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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 |
2fa527aa | 7 | # $(LIBRARY_PATH) directory. |
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8 | # |
9 | # It will automatically generate dependencies, compile all files, and produce a | |
2fa527aa | 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. | |
eddc018d JB |
17 | # |
18 | # Automatic dependencies code from: | |
19 | # http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/#tldr | |
20 | BINARY_NAME=exo1 | |
a9c4c876 | 21 | SRC_PATH:=src |
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22 | LIBRARY_NAME=libexo1 |
23 | LIBRARY_PATH:=lib | |
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24 | BUILD_TYPE=debug |
25 | #BUILD_TYPE=release | |
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26 | |
27 | # ==================================== | |
28 | # DO NOT CHANGE STUFF BEYOND THIS LINE | |
29 | # ==================================== | |
30 | ||
31 | all: $(BINARY_NAME) $(BINARY_NAME).dynamic $(BINARY_NAME).static | |
32 | ||
33 | CC=gcc | |
34 | LD=gcc | |
35 | AR=ar | |
36 | ||
37 | WARN_FLAGS = -Wall -Wextra | |
38 | STD_FLAG = -std=c11 | |
5d640630 | 39 | UNAME := $(shell uname -o) |
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40 | |
41 | ifeq ($(BUILD_TYPE),debug) | |
42 | BUILDDIR := .build/debug | |
43 | DEBUG_FLAG = -g | |
44 | STRIP_FLAG = | |
45 | OPTI_FLAG = -O0 | |
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46 | LTO_SUPPORT = yes |
47 | GOLD_SUPPORT = yes | |
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48 | else |
49 | BUILDDIR := .build/release | |
50 | DEBUG_FLAG = | |
51 | STRIP_FLAG = -s | |
52 | OPTI_FLAG = -O3 | |
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53 | LTO_SUPPORT = yes |
54 | GOLD_SUPPORT = yes | |
55 | endif | |
56 | ||
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57 | ifeq ($(UNAME),Cygwin) |
58 | GOLD_SUPPORT = no | |
59 | endif | |
60 | ||
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61 | ifeq ($(LTO_SUPPORT),yes) |
62 | CFLAGS_LTO = -flto -ffat-lto-objects | |
63 | LDFLAGS_LTO = -fuse-linker-plugin -flto | |
64 | endif | |
65 | ||
66 | ifeq ($(GOLD_SUPPORT),yes) | |
67 | LDFLAGS_GOLD = -fuse-ld=gold | |
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68 | endif |
69 | ||
bdbc4f52 | 70 | # Putting header files in the source directory is not the purpose of this INCLUDES variable |
475ee86d | 71 | INCLUDES := $(INCLUDES) -I$(LIBRARY_PATH) |
25dc671f | 72 | CFLAGS := $(CFLAGS) $(CFLAGS_LTO) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) $(INCLUDES) |
a80f64d2 | 73 | LIBCFLAGS := -fPIC $(CFLAGS) |
25dc671f | 74 | LDFLAGS := $(LDFLAGS) $(LDFLAGS_LTO) $(LDFLAGS_GOLD) $(STRIP_FLAG) |
eddc018d JB |
75 | LIBLDFLAGS := -shared $(LDFLAGS) |
76 | STATICLIBLDFLAGS := -static $(LDFLAGS) | |
a80f64d2 | 77 | LDLIBS := $(LDLIBS) -L$(LIBRARY_PATH) -l$(BINARY_NAME) |
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78 | |
79 | OBJDIR := $(BUILDDIR)/objs | |
80 | $(shell mkdir -p $(OBJDIR)) | |
81 | ||
a9c4c876 | 82 | SRCS=$(wildcard $(SRC_PATH)/*.c) |
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83 | LIBSRCS=$(wildcard $(LIBRARY_PATH)/*.c) |
84 | OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(SRCS))) | |
85 | LIBOBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(LIBSRCS))) | |
86 | ||
87 | DEPDIR := $(BUILDDIR)/deps | |
88 | $(shell mkdir -p $(DEPDIR)) | |
89 | DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$(notdir $*).Td | |
90 | POSTCOMPILE = mv -f $(DEPDIR)/$(notdir $*).Td $(DEPDIR)/$(notdir $*).d | |
91 | ||
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92 | $(LIBRARY_PATH)/$(LIBRARY_NAME).a: $(LIBOBJS) |
93 | @echo "[AR StO] $@" | |
94 | @$(AR) rcs $@ $^ | |
95 | ||
96 | $(LIBRARY_PATH)/$(LIBRARY_NAME).so: $(LIBOBJS) | |
97 | @echo "[LD ShO] $@" | |
a80f64d2 | 98 | @$(LD) $(LIBCFLAGS) $(LIBLDFLAGS) $^ -o $@ |
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99 | |
100 | #$(BINARY_NAME): $(OBJS) $(LIBOBJS) | |
101 | # @echo "[LD ] $@" | |
a80f64d2 | 102 | # @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ |
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103 | |
104 | $(BINARY_NAME): $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
105 | @echo "[LD ] $@" | |
a80f64d2 | 106 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ |
eddc018d | 107 | |
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108 | $(BINARY_NAME).static: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a |
109 | @echo "[LD ] $@" | |
a80f64d2 | 110 | @$(LD) $(CFLAGS) $(STATICLIBLDFLAGS) $^ $(LDLIBS) -o $@ |
eddc018d | 111 | |
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112 | $(BINARY_NAME).dynamic: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).so |
113 | @echo "[LD ] $@" | |
a80f64d2 | 114 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ |
eddc018d | 115 | |
a9c4c876 | 116 | $(OBJDIR)/%.o: $(SRC_PATH)/%.c $(DEPDIR)/%.d |
a80f64d2 | 117 | @echo "[C ] $(notdir $*)" |
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118 | @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@ |
119 | @$(POSTCOMPILE) | |
120 | ||
121 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS)))) | |
122 | ||
a9c4c876 | 123 | $(OBJDIR)/%.o: $(LIBRARY_PATH)/%.c $(DEPDIR)/%.d |
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124 | @echo "[C ] $(notdir $*)" |
125 | @$(CC) $(DEPFLAGS) $(LIBCFLAGS) -c $< -o $@ | |
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126 | @$(POSTCOMPILE) |
127 | ||
128 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(LIBSRCS)))) | |
129 | ||
130 | $(DEPDIR)/%.d: ; | |
131 | ||
132 | .PRECIOUS: $(DEPDIR)/%.d | |
133 | ||
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134 | #FIXME: add an install target |
135 | ||
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136 | clean: |
137 | @echo "[CLN]" | |
138 | -@rm -r $(BUILDDIR) | |
139 | -@rm $(BINARY_NAME) | |
140 | -@rm $(BINARY_NAME).static | |
141 | -@rm $(BINARY_NAME).dynamic | |
142 | -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
143 | -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).so | |
144 | ||
145 | disassemble: $(BINARY_NAME) | |
146 | objdump -d $< | less | |
147 | ||
148 | symbols: $(BINARY_NAME) | |
149 | objdump -t $< | sort | less |