makefile undefined references to functions that are defined

Question

When trying to compile a project I have made I am getting a

undefined reference to `Timers::NextTimerTime(timeval*)'

which is a method I have defined in timers.cc, but am using in client.cpp. I have included the correct header file, but it can not find the definition in the timers.cc file.

CXX       =      g++
CPPFLAGS  =     -I. -g -Wall -fno-inline
FLAGS     =     ${CPPFLAGS} ${AC_DEFS}

all: client

default:
    all

tools.o: tools.cc tools.hh
    $(CXX) $(FLAGS) -c tools.cc

timers.o: timers.cc timers.hh
    $(CXX) $(FLAGS) -c timers.cc


client.o: client.cpp client.h
    $(CXX) $(FLAGS) -c client.cpp 


client:  client.o timers.o tools.o  
    $(CXX) $(FLAGS) client.o -o client

clean:
    rm -f client *.o

This code compiles in eclipse, but I can not generate a make file for it.

Answer 1

$(CXX) $(FLAGS) client.o -o client

您只链接client.o文件，而不是其他目标文件。