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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 | # $(SRC_PATH) directory. | |
5 | # | |
6 | # This Makefile expect all embedded library source files (.c) to be at the same level, in the | |
7 | # $(LIBRARY_PATH) directory. | |
8 | # | |
9 | # It will automatically generate dependencies, compile all files, and produce a | |
10 | # binary using the provided name linked against the library if necessary. | |
11 | # | |
12 | # Set BINARY_NAME to the name of the binary file to build. | |
13 | # Set LIBRARY_NAME to the name of the library file to build. | |
14 | # The default path for the library code and object is lib. | |
15 | # By default the linker will look for $(BINARY_NAME) library name. | |
16 | # Set BUILD_TYPE to either debug or release. | |
17 | # | |
18 | # Automatic dependencies code from: | |
19 | # http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/#tldr | |
20 | BINARY_NAME=exo2 | |
21 | SRC_PATH:=src | |
22 | LIBRARY_NAME=libexo2 | |
23 | LIBRARY_PATH:=lib | |
24 | LDLIBS=-lncurses -ltinfo | |
25 | BUILD_TYPE=debug | |
26 | #BUILD_TYPE=release | |
27 | ||
28 | # ==================================== | |
29 | # DO NOT CHANGE STUFF BEYOND THIS LINE | |
30 | # ==================================== | |
31 | ||
32 | all: $(BINARY_NAME) $(BINARY_NAME).dynamic $(BINARY_NAME).static | |
33 | ||
34 | CC=gcc | |
35 | LD=gcc | |
36 | AR=ar | |
37 | ||
38 | WARN_FLAGS = -Wall -Wextra | |
39 | STD_FLAG = -std=c11 | |
40 | ||
41 | ifeq ($(BUILD_TYPE),debug) | |
42 | BUILDDIR := .build/debug | |
43 | DEBUG_FLAG = -g | |
44 | STRIP_FLAG = | |
45 | OPTI_FLAG = -O0 | |
46 | LTO_SUPPORT = yes | |
47 | GOLD_SUPPORT = yes | |
48 | else | |
49 | BUILDDIR := .build/release | |
50 | DEBUG_FLAG = | |
51 | STRIP_FLAG = -s | |
52 | OPTI_FLAG = -O3 | |
53 | LTO_SUPPORT = yes | |
54 | GOLD_SUPPORT = yes | |
55 | endif | |
56 | ||
57 | ifeq ($(LTO_SUPPORT),yes) | |
58 | CFLAGS_LTO = -flto -ffat-lto-objects | |
59 | LDFLAGS_LTO = -fuse-linker-plugin -flto | |
60 | endif | |
61 | ||
62 | ifeq ($(GOLD_SUPPORT),yes) | |
63 | LDFLAGS_GOLD = -fuse-ld=gold | |
64 | endif | |
65 | ||
66 | # Putting header files in the source directory is not the purpose of this INCLUDES variable | |
67 | INCLUDES := $(INCLUDES) -I$(LIBRARY_PATH) | |
68 | CFLAGS := $(CFLAGS) $(CFLAGS_LTO) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) $(INCLUDES) | |
69 | LIBCFLAGS := -fPIC $(CFLAGS) | |
70 | LDFLAGS := $(LDFLAGS) $(LDFLAGS_LTO) $(LDFLAGS_GOLD) $(STRIP_FLAG) | |
71 | LIBLDFLAGS := -shared $(LDFLAGS) | |
72 | STATICLIBLDFLAGS := -static $(LDFLAGS) | |
73 | LDLIBS := $(LDLIBS) -L$(LIBRARY_PATH) -l$(BINARY_NAME) | |
74 | ||
75 | OBJDIR := $(BUILDDIR)/objs | |
76 | $(shell mkdir -p $(OBJDIR)) | |
77 | ||
78 | SRCS=$(wildcard $(SRC_PATH)/*.c) | |
79 | LIBSRCS=$(wildcard $(LIBRARY_PATH)/*.c) | |
80 | OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(SRCS))) | |
81 | LIBOBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(LIBSRCS))) | |
82 | ||
83 | DEPDIR := $(BUILDDIR)/deps | |
84 | $(shell mkdir -p $(DEPDIR)) | |
85 | DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$(notdir $*).Td | |
86 | POSTCOMPILE = mv -f $(DEPDIR)/$(notdir $*).Td $(DEPDIR)/$(notdir $*).d | |
87 | ||
88 | $(LIBRARY_PATH)/$(LIBRARY_NAME).a: $(LIBOBJS) | |
89 | @echo "[AR StO] $@" | |
90 | @$(AR) rcs $@ $^ | |
91 | ||
92 | $(LIBRARY_PATH)/$(LIBRARY_NAME).so: $(LIBOBJS) | |
93 | @echo "[LD ShO] $@" | |
94 | @$(LD) $(LIBCFLAGS) $(LIBLDFLAGS) $^ -o $@ | |
95 | ||
96 | #$(BINARY_NAME): $(OBJS) $(LIBOBJS) | |
97 | # @echo "[LD ] $@" | |
98 | # @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ | |
99 | ||
100 | $(BINARY_NAME): $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
101 | @echo "[LD ] $@" | |
102 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ | |
103 | ||
104 | $(BINARY_NAME).static: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
105 | @echo "[LD ] $@" | |
106 | @$(LD) $(CFLAGS) $(STATICLIBLDFLAGS) $^ $(LDLIBS) -o $@ | |
107 | ||
108 | $(BINARY_NAME).dynamic: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).so | |
109 | @echo "[LD ] $@" | |
110 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ | |
111 | ||
112 | $(OBJDIR)/%.o: $(SRC_PATH)/%.c $(DEPDIR)/%.d | |
113 | @echo "[C ] $(notdir $*)" | |
114 | @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@ | |
115 | @$(POSTCOMPILE) | |
116 | ||
117 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS)))) | |
118 | ||
119 | $(OBJDIR)/%.o: $(LIBRARY_PATH)/%.c $(DEPDIR)/%.d | |
120 | @echo "[C ] $(notdir $*)" | |
121 | @$(CC) $(DEPFLAGS) $(LIBCFLAGS) -c $< -o $@ | |
122 | @$(POSTCOMPILE) | |
123 | ||
124 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(LIBSRCS)))) | |
125 | ||
126 | $(DEPDIR)/%.d: ; | |
127 | ||
128 | .PRECIOUS: $(DEPDIR)/%.d | |
129 | ||
130 | #FIXME: add an install target | |
131 | ||
132 | clean: | |
133 | @echo "[CLN]" | |
134 | -@rm -r $(BUILDDIR) | |
135 | -@rm $(BINARY_NAME) | |
136 | -@rm $(BINARY_NAME).static | |
137 | -@rm $(BINARY_NAME).dynamic | |
138 | -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
139 | -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).so | |
140 | ||
141 | disassemble: $(BINARY_NAME) | |
142 | objdump -d $< | less | |
143 | ||
144 | symbols: $(BINARY_NAME) | |
145 | objdump -t $< | sort | less |