2 files changed, 9 insertions, 1 deletions
diff --git a/.gitignore b/.gitignore
index 7a60b0c..3356bfa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
 *.o
 *.d
+*.gcda
+*.gcno
 /bfs
 /tests/mksock
 /tests/trie
diff --git a/Makefile b/Makefile
index 4e67cf6..70a78ef 100644
--- a/Makefile
+++ b/Makefile
@@ -86,6 +86,10 @@ ifdef SANITIZE
 LOCAL_CFLAGS += -fno-sanitize-recover=all
 endif
 
+ifneq ($(filter gcov,$(MAKECMDGOALS)),)
+LOCAL_CFLAGS += --coverage
+endif
+
 ifneq ($(filter release,$(MAKECMDGOALS)),)
 CFLAGS := -g $(WFLAGS) -O3 -flto -DNDEBUG
 endif
@@ -130,6 +134,8 @@ ubsan: bfs
 	@:
 msan: bfs
 	@:
+gcov: bfs
+	@:
 release: bfs
 	@:
 
@@ -166,7 +172,7 @@ endif
 	+$(MAKE) -B check $(DISTCHECK_FLAGS)
 
 clean:
-	$(RM) bfs *.[od] tests/mksock tests/trie tests/xtimegm tests/*.[od]
+	$(RM) bfs *.[od] *.gcda *.gcno tests/mksock tests/trie tests/xtimegm tests/*.[od] tests/*.gcda tests/*.gcno
 
 install:
 	$(MKDIR) $(DESTDIR)$(PREFIX)/bin