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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 | |
ee5eaefb | 20 | BINARY_NAME:=exo2 |
49a168a5 | 21 | SRC_PATH:=src |
ee5eaefb | 22 | LIBRARY_NAME:=libexo2 |
49a168a5 | 23 | LIBRARY_PATH:=lib |
ee5eaefb | 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 | ||
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31 | CC=gcc |
32 | LD=gcc | |
33 | AR=ar | |
34 | ||
35 | WARN_FLAGS = -Wall -Wextra | |
36 | STD_FLAG = -std=c11 | |
5d640630 | 37 | UNAME := $(shell uname -o) |
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38 | |
39 | ifeq ($(BUILD_TYPE),debug) | |
40 | BUILDDIR := .build/debug | |
41 | DEBUG_FLAG = -g | |
42 | STRIP_FLAG = | |
43 | OPTI_FLAG = -O0 | |
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44 | LTO_SUPPORT = yes |
45 | GOLD_SUPPORT = yes | |
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46 | else |
47 | BUILDDIR := .build/release | |
48 | DEBUG_FLAG = | |
49 | STRIP_FLAG = -s | |
bb39798e | 50 | OPTI_FLAG = -O3 |
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51 | LTO_SUPPORT = yes |
52 | GOLD_SUPPORT = yes | |
53 | endif | |
54 | ||
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55 | BINARY_SUFFIX := |
56 | DLIB_PREFIX := | |
57 | SDLIB_PREFIX := | |
58 | DLIB_SUFFIX := .so | |
59 | SLIB_SUFFIX := .a | |
60 | ||
61 | OBJDIR := $(BUILDDIR)/objs | |
62 | $(shell mkdir -p $(OBJDIR)) | |
63 | ||
64 | SRCS=$(wildcard $(SRC_PATH)/*.c) | |
65 | LIBSRCS=$(wildcard $(LIBRARY_PATH)/*.c) | |
66 | OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(SRCS))) | |
67 | LIBOBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(LIBSRCS))) | |
68 | ||
69 | DEPDIR := $(BUILDDIR)/deps | |
70 | $(shell mkdir -p $(DEPDIR)) | |
71 | DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$(notdir $*).Td | |
72 | POSTCOMPILE = mv -f $(DEPDIR)/$(notdir $*).Td $(DEPDIR)/$(notdir $*).d | |
73 | ||
5d640630 | 74 | ifeq ($(UNAME),Cygwin) |
ee5eaefb | 75 | CYGWIN_DLIBRARY_NAME := $(subst lib,cyg,$(LIBRARY_NAME)) |
5d640630 | 76 | GOLD_SUPPORT = no |
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77 | BINARY_SUFFIX := .exe |
78 | DLIB_SUFFIX := .dll | |
ee5eaefb | 79 | CYGWIN_LDLIBS_NOARCHIVE := |
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80 | CYGWIN_LIBLDFLAGS := -Wl,--out-implib=$(LIBRARY_PATH)/$(DLIB_PREFIX)$(LIBRARY_NAME)$(DLIB_SUFFIX).a \ |
81 | -Wl,--export-all-symbols \ | |
82 | -Wl,--enable-auto-import | |
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83 | endif |
84 | ||
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85 | ifeq ($(LTO_SUPPORT),yes) |
86 | CFLAGS_LTO = -flto -ffat-lto-objects | |
87 | LDFLAGS_LTO = -fuse-linker-plugin -flto | |
88 | endif | |
89 | ||
90 | ifeq ($(GOLD_SUPPORT),yes) | |
91 | LDFLAGS_GOLD = -fuse-ld=gold | |
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92 | endif |
93 | ||
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94 | # Putting header files in the source directory is not the purpose of this INCLUDES_PATH variable |
95 | INCLUDES_PATH := $(INCLUDES_PATH) -I$(LIBRARY_PATH) | |
96 | CFLAGS := $(CFLAGS) $(CFLAGS_LTO) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) $(INCLUDES_PATH) | |
49a168a5 | 97 | LIBCFLAGS := -fPIC $(CFLAGS) |
aae22ca2 | 98 | LDFLAGS := $(LDFLAGS) $(LDFLAGS_LTO) $(LDFLAGS_GOLD) $(STRIP_FLAG) |
a5a96953 | 99 | LIBLDFLAGS := -shared $(LDFLAGS) |
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100 | STATICLIBLDFLAGS := -static $(LDFLAGS) |
101 | LDLIBS := $(LDLIBS) -L$(LIBRARY_PATH) -l$(BINARY_NAME) | |
a5a96953 | 102 | |
16840855 | 103 | all: $(BINARY_NAME)$(BINARY_SUFFIX) $(BINARY_NAME).dynamic$(BINARY_SUFFIX) $(BINARY_NAME).static$(BINARY_SUFFIX) |
a5a96953 | 104 | |
16840855 | 105 | $(LIBRARY_PATH)/$(SLIB_PREFIX)$(LIBRARY_NAME)$(SLIB_SUFFIX): $(LIBOBJS) |
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106 | @echo "[AR StO] $@" |
107 | @$(AR) rcs $@ $^ | |
108 | ||
