From a8f3a4bc590002659ffb0cc3e9565bbf771adbc4 Mon Sep 17 00:00:00 2001
From: Donald Buczek <buczek@molgen.mpg.de>
Date: Sun, 8 Oct 2017 17:07:57 +0200
Subject: [PATCH] Makefile: Correct recursive usage

Using $(MAKE) instead of "make", is special for gnu make. It
correctly processes Makeflags and parallel execution.
---
 Makefile | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index b3d5b41..d248b9d 100644
--- a/Makefile
+++ b/Makefile
@@ -14,14 +14,14 @@ all: bsmap
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 bsmap: $(OBJS1)
-	(cd samtools; make)
-	(cd gzstream; make)
+	$(MAKE) -C samtools
+	$(MAKE) -C gzstream
 	$(CXX) $(CXXFLAGS) $^ -o $@ $(THREAD) -lbam -lz -lgzstream
 
 clean:
 	rm -f *.o *~ bsmap
-	(cd samtools; make clean)
-	(cd gzstream; make clean)
+	$(MAKE) -C samtools clean
+	$(MAKE) -C gzstream clean
 install:
 	install -d $(BIN)
 	install ./bsmap $(BIN)