Chagne bison.rb to install stripped binaries and add check methods

packages/bison.rb

@@ -3,19 +3,27 @@ require 'package'
 class Bison < Package
   description 'Bison is a general-purpose parser generator that converts an annotated context-free grammar into a deterministic LR or generalized LR (GLR) parser employing LALR(1) parser tables.'
   homepage 'http://www.gnu.org/software/bison/'
-  version '3.0.4'
-  source_url 'http://mirror.keystealth.org/gnu/bison/bison-3.0.4.tar.gz'
-  source_sha1 'ec1f2706a7cfedda06d29dc394b03e092a1e1b74'
+  version '3.0.4-1'
+  source_url 'http://mirror.keystealth.org/gnu/bison/bison-3.0.4.tar.xz'
+  source_sha1 '8270497aad88c7dd4f2c317298c50513fb0c3c8e'
 
-  depends_on 'diffutils'
-  depends_on 'm4'
+  depends_on 'diffutils' => :build
+  depends_on 'm4' => :build
+  depends_on 'perl' => :build
+  # `make check` requires flex, but it causes dependency loop.  so, commenting it out.
+  # depends_on 'flex' => :build
 
   def self.build
     system './configure --prefix=/usr/local'
     system "make"
+    system "find . -name '*.a' -print | xargs strip -S"
   end
 
   def self.install
-    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install-strip"
+  end
+
+  def self.check
+    system "make check"
   end
 end