qmake - 如何在qmake中引用源目录？

Question

我加了

version.target = version.h
version.commands = bash generate-version.sh

QMAKE_EXTRA_TARGETS += version

PRE_TARGETDEPS += version.h

到项目，但它尝试在目标目录中运行“generate-version.sh”:

make: Leaving directory `.../qqq-build-desktop'
make: Entering directory `.../qqq-build-desktop'
Makefile:236: warning: overriding commands for target `version.h'
Makefile:233: warning: ignoring old commands for target `version.h'
bash generate-version.sh
bash: generate-version.sh: No such file or directory
make: Leaving directory `.../qqq-build-desktop'

有$$ DESTDIR，但我看不到$$ SRCDIR。如何在qmake中引用项目目录(或如何重写它)？

Answer 1

我的第一个想法是尝试重写

version.commands = bash generate-version.sh

从而不必调用shell脚本。也许您可以将所有语句合并为一行:

version.commands = echo \'char VERSION[]=\"1.0\";\' > version.h && ls && echo Done

如果您一直想调用脚本，那么可能正在寻找PWD或OUT_PWD。从 qmake Variable Reference

PWD

This variable contains the full path leading to the directory where the qmake project file (project.pro) is located.

OUT_PWD

This variable contains the full path leading to the directory where qmake places the generated Makefile.

文档中未提及的一个警告是，如果您正在执行递归qmake，则PWD指的是从中读取顶级.pro文件的位置。因此，如果您从{proj-root}运行qmake -r，则当最终读入sub/sub/sub/dir-proj.pro时，PWD仍将指向{proj-root}。
假设generate-version.sh与顶级.pro文件位于同一目录中，则可以尝试:

version.commands = bash $$PWD/generate-version.sh