C++ 如何使用 Qt 构建静态库和可执行文件？
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How do I build a static library and executable with Qt?
提问by chacham15
To simplify the situation, lets say that there are 2 files: core.cppand main.cpp.
为了简化情况，假设有 2 个文件：core.cpp和main.cpp.
core.cppcontains the functionality of the program and main.cppcontains the basic main()implementation.
core.cpp包含程序的功能和main.cpp基本main()实现。
I want Qt (using qmake and the .pro files) to
我想要 Qt（使用 qmake 和 .pro 文件）
- first build
core.aand then - use that and
main.cppto buildmain.exe.
- 首先构建
core.a然后 - 使用它并
main.cpp构建main.exe.
How do I set this up in the qmake file?
如何在 qmake 文件中进行设置？
回答by Masci
Filesystem layout:
文件系统布局：
MyProject
|_ myproject.pro
|_ core
|_ core.cpp
|_ core.h
|_ core.pro
|_ app
|_ main.cpp
|_ app.pro
myproject.pro:
myproject.pro:
TEMPLATE = subdirs
CONFIG += ordered
SUBDIRS = core \
app
app.depends = core
core.pro:
核心.pro：
TEMPLATE = lib
CONFIG += staticlib
HEADERS = core.h
SOURCES = core.cpp
app.pro:
app.pro:
TEMPLATE = app
SOURCES = main.cpp
LIBS += -L../core -lcore
TARGET = ../app-exe # move executable one dire up
回答by Farabi Ahmed Tarhan
If you are utilizing resources in your static library you should import them in your application as well. Q_INIT_RESOURCEis the way of importing a resource file into the application.
如果您正在使用静态库中的资源，您也应该将它们导入到您的应用程序中。Q_INIT_RESOURCE是将资源文件导入应用程序的方式。
Assume that you have a resources file with file name as myResources.qrcin static library. Then, you should initialize this in the app as given below:
假设您有一个资源文件，文件名与myResources.qrc静态库中的一样。然后，您应该在应用程序中初始化它，如下所示：
QApplication a(argc, argv);
Q_INIT_RESOURCE(resources); //Magic is here.
MainWindow w;
w.show();
a.exec();
The .pro file might be modified as given below for the great example given by Masci:
对于 Masci 给出的例子，.pro 文件可能会被修改如下：
TEMPLATE = lib
CONFIG += staticlib
HEADERS = core.h
SOURCES = core.cpp
RESOURCES += myResources.qrc
