"make arguments" via qmake?

Asperamanca

I'm trying to set a make argument via the .pro file. From the qmake reference, I believed it should be QMAKE_CXXFLAGS, but the value I add there never appears in the "make arguments" field in Qt Creator.

Which qmake variable do I have to use?

sierdzio

Make arguments in Qt Creator (Projects pane) are independent from ones set in qmake .pro file. qmake does not invoke make, by the way, it only generates the Makefile.

Asperamanca

So if Qt Creator loads a .pro file (and assuming no .pro.user file exists), it simply ignores my settings?

I am aware that qmake does not invoke the make itself.
But basically, all I need is for my flag to appear in the makefile.

sierdzio

Tobias would have to fill in the details. You can definitely use CXXFLAGS to add compiler flags to Makefile. I don't know about adding other flags. You can get all available vars from "the reference":http://doc.qt.digia.com/qt/qmake-variable-reference.html.

MAKEFILE var is nice to look at - it allows to change the name of the makefile, so that you can use your own "main" file with standard name.

Asperamanca

QMAKE_CXXFLAGS is only a part of what I need.

I need to be able to define make arguments, basically append to the environment variable MAKEFLAGS.
How would I do that with qmake commands?

sierdzio

DEFINES is a good start. As hinted above, I don't know how to do it cleanly. You can use the MAKEFILE variable trick (create your own Makefile with flags set, tell qmake to generate something like temp_makefile, link both files and voila) - it's nasty, but should work.

Asperamanca

The way I understand it, DEFINES is something different than an environment variable, and the make won't see it. Also, there does not seem to be a flag in qmake at all to pass on "makeflags", so the second best option would be for me to define an environment variable.

All I have that I give the compile server is the .pro file, so the environment variable would need to be set by qmake based on some function or variable within my .pro file.

Asperamanca

Found a way to pass the option as a command line argument. Solved for me. Thanks!

? Offline

How?

Asperamanca

Unfortunately, I don't remember and even after a lengthy search did not find what my original problem was. Sorry!

I have since learned to post my own solutions to my own threads.

kumararajas

@Asperamanca Can you please tell me how did you pass a variable to qmake?

Thanks,
Kumara

top-master

If you set the environment variable MAKEFLAGS, the Make program will pass it to any sub-make call.

But nmake does no such thing, hence QMake redirects MAKEFLAGS to each of sub-nmakes, like:

@set MAKEFLAGS=$(MAKEFLAGS)
$(MAKE)

Also, the XD framework's QMake supports SUBMAKE_FLAGS, which just appends to command line (without changing MAKEFLAGS environement-variable).