RubyMotion

To install the OS X 10.7 SDK, download Xcode 4.3.3 and copy the SDK to Xcode 5. E.g.:

$ [sudo] cp -R /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs
To install the iOS 6.1 SDK, download Xcode 4.6.3 and copy the SDK to Xcode 5. E.g.:

$ [sudo] cp -R /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs

Clone RubyMotion source

$ git clone git@github.com:lrz/RubyMotion.git

Set up LLVM

$ svn checkout https://llvm.org/svn/llvm-project/llvm/branches/release_33 llvm-3.3
$ cd llvm-3.3 
$ patch -p0 < /path/to/RubyMotionRepository/llvm.patch
$ env UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" CC=/usr/bin/gcc CXX=/usr/bin/g++ ./configure --enable-bindings=none --enable-optimized --with-llvmgccdir=/tmp
$ env UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" CC=/usr/bin/gcc CXX=/usr/bin/g++ make
$ sudo env UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" CC=/usr/bin/gcc CXX=/usr/bin/g++ make install

Set up RubyMotion

$ cd /path/to/RubyMotionRepository
$ git submodule update --init
$ cd vm; git checkout master; cd ..
$ bundle install

How to debug on RubyMotion app

Build RubyMotion as following (enable DEBUG environment variable)

$ DEBUG=true rake
$ sudo rake install

Debug on RubyMotion app

$ rake debug=1 no_continue=1

Or, debug on RubyMotion app in iOS device

$ rake device debug=1 no_continue=1