From 4ffbdcc0f5a1b28092f4f45bef6ae0bbcdcefe42 Mon Sep 17 00:00:00 2001
From: Gavin Andresen <gavinandresen@gmail.com>
Date: Wed, 5 Oct 2011 11:28:08 -0400
Subject: [PATCH] Auto-build dependencies

---
 src/makefile.unix | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/src/makefile.unix b/src/makefile.unix
index f9f03b3aa8d..1ef7caaad72 100644
--- a/src/makefile.unix
+++ b/src/makefile.unix
@@ -101,15 +101,26 @@ OBJS= \
 
 all: bitcoind
 
+# auto-generated dependencies:
+-include obj/nogui/*.P
+-include obj/test/*.P
 
-obj/nogui/%.o: %.cpp $(HEADERS)
-	$(CXX) -c $(CXXFLAGS) -o $@ $<
+obj/nogui/%.o: %.cpp
+	$(CXX) -c $(CXXFLAGS) -MMD -o $@ $<
+	@cp $(@:%.o=%.d) $(@:%.o=%.P); \
+	  sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
+	      -e '/^$$/ d' -e 's/$$/ :/' < $(@:%.o=%.d) >> $(@:%.o=%.P); \
+	  rm -f $(@:%.o=%.d)
 
 bitcoind: $(OBJS:obj/%=obj/nogui/%)
 	$(CXX) $(CXXFLAGS) -o $@ $^ $(LIBS)
 
-obj/test/test_bitcoin.o: $(wildcard test/*.cpp) $(HEADERS)
-	$(CXX) -c $(CFLAGS) -o $@ test/test_bitcoin.cpp
+obj/test/%.o: test/%.cpp
+	$(CXX) -c $(CXXFLAGS) -MMD -o $@ $<
+	@cp $(@:%.o=%.d) $(@:%.o=%.P); \
+	  sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
+	      -e '/^$$/ d' -e 's/$$/ :/' < $(@:%.o=%.d) >> $(@:%.o=%.P); \
+	  rm -f $(@:%.o=%.d)
 
 test_bitcoin: obj/test/test_bitcoin.o $(filter-out obj/nogui/init.o,$(OBJS:obj/%=obj/nogui/%))
 	$(CXX) $(CXXFLAGS) -o $@ $(LIBPATHS) $^ -Wl,-Bstatic -lboost_unit_test_framework $(LIBS)
@@ -119,4 +130,6 @@ clean:
 	-rm -f obj/*.o
 	-rm -f obj/nogui/*.o
 	-rm -f obj/test/*.o
-	-rm -f headers.h.gch
+	-rm -f obj/*.P
+	-rm -f obj/nogui/*.P
+	-rm -f obj/test/*.P