-runtc_CPPFLAGS = $(CPPFLAGS_PYTHON) $(LIBSIGROK_CFLAGS)
-runtc_LDFLAGS = $(LIBSIGROK_LIBS) -L$(top_builddir) -lsigrokdecode
+runtc_CPPFLAGS = $(CPPFLAGS_PYTHON) $(LIBSIGROK_CFLAGS) \
+ -DDECODERS_DIR='"$(abs_top_builddir)/decoders"'
+runtc_LDFLAGS = -L$(top_builddir) $(LIBSIGROK_LIBS) $(LDFLAGS_PYTHON) -lsigrokdecode