rakeでcoco2dx-3.0rc0用のstaticライブラリを作成する ref: http://qiita.com/g-1/items/01f6c430326dfd125af9

Rakefile

PROJECT_PATH = "../cocos2d/build/cocos2d_libs.xcodeproj"
TARGET_NAME="'build all libs iOS'"
OUTPUT_DEBUG="tmp/iphonesimulator"
OUTPUT_RELEASE="tmp/iphoneos"
OUTPUT_LIB="../lib"

desc "静的ライブラリをビルドします"
task "lib" do
    sh "xcodebuild -project #{PROJECT_PATH} -configuration Release -sdk iphonesimulator7.1 -target #{TARGET_NAME} TARGET_BUILD_DIR=../../build/#{OUTPUT_DEBUG} BUILT_PRODUCTS_DIR=../../build/#{OUTPUT_DEBUG} clean build"

    sh "xcodebuild -project #{PROJECT_PATH} -configuration Release -sdk iphoneos7.1 -target #{TARGET_NAME} TARGET_BUILD_DIR=../../build/#{OUTPUT_RELEASE} BUILT_PRODUCTS_DIR=../../build/#{OUTPUT_RELEASE} clean build"
end

desc "lipoコマンドで各デバイス向けの静的ライブラリをひとつのバイナリにします"
task "lipo" do

    Dir.glob("#{OUTPUT_RELEASE}/*"){|path|
        p path
        file = File.basename(path)

        sh "lipo '#{OUTPUT_DEBUG}/#{file}' '#{OUTPUT_RELEASE}/#{file}' -create -output '#{OUTPUT_LIB}/#{file}'"
    }
end