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Environment Variable

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  • M Offline
    M Offline
    michaeldev
    wrote on last edited by
    #1

    Hi!

    I try use bullet physics engine. I made lib and dll files.
    There is string BULLET_PATH=$(BULLET_PATH_ENVIRONMENT) in pri-file.
    BULLET_PATH_ENVIRONMENT - set correctly (C:\bullet3).
    And I have error "Project ERROR: bullet development package not found".
    What am I doing wrong?

    1 Reply Last reply
    0
    • mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by mrjj
      #2

      Hi
      You have to provide a bit more of information.

      What are you trying to build when you get that error`?

      Are you using cmake or qmake ?
      and what compiler.

      1 Reply Last reply
      4
      • M Offline
        M Offline
        michaeldev
        wrote on last edited by
        #3
        This post is deleted!
        1 Reply Last reply
        0
        • G Offline
          G Offline
          Guti
          wrote on last edited by Guti
          #4

          hi,
          i am having the same issue (win10_x64)
          Qt Creator 4.9.1

          did set the BULLET_PATH_ENVIRONMENT to "C:\bulletphysics\bullet3"

          i am just trying to figure out the Qt 3D and bullet physics engine in order to get started with my own project

          currently i am trying to compile this simulator:
          https://github.com/patrickelectric/Qt3D-Konqi-Simulator

          therefore I checked out this repository
          https://bitbucket.org/csaga77/bullet-physics-qml-plugin/src/master/
          into this folder:
          Qt3D-Konqi-Simulator\lib\bullet-physics-qml-plugin

          and here you can see my build settings
          0_1560454689842_build settings.JPG

          I am also getting the error message "bullet development package not found"

          Can someone help me out?

          S 1 Reply Last reply
          0
          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #5

            Hi and welcome to devnet,

            Where did you set that environnement variable ?
            Does it appear in your projet build and run environnements ?

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

            G 1 Reply Last reply
            1
            • SGaistS SGaist

              Hi and welcome to devnet,

              Where did you set that environnement variable ?
              Does it appear in your projet build and run environnements ?

              G Offline
              G Offline
              Guti
              wrote on last edited by Guti
              #6

              @SGaist thank you for your quick response
              I set the environment variable in the System variables via the System Properties

              0_1560496388130_environment variables.JPG

              it appears in the Build Environment:
              0_1560496844520_Build Environment.JPG

              the Run Environment uses the Build Environment - so it also appears there

              aha_1980A 1 Reply Last reply
              0
              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #7

                Did you base your project on this .pri file ?

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

                1 Reply Last reply
                2
                • G Guti

                  @SGaist thank you for your quick response
                  I set the environment variable in the System variables via the System Properties

                  0_1560496388130_environment variables.JPG

                  it appears in the Build Environment:
                  0_1560496844520_Build Environment.JPG

                  the Run Environment uses the Build Environment - so it also appears there

                  aha_1980A Offline
                  aha_1980A Offline
                  aha_1980
                  Lifetime Qt Champion
                  wrote on last edited by aha_1980
                  #8

                  @Guti try to use forward slashed in paths.

                  \b is the backspace sequence and likely to fail.

                  Regards

                  Qt has to stay free or it will die.

                  1 Reply Last reply
                  2
                  • G Offline
                    G Offline
                    Guti
                    wrote on last edited by
                    #9

                    thanks for your reply, but i stopped trying to compile this example
                    i checked out the bullet source code https://github.com/bulletphysics/bullet3
                    and compiled as described in the readme section: Build instructions for Bullet using premake.

                    • adapt python path in the .bat script file
                    • compiled it in MS Visual Studio

                    -> then the lib files were generated into the new folder

                    unfortunately I could not comile the example projects (i.e. HelloWorld) in Qt by linking the generated lib files
                    i'm not sure if this was because of compiler differencies in MSVS 2019 and Qt or just because of linking failures on my side...

