Removed need for gcc as a dependency for debian packages.

Rakefile

@@ -7,6 +7,28 @@ Rake::TestTask.new do |t|
   t.test_files = FileList["test/**/t_*.rb"]
 end
 
-task :gem do
+desc "Create the size_t size macro for c_struct"
+file 'lib/linux/c_struct_sizeof_size_t.rb' do |t|
+  begin
+    sz = Integer(`echo __SIZEOF_SIZE_T__ | /usr/bin/gcc -E -P -`)
+    File.open(t.name, 'w+') do |fh|
+      fh.puts "module Linux ; class CStruct ; SIZEOF_SIZE_T = #{sz} ; end ; end"
+    end
+  rescue
+    rm_f t.name
+  end
+end
+
+desc "Package a gem"
+task :gem do 
+  #
+  # FIXME. If using a gem, fall back on GCC to determine sizeof size_t.
+  #
+  rm_f "lib/linux/c_struct_sizeof_size_t.rb"
   sh "gem build netlinkrb.gemspec"
 end
+
+desc "clean up"
+task :clean do
+  rm_f "lib/linux/c_struct_sizeof_size_t.rb"
+end