Add --enable-installed-tests, use it for reftests

See https://live.gnome.org/GnomeGoals/InstalledTests

https://bugzilla.gnome.org/show_bug.cgi?id=699601

configure.ac

@@ -255,6 +255,11 @@ AC_ARG_ENABLE(rebuilds,
               [AS_HELP_STRING([--disable-rebuilds],
                               [disable all source autogeneration rules])],,
               [enable_rebuilds=yes])
+AC_ARG_ENABLE(installed_tests,
+              AS_HELP_STRING([--enable-installed-tests],
+                             [Install test programs (default: no)]),,
+              [enable_installed_tests=no])
+AM_CONDITIONAL(BUILDOPT_INSTALL_TESTS, test x$enable_installed_tests = xyes)
 
 AC_ARG_ENABLE(gtk2-dependency,
               [AS_HELP_STRING([--enable-gtk2-dependency],

tests/reftests/Makefile.am

@@ -30,7 +30,7 @@ EXTRA_DIST += \
 	border-image-repeat.sh \
 	$(NULL)
 
-EXTRA_DIST += \
+testdata = \
 	background-area.css \
 	background-area.ref.ui \
 	background-area.ui \
@@ -279,4 +279,25 @@ EXTRA_DIST += \
 	window-default-size.ui \
 	$(NULL)
 
+if BUILDOPT_INSTALL_TESTS
+insttestdir=$(pkglibexecdir)/installed-tests
+insttest_PROGRAMS = gtk-reftest
+
+reftestdir = $(insttestdir)/reftests
+reftest_DATA = $(testdata)
+
+substitutions = \
+	-e s,@pkglibexecdir\@,$(pkglibexecdir),g \
+	$(NULL)
+
+reftests.test: reftests.test.in Makefile
+	$(AM_V_GEN) sed $(substitutions) $< > $@.tmp && mv $@.tmp $@
+
+EXTRA_DIST += \
+	reftests.test.in
+
+testmetadir = $(datadir)/installed-tests/$(PACKAGE)
+testmeta_DATA = reftests.test
+endif
+ 
 -include $(top_srcdir)/git.mk

tests/reftests/reftests.test.in

@@ -0,0 +1,3 @@
+[Test]
+Exec=/bin/sh -c "@pkglibexecdir@/installed-tests/gtk-reftest -k --verbose --output $(pwd) --directory @pkglibexecdir@/installed-tests/reftests"
+Type=session