diff --git a/Doc/Makefile b/Doc/Makefile
--- a/Doc/Makefile
+++ b/Doc/Makefile
@@ -63,6 +63,12 @@
 	$(PYTHON) tools/sphinx-build.py $(ALLSPHINXOPTS)
 	@echo
 
+# like build, but continue on error
+build-and-continue: checkout
+	mkdir -p build/$(BUILDER) build/doctrees
+	-$(PYTHON) tools/sphinx-build.py $(ALLSPHINXOPTS)
+	@echo
+
 html: BUILDER = html
 html: build
 	@echo "Build finished. The HTML pages are in build/html."
@@ -91,12 +97,12 @@
 	@echo "The overview file is in build/changes."
 
 linkcheck: BUILDER = linkcheck
-linkcheck: build
+linkcheck: build-and-continue
 	@echo "Link check complete; look for any errors in the above output" \
 	      "or in build/$(BUILDER)/output.txt"
 
 suspicious: BUILDER = suspicious
-suspicious: build
+suspicious: build-and-continue
 	@echo "Suspicious check complete; look for any errors in the above output" \
 	      "or in build/$(BUILDER)/suspicious.csv.  If all issues are false" \
 	      "positives, append that file to tools/sphinxext/susp-ignored.csv."
@@ -106,7 +112,7 @@
 	@echo "Coverage finished; see c.txt and python.txt in build/coverage"
 
 doctest: BUILDER = doctest
-doctest: build
+doctest: build-and-continue
 	@echo "Testing of doctests in the sources finished, look at the" \
 	      "results in build/doctest/output.txt"