gdb <value optimized out>

Mon Dec 13 00:17:13 GMT 2010

Oh and you could try another way. If you right click your project and select 
configuration, under CMake you can find CMAKE_BUILD_TYPE.
you can change between Release and Debug or RelWithDebugInfo there.

On Monday, December 13, 2010 02:05:41 G VM wrote:
> I got a step further.
> It seems that both -g3 -O0 and -g -O2 are in the c++ compilation lines
> (make -n). So the second take priority over the first.
> 
> However I still can't understand were those -g and -O2 are configured.
> The CMAKE_CXX_FLAGS_DEBUG and CMAKE_CXX_FLAGS don't have these.
> 
> If I do a grep for -O2 and remove those, and then do make all works as it
> should.
> 
> touch rdp/rdpview.cpp
> cd build
> make -p | grep rdpview
> 
>    1.
>       rdp/CMakeFiles/krdc_rdpplugin.dir/rdpview.o: ../rdp/rdpview.cpp
> ../core/hostpreferences.h ../core/remoteview.h ../rdp/rdphostpreferences.h
> ../rdp/rdpview.cpp ../rdp/rdpview.h /usr/include/KDE/../kdialog.h
> /usr/include/KDE/../kinputdialog.h /usr/include/KDE/../kmessagebox.h
> /usr/include/KDE/../kpassworddialog.h /usr/include/KDE/../kshell.h
> /usr/include/KDE/../kurl.h /usr/include/KDE/KDialog
> /usr/include/KDE/KInputDialog /usr/include/KDE/KMessageBox
> /usr/include/KDE/KPasswordDialog /usr/include/KDE/KShell
> /usr/include/KDE/KUrl /usr/include/KDE/KWallet/../../kwallet.h
> /usr/include/KDE/KWallet/Wallet /usr/include/qt4/Gentoo/gentoo-qconfig.h
> /usr/include/qt4/Qt3Support/q3cstring.h
> /usr/include/qt4/Qt3Support/q3valuelist.h /usr/include/qt4/QtCore/QEvent
> /usr/include/qt4/QtCore/QFlags /usr/include/qt4/QtCore/QMap
> /usr/include/qt4/QtCore/QObject /usr/include/qt4/QtCore/QPoint
> /usr/include/qt4/QtCore/QPointF /usr/include/qt4/QtCore/QProcess
> /usr/include/qt4/QtCore/QSize /usr/include/qt4/QtCore/QStringList
> /usr/include/qt4/QtCore/QUrl /usr/include/qt4/QtCore/QVariant
> /usr/include/qt4/QtCore/qabstractitemmodel.h
> /usr/include/qt4/QtCore/qalgorithms.h /usr/include/qt4/QtCore/qatomic.h
> /usr/include/qt4/QtCore/qatomic_alpha.h
> /usr/include/qt4/QtCore/qatomic_arch.h
> /usr/include/qt4/QtCore/qatomic_arm.h
> /usr/include/qt4/QtCore/qatomic_armv6.h
> /usr/include/qt4/QtCore/qatomic_avr32.h
> /usr/include/qt4/QtCore/qatomic_bfin.h
> /usr/include/qt4/QtCore/qatomic_bootstrap.h
> /usr/include/qt4/QtCore/qatomic_generic.h
> /usr/include/qt4/QtCore/qatomic_i386.h
> /usr/include/qt4/QtCore/qatomic_ia64.h
> /usr/include/qt4/QtCore/qatomic_macosx.h
> /usr/include/qt4/QtCore/qatomic_mips.h
> /usr/include/qt4/QtCore/qatomic_parisc.h
> /usr/include/qt4/QtCore/qatomic_powerpc.h
> /usr/include/qt4/QtCore/qatomic_s390.h
> /usr/include/qt4/QtCore/qatomic_sh.h
> /usr/include/qt4/QtCore/qatomic_sh4a.h
> /usr/include/qt4/QtCore/qatomic_sparc.h
> /usr/include/qt4/QtCore/qatomic_symbian.h
