c++ - Ubuntu 将可执行文件识别为共享库，并且不会通过单击来运行它

Question

我第一次遇到这个问题是在我全新安装 lubuntu 17.04 时。我以前用过 Ubuntu，以前没有遇到过这个问题。

我编译了我的 qt 应用程序，我可以通过命令行发出“./”来执行它。但是，我无法通过单击文件管理器(PCManFM、Nautilus...)来执行它，两者都将其识别为共享库文件类型。

如何直接点击文件运行？

这是我通过文件管理器双击可执行文件时发生的情况:

构建日志:

11:20:05: Running steps for project APP_release...
11:20:05: Configuration unchanged, skipping qmake step.
11:20:05: Starting: "/usr/bin/make" 
/opt/Qt5.9.0/5.9/gcc_64/bin/uic ../APP_release/mainwindow.ui -o ui_mainwindow.h
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -fPIC -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../APP_release -I. -I/opt/Qt5.9.0/5.9/gcc_64/include -I/opt/Qt5.9.0/5.9/gcc_64/include/QtWidgets -I/opt/Qt5.9.0/5.9/gcc_64/include/QtGui -I/opt/Qt5.9.0/5.9/gcc_64/include/QtCore -I. -isystem /usr/include/libdrm -I. -I/opt/Qt5.9.0/5.9/gcc_64/mkspecs/linux-g++ -o main.o ../APP_release/main.cpp
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -fPIC -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../APP_release -I. -I/opt/Qt5.9.0/5.9/gcc_64/include -I/opt/Qt5.9.0/5.9/gcc_64/include/QtWidgets -I/opt/Qt5.9.0/5.9/gcc_64/include/QtGui -I/opt/Qt5.9.0/5.9/gcc_64/include/QtCore -I. -isystem /usr/include/libdrm -I. -I/opt/Qt5.9.0/5.9/gcc_64/mkspecs/linux-g++ -o mainwindow.o ../APP_release/mainwindow.cpp
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -fPIC -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../APP_release -I. -I/opt/Qt5.9.0/5.9/gcc_64/include -I/opt/Qt5.9.0/5.9/gcc_64/include/QtWidgets -I/opt/Qt5.9.0/5.9/gcc_64/include/QtGui -I/opt/Qt5.9.0/5.9/gcc_64/include/QtCore -I. -isystem /usr/include/libdrm -I. -I/opt/Qt5.9.0/5.9/gcc_64/mkspecs/linux-g++ -o foldercompressor.o ../APP_release/foldercompressor.cpp
g++ -pipe -O2 -Wall -W -dM -E -o moc_predefs.h /opt/Qt5.9.0/5.9/gcc_64/mkspecs/features/data/dummy.cpp
/opt/Qt5.9.0/5.9/gcc_64/bin/moc -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB --include ./moc_predefs.h -I/opt/Qt5.9.0/5.9/gcc_64/mkspecs/linux-g++ -I/home/spectrum/trunk/APP_release/APP_release -I/opt/Qt5.9.0/5.9/gcc_64/include -I/opt/Qt5.9.0/5.9/gcc_64/include/QtWidgets -I/opt/Qt5.9.0/5.9/gcc_64/include/QtGui -I/opt/Qt5.9.0/5.9/gcc_64/include/QtCore -I. -I/usr/include/c++/6 -I/usr/include/x86_64-linux-gnu/c++/6 -I/usr/include/c++/6/backward -I/usr/lib/gcc/x86_64-linux-gnu/6/include -I/usr/local/include -I/usr/lib/gcc/x86_64-linux-gnu/6/include-fixed -I/usr/include/x86_64-linux-gnu -I/usr/include ../APP_release/mainwindow.h -o moc_mainwindow.cpp
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -fPIC -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../APP_release -I. -I/opt/Qt5.9.0/5.9/gcc_64/include -I/opt/Qt5.9.0/5.9/gcc_64/include/QtWidgets -I/opt/Qt5.9.0/5.9/gcc_64/include/QtGui -I/opt/Qt5.9.0/5.9/gcc_64/include/QtCore -I. -isystem /usr/include/libdrm -I. -I/opt/Qt5.9.0/5.9/gcc_64/mkspecs/linux-g++ -o moc_mainwindow.o moc_mainwindow.cpp
/opt/Qt5.9.0/5.9/gcc_64/bin/moc -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB --include ./moc_predefs.h -I/opt/Qt5.9.0/5.9/gcc_64/mkspecs/linux-g++ -I/home/spectrum/trunk/APP_release/APP_release -I/opt/Qt5.9.0/5.9/gcc_64/include -I/opt/Qt5.9.0/5.9/gcc_64/include/QtWidgets -I/opt/Qt5.9.0/5.9/gcc_64/include/QtGui -I/opt/Qt5.9.0/5.9/gcc_64/include/QtCore -I. -I/usr/include/c++/6 -I/usr/include/x86_64-linux-gnu/c++/6 -I/usr/include/c++/6/backward -I/usr/lib/gcc/x86_64-linux-gnu/6/include -I/usr/local/include -I/usr/lib/gcc/x86_64-linux-gnu/6/include-fixed -I/usr/include/x86_64-linux-gnu -I/usr/include ../APP_release/foldercompressor.h -o moc_foldercompressor.cpp
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -fPIC -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../APP_release -I. -I/opt/Qt5.9.0/5.9/gcc_64/include -I/opt/Qt5.9.0/5.9/gcc_64/include/QtWidgets -I/opt/Qt5.9.0/5.9/gcc_64/include/QtGui -I/opt/Qt5.9.0/5.9/gcc_64/include/QtCore -I. -isystem /usr/include/libdrm -I. -I/opt/Qt5.9.0/5.9/gcc_64/mkspecs/linux-g++ -o moc_foldercompressor.o moc_foldercompressor.cpp
g++ -Wl,-O1 -Wl,-rpath,/opt/Qt5.9.0/5.9/gcc_64/lib -o APP_release main.o mainwindow.o foldercompressor.o moc_mainwindow.o moc_foldercompressor.o   -L/opt/Qt5.9.0/5.9/gcc_64/lib -lQt5Widgets -lQt5Gui -lQt5Core -lGL -lpthread 
11:20:10: The process "/usr/bin/make" exited normally.
11:20:10: Elapsed time: 00:05

Answer 1

我已通过在 QT 中的项目的 .pro 文件中添加以下行来修复此行为:

QMAKE_LFLAGS += -no-pie

该行为的发生是因为较新的 ubuntu 发行版设置了 GCC 默认链接标志 -pie，它在二进制文件中将 e_type 标记为 ET_DYN。因此，操作系统识别为共享库。

要解决这个问题，可能需要在编译器选项上添加 -no-pie。