| 1 | # Sample Makefile to build simple project. |
| 2 | # |
| 3 | # This Makefile expect all source files (.c) to be at the same level, in the |
| 4 | # current working directory. |
| 5 | # |
| 6 | # It will automatically generate dependencies, compile all files, and produce a |
| 7 | # binary using the provided name. |
| 8 | # |
| 9 | # Set BINARY_NAME to the name of the binary file to build. |
| 10 | # Set BUILD_TYPE to either debug or release |
| 11 | # |
| 12 | # Automatic dependencies code from: |
| 13 | # http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/#tldr |
| 14 | BINARY_NAME=exam1 |
| 15 | BUILD_TYPE=debug |
| 16 | |
| 17 | # ==================================== |
| 18 | # DO NOT CHANGE STUFF BEYOND THIS LINE |
| 19 | # ==================================== |
| 20 | |
| 21 | all: $(BINARY_NAME) |
| 22 | |
| 23 | CC=gcc |
| 24 | LD=gcc |
| 25 | |
| 26 | WARN_FLAGS = -Wall -Wextra |
| 27 | STD_FLAG = -std=c11 |
| 28 | |
| 29 | ifeq ($(BUILD_TYPE),debug) |
| 30 | BUILDDIR := .build/debug |
| 31 | DEBUG_FLAG = -g |
| 32 | STRIP_FLAG = |
| 33 | OPTI_FLAG = -O0 |
| 34 | else |
| 35 | BUILDDIR := .build/release |
| 36 | DEBUG_FLAG = |
| 37 | STRIP_FLAG = -s |
| 38 | OPTI_FLAG = -O3 |
| 39 | endif |
| 40 | |
| 41 | CFLAGS := $(CFLAGS) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) |
| 42 | LDFLAGS := $(LDFLAGS) $(STRIP_FLAG) |
| 43 | |
| 44 | OBJDIR := $(BUILDDIR)/objs |
| 45 | $(shell mkdir -p $(OBJDIR)) |
| 46 | |
| 47 | SRCS=$(wildcard *.c) |
| 48 | OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(SRCS)) |
| 49 | |
| 50 | DEPDIR := $(BUILDDIR)/deps |
| 51 | $(shell mkdir -p $(DEPDIR)) |
| 52 | DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$*.Td |
| 53 | POSTCOMPILE = mv -f $(DEPDIR)/$*.Td $(DEPDIR)/$*.d |
| 54 | |
| 55 | $(BINARY_NAME): $(OBJS) |
| 56 | @echo "[LD ] $@" |
| 57 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ |
| 58 | |
| 59 | $(OBJDIR)/%.o: %.c $(DEPDIR)/%.d |
| 60 | @echo "[C ] $*" |
| 61 | @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@ |
| 62 | @$(POSTCOMPILE) |
| 63 | |
| 64 | $(DEPDIR)/%.d: ; |
| 65 | |
| 66 | .PRECIOUS: $(DEPDIR)/%.d |
| 67 | |
| 68 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS)))) |
| 69 | |
| 70 | clean: |
| 71 | @echo "[CLN]" |
| 72 | -@rm -r $(BUILDDIR) |
| 73 | -@rm $(BINARY_NAME) |
| 74 | |
| 75 | disassemble: $(BINARY_NAME) |
| 76 | objdump -d $< | less |
| 77 | |
| 78 | symbols: $(BINARY_NAME) |
| 79 | objdump -t $< | sort | less |