use vendor sources to compile

ext/extconf.rb

@@ -1,39 +1,30 @@
 require 'mkmf'
 require 'fileutils'
 
-unless have_library 'snappy_ext'
-  dst = File.dirname File.expand_path __FILE__
-
-  tar = 'tar'
-  tar = 'gnutar' if find_executable 'gnutar'
-
-  ver = "1.1.1"
-  src = "snappy-#{ver}"
-
-  FileUtils.rm_rf File.join dst, src
-  system "curl -s http://snappy.googlecode.com/files/#{src}.tar.gz | #{tar} xz"
-
-  src = File.join dst, src
-
-  Dir.chdir src do
-    system "./configure --disable-option-checking --disable-dependency-tracking --disable-gtest --without-gflags"
+unless have_library 'snappy'
+  # build vendor/snappy
+  pwd = File.dirname File.expand_path __FILE__
+  dir = File.join pwd, '..', 'vendor', 'snappy'
+
+  Dir.chdir dir do
+    system './autogen.sh'
+    system './configure --disable-option-checking --disable-dependency-tracking --disable-gtest --without-gflags'
   end
 
-  %w(
-config.h
-snappy-c.cc
-snappy-c.h
-snappy-internal.h
-snappy-sinksource.cc
-snappy-sinksource.h
-snappy-stubs-internal.cc
-snappy-stubs-internal.h
-snappy-stubs-public.h
-snappy.cc
-snappy.h
-  ).each do |file|
-    FileUtils.copy File.join(src, file), File.join(dst, file) if FileTest.exist? File.join(src, file)
-  end
+  src = %w(
+   config.h
+   snappy-c.cc
+   snappy-c.h
+   snappy-internal.h
+   snappy-sinksource.cc
+   snappy-sinksource.h
+   snappy-stubs-internal.cc
+   snappy-stubs-internal.h
+   snappy-stubs-public.h
+   snappy.cc
+   snappy.h
+  ).map { |e| File.join dir, e }
+  FileUtils.cp src, pwd, :verbose => true
 end
 
 create_makefile 'snappy_ext'