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Support multiple build types with GNU make
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| # | |
| # Compiler flags | |
| # | |
| CC = gcc | |
| CFLAGS = -Wall -Werror -Wextra | |
| # | |
| # Project files | |
| # | |
| SOURCES = file1.c file2.c file3.c file4.c | |
| OBJECTS = $(SOURCES:.c=.o) | |
| EXECUTABLE = exefile | |
| BUILD_DIR = build | |
| # | |
| # Debug build settings | |
| # | |
| DEBUG_DIR = $(BUILD_DIR)/debug | |
| DEBUG_EXECUTABLE = $(DEBUG_DIR)/$(EXECUTABLE) | |
| DEBUG_OBJECTS = $(addprefix $(DEBUG_DIR)/, $(OBJECTS)) | |
| DEBUG_FLAGS = -g -O0 -DDEBUG | |
| # | |
| # Release build settings | |
| # | |
| RELEASE_DIR = $(BUILD_DIR)/release | |
| RELEASE_EXECUTABLE = $(RELEASE_DIR)/$(EXECUTABLE) | |
| RELEASE_OBJECTS = $(addprefix $(RELEASE_DIR)/, $(OBJECTS)) | |
| RELEASE_FLAGS = -O3 -DNDEBUG | |
| .PHONY: all clean debug prep release remake | |
| # Default build | |
| all: release | |
| # | |
| # Debug rules | |
| # | |
| debug: prep $(DEBUG_EXECUTABLE) | |
| $(DEBUG_EXECUTABLE): $(DEBUG_OBJECTS) | |
| $(CC) $(CFLAGS) $(DEBUG_FLAGS) -o $(DEBUG_EXECUTABLE) $^ | |
| $(DEBUG_DIR)/%.o: %.c | |
| $(CC) -c $(CFLAGS) $(DEBUG_FLAGS) -o $@ $< | |
| # | |
| # Release rules | |
| # | |
| release: prep $(RELEASE_EXECUTABLE) | |
| $(RELEASE_EXECUTABLE): $(RELEASE_OBJECTS) | |
| $(CC) $(CFLAGS) $(RELEASE_FLAGS) -o $(RELEASE_EXECUTABLE) $^ | |
| $(RELEASE_DIR)/%.o: %.c | |
| $(CC) -c $(CFLAGS) $(RELEASE_FLAGS) -o $@ $< | |
| # | |
| # Other rules | |
| # | |
| prep: | |
| @mkdir -p $(DEBUG_DIR) $(RELEASE_DIR) | |
| remake: clean all | |
| clean: | |
| rm -f $(RELEASE_EXECUTABLE) $(RELEASE_OBJECTS) $(DEBUG_EXECUTABLE) $(DEBUG_OBJECTS) |
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