1 | class MRuby::Toolchain::Android
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2 |
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3 | DEFAULT_ARCH = 'armeabi' # TODO : Revise if arch should have a default
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4 |
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5 | DEFAULT_TOOLCHAIN = :clang
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6 |
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7 | DEFAULT_NDK_HOMES = %w{
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8 | /usr/local/opt/android-sdk/ndk-bundle
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9 | /usr/local/opt/android-ndk
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10 | %LOCALAPPDATA%/Android/android-sdk/ndk-bundle
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11 | %LOCALAPPDATA%/Android/android-ndk
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12 | ~/Library/Android/sdk/ndk-bundle
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13 | ~/Library/Android/ndk
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14 | }
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15 |
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16 | TOOLCHAINS = [:clang, :gcc]
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17 |
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18 | ARCHITECTURES = %w{
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19 | armeabi armeabi-v7a arm64-v8a
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20 | x86 x86_64
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21 | mips mips64
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22 | }
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23 |
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24 | class AndroidNDKHomeNotFound < StandardError
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25 | def message
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26 | <<-EOM
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27 | Couldn't find Android NDK Home.
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28 | Set ANDROID_NDK_HOME environment variable or set :ndk_home parameter
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29 | EOM
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30 | end
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31 | end
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32 |
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33 | class PlatformDirNotFound < StandardError
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34 | def message
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35 | <<-EOM
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36 | Couldn't find Android NDK platform directories.
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37 | Set ANDROID_PLATFORM environment variable or set :platform parameter
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38 | EOM
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39 | end
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40 | end
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41 |
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42 | attr_reader :params
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43 |
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44 | def initialize(params)
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45 | @params = params
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46 | end
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47 |
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48 | def bin_gcc(command)
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49 | command = command.to_s
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50 |
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51 | command = case arch
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52 | when /armeabi/ then 'arm-linux-androideabi-'
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53 | when /arm64-v8a/ then 'aarch64-linux-android-'
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54 | when /x86_64/ then 'x86_64-linux-android-'
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55 | when /x86/ then 'i686-linux-android-'
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56 | when /mips64/ then 'mips64el-linux-android-'
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57 | when /mips/ then 'mipsel-linux-android-'
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58 | end + command
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59 |
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60 | gcc_toolchain_path.join('bin', command).to_s
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61 | end
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62 |
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63 | def bin(command)
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64 | command = command.to_s
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65 | toolchain_path.join('bin', command).to_s
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66 | end
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67 |
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68 | def home_path
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69 | @home_path ||= Pathname(
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70 | params[:ndk_home] ||
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71 | ENV['ANDROID_NDK_HOME'] ||
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72 | DEFAULT_NDK_HOMES.find { |path|
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73 | path.gsub! '%LOCALAPPDATA%', ENV['LOCALAPPDATA'] || '%LOCALAPPDATA%'
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74 | path.gsub! '\\', '/'
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75 | path.gsub! '~', Dir.home || '~'
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76 | File.directory?(path)
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77 | } || raise(AndroidNDKHomeNotFound)
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78 | )
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79 | end
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80 |
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81 | def toolchain
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82 | @toolchain ||= params.fetch(:toolchain){ DEFAULT_TOOLCHAIN }
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83 | end
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84 |
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85 | def toolchain_path
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86 | @toolchain_path ||= case toolchain
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87 | when :gcc
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88 | gcc_toolchain_path
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89 | when :clang
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90 | home_path.join('toolchains', 'llvm' , 'prebuilt', host_platform)
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91 | end
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92 | end
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93 |
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94 | def gcc_toolchain_path
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95 | if @gcc_toolchain_path === nil then
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96 | prefix = case arch
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97 | when /armeabi/ then 'arm-linux-androideabi-'
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98 | when /arm64-v8a/ then 'aarch64-linux-android-'
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99 | when /x86_64/ then 'x86_64-'
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100 | when /x86/ then 'x86-'
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101 | when /mips64/ then 'mips64el-linux-android-'
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102 | when /mips/ then 'mipsel-linux-android-'
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103 | end
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104 |
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105 | test = case arch
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106 | when /armeabi/ then 'arm-linux-androideabi-*'
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107 | when /arm64-v8a/ then 'aarch64-linux-android-*'
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108 | when /x86_64/ then 'x86_64-*'
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109 | when /x86/ then 'x86-*'
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110 | when /mips64/ then 'mips64el-linux-android-*'
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111 | when /mips/ then 'mipsel-linux-android-*'
