1 files changed, 10 insertions, 3 deletions
diff --git a/erlang.mk b/erlang.mk
index 0dadfbb..1e0a05e 100644
--- a/erlang.mk
+++ b/erlang.mk
@@ -90,7 +90,13 @@ ALL_TEST_DEPS_DIRS = $(addprefix $(DEPS_DIR)/,$(TEST_DEPS))
 
 # Application.
 
-ERL_LIBS ?= $(DEPS_DIR)
+ifeq ($(filter $(DEPS_DIR),$(subst :, ,$(ERL_LIBS))),)
+ifeq ($(ERL_LIBS),)
+	ERL_LIBS = $(DEPS_DIR)
+else
+	ERL_LIBS := $(ERL_LIBS):$(DEPS_DIR)
+endif
+endif
 export ERL_LIBS
 
 ERLC_OPTS ?= -Werror +debug_info +warn_export_all +warn_export_vars \
@@ -210,13 +216,14 @@ build-tests: build-test-deps
 	$(gen_verbose) erlc -v $(ERLC_OPTS) -o test/ \
 		$(wildcard test/*.erl test/*/*.erl) -pa ebin/
 
+CT_OPTS ?=
 CT_RUN = ct_run \
 	-no_auto_compile \
 	-noshell \
 	-pa $(realpath ebin) $(DEPS_DIR)/*/ebin \
 	-dir test \
-	-logdir logs
-#	-cover test/cover.spec
+	-logdir logs \
+	$(CT_OPTS)
 
 CT_SUITES ?=