET(STANDALONE_BUILD ON)
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17 endif()
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19
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20 if ("${CMAKE_SYSTEM_VERSION}" STREQUAL "LinuxStandardBase")
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21 # Cache the environment variables "LSB_CC" and "LSB_CXX" for further
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22 # use by "ExternalProject" in CMake
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23 SET(CMAKE_LSB_CC $ENV{LSB_CC} CACHE STRING "")
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24 SET(CMAKE_LSB_CXX $ENV{LSB_CXX} CACHE STRING "")
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25 endif()
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28 if (CMAKE_COMPILER_IS_GNUCXX)
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29 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-long-long")
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30
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31 # --std=c99 makes libcurl not to compile
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32 # -pedantic gives a lot of warnings on OpenSSL
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33 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-long-long -Wno-variadic-macros")
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34
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35 if (CMAKE_CROSSCOMPILING)
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36 # http://stackoverflow.com/a/3543845/881731
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37 set(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> -O coff -I<CMAKE_CURRENT_SOURCE_DIR> <SOURCE> <OBJECT>")
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38 endif()
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39
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40 elseif (MSVC)
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41 # Use static runtime under Visual Studio
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42 # http://www.cmake.org/Wiki/CMake_FAQ#Dynamic_Replace
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43 # http://stackoverflow.com/a/6510446
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44 foreach(flag_var
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45 CMAKE_C_FLAGS_DEBUG
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46 CMAKE_CXX_FLAGS_DEBUG
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47 CMAKE_C_FLAGS_RELEASE
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48 CMAKE_CXX_FLAGS_RELEASE
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49 CMAKE_C_FLAGS_MINSIZEREL
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50 CMAKE_CXX_FLAGS_MINSIZEREL
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51 CMAKE_C_FLAGS_RELWITHDEBINFO
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52 CMAKE_CXX_FLAGS_RELWITHDEBINFO)
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53 string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
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54 string(REGEX REPLACE "/MDd" "/MTd" ${flag_var} "${${flag_var}}")
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55 endforeach(flag_var)
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56
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57 # Add /Zm256 compiler option to Visual Studio to fix PCH errors
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58 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zm256")
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59
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60 # New in Orthanc 1.5.5
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61 if (MSVC_MULTIPLE_PROCESSES)
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62 # "If you omit the processMax argument in the /MP option, the
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63 # compiler obtains the number of effective processors from the
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64 # operating system, and then creates one process per effective
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65 # processor"
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66 # https://blog.kitware.com/cmake-building-with-all-your-cores/
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67 # https://docs.microsoft.com/en-us/cpp/build/reference/mp-build-with-multiple-processes
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68 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /MP")
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69 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
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70 endif()
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71
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72 add_definitions(
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73 -D_CRT_SECURE_NO_WARNINGS=1
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74 -D_CRT_SECURE_NO_DEPRECATE=1
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75 )
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76
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77 if (MSVC_VERSION LESS 1600)
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78 # Starting with Visual Studio >= 2010 (i.e. macro _MSC_VER >=
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79 # 1600), Microsoft ships a standard-compliant <stdint.h>
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80 # header. For earlier versions of Visual Studio, give access to a
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81 # compatibility header.
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82 # http://stackoverflow.com/a/70630/881731
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83 # https://en.wikibooks.org/wiki/C_Programming/C_Reference/stdint.h#External_links
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84 include_directories(${CMAKE_CURRENT_LIST_DIR}/../../Resources/ThirdParty/VisualStudio)
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85 endif()
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86
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87 link_libraries(netapi32)
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88 endif()
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89
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90
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91 if (${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" OR
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92 ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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93 # In FreeBSD/OpenBSD, the "/usr/local/" folder contains the ports and need to be imported
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94 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I/usr/local/include")
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95 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -I/usr/local/include")
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96 SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L/usr/local/lib")
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97 SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -L/usr/local/lib")
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98 endif()
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99
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100
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101 if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR
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102 ${CMAKE_SYSTEM_NAME} STREQUAL "kFreeBSD" OR
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103 ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" OR
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104 ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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105
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106 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD" AND
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107 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
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108 # The "--no-undefined" linker flag makes the shared libraries
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109 # (plugins ModalityWorklists and ServeFolders) fail to compile on
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110 # OpenBSD, and make the PostgreSQL plugin complain about missing
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111 # "environ" global variable in FreeBSD
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112 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--no-undefined")
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113 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined")
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114 endif()
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115
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116 # Remove the "-rdynamic" option
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117 # http://www.mail-archive.com/cmake@cmake.org/msg08837.html
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118 set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
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119 link_libraries(pthread)
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120
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121 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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122 link_libraries(rt)
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123 endif()
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124
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125 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" AND
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126 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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127 link_libraries(dl)
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128 endif()
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129
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130 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" AND
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131 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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132 # The "--as-needed" linker flag is not available on FreeBSD and OpenBSD
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133 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--as-needed")
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134 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--as-needed")
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135 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--as-needed")
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136 endif()
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137
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138 if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" AND
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139 NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
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140 # FreeBSD/OpenBSD have just one single interface for file
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141 # handling, which is 64bit clean, so there is no need to define macro
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142 # for LFS (Large File Support).
