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Including MQTT wrapper for mosquitto library on windows

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  • S starkm42

    @Dean21 i am thinking this is because you forgot to add DEPENDPATH

    source: https://doc.qt.io/qt-6/qmake-variable-reference.html#dependpath

    Specifies a list of directories for qmake to scan, to resolve dependencies. This variable is used when qmake crawls through the header files that you #include in your source code.

    when using 3rd party libraries, this method is much more easy and less error prone. https://doc.qt.io/qtcreator/creator-project-qmake-libraries.html

    Qt modifies your qmake file for you.

    D Offline
    D Offline
    Dean21
    wrote on last edited by
    #10

    @starkm42 Thanks for the reply, that seemed to work to remove a lot of the linking errors but not I get this one error I havent seen before

    :-1: error: No rule to make target 'C:/Users/deanm/Desktop/Uni_Year_3/3rd_year_project/Microscope_GUI_V2/Microscope_GUI/../../../../../../../Program Files/mosquitto/devel/libmosquittoppd.a', needed by 'debug/Microscope_GUI.exe'. Stop.

    jsulmJ 1 Reply Last reply
    0
    • D Dean21

      @starkm42 Thanks for the reply, that seemed to work to remove a lot of the linking errors but not I get this one error I havent seen before

      :-1: error: No rule to make target 'C:/Users/deanm/Desktop/Uni_Year_3/3rd_year_project/Microscope_GUI_V2/Microscope_GUI/../../../../../../../Program Files/mosquitto/devel/libmosquittoppd.a', needed by 'debug/Microscope_GUI.exe'. Stop.

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #11

      @Dean21 How does your pro file look like now?

      https://forum.qt.io/topic/113070/qt-code-of-conduct

      D 1 Reply Last reply
      0
      • jsulmJ jsulm

        @Dean21 I think on Windows you need to link differently (see https://doc.qt.io/qt-6/qmake-variable-reference.html#libs):

        unix:LIBS += -L/usr/local/lib -lmath
win32:LIBS += c:/mylibs/math.lib

        So, you need to use a path to the *.lib file of the library.

        "the kit used when I made this project says it is Desktop Qt 6.4.1 MinGW 64-bit for the compiler" - the question is - what compiler was used to build that library? If MSVC was used it is not going to work. You need a MinGW build of the lib.

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        D Offline
        Dean21
        wrote on last edited by
        #12

        @jsulm I am not sure what compiler was used to compile the library, but as I have had this working in Qt creator before on linux with the same library I assumed it would work fine on windows

        S 1 Reply Last reply
        0
        • jsulmJ jsulm

          @Dean21 How does your pro file look like now?

          D Offline
          D Offline
          Dean21
          wrote on last edited by
          #13

          @jsulm This is now my .pro file.

          QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17

#QMAKE_CXXFLAGS += -lmosquitto

#INCLUDEPATH += "C:/Program Files/mosquitto/devel"

#LIBS += -L"C:/Program Files/mosquitto/devel" -lmosquittopp

# 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 += \
    QMMqttClient.cpp \
    main.cpp \
    widget.cpp \

HEADERS += \
    QMMqttClient.h \
    widget.h

FORMS += \
    widget.ui

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

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittopp
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittoppd
else:unix: LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittopp

INCLUDEPATH += $$PWD/'../../../../../../../Program Files/mosquitto/devel'
DEPENDPATH += $$PWD/'../../../../../../../Program Files/mosquitto/devel'

win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittopp.a'
else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittoppd.a'
else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/mosquittopp.lib'
else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/mosquittoppd.lib'
else:unix: PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittopp.a'
          jsulmJ 1 Reply Last reply
          0
          • D Dean21

            @jsulm This is now my .pro file.

            QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17

#QMAKE_CXXFLAGS += -lmosquitto

#INCLUDEPATH += "C:/Program Files/mosquitto/devel"

#LIBS += -L"C:/Program Files/mosquitto/devel" -lmosquittopp

# 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 += \
    QMMqttClient.cpp \
    main.cpp \
    widget.cpp \

HEADERS += \
    QMMqttClient.h \
    widget.h

FORMS += \
    widget.ui

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

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittopp
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittoppd
else:unix: LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittopp

INCLUDEPATH += $$PWD/'../../../../../../../Program Files/mosquitto/devel'
DEPENDPATH += $$PWD/'../../../../../../../Program Files/mosquitto/devel'

win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittopp.a'
else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittoppd.a'
else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/mosquittopp.lib'
else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/mosquittoppd.lib'
else:unix: PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittopp.a'
            jsulmJ Offline
            jsulmJ Offline
            jsulm
            Lifetime Qt Champion
            wrote on last edited by
            #14

            @Dean21 said in Including MQTT wrapper for mosquitto library on windows:

            else:unix: PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittopp.a'

            Why do you have this?
            Your LIBS for Windows are still wrong.

            https://forum.qt.io/topic/113070/qt-code-of-conduct

            D 1 Reply Last reply
            0
            • jsulmJ jsulm

              @Dean21 said in Including MQTT wrapper for mosquitto library on windows:

              else:unix: PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittopp.a'

              Why do you have this?
              Your LIBS for Windows are still wrong.

