TP_11/exo2/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=exo2
  21 SRC_PATH:=src
  22 LIBRARY_NAME=libexo2
  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 UNAME := $(shell uname -o)
  40
  41 ifeq ($(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 ($(UNAME),Cygwin)
  58 GOLD_SUPPORT = no
  59 endif
  60
  61 ifeq ($(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
  68 endif
  69
  70 # Putting header files in the source directory is not the purpose of this INCLUDES variable
  71 INCLUDES := $(INCLUDES) -I$(LIBRARY_PATH)
  72 CFLAGS := $(CFLAGS) $(CFLAGS_LTO) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) $(INCLUDES)
  73 LIBCFLAGS := -fPIC $(CFLAGS)
  74 LDFLAGS := $(LDFLAGS) $(LDFLAGS_LTO) $(LDFLAGS_GOLD) $(STRIP_FLAG)
  75 LIBLDFLAGS := -shared $(LDFLAGS)
  76 STATICLIBLDFLAGS := -static $(LDFLAGS)
  77 LDLIBS := $(LDLIBS) -L$(LIBRARY_PATH) -l$(BINARY_NAME)
  78
  79 OBJDIR := $(BUILDDIR)/objs
  80 $(shell mkdir -p $(OBJDIR))
  81
  82 SRCS=$(wildcard $(SRC_PATH)/*.c)
  83 LIBSRCS=$(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
  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] $@"
  98         @$(LD) $(LIBCFLAGS) $(LIBLDFLAGS) $^ -o $@
  99
 100 #$(BINARY_NAME): $(OBJS) $(LIBOBJS)
 101 #       @echo "[LD ] $@"
 102 #       @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
 103
 104 $(BINARY_NAME): $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a
 105         @echo "[LD ] $@"
 106         @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
 107
 108 $(BINARY_NAME).static: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a
 109         @echo "[LD ] $@"
 110         @$(LD) $(CFLAGS) $(STATICLIBLDFLAGS) $^ $(LDLIBS) -o $@
 111
 112 $(BINARY_NAME).dynamic: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).so
 113         @echo "[LD ] $@"
 114         @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
 115
 116 $(OBJDIR)/%.o: $(SRC_PATH)/%.c $(DEPDIR)/%.d
 117         @echo "[C  ] $(notdir $*)"
 118         @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@
 119         @$(POSTCOMPILE)
 120
 121 include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS))))
 122
 123 $(OBJDIR)/%.o: $(LIBRARY_PATH)/%.c $(DEPDIR)/%.d
 124         @echo "[C  ] $(notdir $*)"
 125         @$(CC) $(DEPFLAGS) $(LIBCFLAGS) -c $< -o $@
 126         @$(POSTCOMPILE)
 127
 128 include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(LIBSRCS))))
 129
 130 $(DEPDIR)/%.d: ;
 131
 132 .PRECIOUS: $(DEPDIR)/%.d
 133
 134 #FIXME: add an install target
 135
 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