Merge pull request #3455 from crimsonwoods/fix-android-build-script

Update android build script.

examples/targets/build_config_android_arm64-v8a.rb

@@ -0,0 +1,26 @@
+MRuby::Build.new do |conf|
+
+  # Gets set by the VS command prompts.
+  if ENV['VisualStudioVersion'] || ENV['VSINSTALLDIR']
+    toolchain :visualcpp
+  else
+    toolchain :gcc
+  end
+
+  enable_debug
+
+  # include the default GEMs
+  conf.gembox 'default'
+end
+
+# Requires Android NDK r13 or later.
+MRuby::CrossBuild.new('android-arm64-v8a') do |conf|
+  params = { 
+    :arch => 'arm64-v8a', 
+    :platform => 'android-24',
+    :toolchain => :clang,
+  }
+  toolchain :android, params
+
+  conf.gembox 'default'
+end

examples/targets/build_config_android_armeabi.rb

@@ -0,0 +1,26 @@
+MRuby::Build.new do |conf|
+
+  # Gets set by the VS command prompts.
+  if ENV['VisualStudioVersion'] || ENV['VSINSTALLDIR']
+    toolchain :visualcpp
+  else
+    toolchain :gcc
+  end
+
+  enable_debug
+
+  # include the default GEMs
+  conf.gembox 'default'
+end
+
+# Requires Android NDK r13 or later.
+MRuby::CrossBuild.new('android-armeabi') do |conf|
+  params = { 
+    :arch => 'armeabi', 
+    :platform => 'android-24',
+    :toolchain => :clang,
+  }
+  toolchain :android, params
+
+  conf.gembox 'default'
+end

tasks/toolchains/android.rake

@@ -203,23 +203,53 @@ Set ANDROID_PLATFORM environment variable or set :platform parameter
   def cflags
     flags = []
 
-    flags += %W(-D__android__ --sysroot="#{sysroot}")
+    flags += %W(-MMD -MP)
+    flags += %W(-D__android__ -DANDROID --sysroot="#{sysroot}")
     case toolchain
     when :gcc
-      flags += %W(-mandroid)
       case arch
-      when /armeabi-v7a/  then flags += %W(-march=armv7-a)
-      when /armeabi/      then flags += %W(-march=armv5te)
-      when /arm64-v8a/    then flags += %W(-march=armv8-a)
+      when /armeabi-v7a/  then flags += %W(-march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=softfp -fpic)
+      when /armeabi/      then flags += %W(-march=armv5te -mtune=xscale -msoft-float -fpic)
+      when /arm64-v8a/    then flags += %W(-march=armv8-a -fpic)
       when /x86_64/       then flags += %W(-march=x86-64)
       when /x86/          then flags += %W(-march=i686)
-      when /mips64/       then flags += %W(-march=mips64)
-      when /mips/         then flags += %W(-march=mips32)
+      when /mips64/       then flags += %W(-march=mips64r6 -fmessage-length=0 -fpic)
+      when /mips/         then flags += %W(-march=mips32 -fmessage-length=0 -fpic)
       end
     when :clang
       flags += %W(-gcc-toolchain "#{gcc_toolchain_path.to_s}")
       case arch
-      when /armeabi-v7a/  then flags += %W(-target armv7-none-linux-androideabi)
+      when /armeabi-v7a/  then flags += %W(-target armv7-none-linux-androideabi -fpic)
+      when /armeabi/      then flags += %W(-target armv5te-none-linux-androideabi -fpic)
+      when /arm64-v8a/    then flags += %W(-target aarch64-none-linux-android -fpic)
+      when /x86_64/       then flags += %W(-target x86_64-none-linux-android -fPIC)
+      when /x86/          then flags += %W(-target i686-none-linux-android -fPIC)
+      when /mips64/       then flags += %W(-target mips64el-none-linux-android -fmessage-length=0 -fpic)
+      when /mips/         then flags += %W(-target mipsel-none-linux-android -fmessage-length=0 -fpic)
+      end
+      flags += %W(-Wno-invalid-command-line-argument -Wno-unused-command-line-argument)
+    end
+    flags += %W(-ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes)
+
+    flags
+  end
+
+  def ldflags
+    flags = []
+
+    flags += %W(--sysroot="#{sysroot}")
+
+    flags
+  end
+
+  def ldflags_before_libraries
+    flags = []
+
+    case toolchain
+    when :clang
+      flags += %W(-gcc-toolchain "#{gcc_toolchain_path.to_s}")
+      case arch
+      when /armeabi-v7a/  then flags += %W(-target armv7-none-linux-androideabi -Wl,--fix-cortex-a8)
       when /armeabi/      then flags += %W(-target armv5te-none-linux-androideabi)
       when /arm64-v8a/    then flags += %W(-target aarch64-none-linux-android)
       when /x86_64/       then flags += %W(-target x86_64-none-linux-android)
@@ -228,10 +258,10 @@ Set ANDROID_PLATFORM environment variable or set :platform parameter
       when /mips/         then flags += %W(-target mipsel-none-linux-android)
       end
     end
+    flags += %W(-no-canonical-prefixes)
 
     flags
   end
-
 end
 
 MRuby::Toolchain.new(:android) do |conf, params|
@@ -246,5 +276,6 @@ MRuby::Toolchain.new(:android) do |conf, params|
 
   conf.archiver.command = android.ar
   conf.linker.command = android.cc
-  conf.linker.flags = []
+  conf.linker.flags = android.ldflags
+  conf.linker.flags_before_libraries = android.ldflags_before_libraries
 end