未定义对“xdr_int”的引用

Question

我正在做一个rpc作业。当我运行命令“make -f Makefile.add”时，它会抛出以下错误：

cc -g     -o add_client  add_clnt.o add_client.o add_xdr.o -lnsl 
/usr/bin/ld: add_clnt.o: in function `add_1':
/home/mridu/rpc/add_clnt.c:18: undefined reference to `xdr_int'
/usr/bin/ld: /home/mridu/rpc/add_clnt.c:18: undefined reference to `xdr_int'
/usr/bin/ld: add_client.o: in function `add_prog_1':
/home/mridu/rpc/add_client.c:18: undefined reference to `clnt_create'
/usr/bin/ld: /home/mridu/rpc/add_client.c:20: undefined reference to `clnt_pcreateerror'
/usr/bin/ld: /home/mridu/rpc/add_client.c:27: undefined reference to `clnt_perror'
/usr/bin/ld: add_xdr.o: in function `xdr_numbers':
/home/mridu/rpc/add_xdr.c:13: undefined reference to `xdr_int'
/usr/bin/ld: /home/mridu/rpc/add_xdr.c:15: undefined reference to `xdr_int'
collect2: error: ld returned 1 exit status
make: *** [Makefile.add:41: add_client] Error 1

以下代码是Makefile.add中的代码：

# This is a template Makefile generated by rpcgen

# Parameters

CLIENT = add_client
SERVER = add_server

SOURCES_CLNT.c =
SOURCES_CLNT.h =
SOURCES_SVC.c =
SOURCES_SVC.h =
SOURCES.x = add.x

TARGETS_SVC.c = add_svc.c add_server.c add_xdr.c
TARGETS_CLNT.c = add_clnt.c add_client.c add_xdr.c
TARGETS = add.h add_xdr.c add_clnt.c add_svc.c add_client.c add_server.c

OBJECTS_CLNT = $(SOURCES_CLNT.c:%.c=%.o) $(TARGETS_CLNT.c:%.c=%.o)
OBJECTS_SVC = $(SOURCES_SVC.c:%.c=%.o) $(TARGETS_SVC.c:%.c=%.o)
# Compiler flags 

CFLAGS += -g
LDLIBS += -lnsl
LIBS+= -ltirrp
QMAKE_CXXFLAGS+= -ltirpc
RPCGENFLAGS =

# Targets 

all : $(CLIENT) $(SERVER)

$(TARGETS) : $(SOURCES.x)
        rpcgen $(RPCGENFLAGS) $(SOURCES.x)

$(OBJECTS_CLNT) : $(SOURCES_CLNT.c) $(SOURCES_CLNT.h) $(TARGETS_CLNT.c)

$(OBJECTS_SVC) : $(SOURCES_SVC.c) $(SOURCES_SVC.h) $(TARGETS_SVC.c)

$(CLIENT) : $(OBJECTS_CLNT) 
        $(LINK.c) -o $(CLIENT) $(OBJECTS_CLNT) $(LDLIBS) 

$(SERVER) : $(OBJECTS_SVC)
        $(LINK.c) -o $(SERVER) $(OBJECTS_SVC) $(LDLIBS)

 clean:
        $(RM) core $(TARGETS) $(OBJECTS_CLNT) $(OBJECTS_SVC) $(CLIENT) $(SERVER)

以下是add.x文件中的代码：

struct numbers{
        int num1;
        int num2;
};

program ADD_PROG{
        version ADD_VER{
                int ADD( numbers )=1;
        }=1;
}=0x23456789;

我尝试添加编译器标志：

LIBS+= -ltirrp
QMAKE_CXXFLAGS+= -ltirpc

但是还是不行。帮我解决问题！！

Answer 1

也许有点晚了，你可能已经解决了它，但是，我认为你应该将

LIBS

更改为：

LIBS += -ltirpc

Answer 2

将此行添加到您的 Makefile 中 -

LIBS += -ltirpc

同时更新这些行-

$(CLIENT) : $(OBJECTS_CLNT) 
    $(LINK.c) -o $(CLIENT) $(OBJECTS_CLNT) $(LDLIBS) $(LIBS)

$(SERVER) : $(OBJECTS_SVC) 
    $(LINK.c) -o $(SERVER) $(OBJECTS_SVC) $(LDLIBS) $(LIBS)