X-Git-Url: http://deadsoftware.ru/gitweb?a=blobdiff_plain;f=Makefile;h=90f9d3d94966421d0f16474a58357adfad2c0f6c;hb=8bb15b1dd0927add217ff8ff4ef4e002dc49bff3;hp=4ad7260b49abef09e303cfabd32437671153d4ff;hpb=d7f2452e20b04d1559b7bdd3aa49b6fbf7d0abaf;p=odcread.git

diff --git a/Makefile b/Makefile
index 4ad7260..90f9d3d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,34 @@
-HEADERS=oberon.h store.h reader.h domain.h alien.h typeregister.h textmodel.h fold.h visitor.h
+MODULES := reader store alien typeregister textmodel fold
 
-odcread: odcread.o reader.o store.o util.o alien.o typeregister.o textmodel.o fold.o 
+# Add module directories to the include path
+CFLAGS += -I.
+
+# Variables for the modules to write to
+SRCS := odcread.cc
+
+# Include module definitions
+include $(patsubst %,%/Make.inc,$(MODULES))
+
+# This rule just links the object files together
+odcread: $(SRCS:.cc=.o)
 	g++ -o $@ $^
 
-%.o: %.cc $(HEADERS)
-	g++ -c -I. -o $@ $<
+# This rule build an object (.o) from a source (.cc). It first builds a
+# dependency (.d) file which will ensure that the .o is rebuilt whenever the
+# header files included by the .cc are updated.
+# The options given to GCC for this are as follows:
+#  -MM : calculate dependencies, but exclude system headers
+#  -MF : output dependencies to the given file
+#  -MP : generate "header.h:" rules to avoid errors on deletion of headers
+#  -MT : the main rule has the given target (to handle subdirs correctly)
+# The .d file is not an explicit target because it will need to be (re-)built
+# if and only if the .o needs to be rebuilt.
+%.o: %.cc
+	g++ $(CFLAGS) $< -MM -MF $*.d -MP -MT $@
+	g++ $(CFLAGS) $< -c -o $@
+
+clean:
+	rm -f odcread *.d *.o */*.o */*.d
+
+# Include the generated dependency files (if they exist)
+-include $(SRCS:.cc=.d)