问题5.1中缺少libgcc_s_sjlj-1.dll

Question

我的程序无法启动，抱怨需要libgcc_s_sjlj-1.dll。但是，Qt目录中不存在此文件。我做了一些搜索，发现应该添加-static-libgcc和-static-libstdc++。这是我的.pro文件：

QT       += core gui xml
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = mouseEventProcess
TEMPLATE = app

SOURCES += main.cpp
        mainwindow.cpp 
    fileOp.cpp 
    xmlpraser.cpp 
    pixmapOp.cpp 
    mathOp.cpp
HEADERS  += mainwindow.h 
    fileOp.h 
    xmlpraser.h 
    pixmapOp.h 
    mathOp.h
FORMS    += mainwindow.ui
#COMPILE LIBGCC_S_SJLJ-1.DLL AND LIBSTDC++-6.DLL INTO THE EXE FILE
win32{
QMAKE_LFLAGS += -static-libgcc
QMAKE_LFLAGS += -static-libstdc++
#BOOST LIBRARIES. CHANGE TO YOUR OWN.
INCLUDEPATH += D:/boost_1_51_0
#OPENCV LIBRARIES. CHANGE TO YOUR OWN.
INCLUDEPATH += D:/opencv2.4.4/include
INCLUDEPATH += D:/opencv2.4.4/release/install/include
LIBS += -LD:/opencv2.4.4/release/install/lib 
    -lopencv_core244 
    -lopencv_highgui244 
    -lopencv_imgproc244
    #-lopencv_features2d244 
    #-lopencv_calib3d244
}
unix{
#BOOST LIBRARIES. CHANGE TO YOUR OWN.
INCLUDEPATH += /home/panda/boost_1_51_0
#OPENCV LIBRARIES.IF YOU COMPILED AND INSALLED
#OPENCV FROM CMAKE & MINGW, JUST LEAVE IT BE,
#UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING.
INCLUDEPATH += /usr/local/include/opencv
INCLUDEPATH += /usr/local/include/opencv2
LIBS += -lopencv_core -lopencv_imgproc -lopencv_highgui
LIBS += -lopencv_ml -lopencv_video -lopencv_features2d
LIBS += -lopencv_calib3d -lopencv_objdetect -lopencv_contrib
LIBS += -lopencv_legacy -lopencv_flann
}

如果这样做有效，则不需要libgcc_s_sjlj-1.dll和libstdc++-6.dll。然而，在我将该程序放入.exe文件夹之前，它仍然需要libstdc++-6.dll。

所以我的问题是：在哪里可以获得libgcc_s_sjlj-1.dll，或者我的.pro文件中有问题吗？

Answer 1

啊，我真傻。你的"我的程序缺少libgcc_s_sjlj-1.dll，而不是libgcc_s_dw2-1.dll"应该敲响了警钟。

您使用错误的MinGW进行编译。MinGW有几种不同的异常处理程序：sjlj、dwarf、seh。小矮人只有32bin。当您安装了libgcc_s_dw2-1.dll时，这意味着您安装了仅32位的MinGW。

您必须使用用于编译Qt的相同MinGW来编译程序。sjlj-MinGW适用于32位和64位，所以我认为qt项目提供二进制包是有道理的，这些包是用sjlj-MinGW编译的。

有一些可用的MinGW包，您可以选择使用哪种异常处理机制。最好的选择可能是使用MinGW，它捆绑在Qt 5.1.1安装程序包中。