16840855 | 109 | ifeq ($(UNAME),Cygwin) |
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110 | $(LIBRARY_PATH)/$(DLIB_PREFIX)$(LIBRARY_NAME)$(DLIB_SUFFIX).a: $(LIBRARY_PATH)/$(DLIB_PREFIX)$(CYGWIN_DLIBRARY_NAME)$(DLIB_SUFFIX) |
111 | $(LIBRARY_PATH)/$(DLIB_PREFIX)$(CYGWIN_DLIBRARY_NAME)$(DLIB_SUFFIX): $(LIBOBJS) | |
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112 | @echo "[LD DLL] $@" |
113 | @$(LD) $(LIBCFLAGS) $(LIBLDFLAGS) $(CYGWIN_LIBLDFLAGS) -Wl,--whole-archive $^ -Wl,--no-whole-archive $(CYGWIN_LDLIBS_NOARCHIVE) -o $@ | |
114 | else | |
115 | $(LIBRARY_PATH)/$(DLIB_PREFIX)$(LIBRARY_NAME)$(DLIB_SUFFIX): $(LIBOBJS) | |
a5a96953 | 116 | @echo "[LD ShO] $@" |
49a168a5 | 117 | @$(LD) $(LIBCFLAGS) $(LIBLDFLAGS) $^ -o $@ |
16840855 | 118 | endif |
a5a96953 | 119 | |
16840855 | 120 | #$(BINARY_NAME)$(BINARY_SUFFIX): $(OBJS) $(LIBOBJS) |
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121 | # @echo "[LD ] $@" |
122 | # @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ | |
a5a96953 | 123 | |
16840855 | 124 | $(BINARY_NAME)$(BINARY_SUFFIX): $(OBJS) $(LIBRARY_PATH)/$(SLIB_PREFIX)$(LIBRARY_NAME)$(SLIB_SUFFIX) |
5553a759 | 125 | @echo "[LD ] $@" |
49a168a5 | 126 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ |
5553a759 | 127 | |
16840855 | 128 | $(BINARY_NAME).static$(BINARY_SUFFIX): $(OBJS) $(LIBRARY_PATH)/$(SLIB_PREFIX)$(LIBRARY_NAME)$(SLIB_SUFFIX) |
a5a96953 | 129 | @echo "[LD ] $@" |
49a168a5 | 130 | @$(LD) $(CFLAGS) $(STATICLIBLDFLAGS) $^ $(LDLIBS) -o $@ |
a5a96953 | 131 | |
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132 | ifeq ($(UNAME),Cygwin) |
133 | $(BINARY_NAME).dynamic$(BINARY_SUFFIX): $(OBJS) $(LIBRARY_PATH)/$(DLIB_PREFIX)$(LIBRARY_NAME)$(DLIB_SUFFIX).a | |
134 | else | |
135 | $(BINARY_NAME).dynamic$(BINARY_SUFFIX): $(OBJS) $(LIBRARY_PATH)/$(DLIB_PREFIX)$(LIBRARY_NAME)$(DLIB_SUFFIX) | |
136 | endif | |
a5a96953 | 137 | @echo "[LD ] $@" |
49a168a5 | 138 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ |
a5a96953 | 139 | |
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140 | $(OBJDIR)/%.o: $(SRC_PATH)/%.c $(DEPDIR)/%.d |
141 | @echo "[C ] $(notdir $*)" | |
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142 | @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@ |
143 | @$(POSTCOMPILE) | |
144 | ||
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145 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS)))) |
146 | ||
147 | $(OBJDIR)/%.o: $(LIBRARY_PATH)/%.c $(DEPDIR)/%.d | |
148 | @echo "[C ] $(notdir $*)" | |
149 | @$(CC) $(DEPFLAGS) $(LIBCFLAGS) -c $< -o $@ | |
150 | @$(POSTCOMPILE) | |
151 | ||
152 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(LIBSRCS)))) | |
153 | ||
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154 | $(DEPDIR)/%.d: ; |
155 | ||
156 | .PRECIOUS: $(DEPDIR)/%.d | |
157 | ||
49a168a5 | 158 | #FIXME: add an install target |
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159 | |
160 | clean: | |
161 | @echo "[CLN]" | |
162 | -@rm -r $(BUILDDIR) | |
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163 | -@rm $(BINARY_NAME)$(BINARY_SUFFIX) |
164 | -@rm $(BINARY_NAME).static$(BINARY_SUFFIX) | |
165 | -@rm $(BINARY_NAME).dynamic$(BINARY_SUFFIX) | |
166 | -@rm $(LIBRARY_PATH)/$(SLIB_PREFIX)$(LIBRARY_NAME)$(SLIB_SUFFIX) | |
16840855 | 167 | ifeq ($(UNAME),Cygwin) |
ee5eaefb | 168 | -@rm $(LIBRARY_PATH)/$(DLIB_PREFIX)$(CYGWIN_DLIBRARY_NAME)$(DLIB_SUFFIX) |
16840855 | 169 | -@rm $(LIBRARY_PATH)/$(DLIB_PREFIX)$(LIBRARY_NAME)$(DLIB_SUFFIX).a |
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170 | else |
171 | -@rm $(LIBRARY_PATH)/$(DLIB_PREFIX)$(LIBRARY_NAME)$(DLIB_SUFFIX) | |
16840855 | 172 | endif |
a5a96953 | 173 | |
16840855 | 174 | disassemble: $(BINARY_NAME)$(BINARY_SUFFIX) |
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175 | objdump -d $< | less |
176 | ||
16840855 | 177 | symbols: $(BINARY_NAME)$(BINARY_SUFFIX) |
a5a96953 | 178 | objdump -t $< | sort | less |