[SOLVED] Using wildcards for SOURCES when build dir is different from source dir

[lyuts]

Hi guys,

I'm stuck with one problem when building my project and still can't find the reason for such behaviour. Consider the following project layout.

@Project
|_Project.pro
|_Module1
|_Module1.pro
|_Part1
| |_f.cpp
| |_f.h
|_Part2
|_g.cpp
|_g.h@

Here is my Project.pro:
@TEMPLATE = subdirs

SUBDIRS = Module1@

Here is my Module1.pro:
@TEMPLATE = lib

HEADERS = $$PWD/Part1/.h
$$PWD/Part2/.h

SOURCES = $$PWD/Part1/.cpp
$$PWD/Part2/.cpp@

Now i create build directory, because I want it to be separate from source directory, and run qmake:

$ cd <Project/Path>
$ mkdir build
$ cd build
$ qmake ../Project.pro
$ make

And here I get the following error:

@make[1]: *** No rule to make target ../../../Module1/Part1/f.cpp', needed byf.o'. Stop.@

I suppose this is because I have used wildcards for setting SOURCES and HEADERS variable. I think so, because If I don't use them and type the whole concrete paths when setting SOURCE/HEADERS my build goes ok.

Is this how it is supposed to behave when using wildcards, or it is a bug? If that is how it should be does anybody knows the way to fix that (of course I want to use wildcards because it save time and space:) )?

Thanks

[Guest]

In Module1.pro, you don't need the "$$PWD/", you can write a relative path.

Also, qmake doesn't like to have a build directory under src, try this instead:

@
$ cd
$ cd ..
$ mkdir build
$ cd build
$ qmake ../src/Project.pro
$ make
@

[tobias.hunger]

I think you are having some other issue: Qmake is very picky with where it wants its build directory. Try putting the build directory parallel to the source directory, not into it.

[lyuts]

[quote author="Nicolas" date="1286191411"]In Module1.pro, you don't need the "$$PWD/", you can write a relative path.

Also, qmake doesn't like to have a build directory under src, try this instead:

@
$ cd
$ cd ..
$ mkdir build
$ cd build
$ qmake ../src/Project.pro
$ make
@[/quote]

I do have to write $$PWD. PWD is the directory where the .pro file is located (this is from qmake variable reference). The location of sources is relative to $$PWD.

bq. Try putting the build directory parallel to the source directory, not into it.

I tried the same with build directory outside source directory. But the result was the same. I haven't tried to use build directory that is on the same level as my source directory is. Having them on the same exact level - isn't that a wrong limitation?

Thanks.

UPD: I can build Qt Creator with build directory that is several levels upper than the source tree.

[Guest]

[quote author="lyuts" date="1286192482"] [quote author="Nicolas" date="1286191411"]In Module1.pro, you don&#39;t need the "$$PWD/", you can write a relative path.
[/quote]

I do have to write $$PWD. PWD is the directory where the .pro file is located (this is from qmake variable reference). The location of sources is relative to $$PWD.
[/quote]
I can assure you you don't need the $$PWD. Maybe you can give it a try without it.

No other idea, sorry.

[lyuts]

[quote author="Nicolas" date="1286192967"]
I can assure you you don't need the $$PWD. Maybe you can give it a try without it.
[/quote]

This is maybe true when no wildcards are used. I put wildcards there and the no files could be located without $$PWD. When I put $$PWD the files list contains my files but the path prefixed is not correct, i.e. lead to a wrong location.

[baysmith]

The undocumented qmake function files(glob) might do what you want. Try this for Module1.pro:

@
TEMPLATE = lib

HEADERS = $$files(Part1/.h)
$$files(Part2/.h)

SOURCES = $$files(Part1/.cpp)
$$files(Part2/.cpp)
@

[lyuts]

Bradley, that's exactly what I was looking for :) Thank you so much, this solved my problem.

[dfaure]

Bradley: any plans on getting that documented? :-)