fix_loader_path.rb

#!/usr/bin/ruby

#  fix_loader_path.rb
#  Fix the install path of the matlab dylibs to relfect their location in the final package
#
#  Created by Jake TM Pearce on 27/06/2011.
#  Copyright 2011. All rights reserved.

Dir.chdir("#{ARGV[0]}/#{ARGV[1]}/Contents/Frameworks")

# For each dylib
Dir.glob("*.dylib*") {|fileName|

    # Check it's not a symlink
    if File.symlink?(fileName) == false
        
        puts("Got " + fileName)
        
        # Find the dylibs it links to.
        refList = %x[otool -L -X #{fileName}]
        refList = refList.split(/\n/)
        
        File.chmod(0777, fileName)
        
        refList.each do |ref|
            
            # Move @loader_path to ../Frameworks
            if ref =~ /\t@loader_path\/(lib.+?)\s/
                if $1 == fileName
                    %x[install_name_tool -id "@loader_path/../Frameworks/#{$1}" #{fileName}]
                end
                
                puts "install_name_tool -change \"@loader_path/#{$1}\" \"@loader_path/../Frameworks/#{$1}\" #{fileName}"
                %x[install_name_tool -change "@loader_path/#{$1}" "@loader_path/../Frameworks/#{$1}" #{fileName}]
            end
            
            if ref =~ /\t(lib.+?)\s/
                puts "install_name_tool -change \"#{$1}\" \"@loader_path/../Frameworks/#{$1}\" #{fileName}"
                %x[install_name_tool -change "#{$1}" "@loader_path/../Frameworks/#{$1}" #{fileName}]
            end

        end
        
        File.chmod(0444, fileName)
        
    end
}

# Now - because we linked before the dylibs were copied and we changed them, we have to alter the install name in the binary
Dir.chdir("../MacOS")

fileName = ARGV[2]

File.chmod(0777, fileName) 
refList = %x[otool -L -X #{fileName}]

puts("Fixing: \n" + refList)

refList = refList.split(/\n/)

refList.each do |ref|
    # Move @loader_path to ../Frameworks
    if ref =~ /\t@loader_path\/(lib.+?)\s/

        puts "install_name_tool -change \"@loader_path/#{$1}\" \"@loader_path/../Frameworks/#{$1}\" #{fileName}"
        %x[install_name_tool -change "@loader_path/#{$1}" "@loader_path/../Frameworks/#{$1}" #{fileName}]
    end
end

File.chmod(0444, fileName)