> /usr/include/qt4/QtCore/qatomic_vxworks.h
> /usr/include/qt4/QtCore/qatomic_x86_64.h
> /usr/include/qt4/QtCore/qbasicatomic.h /usr/include/qt4/QtCore/qbuffer.h
> /usr/include/qt4/QtCore/qbytearray.h /usr/include/qt4/QtCore/qchar.h
> /usr/include/qt4/QtCore/qconfig.h
> /usr/include/qt4/QtCore/qcoreapplication.h
> /usr/include/qt4/QtCore/qcoreevent.h /usr/include/qt4/QtCore/qdatastream.h
> /usr/include/qt4/QtCore/qeventloop.h /usr/include/qt4/QtCore/qfeatures.h
> /usr/include/qt4/QtCore/qglobal.h /usr/include/qt4/QtCore/qhash.h
> /usr/include/qt4/QtCore/qiodevice.h /usr/include/qt4/QtCore/qiterator.h
> /usr/include/qt4/QtCore/qline.h /usr/include/qt4/QtCore/qlinkedlist.h
> /usr/include/qt4/QtCore/qlist.h /usr/include/qt4/QtCore/qlocale.h
> /usr/include/qt4/QtCore/qmap.h /usr/include/qt4/QtCore/qmargins.h
> /usr/include/qt4/QtCore/qmetatype.h /usr/include/qt4/QtCore/qmimedata.h
> /usr/include/qt4/QtCore/qnamespace.h /usr/include/qt4/QtCore/qobject.h
> /usr/include/qt4/QtCore/qobjectdefs.h /usr/include/qt4/QtCore/qpair.h
> /usr/include/qt4/QtCore/qpoint.h /usr/include/qt4/QtCore/qpointer.h
> /usr/include/qt4/QtCore/qprocess.h /usr/include/qt4/QtCore/qrect.h
> /usr/include/qt4/QtCore/qregexp.h /usr/include/qt4/QtCore/qscopedpointer.h
> /usr/include/qt4/QtCore/qset.h /usr/include/qt4/QtCore/qshareddata.h
> /usr/include/qt4/QtCore/qsharedpointer.h
> /usr/include/qt4/QtCore/qsharedpointer_impl.h
> /usr/include/qt4/QtCore/qsize.h /usr/include/qt4/QtCore/qstring.h
> /usr/include/qt4/QtCore/qstringbuilder.h
> /usr/include/qt4/QtCore/qstringlist.h
> /usr/include/qt4/QtCore/qstringmatcher.h /usr/include/qt4/QtCore/qurl.h
> /usr/include/qt4/QtCore/qvariant.h /usr/include/qt4/QtCore/qvector.h
> /usr/include/qt4/QtGui/QAction /usr/include/qt4/QtGui/QApplication
> /usr/include/qt4/QtGui/QButtonGroup /usr/include/qt4/QtGui/QCheckBox
> /usr/include/qt4/QtGui/QDialog /usr/include/qt4/QtGui/QFormLayout
> /usr/include/qt4/QtGui/QGroupBox /usr/include/qt4/QtGui/QHBoxLayout
> /usr/include/qt4/QtGui/QHeaderView /usr/include/qt4/QtGui/QLabel
> /usr/include/qt4/QtGui/QLayout /usr/include/qt4/QtGui/QMessageBox
> /usr/include/qt4/QtGui/QSpacerItem /usr/include/qt4/QtGui/QSpinBox
> /usr/include/qt4/QtGui/QVBoxLayout /usr/include/qt4/QtGui/QWidget
> /usr/include/qt4/QtGui/QX11EmbedContainer
> /usr/include/qt4/QtGui/qabstractbutton.h
> /usr/include/qt4/QtGui/qabstractitemdelegate.h
> /usr/include/qt4/QtGui/qabstractitemview.h
> /usr/include/qt4/QtGui/qabstractscrollarea.h
> /usr/include/qt4/QtGui/qabstractslider.h
> /usr/include/qt4/QtGui/qabstractspinbox.h /usr/include/qt4/QtGui/qaction.h
> /usr/include/qt4/QtGui/qactiongroup.h
> /usr/include/qt4/QtGui/qapplication.h /usr/include/qt4/QtGui/qboxlayout.h
> /usr/include/qt4/QtGui/qbrush.h /usr/include/qt4/QtGui/qbuttongroup.h
