Makefile example 1

#

# Introduction

#

# This is a Makefile example which can be used to build library or program from

# given directories. These directories could be at the same folder of the Makefile

# itself, or they could exist in other levels of the Makefile, sub-folders or

# parent-folders. 

#

# The Makefile searches all the .cpp files in the given folders and compile them

# into object files and link them into library or program. It generates dependency

# files automatically so that it can catch any change or the source files or 

# related header files.

#

# All the output of the make process is put in $(ODIR) folder. The default value

# is 'Build', but can be overriden with 'ODIR=xxx' when executing 'make'.   

#

#

# The folder where the Makefile exists

PWD := $(abspath $(shell pwd))

# A common folder which is parent-folder of all given folders in $(MODULES)

TOP_DIR := $(abspath ../../..)

# The default output folder, could be overriden with 'ODIR=xxx' when 'make'.

ODIR ?= Build

# The final targat. Should define only one of them: PROG or LIB

PROG := 

LIB := libapclient.a

# The modules (directories) that need to be built. All the .cpp files in these

# directories will be built automatically. They should be specified with prefix 

# of$(TOP_DIR).

MODULES   := \

  $(TOP_DIR)/Dingo/Client/AccessPoint/ServiceProxy \

  $(TOP_DIR)/Dingo/Client/AccessPoint/ServiceProxy/gSoap \

  $(TOP_DIR)/Dingo/Client/AccessPoint/Services/IncomingEventService/Source/DataObjects \

  $(TOP_DIR)/Dingo/Client/AccessPoint/Services/IncomingEventService/Source/MetadataObjects \

  $(TOP_DIR)/Dingo/Client/AccessPoint/Services/IncomingEventService/Source/Services \

$(TOP_DIR)/Dingo/Gateway/Siemens.Gateway.Linux.Client \

$(TOP_DIR)/Dingo/Client/AccessPoint/TinyXML

# The external libs need to be linked. This is used when build program.

LIBS :=

# CFLAGS for compiling. -MD -MP must be kept.

CFLAGS := -MD -MP -g -I. \

-I$(TOP_DIR)/Dingo/Gateway \

 -I$(TOP_DIR)/Dingo/Gateway/PlatformSpecific/CPP \

-I$(TOP_DIR)/Dingo/Client/AccessPoint/Services/IncomingEventService \

-I$(TOP_DIR)/Dingo/Client/AccessPoint/TinyXML

# LDFLAGS for linking. It's only used when build program.

LDFLAGS :=

# Cross compile option 

ifneq ($(ARM),yes)

CROSS_COMPILE = 

endif

################################################################################

# Below part should be considered as standard and normally don't need to change!

################################################################################

SRC_DIRS  := $(MODULES)

BUILD_DIRS:= $(addprefix $(ODIR),$(subst $(TOP_DIR),,$(MODULES)))

SRCS      := $(foreach sdir,$(SRC_DIRS),$(wildcard $(sdir)/*.cpp))

OBJS := $(patsubst %.cpp,%.o,$(addprefix $(ODIR),$(subst $(TOP_DIR),,$(SRCS))))

DEPS      := $(OBJS:.o=.d)

INCLUDES  := $(addprefix -I,$(SRC_DIRS))

CFLAGS += $(INCLUDES)

CC        := $(CROSS_COMPILE)g++

LD        := $(CROSS_COMPILE)g++

AR := $(CROSS_COMPILE)ar

ECHO := echo

MKDIR := mkdir -p

RM := rm -rf

LN := ln -sf

vpath %.cpp $(SRC_DIRS)

define make-goal

$1/%.o : %.cpp

@$(ECHO) "CC   $$<"

@$(CC) $(CFLAGS) -c $$< -o $$@

endef

.PHONY: all checkdirs clean 

all: checkdirs $(ODIR)/$(LIB) $(ODIR)/$(PROG)

ifneq ($(PROG),)

$(ODIR)/$(PROG): $(OBJS)

@$(ECHO) "LD   $@"

@$(LD) -o $@ $(OBJS) $(LIBS) $(LDFLAGS)

endif

ifneq ($(LIB),)

$(ODIR)/$(LIB): $(OBJS)

@$(ECHO) "AR   $@"

@$(AR) crs $@ $(OBJS)

endif

checkdirs: $(BUILD_DIRS)

$(BUILD_DIRS):

@$(ECHO) "MKDIR  $@"

@$(MKDIR) -p $@

clean:

@$(RM) $(BUILD_DIRS) $(ODIR)

$(foreach bdir,$(BUILD_DIRS),$(eval $(call make-goal,$(bdir))))

-include $(DEPS)