Example of using xcodeproj

xcodeproj_build.rb

require_relative "../config.rb"
gem 'xcodeproj', '>=0.19.4'
require 'xcodeproj'

PROJECT = 'Unity-iPhone'
TARGET = 'Unity-iPhone'
LIBRARY = 'Libraries'

### Export
def exportUnityProject
	FileUtils.cd("#{UNITY_DEV_PATH}") do
		`#{UNITY_APP_PATH}/Contents/MacOS/Unity -batchmode -quit -executeMethod Builder.BuildiOS`
	end

	xcodeProjectPath = "#{UNITY_DEV_PATH}/Build/iOS"
end


### Patch
def exist_framework?(build_phase, name)
  build_phase.files.each do |file|
    return true if file.file_ref.name == "#{name}.framework"
  end
  false
end

def copy_library(name)
	from = "#{UNITY_DEV_PATH}/Assets/Plugins/iOS/#{name}.framework"
	to = "#{UNITY_DEV_PATH}/Build/iOS/#{LIBRARY}/#{name}.framework"
	FileUtils.copy_entry(from, to)
end

def add_system_frameworks(project, names, optional = false)
	project.targets.each do |target|
		next unless TARGET == target.name

		build_phase = target.frameworks_build_phase
		framework_group = project.frameworks_group

		names.each do |name|
			next if exist_framework?(build_phase, name)
			path = "System/Library/Frameworks/#{name}.framework"
			file_ref = framework_group.new_reference(path)
			file_ref.name = "#{name}.framework"
			file_ref.source_tree = 'SDKROOT'
			build_file = build_phase.add_file_reference(file_ref)
			if optional
				build_file.settings = { 'ATTRIBUTES' => ['Weak'] }
			end
		end
	end
end

def add_external_frameworks(project, names)
	project.targets.each do |target|
		next unless TARGET == target.name

		target.build_configurations.each do |configuration|
			configuration.build_settings['FRAMEWORK_SEARCH_PATHS'] = configuration.build_settings['LIBRARY_SEARCH_PATHS']
		end

		build_phase = target.frameworks_build_phase
		library_group = project.main_group.children.find {|child| child.path == LIBRARY}

		names.each do |name|
			next if exist_framework?(build_phase, name)
			copy_library(name)
			path = "#{UNITY_DEV_PATH}/Build/iOS/#{LIBRARY}/#{name}.framework"
			file_ref = library_group.new_reference(path)
			file_ref.name = "#{name}.framework"
			file_ref.source_tree = 'SOURCE_ROOT'
			build_phase.add_file_reference(file_ref)
		end
	end
end


def add_other_linker_flags(project, flags)
	project.targets.each do |target|
		next unless TARGET == target.name
		target.build_configurations.each do |configuration|
			flags.each do |flag|
				configuration.build_settings['OTHER_LDFLAGS'].push flag
			end
		end
	end
end

def patchXcodeProject(projectPath)
	project = Xcodeproj::Project.open "#{projectPath}/Unity-iPhone.xcodeproj"
	add_external_frameworks project, ["LineAdsSdk"]
	add_system_frameworks project, ["CoreTelephony"]
	add_system_frameworks project, ["AdSupport"], true

	add_other_linker_flags project, ["-ObjC", "-all_load"]

	project.save
end