[Buildroot] [PATCH 2/4] qt5: expose a QT5_QMAKE variable for other Qt5 packages

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear Peter Korsgaard,

On Sun, 02 Nov 2014 23:46:43 +0100, Peter Korsgaard wrote:

>  > diff --git a/package/qt5/qt5.mk b/package/qt5/qt5.mk
>  > index e9c59db..2a3e274 100644
>  > --- a/package/qt5/qt5.mk
>  > +++ b/package/qt5/qt5.mk
>  > @@ -17,3 +17,6 @@ define QT5_LA_PRL_FILES_FIXUP
>  >  		$(SED) "s%-L/usr/lib%%" $$i; \
>  >  	done
>  >  endef
>  > +
>  > +# Variable for other Qt applications to use
>  > +QT5_QMAKE = $(HOST_DIR)/usr/bin/qmake -spec devices/linux-buildroot-g++
> 
> This (and elsewhere) shows a bit of a mixup between BR2_PACKAGE_QT5 and
> qt5base - But ok, having BR2_PACKAGE_QT5 enabled without qt5base isn't
> really sensible (but is allowed by kconfig).

I hesitated between qt5.mk or qt5base.mk. I decided to go with qt5.mk,
with the following reasoning:

 * I wanted to name the variable QT5_QMAKE and not QT5BASE_QMAKE, to
   mimic what exists for qt4 (variable is named QT_QMAKE).

 * Since the variable was going to be named QT5_QMAKE, I found it would
   be odd to have it in qt5base.mk where all variables are
   QT5BASE_<foo>. So I went with qt5.mk instead.

> Should we just use BR2_PACKAGE_QT5BASE everywhere you check for BR2_PACKAGE_QT5?

Where exactly? Or shouldn't we have qt5base selected as soon as qt5 is
enabled?

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com