<![CDATA[Linker errors when HDF5 is being used]]>Hi ,
I have a QT project which on its own runs fine.
But when I try to use some HDF5 functions / classes , it generates linker error.
H5::h5File::h5File(...)

Can someone please help ?

thanks & warm regards,
~ Rudresh

]]>https://forum.qt.io/topic/145281/linker-errors-when-hdf5-is-being-usedRSS for NodeFri, 09 Oct 2026 11:09:53 GMTMon, 22 May 2023 12:11:11 GMT60<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 17:28:17 GMT]]>@JonB

Hi Jon ,

Thanks.
Right , added \ and its working. Creating the hdf file now.

Thanks & warm regards,
~ Rudresh

]]>https://forum.qt.io/post/758989https://forum.qt.io/post/758989Mon, 22 May 2023 17:28:17 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 17:20:31 GMT]]>@Rudresh
If that it is literally what you have in LIBS += ... section then only the first line ends in a \ so it reads the second line, all the other lines would not be included. I suggest you look in Creator "Build/Compiler Output" what the actual command line for the linker is.

]]>https://forum.qt.io/post/758988https://forum.qt.io/post/758988Mon, 22 May 2023 17:20:31 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 17:10:55 GMT]]>@Christian-Ehrlicher `
Hi Christian ,

Thanks. Here it is.

code_text



greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17

# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
	configmanager.cpp \
    configmgrdialog.cpp \
    connectiondiagram.cpp \
    globalconfiguration.cpp \
    globallimits.cpp \
    jsoncreator.cpp\
    jsonparser.cpp \
    limiteditordialog.cpp \
	limitmanager.cpp \
    limitmgrdialog.cpp \
    loopcontrol.cpp \
    loopvariables.cpp \
    recallconfigdialog.cpp \
    recalllimitdialog.cpp \
    saveconfigdialog.cpp \
    savelimitdialog.cpp \
    stethoscope/stethoscopeclient.cpp \
    main.cpp \
    mainwindow.cpp \
	messageboxwrapper.cpp \
    morpheuspythonwrapper.cpp \
    pathmanager.cpp \
    pythonconsolewrapper.cpp \
    pythoninterpreter.cpp \
    sequencer.cpp \
    testconfiguration.cpp \
    testgroup.cpp \
    testlimit.cpp \
    testresult.cpp \
	testresultwrapper.cpp \
    testsetupdialog.cpp \
	testsetupwrapper.cpp \
    teststatuswrapper.cpp \
    testtreewrapper.cpp

HEADERS += \
    "C:/Program Files/HDF_Group/HDF5/1.14.1/include/hdf5.h" \
    configmanager.h \
    configmgrdialog.h \
    connectiondiagram.h \
    globalconfiguration.h \
    globallimits.h \
    jsoncreator.h\
    jsonparser.h \
    limiteditordialog.h \
	limitmanager.h \
    limitmgrdialog.h \
    loopcontrol.h \
    loopvariables.h \
    mainwindow.h \
	messageboxwrapper.h \
    morpheuspythonwrapper.h \
    pathmanager.h \
    pythonconsolewrapper.h \
    pythoninterpreter.h \
    recallconfigdialog.h \
    recalllimitdialog.h \
    saveconfigdialog.h \
    savelimitdialog.h \
    sequencer.h \
    sequencer_defs.h \
    sequencerinterface.h \
    testconfiguration.h \
    testgroup.h \
    testlimit.h \
    testresult.h \
	testresultwrapper.h \
    testsetupdialog.h \
	testsetupwrapper.h \
    teststatuswrapper.h \
    testtreewrapper.h \

FORMS += \
    configmgrdialog.ui \
    limiteditordialog.ui \
    limitmgrdialog.ui \
    mainwindow.ui \
    recallconfigdialog.ui \
    recalllimitdialog.ui \
    saveconfigdialog.ui \
    savelimitdialog.ui \
    testsetupdialog.ui

INCLUDEPATH += \
    "C:/Program Files/HDF_Group/HDF5/1.14.1/include" \
    C:/Users/142406/AppData/Local/Programs/Python/Python38/include \
    ../Shared\Includes \
    ../Shared\Interfaces \
    ../../morpheus/morpheus_dev/Lib/site-packages/pybind11/include \


DEFINES += \
    PYTHON_EXECUTABLE=C:/Python38 \
	QT_DLL

LIBS += \
  "C:/Users/142406/AppData/Local/Programs/Python/Python38/libs/python38.lib" \
  "C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5.lib"
  "C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_cpp.lib"
  "C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_hl.lib"
  "C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_hl_cpp.lib"
  "C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_hl_cpp.lib"
  "C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_tools.lib"
  "C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libaec.lib"
  "C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libszaec.lib"
  "C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libz.lib"




qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

DISTFILES +=

RESOURCES += \
    resources.qrc

win32:CONFIG(release, debug|release):LIBS += -L$$PWD/../Shared/Binaries/x64/Libraries/ -lQtObjectPropertyLib
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../Shared/Binaries/x64/Libraries/ -lQtObjectPropertyLibd

