我正在尝试使用MinGW编译器构建一个简单的QT程序。我最终希望将我的Linux开发的QT / C ++程序移植到Windows中。我从他们的站点下载了QT_4.3.5(这是我的程序使用的)和MinGW。我相信这是一个32位编译器。我正在使用“ cmd”来构建程序,类似于在Linux中构建程序的方式。我的程序如下所示。
#include <QApplication>
#include <QPushButton>
#include <cstdio>
int main(int argc, char *argv[]) //This should work with QT4?
{
printf("Hello\n");
QApplication app(argc,argv);
QPushButton hello ("Hello world!");
hello.resize(100,30);
hello.show();
return app.exec();
}
我能够在Linux 5.7中成功构建并运行该程序。因此,在Windows中,我创建了一个“ main.cpp”文件,并使用qmake来创建.pro文件和Makefile。我正在使用QT4.3.5中的qmake。我使用了“ qmake -project”和qmake。它在Windows中成功构建了.pro文件和Makefile。但是当我运行make时,它给了我一个“无法识别的命令行选项'-Wl'”
我相信qmake版本和minGW可能存在兼容性问题。 Makefile中的相关行是
LFLAGS = -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -Wl,-s -mthreads -Wl -Wl,-subsystem,windows
然后我尝试删除-Wl并给出错误,提示找不到“ -enable-auto-import”,“-enable-runtime-pseudo-reloc”,“-s”,“-subsystem,windos”没有这样的文件或目录。
1)我应该如何调试此问题?
2)我应该尝试使用minGW64版本吗?
------------------------------------编辑---------- ---------------------------
我决定要测试更新版本的QT。因此,我已经安装了QT 5.6.3,并且还使用了QT5.6.3附带的minGW4.9。我还亲自创建了QT项目文件(.pro)。
TEMPLATE = app
TARGET = QT_Simple
INCLUDEPATH += .
# Input
SOURCES += main.cpp
LIBS += -L"C:\Qt\Qt5.6.3\5.6.3\mingw49_32\lib" \
-L"C:\Qt\Qt5.6.3\5.6.3\mingw49_32\lib" \
-lmingw32 \
-lqtmain \
-lQt5Core \
-lQt5Gui \
然后我运行“ qmake”来创建Makefile。这是相关的部分。它看起来与以前的qmake没什么不同
####### Compiler, tools and options
CC = gcc
CXX = g++
DEFINES = -DUNICODE -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -
DQT_NEEDS_QMAIN
CFLAGS = -pipe -fno-keep-inline-dllexport -O2 -Wall -Wextra
$(DEFINES)
CXXFLAGS = -pipe -fno-keep-inline-dllexport -O2 -std=gnu++0x -frtti -
Wall -Wextra -fexceptions -mthreads $(DEFINES)
INCPATH = -I. -I. -IC:/Qt/Qt5.6.3/5.6.3/mingw49_32/include -
IC:/Qt/Qt5.6.3/5.6.3/mingw49_32/include/QtGui -
IC:/Qt/Qt5.6.3/5.6.3/mingw49_32/include/QtANGLE -
IC:/Qt/Qt5.6.3/5.6.3/mingw49_32/include/QtCore -Irelease -
IC:/Qt/Qt5.6.3/5.6.3/mingw49_32/mkspecs/win32-g++
LINKER = g++
LFLAGS = -Wl,-s -Wl,-subsystem,windows -mthreads
LIBS = -LC:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib -
LC:/utils/my_sql/my_sql/lib -LC:/utils/postgresql/pgsql/lib -
LC:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib -lmingw32
C:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib/libqtmain.a -lshell32
C:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib/libQt5Core.a
C:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib/libQt5Gui.a
C:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib/libQt5Core.a
QMAKE = C:/Qt/Qt5.6.3/5.6.3/mingw49_32/bin/qmake.exe
IDC = idc
IDL = midl
...........
我知道这些库文件位于上述目录中(例如libQt5Core.a,libQt5Gui.a等)。但这给了我一个未定义的参考错误。我相信链接器找不到文件。
C:\Users\Administrator\Documents\QT_Test\QT_Simple>mingw32-make
mingw32-make -f Makefile.Release
mingw32-make[1]: Entering directory 'C:/Users/Administrator/Documents/QT_Test/QT_Simple'
g++ -Wl,-s -Wl,-subsystem,windows -mthreads -o release/QT_Simple.exe release/main.o -LC:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib
-LC:/utils/my_sql/my_sql/lib -LC:/utils/postgresql/pgsql/lib -LC:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib -lmingw32
C:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib/libqtmain.a -lshell32 C:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib/libQt5Core.a
C:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib/libQt5Gui.a C:/Qt/Qt5.6.3/5.6.3/mingw49_32/lib/libQt5Core.a
release/main.o:main.cpp:(.text+0x4d): undefined reference to `_imp___ZN12QApplicationC1ERiPPci'
release/main.o:main.cpp:(.text+0x7f): undefined reference to `_imp___ZN11QPushButtonC1ERK7QStringP7QWidget'
release/main.o:main.cpp:(.text+0xb0): undefined reference to `_imp___ZN7QWidget6resizeERK5QSize'
release/main.o:main.cpp:(.text+0xbc): undefined reference to `_imp___ZN7QWidget4showEv'
release/main.o:main.cpp:(.text+0xc2): undefined reference to `_imp___ZN12QApplication4execEv'
release/main.o:main.cpp:(.text+0xcd): undefined reference to `_imp___ZN11QPushButtonD1Ev'
release/main.o:main.cpp:(.text+0xd6): undefined reference to `_imp___ZN12QApplicationD1Ev'
release/main.o:main.cpp:(.text+0x120): undefined reference to `_imp___ZN12QApplicationD1Ev'
release/main.o:main.cpp:(.text+0x155): undefined reference to `_imp___ZN11QPushButtonD1Ev'
C:/Qt/Qt5.6.3/Tools/mingw492_32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bin/ld.exe: release/main.o:
bad reloc address 0x20 in section `.eh_frame'
C:/Qt/Qt5.6.3/Tools/mingw492_32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../.
./i686-w64-mingw32/bin/ld.exe: final link failed: Invalid operation
collect2.exe: error: ld returned 1 exit status
Makefile.Release:61: recipe for target 'release/QT_Simple.exe' failed
mingw32-make[1]: *** [release/QT_Simple.exe] Error 1
mingw32-make[1]: Leaving directory 'C:/Users/Administrator/Documents/QT_Test/QT_Simple'
makefile:34: recipe for target 'release' failed
mingw32-make: *** [release] Error 2
我不确定为什么找不到引用。是否与不使用DLL文件(libQt5Core.dll等)有关?我是否正确链接?
答案 0 :(得分:0)
问题出在我的QT项目文件(.pro)中。我添加了以下行,它编译并成功运行。
QT += core gui widgets
最终的QT_simple.pro文件如下所示
QT += core gui widgets
TEMPLATE = app
TARGET = QT_Simple
INCLUDEPATH += .
# Input
SOURCES += main.cpp
LIBS += -L"C:\Qt\Qt5.6.3\5.6.3\mingw49_32\lib" \
-L"C:\Qt\Qt5.6.3\5.6.3\mingw49_32\lib" \
-lmingw32 \
-lqtmain \
-lQt5Core \
-lQt5Gui \
感谢您的帮助!