获取Qt的安装信息

❝通过qmake或QLibraryInfo类获取Qt的安装信息。 ❞

使用QMake

执行命令：

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qmake -query

输出：

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QT_SYSROOT:
QT_INSTALL_PREFIX:C:/Qt/Qt5.12.1/5.12.1/msvc2017
QT_INSTALL_ARCHDATA:C:/Qt/Qt5.12.1/5.12.1/msvc2017
QT_INSTALL_DATA:C:/Qt/Qt5.12.1/5.12.1/msvc2017
QT_INSTALL_DOCS:C:/Qt/Qt5.12.1/Docs/Qt-5.12.1
QT_INSTALL_HEADERS:C:/Qt/Qt5.12.1/5.12.1/msvc2017/include
QT_INSTALL_LIBS:C:/Qt/Qt5.12.1/5.12.1/msvc2017/lib
QT_INSTALL_LIBEXECS:C:/Qt/Qt5.12.1/5.12.1/msvc2017/bin
QT_INSTALL_BINS:C:/Qt/Qt5.12.1/5.12.1/msvc2017/bin
QT_INSTALL_TESTS:C:/Qt/Qt5.12.1/5.12.1/msvc2017/tests
QT_INSTALL_PLUGINS:C:/Qt/Qt5.12.1/5.12.1/msvc2017/plugins
QT_INSTALL_IMPORTS:C:/Qt/Qt5.12.1/5.12.1/msvc2017/imports
QT_INSTALL_QML:C:/Qt/Qt5.12.1/5.12.1/msvc2017/qml
QT_INSTALL_TRANSLATIONS:C:/Qt/Qt5.12.1/5.12.1/msvc2017/translations
QT_INSTALL_CONFIGURATION:
QT_INSTALL_EXAMPLES:C:/Qt/Qt5.12.1/Examples/Qt-5.12.1
QT_INSTALL_DEMOS:C:/Qt/Qt5.12.1/Examples/Qt-5.12.1
QT_HOST_PREFIX:C:/Qt/Qt5.12.1/5.12.1/msvc2017
QT_HOST_DATA:C:/Qt/Qt5.12.1/5.12.1/msvc2017
QT_HOST_BINS:C:/Qt/Qt5.12.1/5.12.1/msvc2017/bin
QT_HOST_LIBS:C:/Qt/Qt5.12.1/5.12.1/msvc2017/lib
QMAKE_SPEC:win32-msvc
QMAKE_XSPEC:win32-msvc
QMAKE_VERSION:3.1
QT_VERSION:5.12.1

如果我们想得到某个信息，如QT_INSTALL_LIBS。可以执行下列命令：

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qmake -query QT_INSTALL_LIBS

输出：

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C:/Qt/Qt5.12.1/5.12.1/msvc2017/bin

使用QLibraryInfo

另外我们还可以在程序中使用QLibraryInfo类的location函数获取到Qt的安装信息。

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QString QLibraryInfo::location(QLibraryInfo::LibraryLocation loc)

可使用的枚举参数：

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enum LibraryLocation
{
    PrefixPath = 0,
    DocumentationPath,
    HeadersPath,
    LibrariesPath,
    LibraryExecutablesPath,
    BinariesPath,
    PluginsPath,
    ImportsPath,
    Qml2ImportsPath,
    ArchDataPath,
    DataPath,
    TranslationsPath,
    ExamplesPath,
    TestsPath,
#ifdef QT_BUILD_QMAKE
    SysrootPath,
    SysrootifyPrefixPath,
    HostBinariesPath,
    HostLibrariesPath,
    HostDataPath,
    TargetSpecPath,
    HostSpecPath,
    HostPrefixPath,
    LastHostPath = HostPrefixPath,
#endif
    SettingsPath = 100
};

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