> /usr/include/qt4/QtGui/qcheckbox.h /usr/include/qt4/QtGui/qcolor.h
> /usr/include/qt4/QtGui/qcursor.h /usr/include/qt4/QtGui/qdesktopwidget.h
> /usr/include/qt4/QtGui/qdialog.h /usr/include/qt4/QtGui/qdrag.h
> /usr/include/qt4/QtGui/qevent.h /usr/include/qt4/QtGui/qfont.h
> /usr/include/qt4/QtGui/qfontinfo.h /usr/include/qt4/QtGui/qfontmetrics.h
> /usr/include/qt4/QtGui/qformlayout.h /usr/include/qt4/QtGui/qframe.h
> /usr/include/qt4/QtGui/qgridlayout.h /usr/include/qt4/QtGui/qgroupbox.h
> /usr/include/qt4/QtGui/qheaderview.h /usr/include/qt4/QtGui/qicon.h
> /usr/include/qt4/QtGui/qimage.h
> /usr/include/qt4/QtGui/qitemselectionmodel.h
> /usr/include/qt4/QtGui/qkeysequence.h /usr/include/qt4/QtGui/qlabel.h
> /usr/include/qt4/QtGui/qlayout.h /usr/include/qt4/QtGui/qlayoutitem.h
> /usr/include/qt4/QtGui/qmacdefines_mac.h /usr/include/qt4/QtGui/qmatrix.h
> /usr/include/qt4/QtGui/qmessagebox.h /usr/include/qt4/QtGui/qmime.h
> /usr/include/qt4/QtGui/qpaintdevice.h
> /usr/include/qt4/QtGui/qpainterpath.h /usr/include/qt4/QtGui/qpalette.h
> /usr/include/qt4/QtGui/qpixmap.h /usr/include/qt4/QtGui/qpolygon.h
> /usr/include/qt4/QtGui/qregion.h /usr/include/qt4/QtGui/qrgb.h
> /usr/include/qt4/QtGui/qrubberband.h /usr/include/qt4/QtGui/qsizepolicy.h
> /usr/include/qt4/QtGui/qslider.h /usr/include/qt4/QtGui/qspinbox.h
> /usr/include/qt4/QtGui/qstyle.h /usr/include/qt4/QtGui/qstyleoption.h
> /usr/include/qt4/QtGui/qtabbar.h /usr/include/qt4/QtGui/qtabwidget.h
> /usr/include/qt4/QtGui/qtransform.h
> /usr/include/qt4/QtGui/qtransportauth_qws.h
> /usr/include/qt4/QtGui/qvalidator.h /usr/include/qt4/QtGui/qwidget.h
> /usr/include/qt4/QtGui/qwindowdefs.h
> /usr/include/qt4/QtGui/qwindowdefs_win.h /usr/include/qt4/QtGui/qwmatrix.h
> /usr/include/qt4/QtGui/qx11embed_x11.h /usr/include/qt4/QtXml/QDomDocument
> /usr/include/qt4/QtXml/qdom.h core/settings.h rdp/../../rdp/rdpview.h
> rdp/rdpview.moc rdp/ui_rdppreferences.h
> rdp/CMakeFiles/krdc_rdpplugin.dir/flags.make 2.
>       #  Implicit rule search has not been done.
>    3.
>       #  Modification time never checked.
>    4.
>       #  File has not been updated.
>    5.
>       #  commands to execute (from
> `rdp/CMakeFiles/krdc_rdpplugin.dir/build.make', line 126): 6.
>               $(CMAKE_COMMAND) -E cmake_progress_report
> /home/xxx/kdenetwork-4.4.5/krdc/build/CMakeFiles $(CMAKE_PROGRESS_4) 7.
>               @$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR)
> --green "Building CXX object rdp/CMakeFiles/krdc_rdpplugin.dir/rdpview.o"
> 8.
>               cd /home/xxx/kdenetwork-4.4.5/krdc/build/rdp && /usr/bin/c++ 
>  $(CXX_DEFINES) $(CXX_FLAGS) -o CMakeFiles/krdc_rdpplugin.dir/rdpview.o -c
> /home/xxx/kdenetwork-4.4.5/krdc/rdp/rdpview.cpp
> 
> 
> Vi rdp/CMakeFiles/krdc_rdpplugin.dir/flags.make
> # CMAKE generated file: DO NOT EDIT!