              D Offline
              D Offline
              Dean21
              wrote on last edited by
              #15

              @jsulm Sorry forgot to untick linux and mac boxes, here is the .pro file, it still has the same error though.

              QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17

QMAKE_CXXFLAGS += -lmosquitto

INCLUDEPATH += "C:/Program Files/mosquitto/devel"

LIBS += -L"C:/Program Files/mosquitto/devel" -lmosquittopp

# 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 += \
    QMMqttClient.cpp \
    main.cpp \
    widget.cpp \

HEADERS += \
    QMMqttClient.h \
    widget.h

FORMS += \
    widget.ui

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

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittopp
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittoppd

INCLUDEPATH += $$PWD/'../../../../../../../Program Files/mosquitto/devel'
DEPENDPATH += $$PWD/'../../../../../../../Program Files/mosquitto/devel'

win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittopp.a'
else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittoppd.a'
else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/mosquittopp.lib'
else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/mosquittoppd.lib'

              Error: :-1: error: No rule to make target 'C:/Users/deanm/Desktop/Uni_Year_3/3rd_year_project/Microscope_GUI_V2/Microscope_GUI/../../../../../../../Program Files/mosquitto/devel/libmosquittoppd.a', needed by 'debug/Microscope_GUI.exe'. Stop.

              jsulmJ 1 Reply Last reply
              0
              • D Dean21

                @jsulm Sorry forgot to untick linux and mac boxes, here is the .pro file, it still has the same error though.

                QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17

QMAKE_CXXFLAGS += -lmosquitto

INCLUDEPATH += "C:/Program Files/mosquitto/devel"

LIBS += -L"C:/Program Files/mosquitto/devel" -lmosquittopp

# 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 += \
    QMMqttClient.cpp \
    main.cpp \
    widget.cpp \

HEADERS += \
    QMMqttClient.h \
    widget.h

FORMS += \
    widget.ui

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

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittopp
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittoppd

INCLUDEPATH += $$PWD/'../../../../../../../Program Files/mosquitto/devel'
DEPENDPATH += $$PWD/'../../../../../../../Program Files/mosquitto/devel'

win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittopp.a'
else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittoppd.a'
else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/mosquittopp.lib'
else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/mosquittoppd.lib'

                Error: :-1: error: No rule to make target 'C:/Users/deanm/Desktop/Uni_Year_3/3rd_year_project/Microscope_GUI_V2/Microscope_GUI/../../../../../../../Program Files/mosquitto/devel/libmosquittoppd.a', needed by 'debug/Microscope_GUI.exe'. Stop.

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #16

                @Dean21 said in Including MQTT wrapper for mosquitto library on windows:

                QMAKE_CXXFLAGS += -lmosquitto

                Why?

                And again: your LIBS for Windows are wrong!

                I also don't know why you have static versions if you want to link dynamically:

                else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittoppd.a'

                Remove alls these *.a stuff.

                https://forum.qt.io/topic/113070/qt-code-of-conduct

                D 1 Reply Last reply
                0
                • jsulmJ jsulm

                  @Dean21 said in Including MQTT wrapper for mosquitto library on windows:

                  QMAKE_CXXFLAGS += -lmosquitto

                  Why?

                  And again: your LIBS for Windows are wrong!

                  I also don't know why you have static versions if you want to link dynamically:

                  else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/'../../../../../../../Program Files/mosquitto/devel/libmosquittoppd.a'

                  Remove alls these *.a stuff.

                  D Offline
                  D Offline
                  Dean21
                  wrote on last edited by
                  #17

                  @jsulm My bad, this was done with dynamic and this is what was generated in the .pro file now.