INCLUDEPATH += $$PWD/../Shared/Binaries/x64/Libraries
DEPENDPATH += $$PWD/../Shared/Binaries/x64/Libraries
]]>https://forum.qt.io/post/758987https://forum.qt.io/post/758987Mon, 22 May 2023 17:10:55 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 16:48:39 GMT]]>Ah, the \ are eaten by the forum software - please move such stuff into the code tags so it is shown unformatted.
I would take a look if the link line contains the hdf libs and maybe move them out into a directory without spaces.

]]>https://forum.qt.io/post/758986https://forum.qt.io/post/758986Mon, 22 May 2023 16:48:39 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 16:35:01 GMT]]>@Christian-Ehrlicher

Hi ,

Thanks.
Here is the complete .pro file :

QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17

You can make your code fail to compile if it uses deprecated APIs.

In order to do so, uncomment the following line.

#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0

SOURCES +=
configmanager.cpp
configmgrdialog.cpp
connectiondiagram.cpp
globalconfiguration.cpp
globallimits.cpp
jsoncreator.cpp
jsonparser.cpp
limiteditordialog.cpp
limitmanager.cpp
limitmgrdialog.cpp
loopcontrol.cpp
loopvariables.cpp
recallconfigdialog.cpp
recalllimitdialog.cpp
saveconfigdialog.cpp
savelimitdialog.cpp
stethoscope/stethoscopeclient.cpp
main.cpp
mainwindow.cpp
messageboxwrapper.cpp
morpheuspythonwrapper.cpp
pathmanager.cpp
pythonconsolewrapper.cpp
pythoninterpreter.cpp
sequencer.cpp
testconfiguration.cpp
testgroup.cpp
testlimit.cpp
testresult.cpp
testresultwrapper.cpp
testsetupdialog.cpp
testsetupwrapper.cpp
teststatuswrapper.cpp
testtreewrapper.cpp

HEADERS +=
"C:/Program Files/HDF_Group/HDF5/1.14.1/include/hdf5.h"
configmanager.h
configmgrdialog.h
connectiondiagram.h
globalconfiguration.h
globallimits.h
jsoncreator.h
jsonparser.h
limiteditordialog.h
limitmanager.h
limitmgrdialog.h
loopcontrol.h
loopvariables.h
mainwindow.h
messageboxwrapper.h
morpheuspythonwrapper.h
pathmanager.h
pythonconsolewrapper.h
pythoninterpreter.h
recallconfigdialog.h
recalllimitdialog.h
saveconfigdialog.h
savelimitdialog.h
sequencer.h
sequencer_defs.h
sequencerinterface.h
testconfiguration.h
testgroup.h
testlimit.h
testresult.h
testresultwrapper.h
testsetupdialog.h
testsetupwrapper.h
teststatuswrapper.h
testtreewrapper.h \

FORMS +=
configmgrdialog.ui
limiteditordialog.ui
limitmgrdialog.ui
mainwindow.ui
recallconfigdialog.ui
recalllimitdialog.ui
saveconfigdialog.ui
savelimitdialog.ui
testsetupdialog.ui

INCLUDEPATH +=
"C:/Program Files/HDF_Group/HDF5/1.14.1/include"
C:/Users/142406/AppData/Local/Programs/Python/Python38/include
../Shared\Includes
../Shared\Interfaces
../../morpheus/morpheus_dev/Lib/site-packages/pybind11/include \

DEFINES +=
PYTHON_EXECUTABLE=C:/Python38
QT_DLL

LIBS +=
-L"C:/Users/142406/AppData/Local/Programs/Python/Python38/libs"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_cpp.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_hl.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_hl_cpp.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_tools.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_f90cstub.lib" \

Default rules for deployment.

qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

DISTFILES +=

RESOURCES +=
resources.qrc

win32:CONFIG(release, debug|release):LIBS += -L$$PWD/../Shared/Binaries/x64/Libraries/ -lQtObjectPropertyLib
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../Shared/Binaries/x64/Libraries/ -lQtObjectPropertyLibd

INCLUDEPATH += $$PWD/../Shared/Binaries/x64/Libraries
DEPENDPATH += $$PWD/../Shared/Binaries/x64/Libraries

]]>https://forum.qt.io/post/758984https://forum.qt.io/post/758984Mon, 22 May 2023 16:35:01 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 16:31:48 GMT]]>@Rudresh said in Linker errors when HDF5 is being used:

LIBS +=
-L"C:/Users/142406/AppData/Local/Programs/Python/Python38/libs"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_cpp.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_hl.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_hl_cpp.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_tools.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_f90cstub.lib" \

really? I doubt qmake will accept it - please show the real content of your pro file - what you show here is wrong since it does not add anything to the LIBS variable.

