clean up Makefile

Makefile

@@ -12,20 +12,14 @@ TEST_DIR = tests
 TEST_TARGET = orbit_test
 
 # Source files
-CPP_SOURCES = $(SRC_DIR)/main.cpp \
-               $(SRC_DIR)/physics.cpp \
-               $(SRC_DIR)/simulation.cpp \
-               $(SRC_DIR)/config_loader.cpp \
-               $(SRC_DIR)/renderer.cpp
-
-C_SOURCES = $(SRC_DIR)/../ext/tomlc17/src/tomlc17.c
-
-SOURCES = $(CPP_SOURCES) $(C_SOURCES)
+CPP_SOURCES := $(wildcard $(SRC_DIR)/*.cpp)
+C_SOURCES = ext/tomlc17/src/tomlc17.c
+TEST_SOURCES := $(wildcard $(TEST_DIR)/*.cpp)
 
 # Object files
 CPP_OBJECTS = $(CPP_SOURCES:$(SRC_DIR)/%.cpp=$(BUILD_DIR)/%.o)
-C_OBJECTS = $(C_SOURCES:$(SRC_DIR)/%.c=$(BUILD_DIR)/%.o)
-OBJECTS = $(CPP_OBJECTS) $(C_OBJECTS)
+C_OBJECTS = $(BUILD_DIR)/tomlc17.o
+TEST_OBJECTS := $(patsubst $(TEST_DIR)/%.cpp, $(BUILD_DIR)/%.o, $(TEST_SOURCES))
 
 # Default target
 all: raylib $(BUILD_DIR) $(TARGET)
@@ -42,20 +36,20 @@ $(BUILD_DIR):
 	mkdir -p $(BUILD_DIR)
 
 # Link the executable
-$(TARGET): $(OBJECTS) raylib
-	$(CXX) $(OBJECTS) -o $(TARGET) $(LDFLAGS)
+$(TARGET): $(C_OBJECTS) $(CPP_OBJECTS) raylib
+	$(CXX) $(C_OBJECTS) $(CPP_OBJECTS) -o $(TARGET) $(LDFLAGS)
 
 # Compile C++ source files
-$(BUILD_DIR)/%.o: $(SRC_DIR)/%.cpp
+$(CPP_OBJECTS): $(BUILD_DIR)/%.o : $(SRC_DIR)/%.cpp
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 
 # Compile C source files
-$(BUILD_DIR)/%.o: $(SRC_DIR)/%.c
+$(C_OBJECTS): $(BUILD_DIR)/%.o : $(C_SOURCES)
 	$(CC) -Wall -Wextra -g -ggdb3 -std=c99 -I./src -I./ext/tomlc17/src -c $< -o $@
 
 # Clean build files
 clean:
-	rm -rf $(BUILD_DIR) $(TARGET)
+	rm -rf $(BUILD_DIR) $(TARGET) $(TEST_TARGET)
 
 # Clean everything including raylib
 clean-all: clean
@@ -68,32 +62,16 @@ rebuild: clean all
 run: $(TARGET)
 	./$(TARGET)
 
+$(TEST_OBJECTS): $(BUILD_DIR)/%.o : $(TEST_DIR)/%.cpp
+	$(CXX) $(CXXFLAGS) -c $< -o $@
 
 # Build automated test suite
-test-build:
-	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
-		-c $(TEST_DIR)/test_main.cpp -o build/test_main.o
-	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
-		-c $(TEST_DIR)/test_integration.cpp -o build/test_integration.o
-	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
-		-c $(TEST_DIR)/test_energy.cpp -o build/test_energy.o
-	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
-		-c $(TEST_DIR)/test_orbital_period.cpp -o build/test_orbital_period.o
-	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
-		-c $(TEST_DIR)/test_comet_orbit.cpp -o build/test_comet_orbit.o
-	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
-		-c $(TEST_DIR)/test_moon_orbits.cpp -o build/test_moon_orbits.o
-	$(CXX) $(CXXFLAGS) \
-		-c $(SRC_DIR)/test_utilities.cpp -o build/test_utilities.o
-	$(CXX) $(CXXFLAGS) \
-		-c $(SRC_DIR)/physics.cpp -o build/test_physics.o
-	$(CXX) $(CXXFLAGS) \
-		-c $(SRC_DIR)/simulation.cpp -o build/test_simulation.o
-	$(CXX) $(CXXFLAGS) \
-		-c $(SRC_DIR)/config_loader.cpp -o build/test_config_loader.o
-	$(CC) -Wall -Wextra -g -ggdb3 -std=c99 -I./src -I./ext/tomlc17/src \
-		-c $(SRC_DIR)/../ext/tomlc17/src/tomlc17.c -o build/test_tomlc17.o
-	$(CXX) build/test_main.o build/test_integration.o build/test_energy.o build/test_orbital_period.o build/test_comet_orbit.o build/test_moon_orbits.o build/test_utilities.o build/test_physics.o build/test_simulation.o build/test_config_loader.o build/test_tomlc17.o \
+test-build: $(BUILD_DIR) $(C_OBJECTS) $(CPP_OBJECTS) $(TEST_OBJECTS)
+	$(CXX) $(C_OBJECTS) $(TEST_OBJECTS) \
+		build/test_utilities.o \
+		build/physics.o \
+		build/simulation.o \
+		build/config_loader.o \
 		-o $(TEST_TARGET) -lCatch2Main -lCatch2 -lm
 
 # Run automated test suite