Qmake configuration using Buildroot

Question

I’ve tried to add a package to Buildroot that uses Qt and Boost. The package uses qmake to generate a Makefile, this part seems to be working, however I get an error when I build saying:

Could not find qmake configuration file qws/linux-arm-g++.
Error processing project file: MsgDisplay.pro

The contents of my package is laid out like this:

DummyPgm
├── main.cpp
├── MsgDisplay.pri
├── MsgDisplay.pro
├── MsgDisplay.pro.user
├── MsgHandler.cpp
├── MsgHandler.h
├── MsgServer.cpp
├── MsgServer.h
├── Tcp
│   ├── TcpAddrPort.cpp
│   ├── TcpAddrPort.h
│   ├── TcpServer.cpp
│   ├── TcpServer.h
│   ├── TcpSocket.cpp
│   └── TcpSocket.h
└── Tools
    ├── Banner.cpp
    ├── Banner.h
    ├── IoExt.h
    ├── SeparateArgumentList.cpp
    ├── SeparateArgumentList.h
    └── SysTypes.h

2 directories, 20 files

I have added a package directory, dummypgm, which contains Config.in and dummypgm.mk files. The contents of the files are:

Config.in:

config BR2_PACKAGE_DUMMYPGM
    bool "dummypgm"
    help
      Foo Software.

      http://www.foo.com

dummypgm.mk:

DUMMYPGM_VERSION = 0.1.0
DUMMYPGM_SOURCE = DummyPgm-$(DUMMYPGM_VERSION).tar.gz

define DUMMYPGM_CONFIGURE_CMDS
    (cd $(@D); $(QT_QMAKE)  MsgDisplay.pro)
endef

define DUMMYPGM_BUILD_CMDS
    $(MAKE) -C $(@D)
endef


$(eval $(generic-package))

Since the package is hosted locally, I’ve simply put the DummyPgm-0.1.0.tar.gz in the dl directory.

I’ve also added the following to package/Config.in:

source "package/dummypgm/Config.in"

I’m a little lost as to why this doesn’t work, if anyone could help me I would be very grateful. Also, is there any way to call $(eval $(qmake-package)) or something?

Answer 1

Are you using Qt4 or Qt5 ? Your package/dummypgm/Config.in should have a depends on on one of them, and your dummypgm.mk should have a DUMMYPGM_DEPENDENCIES = qt or DUMMYPGM_DEPENDENCIES = qt5base.

My intuition is that you are using Qt5. In this case, you shouldn't call $(QT_QMAKE), but $(QT5_QMAKE).

Have a look at http://git.buildroot.net/buildroot/tree/package/qextserialport/qextserialport.mk for an example. Note that this example supports both Qt4 and Qt5, probably in your case you only need one of the two.

Also, you should really subscribe to the Buildroot mailing list, you would get a lot more answers than here.