]]>https://forum.qt.io/post/758983https://forum.qt.io/post/758983Mon, 22 May 2023 16:31:48 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 16:06:31 GMT]]>@JonB

Hi ,

Here is how I am trying to link hdf5 libs in .pro file :
LIBS +=
-L"C:/Users/142406/AppData/Local/Programs/Python/Python38/libs"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_cpp.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_hl.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_hl_cpp.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_tools.lib"
-L"C:/Program Files/HDF_Group/HDF5/1.14.1/lib/libhdf5_f90cstub.lib" \

]]>https://forum.qt.io/post/758982https://forum.qt.io/post/758982Mon, 22 May 2023 16:06:31 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 15:50:59 GMT]]>@giusdbg
Hi ,
Thanks.

Including this way gives another error :
QT += HDF5
error :
: error: Project ERROR: Unknown module(s) in QT: HDF5

]]>https://forum.qt.io/post/758979https://forum.qt.io/post/758979Mon, 22 May 2023 15:50:59 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 15:37:14 GMT]]>@Rudresh Most likely you didn't include the H5 libraries in your project.

Something like this, just for example

QT += .... hdf5

or

.... -lhdf5

]]>https://forum.qt.io/post/758978https://forum.qt.io/post/758978Mon, 22 May 2023 15:37:14 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 13:58:58 GMT]]>@Rudresh
@JonB said in Linker errors when HDF5 is being used:

If using HDF5 requires linking with a library show where you do that in your Qt project.

]]>https://forum.qt.io/post/758967https://forum.qt.io/post/758967Mon, 22 May 2023 13:58:58 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 13:47:39 GMT]]>@JonB
Hi ,
Thanks.

mainwindow.obj:-1: error: LNK2019: unresolved external symbol H5open referenced in function "public: __cdecl MainWindow::MainWindow(class QWidget *)" (??0MainWindow@@QEAA@PEAVQWidget@@@Z)

mainwindow.obj:-1: error: LNK2019: unresolved external symbol H5check_version referenced in function "public: __cdecl
MainWindow::MainWindow(class QWidget *)" (??0MainWindow@@QEAA@PEAVQWidget@@@Z)

mainwindow.obj:-1: error: LNK2019: unresolved external symbol "public: __cdecl H5::H5File::H5File(char const *,unsigned int,class

H5::FileCreatPropList const &,class H5::FileAccPropList const &)" (??0H5File@H5@@QEAA@PEBDIAEBVFileCreatPropList@1@AEBVFileAccPropList@1@@Z) referenced in function "public: __cdecl MainWindow::MainWindow(class QWidget *)" (??0MainWindow@@QEAA@PEAVQWidget@@@Z)

mainwindow.obj:-1: error: LNK2019: unresolved external symbol "public: static class H5::FileAccPropList const & const H5::FileAccPropList::DEFAULT" (?DEFAULT@FileAccPropList@H5@@2AEBV12@EB) referenced in function "public: __cdecl MainWindow::MainWindow(class QWidget *)" (??0MainWindow@@QEAA@PEAVQWidget@@@Z)

mainwindow.obj:-1: error: LNK2019: unresolved external symbol "public: virtual __cdecl H5::H5File::~H5File(void)" (??1H5File@H5@@UEAA@XZ) referenced in function "public: __cdecl MainWindow::MainWindow(class QWidget *)" (??0MainWindow@@QEAA@PEAVQWidget@@@Z)
release\MorpheusQt.exe:-1: error: LNK1120: 6 unresolved externals

mainwindow.obj:-1: error: LNK2019: unresolved external symbol "public: static class H5::FileCreatPropList const & const
H5::FileCreatPropList::DEFAULT" (?DEFAULT@FileCreatPropList@H5@@2AEBV12@EB) referenced in function "public: __cdecl MainWindow::MainWindow(class QWidget *)" (??0MainWindow@@QEAA@PEAVQWidget@@@Z)

]]>https://forum.qt.io/post/758962https://forum.qt.io/post/758962Mon, 22 May 2023 13:47:39 GMT<![CDATA[Reply to Linker errors when HDF5 is being used on Mon, 22 May 2023 12:54:14 GMT]]>@Rudresh
Can you please post an (probably the first) actual linker error message, not what you have "summarized" in your edit.

If using HDF5 requires linking with a library show where you do that in your Qt project.

]]>https://forum.qt.io/post/758957https://forum.qt.io/post/758957Mon, 22 May 2023 12:54:14 GMT