c++ - 使用 qmake 将 dll 安装到 2 个目标(路径)中

Question

有如下qt pro文件:

CONFIG      += plugin debug_and_release
TARGET      = $$qtLibraryTarget(WidgetBoxPlugin)
TEMPLATE    = lib
...
target.path = $$[QT_INSTALL_PLUGINS]/designer
creator_target.path = $$[QTCREATOR_BIN_PATH]/plugins/designer
INSTALLS    += target creator_target

结果 dll 文件被复制到 2 个路径(目标)中。现在由于某些原因它不起作用:qmake 不会为第二个目标生成安装(复制)脚本(设置了 QTCREATOR_BIN_PATH)。如何正确编写第二次安装以便将 dll 安装到 2 个目的地？

完整项目:https://github.com/akontsevich/WidgetBox

Answer 1

How to write a copy of my project target correctly so dll being installed into 2 destinations?

您可以尝试使用 QMAKE_EXTRA_COMPILERS 创建一个新的目标路径:

http://blog.qt.io/blog/2008/04/16/the-power-of-qmake/

creator_target.name = Copying the target dll to Qt Creator plugins directory as well
creator_target.input = $$qtLibraryTarget(WidgetBoxPlugin)
creator_target.path  = $$[QTCREATOR_BIN_PATH]/plugins/designer
creator_target.CONFIG += target_predeps no_link
creator_target.output = WidgetBoxPlugin.dll
QMAKE_EXTRA_COMPILERS += creator_target

INSTALLS += creator_target

另一种可能更简单的方法是始终尝试复制后期构建，但使用 xcopy/D/Y 命令语法，如果目标存在，我们可以避免复制:

QMAKE_POST_LINK += xcopy /d/y $$qtLibraryTarget(WidgetBoxPlugin) ${QTCREATOR_BIN_PATH}/plugins/designer

此命令的问题是正确转义输入，但在 SO 上更广为人知:https://stackoverflow.com/search?q=QMAKE_POST_LINK