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From: iyzsong@member.fsf.org (=?utf-8?B?5a6L5paH5q2m?=)
Subject: Re: QT install and search paths
Date: Thu, 24 Aug 2017 19:59:30 +0800
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In-Reply-To: <42cac0e9-d948-3ea1-7312-d003751fd6a8@crazy-compilers.com>
	(Hartmut Goebel's message of "Wed, 23 Aug 2017 20:25:10 +0200")
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To: Hartmut Goebel <h.goebel@crazy-compilers.com>
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Hartmut Goebel <h.goebel@crazy-compilers.com> writes:

> Hi,
>
> I'm currently working on the build of KDE's plasma-desktop. When strac-in=
g the tets, I dicoverd that plaugins are searched in
>
>  /gnu/store/=E2=80=A6-qtbase-5.9.1/plugins/=E2=80=A6
>
> while most of the KDE program use
>
>  /gnu/store/=E2=80=A6-plasma-workspace-5.10.4/lib/plugins/=E2=80=A6 (mind=
 the additional `lib`)
>
> which is not searched. Wondering why, I found this in qt.scm (qtbase):
>
> (search-path-specification
> (variable "QT_PLUGIN_PATH")
> (files '("plugins")))
>
> This means that `lib/plugins` is *not* included in QT_PLUGIN_PATH and thu=
s not searched. (Which I assume is the reason for many test-failures.)
>
> Also in qt.scm (qtbase) there is:
>
> (substitute* qt_config.prf
> =E2=80=A6
> (("\$\$\[QT_INSTALL_PLUGINS\]")
> "$$replace(dir, mkspecs/modules, plugins)")
>
> I assume this should make the plugins to be in stalled in =E2=80=A6/plugi=
ns,

Yes, 'dir' would be $out/mkspecs/modules, this will make a qmake based
package install its Qt plugins into $out/plugins.


> but KDE framework is installing into =E2=80=A6/lib/plugins.
>
> So I assume this is wrong or there are other places which need to be adpo=
ted to the changed directory layout.
>
> What do you think?

Currently, it doesn't follow a normal package layout, We should change
it to (like it in Debian and ArchLinux):

ARCHDATA:   lib/qt
DATA:       share/qt
DOCS:       share/doc/qt
HEADERS:    include/qt
LIBS:       lib
PLUGINS:    lib/qt/plugins
LIBEXECS:   lib/qt/libexec
BINS:       bin
IMPORTS:    lib/qt/imports
QML:        lib/qt/qml
EXAMPLES:   share/doc/qt/examples

Which need adjust the configure flags, search-patchs and the
qt_config.prf of our qtbase package (and maybe some kde ones, I don't
know).