                    Anyways, now we do it like here:
                    also include the needed .cpp files, not the best approach and it throws lots of warnings, but it's working...

                    my .proj file for the BulletHelloWorld example:

                    QT -= gui
                    
                    CONFIG += c++11 console
                    CONFIG -= app_bundle
                    
                    # The following define makes your compiler emit warnings if you use
                    # any Qt feature that has been marked deprecated (the exact warnings
                    # depend on your compiler). Please consult the documentation of the
                    # deprecated API in order to know how to port your code away from it.
                    DEFINES += QT_DEPRECATED_WARNINGS
                    
                    # You can also make your code fail to compile if it uses deprecated APIs.
                    # In order to do so, uncomment the following line.
                    # You can also select to disable deprecated APIs only up to a certain version of Qt.
                    #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
                    
                    SOURCES += \
                            main.cpp \
                            $$PWD\bullet3\src\BulletCollision/BroadphaseCollision/*.cpp \
                            $$PWD\bullet3\src\BulletCollision/CollisionDispatch/*.cpp \
                            $$PWD\bullet3\src\BulletCollision/CollisionShapes/*.cpp \
                            $$PWD\bullet3\src\BulletCollision/Gimpact/*.cpp \
                            $$PWD\bullet3\src\BulletCollision/NarrowPhaseCollision/*.cpp \
                            $$PWD\bullet3\src\BulletDynamics/Character/*.cpp \
                            $$PWD\bullet3\src\BulletDynamics/ConstraintSolver/*.cpp \
                            $$PWD\bullet3\src\BulletDynamics/Dynamics/*.cpp \
                            $$PWD\bullet3\src\BulletDynamics/Vehicle/*.cpp \
                            $$PWD\bullet3\src\LinearMath/*.cpp
                    
                    HEADERS += \
                        $$PWD\bullet3\src\BulletCollision/BroadphaseCollision/*.h \
                        $$PWD\bullet3\src\BulletCollision/CollisionDispatch/*.h \
                        $$PWD\bullet3\src\BulletCollision/CollisionShapes/*.h \
                        $$PWD\bullet3\src\BulletCollision/Gimpact/*.h \
                        $$PWD\bullet3\src\BulletCollision/NarrowPhaseCollision/*.h \
                        $$PWD\bullet3\src\BulletDynamics/Character/*.h \
                        $$PWD\bullet3\src\BulletDynamics/ConstraintSolver/*.h \
                        $$PWD\bullet3\src\BulletDynamics/Dynamics/*.h \
                        $$PWD\bullet3\src\BulletDynamics/Vehicle/*.h \
                        $$PWD\bullet3\src\LinearMath/*.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: LIBS += -L$$PWD/bullet3/libs/ -lBulletDynamics_vs2010_x64_release -lBulletCollision_vs2010_x64_release -lLinearMath_vs2010_x64_release
                    
                    INCLUDEPATH += $$PWD/bullet3/src
                    DEPENDPATH += $$PWD/bullet3/src
                    
                    #win32:!win32-g++: PRE_TARGETDEPS += $$PWD/bullet3/libs/BulletDynamics_vs2010_x64_release.lib
                    
                    

                    unfortunately I can not upload the whole zipped project (~5MB), but I just copied the bullet3 folder from the repository into my Qt project

                    aha_1980A 1 Reply Last reply
                    0
                    • G Guti

                      thanks for your reply, but i stopped trying to compile this example
                      i checked out the bullet source code https://github.com/bulletphysics/bullet3
                      and compiled as described in the readme section: Build instructions for Bullet using premake.

                      • adapt python path in the .bat script file
                      • compiled it in MS Visual Studio

                      -> then the lib files were generated into the new folder

                      unfortunately I could not comile the example projects (i.e. HelloWorld) in Qt by linking the generated lib files
                      i'm not sure if this was because of compiler differencies in MSVS 2019 and Qt or just because of linking failures on my side...

