Makefile_example

target    := test
main      := test
gpp       := /usr/bin/g++

shared_lib := testLib

INC :=
LIBS :=

sources = A.cpp B.cpp C.cpp

#topdir := .
#topdir := src
#sources := $(shell find $(topdir) -name "*.cpp" ! -path "$(topdir)/$(main).cpp")


opt  ?= -O3
dbg  ?= 
warn ?= -Wall #-Werror

cppflags     := $(opt) $(dbg) $(warn) -fPIC -fopenmp


A_INC = -I/A_DIR/INC
INC += $(A_INC)

#mkl lib
INTL_DIR = /intel_dir
INTL_LIB_DIR = $(INTL_DIR)/compiler/lib/intel64_lin
MKL_DIR = $(INTL_DIR)/mkl
MKL_INC = -I$(MKL_DIR)/include
MKL_LIB_DIR = $(MKL_DIR)/lib/intel64_lin
MKL_LIB = -Wl,-rpath,$(INTL_LIB_DIR) -L$(INTL_LIB_DIR) -liomp5 -Wl,-rpath,$(MKL_LIB_DIR) -L$(MKL_LIB_DIR) -lmkl_core -lmkl_gnu_thread -lmkl_intel_lp64
INC += $(MKL_INC)
LIBS += $(MKL_LIB)

# gcc lib
gpp_lib = /gcc_lib
LIBS += -Wl,-rpath,$(gpp_lib)

cppflags += $(INC)


all : $(target)

$(target): lib$(shared_lib).so $(main).o
	@echo "generating binary...$(target)"
	$(gpp) $(main).o -o $(target) -Bdynamic $(INC) $(LIBS) -Wl,-rpath,. -L. -l$(shared_lib) -fopenmp



objects :=  $(patsubst %.cpp,%.o,$(sources))

lib$(shared_lib).so : $(objects)
	@echo "showing all objs: " $(objects)
	@echo "linking shared lib $(shared_lib)..."
	$(gpp) -shared $(objects) $(INC) $(LIBS) -o $@
	@echo "shared lib generated."


%.o: %.cpp
	$(gpp) -c $^ $(cppflags) -o $@

clean:
	rm -f *.o *.so $(target) makefile.*dep



#----- Dependency Generation -----
#
# If a particular set of sources is non-empty, then have rules for
# generating the necessary dep files.
#

ccdep := ccdep.mk
cdep  := cdep.mk


depfiles =

ifneq ($(ccsources),)

depfiles += $(ccdep)
$(ccdep): $(ccsources)
	$(gpp) -MM $(ccsources) > $(ccdep)

else

$(ccdep):

endif


ifneq ($(csources),)

depfiles += $(cdep)
$(cdep): $(csources)
	$(gcc) -MM -x c $(csources) > $(cdep)

else

$(cdep):

endif

.PHONY: dep
dep: $(depfiles)