0

我是 C++ 编程的新手。我从 Qt 5.0.1 开始。我需要使用来自：https ://code.google.com/p/tufao/ 的 WebSockets，但我没有安装 MinGW，所以我用谷歌搜索我可以创建 Qt 库项目，包含这些源文件并构建静态库。所以我做到了：

QT       += network
QT       -= gui
TARGET = tufao
TEMPLATE = lib
CONFIG += staticlib
INCLUDEPATH = src src/priv
SOURCES += \
    src/websocket.cpp \
    src/url.cpp \
    src/simplesessionstore.cpp \
    src/sessionstore.cpp \
    src/querystring.cpp \
    src/httpserverresponse.cpp \
    src/httpserverrequestrouter.cpp \
    src/httpserverrequest.cpp \
    src/httpserver.cpp \
    src/httppluginserver.cpp \
    src/httpfileserver.cpp \
    src/headers.cpp \
    src/abstractmessagesocket.cpp \
    src/abstracthttpserverrequesthandler.cpp \
    src/priv/tcpserverwrapper.cpp \
    src/priv/rfc1123.cpp \
    src/priv/rfc1036.cpp \
    src/priv/reasonphrase.cpp \
    src/priv/http_parser.c \
    src/priv/asctime.cpp

HEADERS += \
    src/websocket.h \
    src/url.h \
    src/tufao_global.h \
    src/simplesessionstore.h \
    src/sessionstore.h \
    src/sessionsettings.h \
    src/session.h \
    src/querystring.h \
    src/ibytearray.h \
    src/httpsserver.h \
    src/httpserverresponse.h \
    src/httpserverrequestrouter.h \
    src/httpserverrequest.h \
    src/httppluginserver.h \
    src/httpfileserver.h \
    src/headers.h \
    src/abstractmessagesocket.h \
    src/abstracthttpserverrequesthandlerfactory.h \
    src/abstracthttpserverrequesthandler.h \
    src/priv/websocket.h \
    src/priv/url.h \
    src/priv/tcpserverwrapper.h \
    src/priv/simplesessionstore.h \
    src/priv/sessionstore.h \
    src/priv/rfc1123.h \
    src/priv/rfc1036.h \
    src/priv/reasonphrase.h \
    src/priv/httpsserver.h \
    src/priv/httpserverresponse.h \
    src/priv/httpserverrequestrouter.h \
    src/priv/httpserverrequest.h \
    src/priv/httpserver.h \
    src/priv/httppluginserver.h \
    src/priv/httpfileserver.h \
    src/priv/http_parser.h \
    src/priv/cryptography.h \
    src/priv/asctime.h
unix:!symbian {
    maemo5 {
        target.path = /opt/usr/lib
    } else {
        target.path = /usr/lib
    }
    INSTALLS += target
}

构建后，我得到libtufao.a. 所以下一步是测试它。我创建了简单的测试项目并通过单击添加库-> 外部-> 静态添加了这个库。打开对话框只能打开.lib文件，所以我libtufao.a改为libtufao.lib：

QT       += core gui network
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets   
TARGET = sockettest
TEMPLATE = app
SOURCES += main.cpp\
        mainwindow.cpp
HEADERS  += mainwindow.h \
FORMS    += mainwindow.ui
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../../components/tufao-build-Desktop_Qt_5_0_1_MinGW_32bit-Release/release/ -llibtufao
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../../components/tufao-build-Desktop_Qt_5_0_1_MinGW_32bit-Release/debug/ -llibtufao

INCLUDEPATH += $$PWD/../../components/tufao/src
DEPENDPATH += $$PWD/../../components/tufao/src

win32:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/../../components/tufao-build-Desktop_Qt_5_0_1_MinGW_32bit-Release/release/libtufao.lib
else:win32:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/../../components/tufao-build-Desktop_Qt_5_0_1_MinGW_32bit-Release/debug/libtufao.lib

但是当我尝试构建这个测试项目时，我得到了编译器错误：

未定义的引用` imp __ZN5Tufao9WebSocket13connectToHostERK12QHostAddresstRK10QByteArrayRKNS_7HeadersE' collect2.exe:-1:

错误：ld 返回 1 个退出状态

谁能帮我？

问候

编辑： 通过将所有源添加到我的 dest 项目和.pro我添加的文件中解决了问题DEFINES += TUFAO_LIBRARY。现在一切都编译好了。

4

1 回答 1

0

将外部库添加到 Qt Creator 项目中

链接器找不到 的实现WebSocket::connectToHost，因此您需要链接具有该功能的库。

在您的 .pro 文件中，添加

LIBS += "path/to/lib/libname"

或者，如果它已经在您的库路径中，您可以将

LIBS += -lmylibname

所以我想对你来说，可能是

LIBS += -llibtufao

希望有帮助。

于 2013-02-22T18:38:15.363 回答