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eddc018d JB |
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=exo1 | |
15 | BINARY_PATH:=src | |
16 | LIBRARY_NAME=libexo1 | |
17 | LIBRARY_PATH:=lib | |
18 | #LDLIBS=-L$(LIBRARY_PATH) -l$(BINARY_NAME) | |
19 | BUILD_TYPE=debug | |
20 | ||
21 | # ==================================== | |
22 | # DO NOT CHANGE STUFF BEYOND THIS LINE | |
23 | # ==================================== | |
24 | ||
25 | all: $(BINARY_NAME) $(BINARY_NAME).dynamic $(BINARY_NAME).static | |
26 | ||
27 | CC=gcc | |
28 | LD=gcc | |
29 | AR=ar | |
30 | ||
31 | WARN_FLAGS = -Wall -Wextra | |
32 | STD_FLAG = -std=c11 | |
33 | ||
34 | ifeq ($(BUILD_TYPE),debug) | |
35 | BUILDDIR := .build/debug | |
36 | DEBUG_FLAG = -g | |
37 | STRIP_FLAG = | |
38 | OPTI_FLAG = -O0 | |
39 | else | |
40 | BUILDDIR := .build/release | |
41 | DEBUG_FLAG = | |
42 | STRIP_FLAG = -s | |
43 | OPTI_FLAG = -O3 | |
44 | endif | |
45 | ||
46 | #FIXME: Add a way to better control the library build flag | |
47 | CFLAGS := -fPIC $(CFLAGS) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) | |
48 | LDFLAGS := $(LDFLAGS) $(STRIP_FLAG) | |
49 | LIBLDFLAGS := -shared $(LDFLAGS) | |
50 | STATICLIBLDFLAGS := -static $(LDFLAGS) | |
51 | ||
52 | OBJDIR := $(BUILDDIR)/objs | |
53 | $(shell mkdir -p $(OBJDIR)) | |
54 | ||
55 | SRCS=$(wildcard $(BINARY_PATH)/*.c) | |
56 | LIBSRCS=$(wildcard $(LIBRARY_PATH)/*.c) | |
57 | OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(SRCS))) | |
58 | LIBOBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(LIBSRCS))) | |
59 | ||
60 | DEPDIR := $(BUILDDIR)/deps | |
61 | $(shell mkdir -p $(DEPDIR)) | |
62 | DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$(notdir $*).Td | |
63 | POSTCOMPILE = mv -f $(DEPDIR)/$(notdir $*).Td $(DEPDIR)/$(notdir $*).d | |
64 | ||
65 | print: | |
66 | @echo $(basename $(notdir $(SRCS))) | |
67 | @echo $(notdir $(SRCS)) | |
68 | @echo $(DEPDIR)/%d | |
69 | @echo $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS)))) | |
70 | @echo $(OBJS) $(LIBOBJS) | |
71 | @echo $(SRCS) $(LIBSRCS) | |
72 | @echo $(POSTCOMPILE) | |
73 | ||
74 | $(LIBRARY_PATH)/$(LIBRARY_NAME).a: $(LIBOBJS) | |
75 | @echo "[AR StO] $@" | |
76 | @$(AR) rcs $@ $^ | |
77 | ||
78 | $(LIBRARY_PATH)/$(LIBRARY_NAME).so: $(LIBOBJS) | |
79 | @echo "[LD ShO] $@" | |
80 | @$(LD) $(CFLAGS) $(LIBLDFLAGS) $^ $(LDLIBS) -o $@ | |
81 | ||
82 | #$(BINARY_NAME): $(OBJS) $(LIBOBJS) | |
83 | # @echo "[LD ] $@" | |
84 | # $(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ | |
85 | ||
86 | $(BINARY_NAME): $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
87 | @echo "[LD ] $@" | |
88 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LOCALLDLIBS) $(LDLIBS) -o $@ | |
89 | ||
90 | LOCALLDLIBS=-L$(LIBRARY_PATH) -l$(BINARY_NAME) | |
91 | $(BINARY_NAME).static: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
92 | @echo "[LD ] $@" | |
93 | @$(LD) $(CFLAGS) $(STATICLIBLDFLAGS) $^ $(LOCALLDLIBS) $(LDLIBS) -o $@ | |
94 | ||
95 | #$(BINARY_NAME).staticlocal: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
96 | # @echo "[LD ] $@" | |
97 | # @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LOCALLDLIBS) $(LDLIBS) -o $@ | |
98 | ||
99 | $(BINARY_NAME).dynamic: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).so | |
100 | @echo "[LD ] $@" | |
101 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LOCALLDLIBS) $(LDLIBS) -o $@ | |
102 | ||
103 | $(OBJS): $(SRCS) $(DEPDIR)/%.d | |
104 | @echo "[C ] $*" | |
105 | @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@ | |
106 | @$(POSTCOMPILE) | |
107 | ||
108 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS)))) | |
109 | ||
110 | $(LIBOBJS): $(LIBSRCS) $(DEPDIR)/%.d | |
111 | @echo "[C ] $*" | |
112 | @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@ | |
113 | @$(POSTCOMPILE) | |
114 | ||
115 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(LIBSRCS)))) | |
116 | ||
117 | $(DEPDIR)/%.d: ; | |
118 | ||
119 | .PRECIOUS: $(DEPDIR)/%.d | |
120 | ||
121 | clean: | |
122 | @echo "[CLN]" | |
123 | -@rm -r $(BUILDDIR) | |
124 | -@rm $(BINARY_NAME) | |
125 | -@rm $(BINARY_NAME).static | |
126 | -@rm $(BINARY_NAME).dynamic | |
127 | -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
128 | -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).so | |
129 | ||
130 | disassemble: $(BINARY_NAME) | |
131 | objdump -d $< | less | |
132 | ||
133 | symbols: $(BINARY_NAME) | |
134 | objdump -t $< | sort | less |