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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 | |
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4 | # $(SRC_PATH) directory. |
5 | # | |
8df01c74 | 6 | # This Makefile expect all embedded library source files (.c) to be at the same level, in the |
49a168a5 | 7 | # $(LIBRARY_PATH) directory. |
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8 | # |
9 | # It will automatically generate dependencies, compile all files, and produce a | |
49a168a5 | 10 | # binary using the provided name linked against the library if necessary. |
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11 | # |
12 | # Set BINARY_NAME to the name of the binary file to build. | |
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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. | |
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17 | # |
18 | # Automatic dependencies code from: | |
19 | # http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/#tldr | |
20 | BINARY_NAME=exo2 | |
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21 | SRC_PATH:=src |
22 | LIBRARY_NAME=libexo2 | |
23 | LIBRARY_PATH:=lib | |
a5a96953 | 24 | BUILD_TYPE=debug |
49a168a5 | 25 | #BUILD_TYPE=release |
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26 | |
27 | # ==================================== | |
28 | # DO NOT CHANGE STUFF BEYOND THIS LINE | |
29 | # ==================================== | |
30 | ||
49a168a5 | 31 | all: $(BINARY_NAME) $(BINARY_NAME).dynamic $(BINARY_NAME).static |
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32 | |
33 | CC=gcc | |
34 | LD=gcc | |
35 | AR=ar | |
36 | ||
37 | WARN_FLAGS = -Wall -Wextra | |
38 | STD_FLAG = -std=c11 | |
39 | ||
40 | ifeq ($(BUILD_TYPE),debug) | |
41 | BUILDDIR := .build/debug | |
42 | DEBUG_FLAG = -g | |
43 | STRIP_FLAG = | |
44 | OPTI_FLAG = -O0 | |
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45 | LTO_SUPPORT = yes |
46 | GOLD_SUPPORT = yes | |
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47 | else |
48 | BUILDDIR := .build/release | |
49 | DEBUG_FLAG = | |
50 | STRIP_FLAG = -s | |
bb39798e | 51 | OPTI_FLAG = -O3 |
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52 | LTO_SUPPORT = yes |
53 | GOLD_SUPPORT = yes | |
54 | endif | |
55 | ||
56 | ifeq ($(LTO_SUPPORT),yes) | |
57 | CFLAGS_LTO = -flto -ffat-lto-objects | |
58 | LDFLAGS_LTO = -fuse-linker-plugin -flto | |
59 | endif | |
60 | ||
61 | ifeq ($(GOLD_SUPPORT),yes) | |
62 | LDFLAGS_GOLD = -fuse-ld=gold | |
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63 | endif |
64 | ||
49a168a5 | 65 | # Putting header files in the source directory is not the purpose of this INCLUDES variable |
25dc671f | 66 | INCLUDES := $(INCLUDES) -I$(LIBRARY_PATH) |
aae22ca2 | 67 | CFLAGS := $(CFLAGS) $(CFLAGS_LTO) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) $(INCLUDES) |
49a168a5 | 68 | LIBCFLAGS := -fPIC $(CFLAGS) |
aae22ca2 | 69 | LDFLAGS := $(LDFLAGS) $(LDFLAGS_LTO) $(LDFLAGS_GOLD) $(STRIP_FLAG) |
a5a96953 | 70 | LIBLDFLAGS := -shared $(LDFLAGS) |
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71 | STATICLIBLDFLAGS := -static $(LDFLAGS) |
72 | LDLIBS := $(LDLIBS) -L$(LIBRARY_PATH) -l$(BINARY_NAME) | |
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73 | |
74 | OBJDIR := $(BUILDDIR)/objs | |
75 | $(shell mkdir -p $(OBJDIR)) | |
76 | ||
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77 | SRCS=$(wildcard $(SRC_PATH)/*.c) |
78 | LIBSRCS=$(wildcard $(LIBRARY_PATH)/*.c) | |
79 | OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(SRCS))) | |
80 | LIBOBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(LIBSRCS))) | |
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81 | |
82 | DEPDIR := $(BUILDDIR)/deps | |
83 | $(shell mkdir -p $(DEPDIR)) | |
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84 | DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$(notdir $*).Td |
85 | POSTCOMPILE = mv -f $(DEPDIR)/$(notdir $*).Td $(DEPDIR)/$(notdir $*).d | |
a5a96953 | 86 | |
49a168a5 | 87 | $(LIBRARY_PATH)/$(LIBRARY_NAME).a: $(LIBOBJS) |
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88 | @echo "[AR StO] $@" |
89 | @$(AR) rcs $@ $^ | |
90 | ||
49a168a5 | 91 | $(LIBRARY_PATH)/$(LIBRARY_NAME).so: $(LIBOBJS) |
a5a96953 | 92 | @echo "[LD ShO] $@" |
49a168a5 | 93 | @$(LD) $(LIBCFLAGS) $(LIBLDFLAGS) $^ -o $@ |
a5a96953 | 94 | |
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95 | #$(BINARY_NAME): $(OBJS) $(LIBOBJS) |
96 | # @echo "[LD ] $@" | |
97 | # @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ | |
a5a96953 | 98 | |
49a168a5 | 99 | $(BINARY_NAME): $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a |
5553a759 | 100 | @echo "[LD ] $@" |
49a168a5 | 101 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ |
5553a759 | 102 | |
49a168a5 | 103 | $(BINARY_NAME).static: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a |
a5a96953 | 104 | @echo "[LD ] $@" |
49a168a5 | 105 | @$(LD) $(CFLAGS) $(STATICLIBLDFLAGS) $^ $(LDLIBS) -o $@ |
a5a96953 | 106 | |
49a168a5 | 107 | $(BINARY_NAME).dynamic: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).so |
a5a96953 | 108 | @echo "[LD ] $@" |
49a168a5 | 109 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ |
a5a96953 | 110 | |
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111 | $(OBJDIR)/%.o: $(SRC_PATH)/%.c $(DEPDIR)/%.d |
112 | @echo "[C ] $(notdir $*)" | |
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113 | @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@ |
114 | @$(POSTCOMPILE) | |
115 | ||
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116 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS)))) |
117 | ||
118 | $(OBJDIR)/%.o: $(LIBRARY_PATH)/%.c $(DEPDIR)/%.d | |
119 | @echo "[C ] $(notdir $*)" | |
120 | @$(CC) $(DEPFLAGS) $(LIBCFLAGS) -c $< -o $@ | |
121 | @$(POSTCOMPILE) | |
122 | ||
123 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(LIBSRCS)))) | |
124 | ||
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125 | $(DEPDIR)/%.d: ; |
126 | ||
127 | .PRECIOUS: $(DEPDIR)/%.d | |
128 | ||
49a168a5 | 129 | #FIXME: add an install target |
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130 | |
131 | clean: | |
132 | @echo "[CLN]" | |
133 | -@rm -r $(BUILDDIR) | |
134 | -@rm $(BINARY_NAME) | |
5553a759 | 135 | -@rm $(BINARY_NAME).static |
a5a96953 | 136 | -@rm $(BINARY_NAME).dynamic |
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137 | -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).a |
138 | -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).so | |
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139 | |
140 | disassemble: $(BINARY_NAME) | |
141 | objdump -d $< | less | |
142 | ||
143 | symbols: $(BINARY_NAME) | |
144 | objdump -t $< | sort | less |