Bug 560342

Summary:	[qt overlay] dev-qt/qtgui-5.5.0 fails to build
Product:	Gentoo Linux	Reporter:	octoploid <octoploid>
Component:	[OLD] Library	Assignee:	Qt Bug Alias <qt>
Status:	RESOLVED NEEDINFO
Severity:	normal	CC:	octoploid
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://bugreports.qt.io/browse/QTBUG-48255
Whiteboard:
Package list:		Runtime testing required:	---

Description octoploid 2015-09-13 12:54:00 UTC

...
x86_64-pc-linux-gnu-g++ -Wl,--no-demangle,--hash-style=gnu,--as-needed,--gc-sections,--icf=safe -Wl,--no-undefined -fuse-ld=gold -Wl,--enable-new-dtags -shared -o libqjpeg.so
 .obj/qjpeghandler.o .obj/main.o .obj/moc_main.o  -L/usr/lib -ljpeg -L/var/tmp/portage/dev-qt/qtgui-5.9999/work/qtgui-5.9999_build/lib -lQt5Gui -lQt5Core -lGL -lpthread  
.obj/qjpeghandler.o:qjpeghandler.cpp:function _ZN12QJpegHandlerC2Ev: error: undefined reference to '_Z26qt_convert_rgb888_to_rgb32PjPKhi'
.obj/qjpeghandler.o:qjpeghandler.cpp:function _ZN12QJpegHandler5writeERK6QImage: error: undefined reference to '_Z17qt_imageTransformR6QImage6QFlagsIN15QImageIOHandler14Trans
formationEE'
collect2: error: ld returned 1 exit status
Makefile:129: recipe for target '../../../../plugins/imageformats/libqjpeg.so' failed


Reproducible: Always

Comment 1 octoploid 2015-09-13 12:54:28 UTC

qtcore-5.9999 also fails.

Comment 2 Davide Pesavento (RETIRED) gentoo-dev

2015-09-13 15:37:00 UTC

Don't CC teams if you can't assign bugs.

You also failed to provide a full build log and your emerge --info.

Comment 3 octoploid 2015-09-13 16:09:20 UTC

It has nothing to do with a specific compiler version.
Look it the link command:
 -L/usr/lib -ljpeg -L/var/tmp/portage/dev-qt/qtgui-5.9999/work/qtgui-5.9999_build/lib -lQt5Gui 

This will use the already installed /usr/lib64/libQt5Gui.so.5.4 library 
and not the intended 
/var/tmp/portage/dev-qt/qtgui-5.5.0/work/qtbase-opensource-src-5.5.0/lib//libQt5Gui.so.5.4.

The "-L/usr/lib -ljpeg" part must come after -L/var/tmp/portage/dev-qt/qtgui-5.9999/work/qtgui-5.9999_build/lib -lQt5Gui

Comment 4 octoploid 2015-09-13 16:10:38 UTC

It should read:
/var/tmp/portage/dev-qt/qtgui-5.5.0/work/qtbase-opensource-src-5.5.0/lib//libQt5Gui.so.5.5
of course. Copy&paste error.

Comment 5 octoploid 2015-09-13 17:58:35 UTC

I have opened https://bugreports.qt.io/browse/QTBUG-48255

Comment 6 Davide Pesavento (RETIRED) gentoo-dev

2015-09-13 18:48:51 UTC

Can't reproduce, I don't have that -L/usr/lib in my command line.

You still haven't provided the requested info.