Merge pull request #13 from kba/cleanup-cmd

- `ocrd-make -c|-cleanup|-cleanup|cleanup` to remove all makefiles linked/copied to CWD (target directory) last time (but no self-made ones)
- in `ocrd-make` when symlinking/copying makefiles to CWD (target directory), replace `cp -u` (to avoid its redundant error message and retval) with an explicit shell loop checking file existence and time stamps

Makefile

@@ -52,7 +52,7 @@ CONFIGNAME := $(basename $(notdir $(CONFIGURATION)))
 
 WORKSPACES := $(patsubst %/mets.xml,%,$(wildcard */data/mets.xml */mets.xml))
 
-ifeq ($(filter help info repair deps-ubuntu install uninstall %.mk,$(MAKECMDGOALS)),)
+ifeq ($(filter help cleanup info repair deps-ubuntu install uninstall %.mk,$(MAKECMDGOALS)),)
 ifeq ($(notdir $(MAKEFILE_LIST)),Makefile)
 $(error Did you forget to select a workflow configuration makefile?)
 else
@@ -71,6 +71,7 @@ help:
 	@echo
 	@echo "  Targets (general):"
 	@echo "  * help (this message)"
+	@echo "  * cleanup (remove symlinked/copied Makefiles)"
 	@echo "  * deps-ubuntu (install extra system packages needed here, beyond ocrd and processors)"
 	@echo "  * install (copy 'ocrd-make' script and configuration makefiles to"
 	@echo "  *          VIRTUAL_ENV=$(VIRTUAL_ENV))"
@@ -111,6 +112,9 @@ uninstall:
 	$(RM) $(BINDIR)/ocrd-make
 	$(RM) -r $(SHAREDIR)
 
+cleanup:
+	find $(SHAREDIR) \( -name 'Makefile' -or -name '*.mk' \) -exec basename {} \; |xargs rm -v
+
 .PHONY: deps-ubuntu install uninstall
 
 # spawn a new configuration

ocrd-make

@@ -21,13 +21,22 @@ function process {
         # we want to have a fall-back for FS without symlink support
         # or when some makefile already exists (perhaps with customization)
         # but unfortunately, `cp -u` has strange semantics w.r.t. retvalue
-        ln -t "$CURDIR" -s "$SHAREDIR"/{*.mk,Makefile} 2>/dev/null || cp -fu "$SHAREDIR"/{*.mk,Makefile} "$CURDIR"
+        for f in *.mk Makefile;do
+            local src="$SHAREDIR/$f"
+            local dst="$CURDIR/$f"
+            if [[ ! -e "$dst" || "$src" -nt "$dst" ]];then
+                ln -s "$src" "$dst" 2>/dev/null || cp -f "$src" "$dst"
+            fi
+        done
         make -C "$CURDIR" "$@"
     )
 }
 
-
 case ${1:--h} in
+    -c|-[-]cleanup|cleanup)
+        process --no-print-directory cleanup
+        exit
+        ;;
     -h|-[-]help|help)
         cat <<EOF
   (This will merely delegate to \`make\` on the current working directory "$PWD"