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Cannot recognize header .h file from external dynamic library

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  • I Offline
    I Offline
    ItzMeJP
    wrote on last edited by
    #3

    The is my directory tree

    mimic_grasping_gui/
    ├─ mimic_grasping_gui.pro
    ├─ forms/
    │ ├─ mainwindow.ui
    │ ├─ [...]
    ├─ include/
    │ ├─ mainwindow.h
    │ ├─ [...]
    ├─ libs/
    │ ├─ libmimic_grasping_server.so
    ├─ src/
    │ ├─main.cpp
    │ ├─ [...]

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #4

      @ItzMeJP said in Cannot recognize header .h file from external dynamic library:

      mimic_grasping_server.h

      You did not say where exactly that file is.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      1
      • JoeCFDJ Offline
        JoeCFDJ Offline
        JoeCFD
        wrote on last edited by JoeCFD
        #5

        @ItzMeJP said in Cannot recognize header .h file from external dynamic library:

        INCLUDE_FOLDER

        From INCLUDEPATH += $$PWD/libs, it can be assumed that the header files are in $$PWD/libs.
        I guess you may do this
        #include "mimic_grasping_server.h"

        I 1 Reply Last reply
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        • I Offline
          I Offline
          ItzMeJP
          wrote on last edited by ItzMeJP
          #6

          @SGaist I would like to include the header file from the dynamic lib (i.e. lmimic_grasping_server).

          It should be <mimic_grasping_server/mimic_grasping_server.h>. Is there any other way to perform this include?

          My dynamic lib was created by using the CMAKE file below:

          cmake_minimum_required(VERSION 3.19)
          project(mimic_grasping_server
                  VERSION 16.06.2021
                  DESCRIPTION
                  "Mimic grasping server API to C++")
          
          set(CMAKE_CXX_STANDARD 17)
          set(SUBDIR_LIBS_PATH libs)
          
          #External packages
          find_package(Eigen3 REQUIRED) # To matrix operations
          find_package(Boost REQUIRED COMPONENTS system thread timer) # Multithreading
          
          #Static Libs subdirectories
          add_subdirectory(${SUBDIR_LIBS_PATH}/SimpleSerialInterface)
          set(SIMPLE_SERIAL_INCLUDE_DIR libs/SimpleSerialInterface/include/)
          
          ## Specify additional locations of header files
          ## Your package locations should be listed before other locations
          include_directories(
                  include
                  ${SIMPLE_SERIAL_INCLUDE_DIR}
                  ${Eigen3_INCLUDE_DIRS}
                  ${BOOST_INCLUDE_DIRS}
          )
          
          ## Declare a C++ library
          add_library(mimic_grasping_server SHARED
                      src/mimic_grasping_server.cpp
                      src/tool_firmware_interface.cpp
                  )
          
          set_target_properties(mimic_grasping_server PROPERTIES
                  VERSION ${PROJECT_VERSION}
                  SOVERSION 0
                  )
          
          ## Set dependencies of the library
          target_link_libraries(mimic_grasping_server
                  simple_serial
                  ${BOOST_LIBRARIES}
                  ${CMAKE_THREAD_LIBS_INIT}
                  ${EIGEN_LIBRARIES}
                  Boost::thread
                  Boost::timer
                  jsoncpp
                  )
          
          
          
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          • JoeCFDJ JoeCFD

            @ItzMeJP said in Cannot recognize header .h file from external dynamic library:

            INCLUDE_FOLDER

            From INCLUDEPATH += $$PWD/libs, it can be assumed that the header files are in $$PWD/libs.
            I guess you may do this
            #include "mimic_grasping_server.h"

            I Offline
            I Offline
            ItzMeJP
            wrote on last edited by
            #7

            @JoeCFD said in Cannot recognize header .h file from external dynamic library:

            @ItzMeJP said in Cannot recognize header .h file from external dynamic library:

            INCLUDE_FOLDER

            From INCLUDEPATH += $$PWD/libs, it can be assumed that the header files are in $$PWD/libs.
            I guess you may do this
            #include "mimic_grasping_server.h"

            @JoeCFD I already try this one, even though #include "mimic_grasping_server/mimic_grasping_server.h". None of these worked.

