made build script python3 copatible

build.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python2.7
+#!/usr/bin/python
 import os, sys, shutil, re, textwrap
 
 COMPILER = "i586-pc-msdosdjgpp-gcc"
@@ -61,18 +61,19 @@ def main():
             "outfile": BIN_DIR + "/" + BIN_NAME,
             "srcfiles": " ".join(cfiles),
             "libs": " ".join(map(lambda x: "-l" + x, DLIBS)),
-      "argv"      : " ".join(sys.argv[1:])
-    })
+            "argv": " ".join(sys.argv[1:]),
+        },
+    )
 
-  print "compiling..."
+    print("compiling...")
+    print("  {}".format(cmd))
     res = os.system(cmd)
 
-  print "deleting temporary files..."
+    print("deleting temporary files...")
     if os.path.exists(TEMPSRC_DIR):
         shutil.rmtree(TEMPSRC_DIR)
 
-  print "done" + (" with errors" if res else "")
-
+    print("done" + (" with errors" if res else ""))
 
 
 if __name__ == "__main__":