                      Anyways, now we do it like here:
                      also include the needed .cpp files, not the best approach and it throws lots of warnings, but it's working...

                      my .proj file for the BulletHelloWorld example:

                      QT -= gui
                      
                      CONFIG += c++11 console
                      CONFIG -= app_bundle
                      
                      # The following define makes your compiler emit warnings if you use
                      # any Qt feature that has been marked deprecated (the exact warnings
                      # depend on your compiler). Please consult the documentation of the
                      # deprecated API in order to know how to port your code away from it.
                      DEFINES += QT_DEPRECATED_WARNINGS
                      
                      # You can also make your code fail to compile if it uses deprecated APIs.
                      # In order to do so, uncomment the following line.
                      # You can also select to disable deprecated APIs only up to a certain version of Qt.
                      #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
                      
                      SOURCES += \
                              main.cpp \
                              $$PWD\bullet3\src\BulletCollision/BroadphaseCollision/*.cpp \
                              $$PWD\bullet3\src\BulletCollision/CollisionDispatch/*.cpp \
                              $$PWD\bullet3\src\BulletCollision/CollisionShapes/*.cpp \
                              $$PWD\bullet3\src\BulletCollision/Gimpact/*.cpp \
                              $$PWD\bullet3\src\BulletCollision/NarrowPhaseCollision/*.cpp \
                              $$PWD\bullet3\src\BulletDynamics/Character/*.cpp \
                              $$PWD\bullet3\src\BulletDynamics/ConstraintSolver/*.cpp \
                              $$PWD\bullet3\src\BulletDynamics/Dynamics/*.cpp \
                              $$PWD\bullet3\src\BulletDynamics/Vehicle/*.cpp \
                              $$PWD\bullet3\src\LinearMath/*.cpp
                      
                      HEADERS += \
                          $$PWD\bullet3\src\BulletCollision/BroadphaseCollision/*.h \
                          $$PWD\bullet3\src\BulletCollision/CollisionDispatch/*.h \
                          $$PWD\bullet3\src\BulletCollision/CollisionShapes/*.h \
                          $$PWD\bullet3\src\BulletCollision/Gimpact/*.h \
                          $$PWD\bullet3\src\BulletCollision/NarrowPhaseCollision/*.h \
                          $$PWD\bullet3\src\BulletDynamics/Character/*.h \
                          $$PWD\bullet3\src\BulletDynamics/ConstraintSolver/*.h \
                          $$PWD\bullet3\src\BulletDynamics/Dynamics/*.h \
                          $$PWD\bullet3\src\BulletDynamics/Vehicle/*.h \
                          $$PWD\bullet3\src\LinearMath/*.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: LIBS += -L$$PWD/bullet3/libs/ -lBulletDynamics_vs2010_x64_release -lBulletCollision_vs2010_x64_release -lLinearMath_vs2010_x64_release
                      
                      INCLUDEPATH += $$PWD/bullet3/src
                      DEPENDPATH += $$PWD/bullet3/src
                      
                      #win32:!win32-g++: PRE_TARGETDEPS += $$PWD/bullet3/libs/BulletDynamics_vs2010_x64_release.lib
                      
                      

                      unfortunately I can not upload the whole zipped project (~5MB), but I just copied the bullet3 folder from the repository into my Qt project

                      aha_1980A Offline
                      aha_1980A Offline
                      aha_1980
                      Lifetime Qt Champion
                      wrote on last edited by
                      #10

                      @Guti

                      $$PWD\bullet3\src\BulletCollision/BroadphaseCollision/*.cpp

                      Wrong. Path separator is forward slash in qmake. And as already said above, \b is a special char like \t and that will bite you.

                      Qt has to stay free or it will die.

