为什么我收到此错误消息：“未定义引用`PerformChat（char *，char *，char *，char *，char *）'”

Question

我正在尝试编译使用ChatScript库的程序。 这是我在名为main.cpp的文件中的代码：

#include <iostream>

#include "common.h"

using namespace std;


char* output2;
unsigned int InitSystem(int argc,char* argv[]);
void InitStandalone();

int main(int argc, char * argv[])
{
char * userID;
userID="one";


PerformChat("one",NULL,"hi",NULL,output2);

cout<<output2;

    return 0;
}

我试图包含所有的ChatScript库，我也知道performChat函数在mainSystem.h文件中，我也包含它（你可以在第218行看到它： https ： //github.com/bwilcox-1234/ ChatScript / blob / master / SRC / mainSystem.h ）。

但在尝试使用此命令编译我的程序之后：

g++ -std=c++11 main.cpp constructCode.cpp csocket.cpp dictionarySystem.cpp english.cpp evserver.cpp factSystem.cpp functionExecute.cpp infer.cpp jsmn.cpp json.cpp markSystem.cpp mongodb.cpp mysql.cpp os.cpp outputSystem.cpp patternSystem.cpp postgres.cpp privatesrc.cpp scriptCompile.cpp spellcheck.cpp systemVariables.cpp tagger.cpp testing.cpp textUtilities.cpp tokenSystem.cpp topicSystem.cpp userCache.cpp userSystem.cpp variableSystem.cpp -o myprogram

我收到了很多这样的错误!!

                                             ^
/tmp/ccuVtYkV.o: In function `main':
main.cpp:(.text+0x36): undefined reference to `PerformChat(char*, char*, char*, char*, char*)'
/tmp/cc6Mhc8u.o: In function `TestIf(char*, FunctionResult&, char*)':
constructCode.cpp:(.text+0x5b): undefined reference to `trace'
constructCode.cpp:(.text+0x203): undefined reference to `trace'
constructCode.cpp:(.text+0x820): undefined reference to `trace'
constructCode.cpp:(.text+0x9d5): undefined reference to `trace'
constructCode.cpp:(.text+0xb62): undefined reference to `trace'
/tmp/cc6Mhc8u.o:constructCode.cpp:(.text+0xbab): more undefined references to `trace' follow
/tmp/cc6Mhc8u.o: In function `HandleIf(char*, char*, FunctionResult&)':
constructCode.cpp:(.text+0xd15): undefined reference to `always'
constructCode.cpp:(.text+0xe75): undefined reference to `trace'
constructCode.cpp:(.text+0x1086): undefined reference to `trace'
constructCode.cpp:(.text+0x11c4): undefined reference to `trace'
/tmp/cc6Mhc8u.o: In function `HandleLoop(char*, char*, FunctionResult&)':
constructCode.cpp:(.text+0x13ab): undefined reference to `trace'
constructCode.cpp:(.text+0x14a7): undefined reference to `trace'
/tmp/cc6Mhc8u.o:constructCode.cpp:(.text+0x298c): more undefined references to `trace' follow
/tmp/ccWaC4y6.o: In function `fillAddr(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned short, sockaddr_in&)':
csocket.cpp:(.text+0x2320): undefined reference to `hostname'
/tmp/ccWaC4y6.o: In function `Client':
csocket.cpp:(.text+0x37bf): undefined reference to `always'
csocket.cpp:(.text+0x3840): undefined reference to `port'
csocket.cpp:(.text+0x389d): undefined reference to `port'
csocket.cpp:(.text+0x3af1): undefined reference to `port'
csocket.cpp:(.text+0x3b4e): undefined reference to `port'
/tmp/ccWaC4y6.o: In function `RegressLoad(void*)':
csocket.cpp:(.text+0x3f96): undefined reference to `revertBuffer'
csocket.cpp:(.text+0x3fcb): undefined reference to `revertBuffer'
csocket.cpp:(.text+0x401c): undefined reference to `revertBuffer'
csocket.cpp:(.text+0x40b9): undefined reference to `port'
/tmp/ccWaC4y6.o: In function `LogChat(long, char*, char*, char*, int, char*, char*)':
csocket.cpp:(.text+0x4559): undefined reference to `version'
/tmp/ccWaC4y6.o: In function `LaunchClient(void*)':
csocket.cpp:(.text+0x4821): undefined reference to `pthread_create'
/tmp/ccWaC4y6.o: In function `InternetServer()':
csocket.cpp:(.text+0x4a01): undefined reference to `pthread_create'
csocket.cpp:(.text+0x4a1f): undefined reference to `pthread_create'
csocket.cpp:(.text+0x4a38): undefined reference to `pthread_join'
/tmp/ccWaC4y6.o: In function `ServerTransferDataToClient()':
csocket.cpp:(.text+0x4a8d): undefined reference to `ourMainOutputBuffer'
/tmp/ccWaC4y6.o: In function `HandleTCPClient(void*)':
csocket.cpp:(.text+0x5454): undefined reference to `outputLength'
/tmp/ccWaC4y6.o: In function `GrabPort()':
csocket.cpp:(.text+0x5777): undefined reference to `interfaceKind[abi:cxx11]'
csocket.cpp:(.text+0x5799): undefined reference to `port'
csocket.cpp:(.text+0x57c7): undefined reference to `port'
csocket.cpp:(.text+0x57d6): undefined reference to `interfaceKind[abi:cxx11]'
/tmp/ccWaC4y6.o: In function `MainChatbotServer()':
csocket.cpp:(.text+0x5940): undefined reference to `quitting'
csocket.cpp:(.text+0x5a7d): undefined reference to `ourMainInputBuffer'
csocket.cpp:(.text+0x5a83): undefined reference to `ourMainInputBuffer'
csocket.cpp:(.text+0x5a8e): undefined reference to `ourMainInputBuffer'
csocket.cpp:(.text+0x5aa1): undefined reference to `ourMainInputBuffer'
csocket.cpp:(.text+0x5afa): undefined reference to `ourMainInputBuffer'
csocket.cpp:(.text+0x5b1b): undefined reference to `ourMainOutputBuffer'
csocket.cpp:(.text+0x5b3b): undefined reference to `ourMainInputBuffer'
csocket.cpp:(.text+0x5b43): undefined reference to `PerformChat(char*, char*, char*, char*, char*)'
csocket.cpp:(.text+0x5b5b): undefined reference to `Restart()'
csocket.cpp:(.text+0x5bb0): undefined reference to `ourMainInputBuffer'
csocket.cpp:(.text+0x5bd6): undefined reference to `ourMainOutputBuffer'
/tmp/ccwtMWsK.o: In function `ClearWhereInSentence()':
dictionarySystem.cpp:(.text+0x35d): undefined reference to `documentMode'
/tmp/ccwtMWsK.o: In function `AllocateWhereInSentence(WORDENTRY*)':
dictionarySystem.cpp:(.text+0x5ce): undefined reference to `documentMode'
/tmp/ccwtMWsK.o: In function `UseDictionaryFile(char*)':
dictionarySystem.cpp:(.text+0xefc): undefined reference to `language'
dictionarySystem.cpp:(.text+0xf1f): undefined reference to `language'
dictionarySystem.cpp:(.text+0xf3a): undefined reference to `language'
/tmp/ccwtMWsK.o: In function `ReadForeignPosTags(char*)':
dictionarySystem.cpp:(.text+0x10a0): undefined reference to `readBuffer'
dictionarySystem.cpp:(.text+0x10d9): undefined reference to `readBuffer'
/tmp/ccwtMWsK.o: In function `BuildDictionary(char*)':
dictionarySystem.cpp:(.text+0x1402): undefined reference to `language'
dictionarySystem.cpp:(.text+0x157f): undefined reference to `language'
dictionarySystem.cpp:(.text+0x165c): undefined reference to `users'
dictionarySystem.cpp:(.text+0x16ba): undefined reference to `CreateSystem()'
/tmp/ccwtMWsK.o: In function `StoreWord(char*, unsigned long long)':
dictionarySystem.cpp:(.text+0x2915): undefined reference to `server'
/tmp/ccwtMWsK.o: In function `ShowStats(bool)':
dictionarySystem.cpp:(.text+0x31bb): undefined reference to `volleyStartTime'
dictionarySystem.cpp:(.text+0x31c8): undefined reference to `inputSentenceCount'
dictionarySystem.cpp:(.text+0x31d2): undefined reference to `inputSentenceCount'
dictionarySystem.cpp:(.text+0x322b): undefined reference to `tokenCount'
dictionarySystem.cpp:(.text+0x3266): undefined reference to `tokenCount'
dictionarySystem.cpp:(.text+0x326c): undefined reference to `inputSentenceCount'

