below is my Makefile using to execute my numerical code.I would like to know the time taken by the CPU to execute these C programmes.#MakefileLDFLAGS       = -DN_DIM=3#LDFLAGS       = -DN_DIM=3  -DDEBUG=5LIBS          = -lstdc++#CC            = icc -O3 -xT -parallel -fp-model source#CC            = icc -O3 -xT -parallelCC            = icc -O3#CC            = g++ -O3#CC            = g++ -WallPROGRAM       = fem_pztOBJS          = pzcord.o       chg_stdi.o  element.o  gl2loc.o      print.o \                add.o          force.o     solve.o    hexa_shape.o  clear.o \                alloc.o        form_k.o    input.o    emsolve.o     hexa_bmatx.o \                gauss_const.o  fatstep.o   newmark.o  mmatx.o$(PROGRAM) : $(OBJS)    $(CC) $(LIBS) -o $@ $^.cpp.o:    $(CC) $(LDFLAGS) -c $<clean:    rm -f $(OBJS) $(PROGRAM)
How to determine the CPU time of the execute of Makefile in linux or Unix?
linux;make;time;profiling