TP_13 exo1: Commit the basic exercice structure with a smart buildsystem

[TD_C.git] / TP_13 / exo1 / Makefile

# Sample Makefile to build simple project.
#
# This Makefile expect all source files (.c) to be at the same level, in the
# current working directory.
#
# It will automatically generate dependencies, compile all files, and produce a
# binary using the provided name.
#
# Set BINARY_NAME to the name of the binary file to build.
# Set BUILD_TYPE to either debug or release
#
# Automatic dependencies code from:
# http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/#tldr
BINARY_NAME=exo1
BINARY_PATH:=src
LIBRARY_NAME=libexo1
LIBRARY_PATH:=lib
#LDLIBS=-L$(LIBRARY_PATH) -l$(BINARY_NAME)
BUILD_TYPE=debug

# ====================================
# DO NOT CHANGE STUFF BEYOND THIS LINE
# ====================================

all: $(BINARY_NAME) $(BINARY_NAME).dynamic $(BINARY_NAME).static

CC=gcc
LD=gcc
AR=ar

WARN_FLAGS = -Wall -Wextra
STD_FLAG = -std=c11

ifeq ($(BUILD_TYPE),debug)
BUILDDIR := .build/debug
DEBUG_FLAG = -g
STRIP_FLAG =
OPTI_FLAG = -O0
else
BUILDDIR := .build/release
DEBUG_FLAG =
STRIP_FLAG = -s
OPTI_FLAG = -O3
endif

#FIXME: Add a way to better control the library build flag
CFLAGS := -fPIC $(CFLAGS) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG)
LDFLAGS := $(LDFLAGS) $(STRIP_FLAG)
LIBLDFLAGS := -shared $(LDFLAGS)
STATICLIBLDFLAGS := -static $(LDFLAGS)

OBJDIR := $(BUILDDIR)/objs
$(shell mkdir -p $(OBJDIR))

SRCS=$(wildcard $(BINARY_PATH)/*.c)
LIBSRCS=$(wildcard $(LIBRARY_PATH)/*.c)
OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(SRCS)))
LIBOBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(LIBSRCS)))

DEPDIR := $(BUILDDIR)/deps
$(shell mkdir -p $(DEPDIR))
DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$(notdir $*).Td
POSTCOMPILE = mv -f $(DEPDIR)/$(notdir $*).Td $(DEPDIR)/$(notdir $*).d

print: 
	@echo $(basename $(notdir $(SRCS)))
	@echo $(notdir $(SRCS))
	@echo $(DEPDIR)/%d
	@echo $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS))))
	@echo $(OBJS) $(LIBOBJS)
	@echo $(SRCS) $(LIBSRCS)
	@echo $(POSTCOMPILE)

$(LIBRARY_PATH)/$(LIBRARY_NAME).a: $(LIBOBJS)
	@echo "[AR StO] $@"
	@$(AR) rcs $@ $^

$(LIBRARY_PATH)/$(LIBRARY_NAME).so: $(LIBOBJS)
	@echo "[LD ShO] $@"
	@$(LD) $(CFLAGS) $(LIBLDFLAGS) $^ $(LDLIBS) -o $@

#$(BINARY_NAME): $(OBJS) $(LIBOBJS)
#	@echo "[LD ] $@"
#	$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@

$(BINARY_NAME): $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a
	@echo "[LD ] $@"
	@$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LOCALLDLIBS) $(LDLIBS) -o $@

LOCALLDLIBS=-L$(LIBRARY_PATH) -l$(BINARY_NAME)
$(BINARY_NAME).static: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a
	@echo "[LD ] $@"
	@$(LD) $(CFLAGS) $(STATICLIBLDFLAGS) $^ $(LOCALLDLIBS) $(LDLIBS) -o $@

#$(BINARY_NAME).staticlocal: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a
#	@echo "[LD ] $@"
#	@$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LOCALLDLIBS) $(LDLIBS) -o $@

$(BINARY_NAME).dynamic: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).so
	@echo "[LD ] $@"
	@$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LOCALLDLIBS) $(LDLIBS) -o $@

$(OBJS): $(SRCS) $(DEPDIR)/%.d
	@echo "[C  ] $*"
	@$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@
	@$(POSTCOMPILE)

include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS))))

$(LIBOBJS): $(LIBSRCS) $(DEPDIR)/%.d
	@echo "[C  ] $*"
	@$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@
	@$(POSTCOMPILE)

include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(LIBSRCS))))

$(DEPDIR)/%.d: ;

.PRECIOUS: $(DEPDIR)/%.d

clean:
	@echo "[CLN]"
	-@rm -r $(BUILDDIR)
	-@rm $(BINARY_NAME)
	-@rm $(BINARY_NAME).static
	-@rm $(BINARY_NAME).dynamic
	-@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).a
	-@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).so

disassemble: $(BINARY_NAME)
	objdump -d $< | less

symbols: $(BINARY_NAME)
	objdump -t $< | sort | less