diff --git a/include/props.mak b/include/props.mak
new file mode 100644
index 0000000..56245fe
--- /dev/null
+++ b/include/props.mak
@@ -0,0 +1,11 @@
+CPPFLAGS := $(CPPFLAGS) -MMD -MP
+ifeq ($(CFG),Debug)
+CPPFLAGS := $(CPPFLAGS) -D_DEBUG
+CXXFLAGS := -Og
+else
+CPPFLAGS := $(CPPFLAGS) -DNDEBUG
+CXXFLAGS := -O3
+endif
+
+OBJS := $(SRCS:%=%.o)
+DEPS := $(OBJS:.o=.d)
diff --git a/include/targets.mak b/include/targets.mak
new file mode 100644
index 0000000..aeba1bb
--- /dev/null
+++ b/include/targets.mak
@@ -0,0 +1,5 @@
+%.h.gch: %.h
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -x c++-header -o $@ -c $<
+
+%.cpp.o: %.cpp
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -o $@ -c $<
diff --git a/lib/libZRCola/build/Makefile b/lib/libZRCola/build/Makefile
index 9313797..e3f9dc3 100644
--- a/lib/libZRCola/build/Makefile
+++ b/lib/libZRCola/build/Makefile
@@ -1,12 +1,4 @@
-CPPFLAGS := $(CPPFLAGS) -MMD -MP -I../../stdex/include
-ifeq ($(CFG),Debug)
-CPPFLAGS := $(CPPFLAGS) -D_DEBUG
-CXXFLAGS := -Og
-else
-CPPFLAGS := $(CPPFLAGS) -DNDEBUG
-CXXFLAGS := -O3
-endif
-
+CPPFLAGS := -I../../stdex/include
 SRCS := \
 	../src/character.cpp \
 	../src/common.cpp \
@@ -16,20 +8,15 @@ SRCS := \
 	../src/pch.cpp \
 	../src/tag.cpp \
 	../src/translate.cpp
-OBJS := $(SRCS:%=%.o)
-DEPS := $(OBJS:.o=.d)
+
+include ../../../include/props.mak
 
 ../lib/libZRCola.a : ../src/pch.h.gch $(OBJS)
 	$(AR) $(ARFLAGS) $@ $(OBJS)
 
-%.h.gch: %.h
-	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -x c++-header -o $@ -c $<
-
-%.cpp.o: %.cpp
-	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -o $@ -c $<
-
 .PHONY: clean
 clean:
 	-rm -r ../src/*.h.gch ../src/*.cpp.o ../lib/libZRCola.a
 
+include ../../../include/targets.mak
 -include $(DEPS)