Wildcard expansion time in make is complicated.

My Makefile-foo isn't developed enough to figure out how to get TESTS
expanded after the initial vtc file generation has happened.

For now hack around it by splitting into two targets, and run the
generating one manually first.

.travis.yml

@@ -9,4 +9,5 @@ before_install:
   - sudo apt-get install varnish
 
 script:
+  - make initial
   - make check

Makefile

@@ -3,16 +3,16 @@ VARNISHD := $(shell which varnishd)
 VARNISHTEST := $(shell which varnishtest)
 TESTS=tests/*.vtc
 
-check: $(TESTS)
-
-.PHONY: check controlset snippets $(TESTS)
+.PHONY: check initial
+all: initial check
 
-controlset: controlset.txt tests/vtc-from-controlset.py
+initial: controlset.txt tests/vtc-from-controlset.py INSTALL.rst tests/vtc-from-snippets.py
 	tests/vtc-from-controlset.py controlset.txt > tests/99-controlset.vtc
-
-snippets: INSTALL.rst tests/vtc-from-snippets.py
 	find tests/ -name snippet-\*vtc -exec rm "{}" \;
 	cd tests && ./vtc-from-snippets.py ../INSTALL.rst
 
-$(TESTS): controlset snippets
+check: $(TESTS)
+
+$(TESTS): devicedetect.vcl initial
 	${VARNISHTEST} -Dvarnishd=${VARNISHD} -Dprojectdir=$(PWD) $@
+