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Bug#696096: qt4-x11 ia64 FTBFS only on the buildds

Package: src:qt4-x11
Version: 4:4.8.2+dfsg-4
Severity: important
Tags: moreinfo




Lisandro Damián Nicanor Pérez Meyer <perezmeyer@gmail.com>
wrote to debian-ia64@lists.debian.org, ia64@buildd.debian.org, pkg-kde-talk@lists.alioth.debian.org 
on Sat, 8 Dec 2012 21:33:30 -0300:
Please keep pkg-kde-talk@lists.alioth.debian.org CCed, we are not subscribed to this lists. Thanks!
Hi ia64 porters/buildd maintainers! I'm writing you because of the strange FTBFS we have for qt4-x11 [0], which are normally solved by doing a give-back until it builds :-/ .
It's not the first time we see this, and as in other ocassions, we have accessed a porter machine (merulo.debian.org) to try to determine what's going on. "Saddly" all we could do is sucessfully build the packages. We could not reproduce the bug in any way :-(
This last time Pino Toscano tried three times and one myself. You can get the compressed log from my build from [1].
I would like to know if there is something else we/you can try to solve this issue. Maybe it only triggers inside sbuild?
This is the only issue that keeps some security fixes of Qt out of wheezy, and so it would be really great if we can find a way to solve this FTBFS. 

[0] <https://buildd.debian.org/status/logs.php?pkg=qt4-x11&arch=ia64>
[1] <http://perezmeyer.com.ar/temp/qt4_x11_buildlog.txt.xz>


--
Lisandro Damián Nicanor Pérez Meyer
http://perezmeyer.com.ar/
http://perezmeyer.blogspot.com/




The tail of the most recent build log:

cd src/corelib/ && make -f Makefile install
make[3]: Entering directory `/build/buildd-qt4-x11_4.8.2+dfsg-4-ia64-CRoDdA/qt4-x11-4.8.2+dfsg/src/corelib' g++ -c -include .pch/release-shared/QtCore -g -O2 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -I/usr/include/freetype2 -pthread -I/usr/include/glib-2.0 -I/usr/lib/ia64-linux-gnu/glib-2.0/include -O2 -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC -DQT_SHARED -DQT_BUILD_CORE_LIB -DQT_NO_USING_NAMESPACE -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DELF_INTERPRETER=\"/lib/ld-linux-ia64.so.2\" -DQLIBRARYINFO_EPOCROOT -DQT_USE_ICU -DHB_EXPORT=Q_CORE_EXPORT -DQT_NO_DEBUG -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../mkspecs/linux-g++ -I. -I../../include -I../../include/QtCore -I.rcc/release-shared -Iglobal -I../../tools/shared -I../3rdparty/harfbuzz/src -I../3rdparty/md5 -I../3rdparty/md4 -I.moc/release-shared -o .obj/release-shared/qlibraryinfo.o global/qlibraryinfo.cpp 
cc1plus: error: one or more PCH files were found, but they were invalid
cc1plus: error: use -Winvalid-pch for more information
cc1plus: fatal error: .pch/release-shared/QtCore: No such file or directory
compilation terminated.
make[3]: *** [.obj/release-shared/qlibraryinfo.o] Error 1
make[3]: Leaving directory `/build/buildd-qt4-x11_4.8.2+dfsg-4-ia64-CRoDdA/qt4-x11-4.8.2+dfsg/src/corelib' 
make[2]: *** [sub-corelib-install_subtargets-ordered] Error 2
make[2]: Leaving directory `/build/buildd-qt4-x11_4.8.2+dfsg-4-ia64-CRoDdA/qt4-x11-4.8.2+dfsg' dh_auto_install: make -j1 install DESTDIR=/build/buildd-qt4-x11_4.8.2+dfsg-4-ia64-CRoDdA/qt4-x11-4.8.2+dfsg/debian/tmp AM_UPDATE_INFO_DIR=no INSTALL_ROOT=/build/buildd-qt4-x11_4.8.2+dfsg-4-ia64-CRoDdA/qt4-x11-4.8.2+dfsg/debian/tmp/ returned exit code 2 
make[1]: *** [override_dh_auto_install] Error 29
make[1]: Leaving directory `/build/buildd-qt4-x11_4.8.2+dfsg-4-ia64-CRoDdA/qt4-x11-4.8.2+dfsg' 
make: *** [binary-arch] Error 2
I couldn't figure out yet what is really going on with the package on the buildds, and why g++ refuses the precompiled header file (pch). 
It builds fine on my box.

Machine: Dell PowerEdge 3250
Processor: 2x Itanium Madison 1.5GHz 6M
Memory: 16G


I suggest doing the following:
- Please could you make a new dfsg version of the qt4-x11 package for unstable. Please apply both attached patches. - The patches won't fix the problem, but we'll get a more verbose error message when it fails next time on the buildd.
The patch revert_ia64-remove-parallel.patch reverts the removal of the dh --parallel switch on ia64 which you have done with version 4:4.7.4-1 a year ago. The patch add-winvalid-pch.patch adds the -Winvalid-pch switch to any g++ and gcc invocation that uses a pch file. This should give us the reason why the compiler doesn't recognize the pch. 

This shouldn't have any side effect to the other archs than ia64.

I'll watch out the buildd log of the next dfsg version of the package.

Stephan

Attachment: revert-ia64-remove-parallel.patch
Description: revert-ia64-remove-parallel.patch

Attachment: add-winvalid-pch.patch
Description: add-winvalid-pch.patch

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