            JoeCFDJ 1 Reply Last reply
            0
            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #8

              At the risk of repeating myself: where is that header file located on your hard drive exactly ?

              From your mimic_grasping_gui project structure, it does not seem to be in there, correct ?

              If so, where exactly is it ? Depending on that answer, you'll have to adjust the INCLUDEPATH variable content.

              By the way, why are you putting the library itself in your project sources ?

              On an unrelated note, since you are already using cmake for your library, why not also for your GUI project ?

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

              I 1 Reply Last reply
              0
              • I ItzMeJP

                @JoeCFD said in Cannot recognize header .h file from external dynamic library:

                @ItzMeJP said in Cannot recognize header .h file from external dynamic library:

                INCLUDE_FOLDER

                From INCLUDEPATH += $$PWD/libs, it can be assumed that the header files are in $$PWD/libs.
                I guess you may do this
                #include "mimic_grasping_server.h"

                @JoeCFD I already try this one, even though #include "mimic_grasping_server/mimic_grasping_server.h". None of these worked.

                JoeCFDJ Offline
                JoeCFDJ Offline
                JoeCFD
                wrote on last edited by
                #9

                @ItzMeJP List your Makefile here generated with .pro.

                I 1 Reply Last reply
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                • JoeCFDJ JoeCFD

                  @ItzMeJP List your Makefile here generated with .pro.

                  I Offline
                  I Offline
                  ItzMeJP
                  wrote on last edited by
                  #10

                  @JoeCFD said in Cannot recognize header .h file from external dynamic library:

                  @ItzMeJP List your Makefile here generated with .pro.

                  Sorry I cannot upload the file here (not even attach the file). I do not have enough reputation and privileges. Thus I shared through this link:

                  https://drive.google.com/file/d/1VptBnHB0d_YPnofJUKMHfAWquP60sQBj/view?usp=sharing

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                  0
                  • SGaistS SGaist

                    At the risk of repeating myself: where is that header file located on your hard drive exactly ?

                    From your mimic_grasping_gui project structure, it does not seem to be in there, correct ?

                    If so, where exactly is it ? Depending on that answer, you'll have to adjust the INCLUDEPATH variable content.

                    By the way, why are you putting the library itself in your project sources ?

                    On an unrelated note, since you are already using cmake for your library, why not also for your GUI project ?

                    I Offline
                    I Offline
                    ItzMeJP
                    wrote on last edited by ItzMeJP
                    #11

                    @SGaist said in Cannot recognize header .h file from external dynamic library:

                    At the risk of repeating myself: where is that header file located on your hard drive exactly ?

                    There are no ".h". It is a dynamic lib import. Look at the case of Boost Thread lib. I added that as " unix|win32: LIBS += -lboost_thread " and the main code can recognize its include as "#include <boost/thread.hpp>"

                    From your mimic_grasping_gui project structure, it does not seem to be in there, correct ?

                    This is a folder to place all external APIs. Thus, when changing PC, I know exactly all .so prerequisites.

                    By the way, why are you putting the library itself in your project sources ?
                    On an unrelated note, since you are already using cmake for your library, why not also for your GUI project ?

                    I don't want to. My API is used in different systems and is programmed in pure C++. The GUI is just one of them.

                    JoeCFDJ 1 Reply Last reply
                    0
                    • I ItzMeJP

                      @SGaist said in Cannot recognize header .h file from external dynamic library:

                      At the risk of repeating myself: where is that header file located on your hard drive exactly ?

                      There are no ".h". It is a dynamic lib import. Look at the case of Boost Thread lib. I added that as " unix|win32: LIBS += -lboost_thread " and the main code can recognize its include as "#include <boost/thread.hpp>"

                      From your mimic_grasping_gui project structure, it does not seem to be in there, correct ?

                      This is a folder to place all external APIs. Thus, when changing PC, I know exactly all .so prerequisites.

                      By the way, why are you putting the library itself in your project sources ?
                      On an unrelated note, since you are already using cmake for your library, why not also for your GUI project ?

                      I don't want to. My API is used in different systems and is programmed in pure C++. The GUI is just one of them.

