+_inst_pp_col_max = 80
+_inst_pp_col = 0
+def _install_pretty_print(item):
+ """Pretty print an install item. Enforce maximum line width."""
+ global _inst_pp_col
+ if item is None:
+ _inst_pp_col = 0
+ return
+ _inst_pp_col += len(item)
+ if _inst_pp_col > _inst_pp_col_max:
+ print()
+ _inst_pp_col = len(item)
+ print(item, end = "")
+
+def install(srcdir, dstdir, s):