                  QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17

QMAKE_CXXFLAGS += -lmosquitto

INCLUDEPATH += "C:/Program Files/mosquitto/devel"

LIBS += -L"C:/Program Files/mosquitto/devel" -lmosquittopp

# 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 += \
    QMMqttClient.cpp \
    main.cpp \
    widget.cpp \

HEADERS += \
    QMMqttClient.h \
    widget.h

FORMS += \
    widget.ui

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

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittopp
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/'../../../../../../../Program Files/mosquitto/devel/' -lmosquittoppd

INCLUDEPATH += $$PWD/'../../../../../../../Program Files/mosquitto/devel'
DEPENDPATH += $$PWD/'../../../../../../../Program Files/mosquitto/devel'

                  This now gives these errors:

                  :-1: error: cannot find -lmosquittoppd
                  :-1: error: cannot find -lmosquittod
                  :-1: error: collect2.exe: error: ld returned 1 exit status

                  1 Reply Last reply
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                  • D Dean21

                    @jsulm I am not sure what compiler was used to compile the library, but as I have had this working in Qt creator before on linux with the same library I assumed it would work fine on windows

                    S Offline
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                    starkm42
                    wrote on last edited by starkm42
                    #18

                    @Dean21 wait are you using the same compiled library that you used for linux on windows without recompiling or getting new binaries compiled for windows ?

                    @Dean21 said in Including MQTT wrapper for mosquitto library on windows:

                    @jsulm I am not sure what compiler was used to compile the library, but as I have had this working in Qt creator before on linux with the same library I assumed it would work fine on windows

                    D 1 Reply Last reply
                    0
                    • S starkm42

                      @Dean21 wait are you using the same compiled library that you used for linux on windows without recompiling or getting new binaries compiled for windows ?

                      @Dean21 said in Including MQTT wrapper for mosquitto library on windows:

                      @jsulm I am not sure what compiler was used to compile the library, but as I have had this working in Qt creator before on linux with the same library I assumed it would work fine on windows

                      D Offline
                      D Offline
                      Dean21
                      wrote on last edited by
                      #19

                      @starkm42 No, i just redownloaded the library from the website and set it up to start with to make sure it was working before i tried to use it in qt

                      1 Reply Last reply
                      0
                      • D Offline
                        D Offline
                        Dean21
                        wrote on last edited by
                        #20

                        I just re-added the library, but removed the tickbox for "add d suffix for debug", and that removes the errors about finding -mosquitoppd, but now I have all the same linker errors again.

                        S 1 Reply Last reply
                        0
                        • D Dean21

                          I just re-added the library, but removed the tickbox for "add d suffix for debug", and that removes the errors about finding -mosquitoppd, but now I have all the same linker errors again.

                          S Offline
                          S Offline
                          starkm42
                          wrote on last edited by starkm42
                          #21

                          @Dean21

                          for adding a test library called NemaTode, after following the guide https://doc.qt.io/qtcreator/creator-project-qmake-libraries.html

                          this is what my qmake looks like

                          QT       += core gui positioning

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 += \
    gpssource.cpp \
    main.cpp \
    mainwindow.cpp

HEADERS += \
    gpssource.h \
    mainwindow.h

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

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../../third_party_libs/NemaTode/lib/ -lNemaTode
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../../third_party_libs/NemaTode/lib/ -lNemaTode
else:unix: LIBS += -L$$PWD/../../third_party_libs/NemaTode/lib/ -lNemaTode

INCLUDEPATH += $$PWD/../../third_party_libs/NemaTode/include/nmeaparse
DEPENDPATH += $$PWD/../../third_party_libs/NemaTode/include/nmeaparse

FORMS += \
    GPSCordinatesDisplay.ui

                          mine does not have LIB or INCLUDEPATH
                          try removing all manual additions, just sticking to the guide would be my suggestion.

                          D 1 Reply Last reply
                          0
                          • S starkm42

                            @Dean21

                            for adding a test library called NemaTode, after following the guide https://doc.qt.io/qtcreator/creator-project-qmake-libraries.html

                            this is what my qmake looks like

                            QT       += core gui positioning

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 += \
    gpssource.cpp \
    main.cpp \
    mainwindow.cpp

HEADERS += \
    gpssource.h \
    mainwindow.h

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

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../../third_party_libs/NemaTode/lib/ -lNemaTode
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../../third_party_libs/NemaTode/lib/ -lNemaTode
else:unix: LIBS += -L$$PWD/../../third_party_libs/NemaTode/lib/ -lNemaTode

INCLUDEPATH += $$PWD/../../third_party_libs/NemaTode/include/nmeaparse
DEPENDPATH += $$PWD/../../third_party_libs/NemaTode/include/nmeaparse

FORMS += \
    GPSCordinatesDisplay.ui

                            mine does not have LIB or INCLUDEPATH
                            try removing all manual additions, just sticking to the guide would be my suggestion.

                            D Offline
                            D Offline
                            Dean21
                            wrote on last edited by
                            #22

                            @starkm42 Thanks for the reply, the issue was to do with the fact mosquitto was compiled with a different library. To avoid this I am just going to run a ubuntu VM Thanks everyone for the help.

                            1 Reply Last reply
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