+こんにちは...私は初心者です...そしてc++に外部ライブラリを含める方法がわかりません。これはすごい難しいです。
TinyXMLを使いたい。だから私はこれを作りました:
example2.cpp
#include <iostream>
#include "tinyxml.h"
void write_app_settings_doc( )
{
TiXmlDocument doc;
TiXmlElement* msg;
TiXmlDeclaration* decl = new TiXmlDeclaration( "1.0", "", "" );
doc.LinkEndChild( decl );
TiXmlElement * root = new TiXmlElement( "MyApp" );
doc.LinkEndChild( root );
TiXmlComment * comment = new TiXmlComment();
comment->SetValue(" Settings for MyApp " );
root->LinkEndChild( comment );
TiXmlElement * msgs = new TiXmlElement( "Messages" );
root->LinkEndChild( msgs );
msg = new TiXmlElement( "Welcome" );
msg->LinkEndChild( new TiXmlText( "Welcome to MyApp" ));
msgs->LinkEndChild( msg );
msg = new TiXmlElement( "Farewell" );
msg->LinkEndChild( new TiXmlText( "Thank you for using MyApp" ));
msgs->LinkEndChild( msg );
TiXmlElement * windows = new TiXmlElement( "Windows" );
root->LinkEndChild( windows );
TiXmlElement * window;
window = new TiXmlElement( "Window" );
windows->LinkEndChild( window );
window->SetAttribute("name", "MainFrame");
window->SetAttribute("x", 5);
window->SetAttribute("y", 15);
window->SetAttribute("w", 400);
window->SetAttribute("h", 250);
TiXmlElement * cxn = new TiXmlElement( "Connection" );
root->LinkEndChild( cxn );
cxn->SetAttribute("ip", "192.168.0.1");
cxn->SetDoubleAttribute("timeout", 123.456); // floating point attrib
doc.SaveFile( "appsettings.xml" );
}
int main()
{
write_app_settings_doc( );
return 0;
}
単なるサンプルファイル。だから..私がこれをコンパイルするとき:
g ++ example2.cpp
次のエラーメッセージが表示されます:
/tmp/cc6npUsW.o: In function `write_app_settings_doc()':
example2.cpp:(.text+0x13): undefined reference to `TiXmlDocument::TiXmlDocument()'
example2.cpp:(.text+0x43): undefined reference to `TiXmlDeclaration::TiXmlDeclaration(char const*, char const*, char const*)'
example2.cpp:(.text+0x58): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x8f): undefined reference to `TiXmlElement::TiXmlElement(char const*)'
example2.cpp:(.text+0xa4): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x112): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x132): undefined reference to `TiXmlElement::TiXmlElement(char const*)'
example2.cpp:(.text+0x147): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x17e): undefined reference to `TiXmlElement::TiXmlElement(char const*)'
example2.cpp:(.text+0x1cb): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x1f4): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x214): undefined reference to `TiXmlElement::TiXmlElement(char const*)'
example2.cpp:(.text+0x261): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x28a): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x2aa): undefined reference to `TiXmlElement::TiXmlElement(char const*)'
example2.cpp:(.text+0x2bf): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x2f6): undefined reference to `TiXmlElement::TiXmlElement(char const*)'
example2.cpp:(.text+0x30b): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x33d): undefined reference to `TiXmlElement::SetAttribute(char const*, char const*)'
example2.cpp:(.text+0x358): undefined reference to `TiXmlElement::SetAttribute(char const*, int)'
example2.cpp:(.text+0x373): undefined reference to `TiXmlElement::SetAttribute(char const*, int)'
example2.cpp:(.text+0x38e): undefined reference to `TiXmlElement::SetAttribute(char const*, int)'
example2.cpp:(.text+0x3a9): undefined reference to `TiXmlElement::SetAttribute(char const*, int)'
example2.cpp:(.text+0x3c9): undefined reference to `TiXmlElement::TiXmlElement(char const*)'
example2.cpp:(.text+0x3de): undefined reference to `TiXmlNode::LinkEndChild(TiXmlNode*)'
example2.cpp:(.text+0x40d): undefined reference to `TiXmlElement::SetAttribute(char const*, char const*)'
example2.cpp:(.text+0x42a): undefined reference to `TiXmlElement::SetDoubleAttribute(char const*, double)'
example2.cpp:(.text+0x43d): undefined reference to `TiXmlDocument::SaveFile(char const*) const'
/tmp/cc6npUsW.o: In function `TiXmlString::operator=(char const*)':
example2.cpp:(.text._ZN11TiXmlStringaSEPKc[TiXmlString::operator=(char const*)]+0x23): undefined reference to `TiXmlString::assign(char const*, unsigned int)'
/tmp/cc6npUsW.o: In function `TiXmlString::quit()':
example2.cpp:(.text._ZN11TiXmlString4quitEv[TiXmlString::quit()]+0xc): undefined reference to `TiXmlString::nullrep_'
/tmp/cc6npUsW.o: In function `TiXmlComment::TiXmlComment()':
example2.cpp:(.text._ZN12TiXmlCommentC1Ev[TiXmlComment::TiXmlComment()]+0x15): undefined reference to `TiXmlNode::TiXmlNode(TiXmlNode::NodeType)'
example2.cpp:(.text._ZN12TiXmlCommentC1Ev[TiXmlComment::TiXmlComment()]+0x1e): undefined reference to `vtable for TiXmlComment'
/tmp/cc6npUsW.o: In function `TiXmlText::TiXmlText(char const*)':
example2.cpp:(.text._ZN9TiXmlTextC1EPKc[TiXmlText::TiXmlText(char const*)]+0x17): undefined reference to `TiXmlNode::TiXmlNode(TiXmlNode::NodeType)'
example2.cpp:(.text._ZN9TiXmlTextC1EPKc[TiXmlText::TiXmlText(char const*)]+0x20): undefined reference to `vtable for TiXmlText'
example2.cpp:(.text._ZN9TiXmlTextC1EPKc[TiXmlText::TiXmlText(char const*)]+0x4f): undefined reference to `TiXmlNode::~TiXmlNode()'
/tmp/cc6npUsW.o: In function `TiXmlDocument::~TiXmlDocument()':
example2.cpp:(.text._ZN13TiXmlDocumentD1Ev[TiXmlDocument::~TiXmlDocument()]+0xb): undefined reference to `vtable for TiXmlDocument'
example2.cpp:(.text._ZN13TiXmlDocumentD1Ev[TiXmlDocument::~TiXmlDocument()]+0x24): undefined reference to `TiXmlNode::~TiXmlNode()'
collect2: ld returned 1 exit status
私は主にJava開発者であり、外部ライブラリを使用するにはC++で多くの問題があります。リンクするタイミングがわかりません。いつ含めるか。-I /myincludepath/を作成する必要がある場合
これらのファイルは同じフォルダにあります:
example.cpp tinyxml.h tinyxml.cpp tinystr.h tinystr.cpp
誰かが私を助けることができますか?