Qt project files and PREFIX variable

I in开发者_开发问答cluded

PREFIX = /usr/local

inside my project file and then I run

qmake myproject.pro

The makefile doesn't say anything about PREFIX though so I assume that i'm doing something wrong. Any ideas?

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PREFIX doesn't mean anything in qmake files. The target for files is done via the target parameter. So if you want to make PREFIX determine the base location, such as /usr/local, you can do do something like this:

isEmpty(PREFIX) {
 PREFIX = /usr/local
}
TARGET = myapp
TARGET.path = $$PREFIX/

The isEmpty(PREFIX) will allow it to be changed during the command line call to qmake, e.g.

qmake PREFIX=/opt

---

That is INSTALL_ROOT variable on install, try
make install INSTALL_ROOT="your path"

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If you like to pass PREFIX to qmake, so you can do as follow:

• Open Projects from left pan or using Ctrl+5 key
• Expand Build Steps
• Add PREFIX=/your/path/ into Additional arguments field