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# Download and unarchive latest Android NDK from https://developer.android.com/tools/sdk/ndk/index.html
# Make custom standalone toolchain as described here (android_ndk/docs/STANDALONE-TOOLCHAIN.html)
# Please export custom standalone toolchain path
# export ANDROID_STANDALONE_TOOLCHAIN=/tmp/android-14-toolchain
# Add to your build_config.rb
# MRuby::CrossBuild.new('androideabi') do |conf|
# toolchain :androideabi
# end
MRuby::Toolchain.new(:androideabi) do |conf|
toolchain :gcc
DEFAULT_ANDROID_TOOLCHAIN = 'gcc'
DEFAULT_ANDROID_TARGET_ARCH = 'arm'
DEFAULT_ANDROID_TARGET_ARCH_ABI = 'armeabi'
GCC_COMMON_CFLAGS = %W(-ffunction-sections -funwind-tables -fstack-protector)
GCC_COMMON_LDFLAGS = %W()
# An environment variable 'ANDROID_STANDALONE_TOOLCHAIN' must be set a path to toolchains.
ANDROID_STANDALONE_TOOLCHAIN = ENV['ANDROID_STANDALONE_TOOLCHAIN']
SYSROOT = ENV['ANDROID_STANDALONE_TOOLCHAIN'] + '/sysroot'
ANDROID_TARGET_ARCH = ENV['ANDROID_TARGET_ARCH'] || DEFAULT_ANDROID_TARGET_ARCH
ANDROID_TOOLCHAIN = ENV['ANDROID_TOOLCHAIN'] || DEFAULT_ANDROID_TOOLCHAIN
case ANDROID_TARGET_ARCH.downcase
when 'arch-arm', 'arm' then
toolchain_prefix = 'arm-linux-androideabi-'
when 'arch-x86', 'x86' then
toolchain_prefix = 'i686-linux-android-'
when 'arch-mips', 'mips' then
toolchain_prefix = 'mipsel-linux-android-'
else
# Any other architectures are not supported by Android NDK.
# Notify error.
end
case ANDROID_TOOLCHAIN.downcase
when 'gcc' then
ANDROID_CC = ANDROID_STANDALONE_TOOLCHAIN + '/bin/' + toolchain_prefix + 'gcc'
ANDROID_LD = ANDROID_STANDALONE_TOOLCHAIN + '/bin/' + toolchain_prefix + 'gcc'
ANDROID_AR = ANDROID_STANDALONE_TOOLCHAIN + '/bin/' + toolchain_prefix + 'ar'
ANDROID_CFLAGS = GCC_COMMON_CFLAGS + %W(-mandroid --sysroot=#{SYSROOT})
ANDROID_LDFLAGS = GCC_COMMON_LDFLAGS + %W(-mandroid --sysroot=#{SYSROOT})
when 'clang' then
# clang is not supported yet.
when 'clang31', 'clang3.1' then
# clang is not supported yet.
else
# Any other toolchains are not supported by Android NDK.
# Notify error.
end
[conf.cc, conf.cxx, conf.objc, conf.asm].each do |cc|
cc.command = ENV['CC'] || ANDROID_CC
cc.flags = [ENV['CFLAGS'] || ANDROID_CFLAGS]
end
conf.linker.command = ENV['LD'] || ANDROID_LD
conf.linker.flags = [ENV['LDFLAGS'] || ANDROID_LDFLAGS]
conf.archiver.command = ENV['AR'] || ANDROID_AR
end
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