-# test the Configuration class
-PROGRAM = Configuration${BASENAME}
-SLIBS = -lapt-pkg
-SOURCE = configuration_test.cc
-include $(PROGRAM_H)
+# Usually you shouldn't tweak such internal variables, indicated by a
+# trailing _.
+GTEST_SRCS_ = $(GTEST_DIR)/src/*.cc $(GTEST_DIR)/src/*.h $(GTEST_HEADERS)
+
+# Builds gtest.a
+# For simplicity and to avoid depending on Google Test's
+# implementation details, the dependencies specified below are
+# conservative and not optimized. This is fine as Google Test
+# compiles fast and for ordinary users its source rarely changes.
+$(gtest-OBJS): $(GTEST_SRCS_)
+ echo Compiling $@
+ $(CXX) $(CPPFLAGS) -I$(GTEST_DIR) $(CXXFLAGS) -c -o $@ $(GTEST_DIR)/src/$(notdir $(basename $@)).cc
+
+$(LIB)/gtest.a: $(OBJ)/gtest-all.o
+ echo Building static library $@
+ -rm -f $@
+ $(AR) $(ARFLAGS) $@ $^
+
+else
+test:
+ @echo "APT uses Googles C++ testing framework for its unit tests"
+ @echo "On Debian systems this is available in the 'libgtest-dev' package."
+ @echo "Please install it before attempting to run the unit tests."
+ $(CC) -I $(BASE)/build/include -M gtest_runner.cc
+ exit 100
+endif