TP_13/exo1/Makefile

   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=exo1
  21 SRC_PATH:=src
  22 LIBRARY_NAME=libexo1
  23 LIBRARY_PATH:=lib
  24 BUILD_TYPE=debug
  25 #BUILD_TYPE=release
  26
  27 # ====================================
  28 # DO NOT CHANGE STUFF BEYOND THIS LINE
  29 # ====================================
  30
  31 all: $(BINARY_NAME) $(BINARY_NAME).dynamic $(BINARY_NAME).static
  32
  33 CC=gcc
  34 LD=gcc
  35 AR=ar
  36
  37 WARN_FLAGS = -Wall -Wextra
  38 STD_FLAG = -std=c11
  39
  40 ifeq ($(BUILD_TYPE),debug)
  41 BUILDDIR := .build/debug
  42 DEBUG_FLAG = -g
  43 STRIP_FLAG =
  44 OPTI_FLAG = -O0
  45 LTO_SUPPORT = yes
  46 GOLD_SUPPORT = yes
  47 else
  48 BUILDDIR := .build/release
  49 DEBUG_FLAG =
  50 STRIP_FLAG = -s
  51 OPTI_FLAG = -O3
  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
  63 endif
  64
  65 # Putting header files in the source directory is not the purpose of this INCLUDES variable
  66 INCLUDES := $(INCLUDES) -I$(LIBRARY_PATH)
  67 CFLAGS := $(CFLAGS) $(CFLAGS_LTO) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) $(INCLUDES)
  68 LIBCFLAGS := -fPIC $(CFLAGS)
  69 LDFLAGS := $(LDFLAGS) $(LDFLAGS_LTO) $(LDFLAGS_GOLD) $(STRIP_FLAG)
  70 LIBLDFLAGS := -shared $(LDFLAGS)
  71 STATICLIBLDFLAGS := -static $(LDFLAGS)
  72 LDLIBS := $(LDLIBS) -L$(LIBRARY_PATH) -l$(BINARY_NAME)
  73
  74 OBJDIR := $(BUILDDIR)/objs
  75 $(shell mkdir -p $(OBJDIR))
  76
  77 SRCS=$(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)))
  81
  82 DEPDIR := $(BUILDDIR)/deps
  83 $(shell mkdir -p $(DEPDIR))
  84 DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$(notdir $*).Td
  85 POSTCOMPILE = mv -f $(DEPDIR)/$(notdir $*).Td $(DEPDIR)/$(notdir $*).d
  86
  87 $(LIBRARY_PATH)/$(LIBRARY_NAME).a: $(LIBOBJS)
  88         @echo "[AR StO] $@"
  89         @$(AR) rcs $@ $^
  90
  91 $(LIBRARY_PATH)/$(LIBRARY_NAME).so: $(LIBOBJS)
  92         @echo "[LD ShO] $@"
  93         @$(LD) $(LIBCFLAGS) $(LIBLDFLAGS) $^ -o $@
  94
  95 #$(BINARY_NAME): $(OBJS) $(LIBOBJS)
  96 #       @echo "[LD ] $@"
  97 #       @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
  98
  99 $(BINARY_NAME): $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a
 100         @echo "[LD ] $@"
 101         @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
 102
 103 $(BINARY_NAME).static: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a
 104         @echo "[LD ] $@"
 105         @$(LD) $(CFLAGS) $(STATICLIBLDFLAGS) $^ $(LDLIBS) -o $@
 106
 107 $(BINARY_NAME).dynamic: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).so
 108         @echo "[LD ] $@"
 109         @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
 110
 111 $(OBJDIR)/%.o: $(SRC_PATH)/%.c $(DEPDIR)/%.d
 112         @echo "[C  ] $(notdir $*)"
 113         @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@
 114         @$(POSTCOMPILE)
 115
 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
 125 $(DEPDIR)/%.d: ;
 126
 127 .PRECIOUS: $(DEPDIR)/%.d
 128
 129 #FIXME: add an install target
 130
 131 clean:
 132         @echo "[CLN]"
 133         -@rm -r $(BUILDDIR)
 134         -@rm $(BINARY_NAME)
 135         -@rm $(BINARY_NAME).static
 136         -@rm $(BINARY_NAME).dynamic
 137         -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).a
 138         -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).so
 139
 140 disassemble: $(BINARY_NAME)
 141         objdump -d $< | less
 142
 143 symbols: $(BINARY_NAME)
 144         objdump -t $< | sort | less