Adding build date to linux project

[SPlatten]

I found this online:

https://www.qtcentre.org/threads/5192-show-build-date-in-about-box

In my .pro file I added:

    DEFINES += "BUILDDATE=system(date +'%d-%m-%y %T')"

However this results in an error:

    [main.o] Error 2

Not terribly helpful, but that's all it shows, if I comment out the DEFINES and rebuild it will build without the error.

How do I solve this?

[jsulm]

@SPlatten From the link:
"Didn't you forget the $$? I can't test it for linux right now but to make it work for winxp as well it should be:
Qt Code:
Switch view

win32:DEFINES += BUILDDATE=$$system(date /t)"

[sierdzio]

$$system() not system().

Here is a working example: https://github.com/milosolutions/mwizardtemplate/blob/master/version.pri

[SPlatten]

Thank you, I couldn't find an example for linux, will try your suggestion now.

[SPlatten]

My entry now reads:

    DEFINES += "BUILDDATE=$$system(date +\"%d-%m-%y %T\")"

Now I get:

    No such file or directory
    File not found: arm-argo-linux-gnueabi-g++: 0906

Also keep in mind, I'm developing on Linux not Windows.

[Edit] Solved, changed line to:

    DEFINES += BUILDDATE=$$system(date +"%d-%m-%y %T")

[Edit 2] Actually, not completely solved, although the application now compiles, I still get no build date:

    QString strBldDate(BUILDDATE);

Its empty.

[CP71]

@SPlatten
Hi,
maybe it isn’t what you want, if you don’t need in your PRO but in your source I use:

char* data_ver = (char*)__DATE__;
char* time_ver = (char*)__TIME__;

ui->buildValue->setText(QString("%1 %2").arg(data_ver).arg(time_ver));

[SPlatten]

Thank you, but won't that only give the date and time of the source file that its implemented in, I want the system date and time at the time of build.

[SPlatten]

Is there any good source of information or tutorial on how to use definitions in the .pro file?

I've been told I can use message() in a .pro file and I have to view:

    message($$system(date +\"\\\"%d-%m-%y %T\\\"\")

And this works well, I can see in the General Messages pane when I build something like:

    Project MESSAGE: "26-06-19 10:55:11"

How can I use this to review the content of a definition? I've tried:

    message(BUILDDATE)

Just results in:

    Project MESSAGE: BUILDDATE

I also tried:

    message($$BUILDDATE)

The result is:

    Project MESSAGE:

So if the last one is correct, nothing is being assigned to BUILDDATE, how do I fix this?

[sierdzio]

You can print whole DEFINES like this:

message($$DEFINES)

[jsulm]

@SPlatten said in Adding build date to linux project:

but won't that only give the date and time of the source file that its implemented in

https://www.cprogramming.com/reference/preprocessor/__DATE__.html
"__DATE__ is a preprocessor macro that expands to current date (at compile time)"

[SPlatten]

Thank you the output is:

    Project MESSAGE: QT_QWS_CLIENTBLIT BUILDDATE=26-06-19 11:20:37

[SPlatten]

I will be abandoning the exploration of creating a definition from the system date and instead use DATE and TIME.

How do I prevent the editor from changing the text on the date and time fields?