Details
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Bug
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Resolution: Done
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P3: Somewhat important
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Qt Creator 3.0.0
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None
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CentOS 6.5 with Qt 5.2.0 built from tarball source.
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8a8092912b23aef54b9d6c9f02075a4057335f19
Description
Building QtCreator from the tarball source fails due to the following error:
make[3]: Entering directory `/install/build/qt-creator-3.0.0_CentOS_6.5/src/shared/qbs/src/lib'
g++ -c -pipe -Werror -O2 -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC -DQT_CREATOR -DQML_BUILD_STATIC_LIB -DQBS_LIBRARY -DSRCDIR=\"/install/src/qt-creator-opensource-src-3.0.0/src/shared/qbs/src/lib\" -DQBS_VERSION=\"1.1.1\" -DQT_NO_DEBUG -DQT_XML_LIB -DQT_SCRIPT_LIB -DQT_CORE_LIB -I/usr/local/Qt-5.2.0/mkspecs/linux-g++ -I/install/src/qt-creator-opensource-src-3.0.0/src/shared/qbs/src/lib -I/install/src/qt-creator-opensource-src-3.0.0/src/shared/qbs/src/lib -I/install/src/qt-creator-opensource-src-3.0.0/src/shared/qbs/src -I/usr/local/Qt-5.2.0/include -I/usr/local/Qt-5.2.0/include/QtXml -I/usr/local/Qt-5.2.0/include/QtScript -I/usr/local/Qt-5.2.0/include/QtCore -I. -I. -o project.o /install/src/qt-creator-opensource-src-3.0.0/src/shared/qbs/src/lib/api/project.cpp
cc1plus: warnings being treated as errors
In file included from /usr/local/Qt-5.2.0/include/QtCore/qobject.h:56,
from /usr/local/Qt-5.2.0/include/QtCore/qsharedpointer_impl.h:65,
from /usr/local/Qt-5.2.0/include/QtCore/qsharedpointer.h:50,
from /usr/local/Qt-5.2.0/include/QtCore/QSharedPointer:1,
from /install/src/qt-creator-opensource-src-3.0.0/src/shared/qbs/src/lib/api/../language/forward_decls.h:32,
from /install/src/qt-creator-opensource-src-3.0.0/src/shared/qbs/src/lib/api/project.h:32,
from /install/src/qt-creator-opensource-src-3.0.0/src/shared/qbs/src/lib/api/project.cpp:29:
/usr/local/Qt-5.2.0/include/QtCore/qbytearray.h: In function ‘int qRegisterNormalizedMetaType(const QByteArray&, T*, typename QtPrivate::MetaTypeDefinedHelper<T, (QMetaTypeId2::Defined && (! QMetaTypeId2::IsBuiltIn))>::DefinedType) [with T = qbs::Internal::InternalJob*]’:
/usr/local/Qt-5.2.0/include/QtCore/qbytearray.h:446: error: dereferencing pointer ‘<anonymous>’ does break strict-aliasing rules
/usr/local/Qt-5.2.0/include/QtCore/qbytearray.h:451: error: dereferencing pointer ‘<anonymous>’ does break strict-aliasing rules
/usr/local/Qt-5.2.0/include/QtCore/qarraydata.h:104: error: dereferencing pointer ‘<anonymous>’ does break strict-aliasing rules
/usr/local/Qt-5.2.0/include/QtCore/qgenericatomic.h:96: error: dereferencing pointer ‘<anonymous>’ does break strict-aliasing rules
/usr/local/Qt-5.2.0/include/QtCore/qbytearray.h:408: note: initialized from here
make[3]: *** [project.o] Error 1
make[3]: Leaving directory `/install/build/qt-creator-3.0.0_CentOS_6.5/src/shared/qbs/src/lib'
The error seems to be caused by the -Werror flag. This flag is set in the file src/shared/qbs/src/lib/lib.pro in line 26. When the flag is commented out in this file, the compilation is successful.
For me it is unclear why the flag is set there. Interestingly the directory src/shared/qbs does not exist in the code on qt.gitorious.org.