lib/autoproj/cli/cache.rb in autoproj-2.0.0.b7 vs lib/autoproj/cli/cache.rb in autoproj-2.0.0.rc1

@@ -6,12 +6,17 @@
         class Cache < InspectionTool
             def validate_options(argv, options = Hash.new)
                 argv, options = super
 
                 if argv.empty?
-                    raise ArgumentError, "expected one cache directory as argument"
+                    default_cache_dirs = Autobuild::Importer.default_cache_dirs
+                    if !default_cache_dirs || default_cache_dirs.empty?
+                        raise ArgumentError, "no cache directory defined with e.g. the AUTOBUILD_CACHE_DIR environment variable, expected one cache directory as argument"
+                    end
+                    Autoproj.warn "using cache directory #{default_cache_dirs.first} from the autoproj configuration"
+                    argv << default_cache_dirs.first
                 elsif argv.size > 1
-                    raise ArgumentError, "expected one cache directory as argument"
+                    raise ArgumentError, "expected only one cache directory as argument"
                 end
 
                 return File.expand_path(argv.first, ws.root_dir), options
             end