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112 | end
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113 |
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114 | gcc_toolchain_version = Dir[home_path.join('toolchains', test)].map{|t| t.match(/-(\d+\.\d+)$/); $1.to_f }.max
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115 | @gcc_toolchain_path = home_path.join('toolchains', prefix + gcc_toolchain_version.to_s, 'prebuilt', host_platform)
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116 | end
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117 | @gcc_toolchain_path
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118 | end
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119 |
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120 | def host_platform
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121 | @host_platform ||= case RUBY_PLATFORM
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122 | when /cygwin|mswin|mingw|bccwin|wince|emx/i
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123 | path = home_path.join('toolchains', 'llvm' , 'prebuilt', 'windows*')
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124 | Dir.glob(path.to_s){ |item|
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125 | next if File.file?(item)
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126 | path = Pathname(item)
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127 | break
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128 | }
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129 | path.basename
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130 | when /x86_64-darwin/i
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131 | 'darwin-x86_64'
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132 | when /darwin/i
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133 | 'darwin-x86'
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134 | when /x86_64-linux/i
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135 | 'linux-x86_64'
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136 | when /linux/i
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137 | 'linux-x86'
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138 | else
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139 | raise NotImplementedError, "Unknown host platform (#{RUBY_PLATFORM})"
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140 | end
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141 | end
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142 |
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143 | def arch
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144 | @arch ||= (params[:arch] || ENV['ANDROID_ARCH'] || DEFAULT_ARCH).to_s
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145 | end
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146 |
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147 | def sysroot
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148 | @sysroot ||= home_path.join('platforms', platform,
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149 | case arch
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150 | when /armeabi/ then 'arch-arm'
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151 | when /arm64-v8a/ then 'arch-arm64'
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152 | when /x86_64/ then 'arch-x86_64'
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153 | when /x86/ then 'arch-x86'
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154 | when /mips64/ then 'arch-mips64'
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155 | when /mips/ then 'arch-mips'
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156 | end
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157 | ).to_s
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158 | end
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159 |
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160 | def platform
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161 | if @platform === nil then
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162 | @platform = params[:platform] || ENV['ANDROID_PLATFORM'] || nil
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163 | if @platform === nil
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164 | Dir.glob(home_path.join('platforms/android-*').to_s){ |item|
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165 | next if File.file?(item)
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166 | if @platform === nil
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167 | @platform = Integer(item.rpartition('-')[2])
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168 | else
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169 | platform = Integer(item.rpartition('-')[2])
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170 | @platform = platform > @platform ? platform : @platform
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171 | end
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172 | }
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173 | if @platform === nil
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174 | raise(PlatformDirNotFound)
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175 | else
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176 | @platform = "android-#{@platform}"
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177 | end
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178 | end
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179 | end
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180 | if Integer(@platform.rpartition('-')[2]) < 21
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181 | case arch
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182 | when /arm64-v8a/, /x86_64/, /mips64/
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183 | raise NotImplementedError, "Platform (#{@platform}) has no implementation for architecture (#{arch})"
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184 | end
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185 | end
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186 | @platform
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187 | end
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188 |
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189 | def armeabi_v7a_mfpu
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190 | @armeabi_v7a_mfpu ||= (params[:mfpu] || 'vfpv3-d16').to_s
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191 | end
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192 |
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193 | def armeabi_v7a_mfloat_abi
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194 | @armeabi_v7a_mfloat_abi ||= (params[:mfloat_abi] || 'softfp').to_s
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195 | end
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196 |
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197 | def no_warn_mismatch
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198 | if %W(soft softfp).include? armeabi_v7a_mfloat_abi
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199 | ''
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200 | else
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201 | ',--no-warn-mismatch'
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202 | end
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203 | end
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204 |
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205 | def cc
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206 | case toolchain
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207 | when :gcc then bin_gcc('gcc')
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208 | when :clang then bin('clang')
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209 | end
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210 | end
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211 |
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212 | def ar
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213 | case toolchain
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214 | when :gcc then bin_gcc('ar')
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215 | when :clang then bin_gcc('ar')
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216 | end
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217 | end
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218 |
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219 | def ctarget
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220 | flags = []
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221 |
