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niklasfrykholm

Untitled

Dec 28th, 2011
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  1. # This ruby program will patch the linker executable (link.exe)
  2. # so that linker warning LNK4099 is ignorable.
  3. #
  4. # Reference: http://www.bottledlight.com/docs/lnk4099.html
  5.  
  6. require "fileutils"
  7.  
  8. def link_exes()
  9.     res = []
  10.     res << File.join(ENV["VS90COMNTOOLS"], "../../VC/bin/link.exe") if ENV["VS90COMNTOOLS"]
  11.     res << File.join(ENV["VS100COMNTOOLS"], "../../VC/bin/link.exe") if ENV["VS100COMNTOOLS"]
  12.     res << File.join(ENV["XEDK"], "bin/win32/link.exe") if ENV["XEDK"]
  13.     return res
  14. end
  15.  
  16. def patch_link_exe(exe)
  17.     data = nil
  18.     File.open(exe, "rb") {|f| data = f.read}
  19.     unpatched = [4088, 4099, 4105].pack("III")
  20.     patched = [4088, 65535, 4105].pack("III")
  21.  
  22.     if data.scan(patched).size > 0
  23.         puts "* Already patched #{exe}"
  24.         return
  25.     end
  26.  
  27.     num_unpatched = data.scan(unpatched).size
  28.     raise "Multiple patch locations in #{exe}" if num_unpatched > 1
  29.     raise "Patch location not found in #{exe}" if num_unpatched == 0
  30.  
  31.     offset = data.index(unpatched)
  32.     puts "* Found patch location #{exe}:#{offset}"
  33.     bak = exe + "-" + Time.now.strftime("%y%m%d-%H%M%S") + ".bak"
  34.     puts "  Creating backup #{bak}"
  35.     FileUtils.cp(exe, bak)
  36.     puts "  Patching exe"
  37.     data[offset,unpatched.size] = patched
  38.     File.open(exe, "wb") {|f| f.write(data)}
  39.     return true
  40. end
  41.  
  42. link_exes.each do |exe|
  43.     patch_link_exe(exe)
  44. end
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