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260

answers:

1

Hi,

I'm trying to add the output of "git describe" to the about window of my application, so it's easier to find out what version of the application people use.

I can do it by adding the following compiler flag: -DAPP_VERSION="$(git describe HEAD)"

But since the project is based on qmake, I would like to find a way to put this into the Qt project file. Is this possible? And if so, how?

edit: I tried adding the following:

QMAKE_CXXFLAGS += -DAPP_VERSION="$(git describe HEAD)"

But it just gave me "-DAPP_VERSION=", so I suppose I have to use some escape characters, but I don't know which ones and where. :/

+2  A: 

Problem solved thanks to this link: http://robertcarlsen.net/blog/2009/01/06/qmake-xcode-bug-258

Here's a sample qt project I used to test it: qt.pro:

######################################################################
# Automatically generated by qmake (2.01a) Thu Apr 2 16:23:05 2009
######################################################################

TEMPLATE = app
TARGET =
DEPENDPATH += .
INCLUDEPATH += .

# Input
SOURCES += qt.cpp

QMAKE_CXXFLAGS += -DAPP_DATE=\\\"`date +'\"%a_%b_%d,_%Y\"'`\\\"
QMAKE_CXXFLAGS += -DAPP_VERSION=\\\"`git describe`\\\"

qt.cpp:

#ifndef APP_DATE
#define APP_DATE "1/1/1970"
#endif

#ifndef APP_VERSION
#define APP_VERSION "local-dev"
#endif

#include <QApplication>
#include <QLabel>
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QString version = QString("version ") + APP_VERSION + ' ' + APP_DATE;
    QLabel *label = new QLabel(version);
    label->show();
    return app.exec();
}
KIAaze