c++ - 对 `_imp___ZN10HTTPClient5abortEv' 和其他的 undefined reference

Question

我正在将一个巨大的项目从 Qt 4.x 迁移到 5，我快完成了，但我遇到了无法定位的错误，我认为这与某些库的链接有关，但我在这里有些迷路。我希望有人能对此事有所了解。

错误:

  ./release\addeditaton.o:addeditaton.cpp:(.text+0x6ac2): undefined reference to `_imp___ZN10HTTPClient5abortEv'
    ./release\addeditaton.o:addeditaton.cpp:(.text+0x98c5): undefined reference to `_imp___ZN10HTTPClient3getE7QStringbb'
    ./release\addeditaton.o:addeditaton.cpp:(.text+0x9f88): undefined reference to `_imp___ZN10HTTPClient3getE7QStringbb'
    ./release\addeditaton.o:addeditaton.cpp:(.text+0xa7a8): undefined reference to `_imp___ZN10HTTPClient3getE7QStringbb'
    ./release\addeditaton.o:addeditaton.cpp:(.text+0xa921): undefined reference to `_imp___ZN10RestClientC2E7QStringibS0_S0_S0_S0_'
    ./release\addeditaton.o:addeditaton.cpp:(.text+0xc91b): undefined reference to `_imp___ZN10HTTPClient3getE7QStringbb'
    ./release\addeditaton.o:addeditaton.cpp:(.text+0xcaa3): undefined reference to `_imp___ZN10RestClientC2E7QStringibS0_S0_S0_S0_'
    ./release\addeditaton.o:addeditaton.cpp:(.text+0xe49d): undefined reference to `_imp___ZN10HTTPClient4postE7QStringS0_b'
    ./release\addeditaton.o:addeditaton.cpp:(.text+0xfc55): undefined reference to `_imp___ZN10HTTPClient4postE7QStringS0_b'
    Makefile.Release:922: recipe for target '..\Release\Swibz.exe' failed
    c:/mingw/bin/../lib/gcc/mingw32/4.8.1/../../../../mingw32/bin/ld.exe: ./release\addeditaton.o: bad reloc address 0x20 in section `.text$_ZN10QByteArrayD1Ev[__ZN10QByteArrayD1Ev]'

项目文件:

# ----------------------------------------------------
# This file is generated by the Qt Visual Studio Add-in.
# ------------------------------------------------------

TEMPLATE = app
TARGET = Swibz
include(Swibz.pri)
DESTDIR = ../Release
QT += widgets network xml webkit webkitwidgets opengl #core gui are by default
CONFIG += release
DEFINES += _WINDOWS QT_LARGEFILE_SUPPORT QT_XML_LIB QT_OPENGL_LIB QT_NETWORK_LIB QT_DLL QWT_DLL JSON_LIB_LIB
INCLUDEPATH += ../../../SprintLib \
    ./GeneratedFiles \
    ./GeneratedFiles/Release \
    . \
    #./../../Qwt/qwt-5.2.0/src \
    ../qwt/src \
    #../../../QENC/QENC \
    ../qenc \
   # ../../../zlib-1.2.5 \
    ../zlib-1.2.5 \
    #../../../serial/qextserialport-1.2win-alpha \
    ../qextserialport-1.2win-alpha \
   # ../../../qxmpp-0.3.0/src \
    ../qxmpp/build-qxmpp-Qt_4_8_5-Debug/src \
    #../../../JSON \
    ../json/JSON \
   # ../../../QtSerialPort/qtserialport/include
    ../QtSerialPort/qtserialport/include
LIBS += -L"../../../SprintLib/release" \
    -L"../../../QENC/release" \
    -L"../../../zlib-1.2.5/contrib/vstudio/vc9/x86/ZlibDllRelease" \
    -L"../../../serial/qextserialport-1.2win-alpha/Release" \
    -L"../../../qxmpp-0.3.0/lib" \
    -L"../../../JSON/Release" \
    -L"../../../QtSerialPort/qtserialport/src/serialport/release" \
    -lopengl32 \
    -lglu32 \
    -lgdi32 \
    -luser32 \
    #-lHDP \
    -L"./libHDP.a" \
    #-l../../Qwt/qwt-5.2.0/lib/debug/qwt5 \
    #-lqenc \
    #-lzlibwapi \
    -L"./zlib1.dll" \
    #-lqextserialport \
    -lsetupapi \
    #-lqxmpp \
    -L"./libqxmpp.a" \
    #-ljson_lib \
    #-lSerialPort1
    -L"./libqextserialportd.a" \
#DEPENDPATH += .
#MOC_DIR += ./GeneratedFiles/release
#OBJECTS_DIR += release
#UI_DIR += ./GeneratedFiles
#eRCC_DIR += ./GeneratedFiles
#win32:RC_FILE = Swibz.rc

TRANSLATIONS = ln_en.ts
TRANSLATIONS = ln_lv.ts
TRANSLATIONS = ln_lt.ts
TRANSLATIONS = ln_es.ts

CODECFORTR     = UTF-8

包括 addeditaton.cpp(如果需要其余代码，请告知，它们是 930 行，我认为它们与问题无关(

#include "addeditaton.h"
#include "atonwidget.h"
#include "atoninfowidget.h"
#include "messagebox.h"

#include <QtDebug>
#include <QFileDialog>

Answer 1

./release\addeditaton.o:addeditaton.cpp:(.text+0x6ac2): undefined reference to `_imp___ZN10HTTPClient5abortEv'

这样的行通常至少意味着以下任一问题:

• 您没有安装相应的库

• 您没有安装带有您依赖的符号的正确版本。

• 您的链接选项设置不正确。

在这种情况下，投诉是关于 http 客户端库的，所以让我们先检查您的项目文件。您在开始时正确使用了 -L 和 -l 选项，但在最后却没有正确使用，所以让我们澄清一下它们的含义:

-L 表示库的路径。

-l 表示库名或库的绝对路径。

现在，让我们看看您在问题所在的末尾写了什么:

-L"./libHDP.a" \
#-l../../Qwt/qwt-5.2.0/lib/debug/qwt5 \
#-lqenc \
#-lzlibwapi \
-L"./zlib1.dll" \
#-lqextserialport \
-lsetupapi \
#-lqxmpp \
-L"./libqxmpp.a" \
#-ljson_lib \
#-lSerialPort1
-L"./libqextserialportd.a" \

因此，您应该将其替换为以下内容:

-lHDP
#-l../../Qwt/qwt-5.2.0/lib/debug/qwt5 \
#-lqenc \
#-lzlibwapi \
-lzlib1 \
#-lqextserialport \
-lsetupapi \
#-lqxmpp \
-lqxmpp.a \
#-ljson_lib \
#-lSerialPort1 \
-lqextserialportd

或者，您也可以使用上面提到的 -l 选项指定静态库的绝对路径。

请注意，您不应该在项目中混淆诸如 QtSerialPort 和 QextSerialPort 之类的东西。最好使用 QtSerialPort。