Rakefile in ruby-vpi-20.0.0 vs Rakefile in ruby-vpi-21.0.0

@@ -85,11 +85,11 @@
   desc "Build the documentation."
   task :doc
 
   # the user guide
   file 'doc/guide.html' => 'doc/guide.erb' do |t|
-    sh "gerbil html #{t.prerequisites} > #{t.name}"
+    sh "gerbil -u html #{t.prerequisites} > #{t.name}"
   end
   task :doc => 'doc/guide.html'
   CLOBBER.include 'doc/guide.html'
 
 # API reference
@@ -114,11 +114,11 @@
           f.puts "# Returns the #{const} constant: #{info}"
           f.puts "def self.#{var}; end"
         end
 
         # functions
-        body.scan /^XXTERN\s+(\S+\s+\*?)(\S+)\s+PROTO_PARAMS\(\((.*?)\)\);/m do |type, func, args|
+        body.scan %r{^XXTERN\s+(\S+\s+\*?)(\S+)\s+PROTO_PARAMS\(\((.*?)\)\);}m do |type, func, args|
           meth = func.gsub(/\W/, '')
           args = args.gsub(/[\r\n]/, ' ')
 
           [
             [ /PLI_BYTE8(\s*)\*(\s*data)/ , 'Object\1\2'  ],
@@ -185,10 +185,9 @@
     s.files       = FileList['**/*'].exclude('_darcs', DYNAMIC_DOCS)
     s.autorequire = s.name
     s.extensions << 'gem_extconf.rb'
     s.executables = s.name
 
-    s.requirements << "POSIX threads library"
     s.requirements << "C language compiler"
 
     s.add_dependency 'rake',       '>= 0.7.0'
     s.add_dependency 'rspec',      '>= 1.0.0'
     s.add_dependency 'rcov',       '>= 0.7.0'