使用qmake将dll安装到2个目标(路径）中

Install dll into 2 targets (paths) with qmake

本文关键字：目标 路径 2个 qmake dll 安装 使用      更新时间：2023-10-16

有以下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（QTCREATOR_BIN_PATH已设置）。如何正确写入第二次安装，使dll安装到2个目的地？

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

如何正确写入我的项目目标的副本，以便安装dll进入2个目的地？

您可以尝试使用QMAKE_EXTRA_COMPILERS:创建新的目标路径

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在构建后复制，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地转义输入，但它在SO上更广为人知：https://stackoverflow.com/search?q=QMAKE_POST_LINK

这里有建议：https://forum.qt.io/topic/66090/qmake-does-not-generate-2nd-install-target-in-makefile/3#

根据文件(https://wiki.qt.io/QMake-top-level-srcdir-and-builddir)正确的构建目录宏是$$OUT_PWD，所以正确的安装代码是：

target.path = $$[QT_INSTALL_PLUGINS]/designer
creator_target.name = Copying the target dll to Qt Creator plugins directory as well
creator_target.input = $qtLbraryTarget(WidgetBoxPlugin)
creator_target.path  = $$(QTCREATOR_BIN_PATH)/plugins/designer
creator_target.CONFIG += no_check_exist
creator_target.output = WidgetBoxPlugin.dll
creator_target.files = $$OUT_PWD/release/WidgetBoxPlugin.dll
QMAKE_EXTRA_COMPILERS += creator_target
INSTALLS += target creator_target

奇怪的是，为什么[]括号只适用于target，而（）对于creator_target是必需的？

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