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Simplify mruby build system
* Genericize cross compilation
* Clean mruby build artifacts with make/ninja clean
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CMakeLists.txt
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CMakeLists.txt
···
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set(MRUBY_DIR ${THIRDPARTY_DIR}/mruby)
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set(MRUBY_CONFIG ${CMAKE_SOURCE_DIR}/mruby/tic_default.rb)
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set(MRUBY_LIB ${MRUBY_DIR}/build/target/lib/libmruby.a)
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if(EMSCRIPTEN)
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set(MRUBY_TOOLCHAIN emscripten)
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set(MRUBY_CROSS_TOOLCHAIN emscripten)
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elseif(MSVC)
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if(MSVC)
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set(MRUBY_TOOLCHAIN visualcpp)
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elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
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set(MRUBY_TOOLCHAIN clang)
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else()
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set(MRUBY_TOOLCHAIN gcc)
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endif()
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message(NOTICE "\
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Caveat:\n\
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* mruby target (\"target\") will attempt to use the same toolchain as \
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CMake, namely \"${MRUBY_TOOLCHAIN}\".\n\
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* mruby bootstrap (\"host\") will automatically detect a usable toolchain, \
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which may be different than the one used by CMake.")
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ExternalProject_Add(mruby_vendor
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SOURCE_DIR ${MRUBY_DIR}
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BUILD_COMMAND
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${RAKE} "MRUBY_CONFIG=${MRUBY_CONFIG}"
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"TARGET_CC=${CMAKE_C_COMPILER}"
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"TARGET_CXX=${CMAKE_CXX_COMPILER}"
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"TARGET_LD=${CMAKE_C_LINK_EXECUTABLE}"
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"TARGET_AR=${CMAKE_AR}"
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"TARGET_CFLAGS=${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${BUILD_TYPE_UC}}"
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"TARGET_CXXFLAGS=${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${BUILD_TYPE_UC}}"
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"TARGET_LDFLAGS=${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_LINKER_FLAGS_${BUILD_TYPE_UC}}"
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"BUILD_TYPE=${BUILD_TYPE_UC}"
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"MRUBY_TOOLCHAIN=${MRUBY_TOOLCHAIN}"
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"MRUBY_CROSS_TOOLCHAIN=${MRUBY_CROSS_TOOLCHAIN}"
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INSTALL_COMMAND ""
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BUILD_BYPRODUCTS ${MRUBY_LIB}
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)
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set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES
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"${MRUBY_DIR}/build"
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"${MRUBY_DIR}/bin"
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)
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set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_CLEAN_FILES
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"${MRUBY_DIR}/build"
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"${MRUBY_DIR}/bin"
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)
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add_library(mruby STATIC IMPORTED GLOBAL)
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mruby/tic_default.rb
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mruby/tic_default.rb
···
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MRuby::Build.new do |conf|
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# load specific toolchain settings
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conf.toolchain
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# include the GEM box
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conf.gembox 'default'
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conf.enable_bintest
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conf.enable_test
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end
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MRuby::Toolchain.new('emscripten') do |conf|
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toolchain :clang
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conf.cc.command = ENV['TARGET_CC'] || 'emcc'
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conf.cxx.command = ENV['TARGET_CXX'] || 'emcc'
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conf.linker.command = ENV['TARGET_LD'] || 'emcc'
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conf.archiver.command = ENV['TARGET_AR'] || 'emar'
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end
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BuildClazz = (ENV['MRUBY_CROSS_TOOLCHAIN'] || '').empty? ? MRuby::Build : MRuby::CrossBuild
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MRuby::CrossBuild.new('target') do |conf|
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toolchain ENV['MRUBY_TOOLCHAIN']
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BuildClazz.new('target') do |conf|
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# load specific toolchain settings
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if (ENV['MRUBY_TOOLCHAIN'] || '').empty?
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conf.toolchain
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else
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toolchain ENV['MRUBY_TOOLCHAIN']
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end
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# include the GEM box
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conf.gembox File.expand_path('tic', File.dirname(__FILE__))
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# C compiler settings
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conf.cc do |cc|
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cc.command = ENV["TARGET_CC"] || 'cc'
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cc.flags = [ENV["TARGET_CFLAGS"] || %w()]
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unless ENV['VisualStudioVersion'] || ENV['VSINSTALLDIR']
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cc.flags << '-fPIC'
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end
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end
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# Linker settings
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conf.linker do |linker|
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linker.flags = [ENV['TARGET_LDFLAGS'] || []]
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linker.command = ENV['TARGET_LD'] || 'ld'
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linker.flags = [ENV['TARGET_LDFLAGS'] || %w()]
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end
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# file extensions
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conf.archiver do |archiver|
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archiver.command = ENV['TARGET_AR'] || 'ar'
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end
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conf.exts do |exts|
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exts.object = '.o'
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exts.library = '.a'
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# exts.executable = '' # '.exe' if Windows
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end
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# Turn on `enable_debug` for better debugging
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conf.enable_debug if /DEBUG/ =~ ENV["BUILD_TYPE"]
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conf.enable_bintest
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conf.enable_test