-# Hacky makefile to compile everything and run the tests in some kind of sane order.
-# V=--verbose for verbose tests.
-
-# This can be overridden on cmdline to generate pages elsewhere.
-WEBDIR=~/www/html/ccan/
-
-ALL=$(patsubst ccan/%/test, %, $(wildcard ccan/*/test))
-ALL_DIRS=$(patsubst %, ccan/%, $(ALL))
-ALL_DEPENDS=$(patsubst %, ccan/%/.depends, $(ALL))
-ALL_PAGES=$(patsubst ccan/%, $(WEBDIR)/info/%.html, $(ALL_DIRS))
-DIRECT_TARBALLS=$(patsubst ccan/%, $(WEBDIR)/tarballs/%.tar.bz2, $(ALL_DIRS))
-DEPEND_TARBALLS=$(patsubst ccan/%, $(WEBDIR)/tarballs/with-deps/%.tar.bz2, $(ALL_DIRS))
-WEB_SUBDIRS=$(WEBDIR)/tarballs $(WEBDIR)/junkcode $(WEBDIR)/tarballs/with-deps $(WEBDIR)/info
-JUNKDIRS=$(wildcard junkcode/*)
-JUNKPAGES=$(JUNKDIRS:%=$(WEBDIR)/%.html)
-JUNKBALLS=$(JUNKDIRS:%=$(WEBDIR)/%.tar.bz2)
+# Hacky makefile to compile everything and run the tests in some kind
+# of sane order.
+
+# Main targets:
+#
+# check: run tests on all ccan modules (use 'make check V=--verbose' for more)
+# Includes building libccan.a.
+# libccan.a: A library with all the ccan modules in it.
+# tools: build useful tools in tools/ dir.
+# Especially tools/ccanlint/ccanlint and tools/namespacize.
+# distclean: destroy everything back to pristine state
+
+# Trying to build the whole repo is usually a lose; there will be some
+# dependencies you don't have.
+EXCLUDE=wwviaudio ogg_to_pcm jmap jbitset nfs
+
+# Where make scores puts the results
+SCOREDIR=scores/$(shell whoami)/$(shell uname -s)-$(shell uname -m)-$(CC)
+
+ALL=$(filter-out $(EXCLUDE), $(REALLY_ALL))
+
+ALL_DEPENDS=$(patsubst %, ccan/%/.depends, $(REALLY_ALL))
+
+# Not all modules have tests.
+ALL_TESTS=$(patsubst ccan/%/test/, %, $(foreach dir, $(ALL), $(wildcard ccan/$(dir)/test/)))
+
+# Here's my rough logarithmic timeout graph for my laptop:
+#
+# 302 -
+# | / --*
+# | /
+# | /
+# | /
+# |Execution Time, seconds /
+# | /
+# | ---//
+# | /
+# | //
+# | ---\ ---
+# | --- \\ ------
+# |----------------- \---
+# 19 +------------------------------------------------------+--
+# 0 Timeout (ms, logarithmic) 262144
+#
+# 140
+# |
+# |------------
+# | ---
+# | ---------
+# | -------
+# | --\
+# | \\-
+# | Tests skipped --\
+# | \
+# | \\
+# | \\\
+# | \
+# | \----
+# --+0---------------------------------------------------==+--
+# 0 Timeout (ms, logarithmic) 262144
+#
+# On my laptop, this runs 574 tests in 40 seconds, vs. a full check which
+# runs 676 tests in 260 seconds.
+FASTTIMEOUT=750
+
+default: libccan.a