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#!/usr/bin/ruby

# This script looks up an executable's list of shared libraries, copies

# non-standard ones (ie. anything not under /usr or /System/) into the target's

# bundle and updates the executable install_name to point to the "packaged"

# version.

# Usage:

# Add the script as a Run Script build phase in the target using Xcode.

# FIXMEs:

# - only handles dylibs

# - only tested against a framework target

# - doesn't care about codesigning

require 'fileutils'

require 'ostruct'

def err(msg)

puts "error: " + msg

exit 1

end

def warn(msg)

puts "warning: " + msg

end

def note(msg)

puts "note: " + msg

end

envvars = %w(

TARGET_BUILD_DIR

EXECUTABLE_PATH

FRAMEWORKS_FOLDER_PATH

)

envvars.each do |var|

raise "Must be run in an Xcode Run Phase" unless ENV[var]

Kernel.const_set var, ENV[var]

end

TARGET_EXECUTABLE_PATH = File.join(TARGET_BUILD_DIR, EXECUTABLE_PATH)

TARGET_FRAMEWORKS_PATH = File.join(TARGET_BUILD_DIR, FRAMEWORKS_FOLDER_PATH)

def extract_link_dependencies(executable)

deps = `otool -L "#{executable}"`

lines = deps.split("\n").map(&:strip)

lines.shift

# lines.shift

lines.map do |dep|

path, compat, current = /^(.*) \(compatibility version (.*), current version (.*)\)$/.match(dep)[1..3]

err "Failed to parse #{dep}" if path.nil?

dep = OpenStruct.new

dep.is_self = (File.basename(path) == File.basename(executable))

dep.executable = executable

dep.install_name = path

dep.current_version = current

dep.compat_version = compat

dep.type = File.extname(path)

dep.name = File.basename(path)

dep.is_packaged = !!(dep.install_name =~ /^@rpath/)

dep.path = if dep.install_name =~ /^@rpath/

File.join(TARGET_FRAMEWORKS_PATH, dep.name)

else

dep.install_name

end

dep

end

end

def repackage_dependency(dep)

return if dep.is_self or dep.is_packaged or dep.path =~ /^(\/usr\/lib|\/System\/Library)/

note "Packaging #{dep.name}…"

FileUtils.mkdir(TARGET_FRAMEWORKS_PATH) unless Dir.exist?(TARGET_FRAMEWORKS_PATH)

packaged_path = File.join(TARGET_FRAMEWORKS_PATH, dep.name)

case dep.type

when ".dylib"

if File.exist? packaged_path

warn "#{dep.path} already in Frameworks directory, removing"

FileUtils.rm packaged_path

end

note "Copying #{dep[:path]} to TARGET_FRAMEWORKS_PATH"

FileUtils.cp dep[:path], TARGET_FRAMEWORKS_PATH

FileUtils.chmod "u=rw", packaged_path

out = `install_name_tool -change "#{dep.path}" "@rpath/#{dep.name}" "#{dep.executable}"`

if $? != 0

err "install_name_tool failed with error #{$?}:\n#{out}"

end

dep.path = packaged_path

dep.install_name = "@rpath/#{dep.name}"

dep.is_packaged = true

else

warn "Unhandled type #{dep.type} for #{dep.path}, ignoring"

end

end

def fix_install_id(dep)

note "Fixing #{dep.name} install_name id…"

out = `install_name_tool -id "@rpath/#{dep.name}" "#{dep.executable}"`

if $? != 0

err "install_name_tool failed with error #{$?}:\n#{out}"

end

end

deps = extract_link_dependencies(TARGET_EXECUTABLE_PATH)

while (dep = deps.shift) do

repackage_dependency dep

fix_install_id dep if dep.is_self and dep.executable != TARGET_EXECUTABLE_PATH

deps += extract_link_dependencies(dep[:path]) if dep.is_packaged and not dep.is_self

end

note "Packaging done"

exit 0