Answer 1

使用g++ -0 test test.cpp ，您可以告诉编译器编译和链接程序，但是您错过了告诉编译器在哪里可以找到用于链接的必要库。

如果你编写g++ -o test.o -c test.cpp ，那么编译器只会编译而不是链接，你应该得到一个有效的test.o目标文件。

然后，您可以将所有内容链接在一起 为此，从GIT存储库中加载二进制文件; 我想这是LinuxChatScript64文件。 比方说，将文件放在.cpp -file所在的同一目录中。

然后，链接：

g++ -o myprogram test.o LinuxChatScript64

希望它有效。 祝好运！

Answer 2

我可以用这个命令编译我的程序：

g++ -std=c++11 main.cpp constructCode.cpp duktape/duktape.cpp evserver.cpp csocket.cpp cs_ev.c dictionarySystem.cpp englishTagger.cpp factSystem.cpp json.cpp functionExecute.cpp english.cpp infer.cpp javascript.cpp jsmn.cpp markSystem.cpp mysql.cpp mongodb.cpp os.cpp outputSystem.cpp patternSystem.cpp postgres.cpp privatesrc.cpp scriptCompile.cpp spellcheck.cpp secure.cpp systemVariables.cpp tagger.cpp testing.cpp textUtilities.cpp tokenSystem.cpp topicSystem.cpp userCache.cpp userSystem.cpp variableSystem.cpp mainSystem.cpp -o myapp -L/usr/lib64 -lrt -lcurl -pthread -Ievserver -DDISCARDSERVER=1 -DDISCARDPOSTGRES=1 -DDISCARDMONGO=1 -DDISCARDMYSQL=1 -DEVSERVER=1 -DEVSERVER_FORK=1

我找到了makefile中的选项，并在我的命令末尾添加了它们，你可以看到（在-o myapp之后）

Answer 3

您不能只使用标题（.h）文件进行编译。 头文件提供签名，但实现在对象（.o）文件中，需要由编译器链接。