-tests_main_CPPFLAGS = -D_POSIX_C_SOURCE=200112L -DDECODERS_DIR='"$(abs_top_srcdir)/decoders"'
-tests_main_LDADD = libsigrokdecode.la $(SRD_EXTRA_LIBS) $(CHECK_LIBS)
+tests_main_CPPFLAGS = -DDECODERS_TESTDIR='"$(abs_top_srcdir)/decoders"'
+tests_main_LDADD = libsigrokdecode.la $(SRD_EXTRA_LIBS) $(TESTS_LIBS)