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143 # https://ohse.de/uwe/articles/lfs.html
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144 add_definitions(
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145 -D_LARGEFILE64_SOURCE=1
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146 -D_FILE_OFFSET_BITS=64
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147 )
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148 endif()
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149
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150 elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
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151 if (MSVC)
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152 message("MSVC compiler version = " ${MSVC_VERSION} "\n")
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153 # Starting Visual Studio 2013 (version 1800), it is not possible
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154 # to target Windows XP anymore
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155 if (MSVC_VERSION LESS 1800)
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156 add_definitions(
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157 -DWINVER=0x0501
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158 -D_WIN32_WINNT=0x0501
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159 )
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160 endif()
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161 else()
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162 add_definitions(
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163 -DWINVER=0x0501
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164 -D_WIN32_WINNT=0x0501
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165 )
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166 endif()
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167
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168 add_definitions(
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169 -D_CRT_SECURE_NO_WARNINGS=1
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170 )
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171 link_libraries(rpcrt4 ws2_32)
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172
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173 if (CMAKE_COMPILER_IS_GNUCXX)
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174 # Some additional C/C++ compiler flags for MinGW
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175 SET(MINGW_NO_WARNINGS "-Wno-unused-function -Wno-unused-variable")
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176 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${MINGW_NO_WARNINGS} -Wno-pointer-to-int-cast -Wno-int-to-pointer-cast")
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177 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${MINGW_NO_WARNINGS}")
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178
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179 if (DYNAMIC_MINGW_STDLIB)
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180 else()
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181 # This is a patch for MinGW64
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182 SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--allow-multiple-definition -static-libgcc -static-libstdc++")
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183 SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--allow-multiple-definition -static-libgcc -static-libstdc++")
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184 endif()
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185
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186 CHECK_LIBRARY_EXISTS(winpthread pthread_create "" HAVE_WIN_PTHREAD)
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187 if (HAVE_WIN_PTHREAD)
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188 if (DYNAMIC_MINGW_STDLIB)
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189 else()
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190 # This line is necessary to compile with recent versions of MinGW,
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191 # otherwise "libwinpthread-1.dll" is not statically linked.
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192 SET(CMAKE_CXX_STANDARD_LIBRARIES "${CMAKE_CXX_STANDARD_LIBRARIES} -Wl,-Bstatic -lstdc++ -lpthread -Wl,-Bdynamic")
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193 endif()
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194 add_definitions(-DHAVE_WIN_PTHREAD=1)
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195 else()
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196 add_definitions(-DHAVE_WIN_PTHREAD=0)
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197 endif()
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198 endif()
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199
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200 elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
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201 add_definitions(
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202 -D_XOPEN_SOURCE=1
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203 )
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204 link_libraries(iconv)
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205
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206 elseif (CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
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207 message("Building using Emscripten (for WebAssembly or asm.js targets)")
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208 include(${CMAKE_CURRENT_LIST_DIR}/EmscriptenParameters.cmake)
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209
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210 elseif (CMAKE_SYSTEM_NAME STREQUAL "Android")
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211
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212 else()
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213 message("Unknown target platform: ${CMAKE_SYSTEM_NAME}")
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214 message(FATAL_ERROR "Support your platform here")
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215 endif()
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216
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217
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218 if (DEFINED ENABLE_PROFILING AND ENABLE_PROFILING)
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219 if (CMAKE_COMPILER_IS_GNUCXX)
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220 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pg")
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221 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pg")
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222 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pg")
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223 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -pg")
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224 set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -pg")
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225 else()
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226 message(FATAL_ERROR "Don't know how to enable profiling on your configuration")
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227 endif()
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228 endif()
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229
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230
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231 if (CMAKE_COMPILER_IS_GNUCXX)
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232 # "When creating a static library using binutils (ar) and there
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233 # exist a duplicate object name (e.g. a/Foo.cpp.o, b/Foo.cpp.o), the
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234 # resulting static library can end up having only one of the
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235 # duplicate objects. [...] This bug only happens if there are many
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236 # objects." The trick consists in replacing the "r" argument
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237 # ("replace") provided to "ar" (as used in CMake < 3.1) by the "q"
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238 # argument ("quick append"). This is because of the fact that CMake
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239 # will invoke "ar" several times with several batches of ".o"
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240 # objects, and using "r" would overwrite symbols defined in
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241 # preceding batches. https://cmake.org/Bug/view.php?id=14874
fd58eb5749ed CMake simplification using DownloadOrthancFramework.cmake
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
242 set(CMAKE_CXX_ARCHIVE_APPEND "<CMAKE_AR> <LINK_FLAGS> q <TARGET> <OBJECTS>")
fd58eb5749ed CMake simplification using DownloadOrthancFramework.cmake
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
243 endif()