> # Generated by "Unix Makefiles" Generator, CMake Version 2.8
> 
> # compile CXX with /usr/bin/c++
> CXX_FLAGS =  -Wnon-virtual-dtor -Wno-long-long -ansi -Wundef -Wcast-align
> -Wchar-subscripts -Wall -W -Wpointer-arith -Wformat-security
> -fno-exceptions -DQT_NO_EXCEPTIONS -fno-check-new -fno-common
> -Woverloaded-virtual -fno-threadsafe-statics -fvisibility=hidden
> -fvisibility-inlines-hidden -g -O2 -fno-reorder-blocks -fno-schedule-insns
> -fno-inline -fPIC -I/home/xxx/kdenetwork-4.4.5/krdc/build/rdp
> -I/home/xxx/kdenetwork-4.4.5/krdc/rdp -I/home/xxx/kdenetwork-4.4.5/krdc
> -I/home/xxx/kdenetwork-4.4.5/krdc/build
> -I/home/xxx/kdenetwork-4.4.5/krdc/core
> -I/home/xxx/kdenetwork-4.4.5/krdc/build/core -I/usr/include/KDE
> -I/usr/include/qt4/QtXmlPatterns -I/usr/include/qt4/QtXml
> -I/usr/include/qt4/QtWebKit -I/usr/include/qt4/QtUiTools
> -I/usr/include/qt4/QtTest -I/usr/include/qt4/QtSvg
> -I/usr/include/qt4/QtSql -I/usr/include/qt4/QtScriptTools
> -I/usr/include/qt4/QtScript -I/usr/include/qt4/QtOpenGL
> -I/usr/include/qt4/QtNetwork -I/usr/include/qt4/QtHelp
> -I/usr/include/qt4/QtDesigner -I/usr/include/qt4/QtDBus
> -I/usr/include/qt4/QtAssistant -I/usr/include/qt4/Qt3Support
> -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtCore -I/usr/include/qt4/Qt
> -I/usr/share/qt4/mkspecs/default -I/usr/include/qt4   -D_GNU_SOURCE
> -D_LARGEFILE64_SOURCE
> 
> CXX_DEFINES = -DMAKE_KRDC_RDPPLUGIN_LIB -D_BSD_SOURCE -D_XOPEN_SOURCE=500
> -D_BSD_SOURCE -DQT_NO_STL -DQT_NO_CAST_TO_ASCII -D_REENTRANT
> -DKDE_DEPRECATED_WARNINGS -DKDE_DEFAULT_DEBUG_AREA=5012
> 
> So here it is already set.
> 
> Hopefuly this helps finding the cause.
> 
> From: drums_gvm at hotmail.com
> To: kdevelop at kdevelop.org
> Subject: gdb <value optimized out>
> Date: Sat, 11 Dec 2010 16:59:27 +0100
> 
> 
> 
> 
> 
> 
> 
> 
> Hi all,
> 
> I have been searching for a solution for my problem but unfortunately I
> didn't find a solution.
> 
> Problem:
> When I start my compiled program with gdb and want to print the value of an
> integer (probably other data types as well) I get the message <value
> optimized out>. I am a gentoo user so I am aware that -O exists.
> So I went searching in KDevelop on how to configure this.
> 
> I changed some flags in the "Open Options", "Advanced settings" to use -O0.
> 
> CMAKE_CXX_FLAGS
> 
> CMAKE_CXX_FLAGS_DEBUG
> 
> CMAKE_C_FLAGS
> 
> CMAKE_C_FLAGS_DEBUG
> ...
> 
> And on the kdevelop forum I found a thread which mentioned using -g3 as
> well. I did this, cleaned and recompiled the program. But still I have the
> same result.
> 
> I really have no clue anymore what I am doing wrong.
> Anyone has an idea about this?
> 
> I use:
> 
> 
> Version 4.0.2 (using KDevPlatform 1.0.2)
> Using KDE Development Platform 4.4.5 (KDE 4.4.5)
> Program I want to compile to debug is Krdc.
> 
> Thanks in advance for your help!
> 
> 
> _______________________________________________
> kdevelop mailing list
> kdevelop at kdevelop.org
> https://barney.cs.uni-potsdam.de/mailman/listinfo/kdevelop