got an initial build script.

bild.py

@@ -0,0 +1,36 @@
+import sys
+import os
+sys.path.append(os.path.abspath("/Users/parrt/github/bild"))
+
+from bilder import *
+
+VERSION = 4.4
+
+#CLASSPATH = JARCACHE+"/*" +os.pathsep+ os.environ['CLASSPATH']
+
+def parsers():
+    antlr3("tool/src/org/antlr/v4/parse", "gen", package="org.antlr.v4.parse")
+    antlr3("tool/src/org/antlr/v4/codegen", "gen", package="org.antlr.v4.codegen", args=["-lib","tool/src/org/antlr/v4/parse"])
+    antlr4("runtime/Java/src/org/antlr/v4/runtime/tree/xpath", "gen", package="org.antlr.v4.runtime.tree.xpath")
+
+def compile():
+	require(parsers)
+	javac("src/java", "out")
+	javac("gen", "out")
+
+def mkjar():
+	require(compile)
+	copytree(src="resources", dst="out/resources")
+	manifest = """Version: %s
+Main-Class: org.foo.Blort
+""" % VERSION
+	jar("dist/app.jar", srcdir="out", manifest=manifest)
+
+def all():
+	mkjar()
+
+def clean():
+	rmdir("out")
+	rmdir("gen")
+
+parsers()