                      JoeCFDJ Offline
                      JoeCFDJ Offline
                      JoeCFD
                      wrote on last edited by JoeCFD
                      #12

                      @ItzMeJP
                      You are using relative path for include path.
                      INCPATH = -I../mimic_grasping_3 -I. -I../mimic_grasping_3/libs -I../../Qt/5.15.2/gcc_64/include

                      Your lib path is not. You make them consistent. You will be all right. Could be your PWD setting is not right.
                      LIBS = $(SUBLIBS) -lboost_thread -L/home/joaopedro/qt_ws/mimic_grasping_3/libs/ -lmimic_grasping_server /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt53DExtras.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt53DRender.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt53DInput.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt53DLogic.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt53DCore.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt5Gamepad.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt5Widgets.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt5Gui.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt5Network.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt5Core.so -lGL -lpthread

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                      • JoeCFDJ Offline
                        JoeCFDJ Offline
                        JoeCFD
                        wrote on last edited by
                        #13

                        INCLUDEPATH += $$absolute_path($$PWD)/libs
                        DEPENDPATH += $$absolute_path($$PWD)/libs

                        check your Makefile to see if it helps.

                        I 1 Reply Last reply
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                        • JoeCFDJ JoeCFD

                          @ItzMeJP
                          You are using relative path for include path.
                          INCPATH = -I../mimic_grasping_3 -I. -I../mimic_grasping_3/libs -I../../Qt/5.15.2/gcc_64/include

                          Your lib path is not. You make them consistent. You will be all right. Could be your PWD setting is not right.
                          LIBS = $(SUBLIBS) -lboost_thread -L/home/joaopedro/qt_ws/mimic_grasping_3/libs/ -lmimic_grasping_server /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt53DExtras.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt53DRender.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt53DInput.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt53DLogic.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt53DCore.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt5Gamepad.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt5Widgets.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt5Gui.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt5Network.so /home/joaopedro/Qt/5.15.2/gcc_64/lib/libQt5Core.so -lGL -lpthread

                          I Offline
                          I Offline
                          ItzMeJP
                          wrote on last edited by
                          #14
                          This post is deleted!
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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #15

                            You had it working with boost because it has likely been installed using your system's package manager and if not, it's located in one of the default paths looked for by the compiler.

                            There's not automagical header include path discovery when you only provide the library.

                            Interested in AI ? www.idiap.ch
                            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                            I 1 Reply Last reply
                            1
                            • JoeCFDJ JoeCFD

                              INCLUDEPATH += $$absolute_path($$PWD)/libs
                              DEPENDPATH += $$absolute_path($$PWD)/libs

                              check your Makefile to see if it helps.

                              I Offline
                              I Offline
                              ItzMeJP
                              wrote on last edited by
                              #16

                              @JoeCFD No, it does not help. The MakeFile still the same...

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                              • SGaistS SGaist

                                You had it working with boost because it has likely been installed using your system's package manager and if not, it's located in one of the default paths looked for by the compiler.

                                There's not automagical header include path discovery when you only provide the library.

                                I Offline
                                I Offline
                                ItzMeJP
                                wrote on last edited by
                                #17

                                @SGaist said in Cannot recognize header .h file from external dynamic library:

                                You had it working with boost because it has likely been installed using your system's package manager and if not, it's located in one of the default paths looked for by the compiler.

                                There's not automagical header include path discovery when you only provide the library.

                                Thus, what is the recommended procedure to generate the dynamic lib and import it to Qt?

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                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #18

                                  There's nothing special.

                                  Every library has a set of one or more headers they provide along the library file itself.

                                  There are standard locations to put them and if yours is not in one of them then you simply have to add the path to them to INCLUDEPATH.

                                  Interested in AI ? www.idiap.ch
                                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                  • JoeCFDJ Offline
                                    JoeCFDJ Offline
                                    JoeCFD
                                    wrote on last edited by
                                    #19

                                    replace -I../mimic_grasping_3/libs of INCPATH in Makefile with -I/home/joaopedro/qt_ws/mimic_grasping_3/libs manually. Save it and then run make to see if it works.
                                    if not, run
                                    locate mimic_grasping_server.h
                                    to see where the file is located.

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