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222 | case toolchain
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223 | when :gcc
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224 | case arch
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225 | when /armeabi-v7a/ then flags += %W(-march=armv7-a)
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226 | when /armeabi/ then flags += %W(-march=armv5te)
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227 | when /arm64-v8a/ then flags += %W(-march=armv8-a)
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228 | when /x86_64/ then flags += %W(-march=x86-64)
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229 | when /x86/ then flags += %W(-march=i686)
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230 | when /mips64/ then flags += %W(-march=mips64r6)
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231 | when /mips/ then flags += %W(-march=mips32)
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232 | end
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233 | when :clang
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234 | case arch
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235 | when /armeabi-v7a/ then flags += %W(-target armv7-none-linux-androideabi)
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236 | when /armeabi/ then flags += %W(-target armv5te-none-linux-androideabi)
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237 | when /arm64-v8a/ then flags += %W(-target aarch64-none-linux-android)
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238 | when /x86_64/ then flags += %W(-target x86_64-none-linux-android)
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239 | when /x86/ then flags += %W(-target i686-none-linux-android)
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240 | when /mips64/ then flags += %W(-target mips64el-none-linux-android)
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241 | when /mips/ then flags += %W(-target mipsel-none-linux-android)
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242 | end
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243 | end
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244 |
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245 | case arch
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246 | when /armeabi-v7a/ then flags += %W(-mfpu=#{armeabi_v7a_mfpu} -mfloat-abi=#{armeabi_v7a_mfloat_abi})
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247 | when /armeabi/ then flags += %W(-mtune=xscale -msoft-float)
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248 | when /arm64-v8a/ then flags += %W()
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249 | when /x86_64/ then flags += %W()
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250 | when /x86/ then flags += %W()
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251 | when /mips64/ then flags += %W(-fmessage-length=0)
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252 | when /mips/ then flags += %W(-fmessage-length=0)
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253 | end
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254 |
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255 | flags
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256 | end
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257 |
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258 | def cflags
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259 | flags = []
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260 |
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261 | flags += %W(-MMD -MP -D__android__ -DANDROID --sysroot="#{sysroot}")
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262 | flags += ctarget
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263 | case toolchain
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264 | when :gcc
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265 | when :clang
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266 | flags += %W(-gcc-toolchain "#{gcc_toolchain_path.to_s}" -Wno-invalid-command-line-argument -Wno-unused-command-line-argument)
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267 | end
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268 | flags += %W(-fpic -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes)
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269 |
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270 | flags
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271 | end
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272 |
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273 | def ldflags
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274 | flags = []
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275 |
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276 | flags += %W(--sysroot="#{sysroot}")
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277 |
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278 | flags
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279 | end
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280 |
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281 | def ldflags_before_libraries
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282 | flags = []
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283 |
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284 | case toolchain
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285 | when :gcc
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286 | case arch
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287 | when /armeabi-v7a/ then flags += %W(-Wl#{no_warn_mismatch})
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288 | end
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289 | when :clang
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290 | flags += %W(-gcc-toolchain "#{gcc_toolchain_path.to_s}")
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291 | case arch
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292 | when /armeabi-v7a/ then flags += %W(-target armv7-none-linux-androideabi -Wl,--fix-cortex-a8#{no_warn_mismatch})
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293 | when /armeabi/ then flags += %W(-target armv5te-none-linux-androideabi)
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294 | when /arm64-v8a/ then flags += %W(-target aarch64-none-linux-android)
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295 | when /x86_64/ then flags += %W(-target x86_64-none-linux-android)
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296 | when /x86/ then flags += %W(-target i686-none-linux-android)
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297 | when /mips64/ then flags += %W(-target mips64el-none-linux-android)
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298 | when /mips/ then flags += %W(-target mipsel-none-linux-android)
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299 | end
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300 | end
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301 | flags += %W(-no-canonical-prefixes)
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302 |
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303 | flags
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304 | end
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305 | end
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306 |
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307 | MRuby::Toolchain.new(:android) do |conf, params|
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308 | android = MRuby::Toolchain::Android.new(params)
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309 |
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310 | toolchain android.toolchain
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311 |
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312 | [conf.cc, conf.cxx, conf.objc, conf.asm].each do |cc|
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313 | cc.command = android.cc
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314 | cc.flags = android.cflags
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315 | end
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316 |
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317 | conf.archiver.command = android.ar
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318 | conf.linker.command = android.cc
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319 | conf.linker.flags = android.ldflags
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320 | conf.linker.flags_before_libraries = android.ldflags_before_libraries
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321 | end
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