Question

我正在尝试编译一段创建TNonblockingServer的代码，但我得到以下编译错误。知道什么是错的吗？

something_server.cpp:(.text+0x1ad): undefined reference to `apache::thrift::server::TNonblockingServer::serve()'
something_server.cpp:(.text+0x1c1): undefined reference to `apache::thrift::server::TNonblockingServer::~TNonblockingServer()'
something_server.cpp:(.text+0x280): undefined reference to `apache::thrift::server::TNonblockingServer::~TNonblockingServer()'

我在安装thrift时执行了此处概述的步骤。 http://thrift.apache.org/docs/install/os_x/

这是我的makefile

GEN_SRC := Something.cpp something_constants.cpp something_types.cpp
GEN_OBJ := $(patsubst %.cpp,%.o, $(GEN_SRC))

THRIFT_DIR := /usr/local/include/thrift
BOOST_DIR := /usr/local/include

INC := -I$(THRIFT_DIR) -I$(BOOST_DIR)

.PHONY: all clean

all: something_server something_client

%.o: %.cpp 
    $(CXX) -Wall -DHAVE_INTTYPES_H -DHAVE_NETINET_IN_H $(INC) -c $< -o $@ 

something_server: something_server.o $(GEN_OBJ)
    $(CXX) $^ -o $@ -L/usr/local/lib -lthrift 

something_client: something_client.o $(GEN_OBJ)
    $(CXX) $^ -o $@ -L/usr/local/lib -lthrift 

clean: 
    $(RM) *.o something_server something_client

Answer 1

正如Dmitry所指出的，如果我们将-lthriftnb添加到编译命令中，它就可以解决问题。这些缺少的引用可以在libthriftnb.so中找到。这个文件引用了libevent。所以我必须包含-levent来编译命令。没有-levent链接器会生成多个错误消息。一些消息如下 -

/usr/local/lib/libthriftnb.so: undefined reference to `event_set'
/usr/local/lib/libthriftnb.so: undefined reference to `evbuffer_new'
/usr/local/lib/libthriftnb.so: undefined reference to `evhttp_free'
.
.
.
.
/usr/local/lib/libthriftnb.so: undefined reference to `event_del'

Apache thrift undefined对apache :: thrift :: server :: TNonblockingServer的引用

1 个答案: