diff --git a/perf/Makefile.am b/perf/Makefile.am
index 2fd427c72..149b714ea 100644
--- a/perf/Makefile.am
+++ b/perf/Makefile.am
@@ -144,9 +144,14 @@ perf: cairo-perf$(EXEEXT) cairo-perf-trace$(EXEEXT)
html-local: index.html
-index.html: cairo-perf$(EXEEXT)
+perf-tag.html : cairo-perf${EXEEXT}
+ $(CAIRO_PERF_ENVIRONMENT) ./cairo-perf-diff -t -h `git describe --abbrev=0` HEAD > $@
+perf-commit.html : cairo-perf${EXEEXT}
$(CAIRO_PERF_ENVIRONMENT) ./cairo-perf-diff -t -h HEAD > $@
+# Summarise changes in index.html, with details in links
+index.html: perf-tag.html perf-commit.html
+ echo "Performance ChangesAgainst "`git describe --abbrev=0`"
Latest commit" > $@
EXTRA_VALGRIND_FLAGS = $(CAIRO_EXTRA_VALGRIND_FLAGS)
VALGRIND_MEMCHECK_FLAGS = \