                      1 Reply Last reply
                      2
                      • G Offline
                        G Offline
                        Guti
                        wrote on last edited by
                        #11

                        ok, thank you - i will replace the backslashes, but I just want to mention:
                        this settting is working ;-)

                        aha_1980A 1 Reply Last reply
                        1
                        • G Guti

                          ok, thank you - i will replace the backslashes, but I just want to mention:
                          this settting is working ;-)

                          aha_1980A Offline
                          aha_1980A Offline
                          aha_1980
                          Lifetime Qt Champion
                          wrote on last edited by
                          #12

                          @Guti said in Environment Variable:

                          this settting is working ;-)

                          Unfortunately this doesn't mean it is correct. And it can stop working from one day to another... so better fix it.

                          Regards

                          Qt has to stay free or it will die.

                          1 Reply Last reply
                          2
                          • 8Observer88 Offline
                            8Observer88 Offline
                            8Observer8
                            wrote on last edited by 8Observer8
                            #13

                            Build Bullet from source useing CMake GUI and MinGW. You will get libs (files with .a extension). Place "include" and "lib" folder in common folder, for example, in "Libs/Bullet"

                            Create an empty C++ project. Add these settings to .pro:

                            INCLUDEPATH += "E:\Libs\Bullet3-2.89\include"
                            
                            LIBS += -L"E:\Libs\Bullet3-2.89\lib"
                            LIBS += -lBulletDynamics -lBulletCollision -lLinearMath
                            
                            SOURCES += \
                                main.cpp
                            

                            Try to compile it:

                            main.cpp

                            #include <btBulletDynamicsCommon.h>
                            
                            int main()
                            {
                                btDefaultCollisionConfiguration *collisionConfiguration = new btDefaultCollisionConfiguration();
                            
                                return EXIT_SUCCESS;
                            }
                            

                            It works.

                            1 Reply Last reply
                            1
                            • 8Observer88 Offline
                              8Observer88 Offline
                              8Observer8
                              wrote on last edited by
                              #14

                              But I found a very strange behavior. If I write like this:

                              LIBS += -lBulletCollision -lBulletDynamics -lLinearMath
                              

                              I will get these errors:

                              btTypedConstraint.cpp:-1: error: undefined reference tobtCollisionObject::~btCollisionObject()'
                              btTypedConstraint.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()' btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::btCollisionObject()'
                              btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::btCollisionObject()' btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::serialize(void*, btSerializer*) const'
                              btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()' btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()'
                              btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()' btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()'
                              btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()'

                              But if I change the order of libs it works correctly:

                              LIBS += -lBulletDynamics -lBulletCollision -lLinearMath
                              
                              JonBJ 1 Reply Last reply
                              1
                              • 8Observer88 8Observer8

                                But I found a very strange behavior. If I write like this:

                                LIBS += -lBulletCollision -lBulletDynamics -lLinearMath
                                

                                I will get these errors:

                                btTypedConstraint.cpp:-1: error: undefined reference tobtCollisionObject::~btCollisionObject()'
                                btTypedConstraint.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()' btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::btCollisionObject()'
                                btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::btCollisionObject()' btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::serialize(void*, btSerializer*) const'
                                btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()' btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()'
                                btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()' btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()'
                                btRigidBody.cpp:-1: error: undefined reference to btCollisionObject::~btCollisionObject()'

                                But if I change the order of libs it works correctly:

                                LIBS += -lBulletDynamics -lBulletCollision -lLinearMath
                                
                                JonBJ Offline
                                JonBJ Offline
                                JonB
                                wrote on last edited by
                                #15

                                @8Observer8
                                Does BulletDynamics reference something in BulletCollision? The order of library linking is significant.

                                8Observer88 1 Reply Last reply
                                1
                                • G Guti

                                  hi,
                                  i am having the same issue (win10_x64)
                                  Qt Creator 4.9.1

                                  did set the BULLET_PATH_ENVIRONMENT to "C:\bulletphysics\bullet3"

                                  i am just trying to figure out the Qt 3D and bullet physics engine in order to get started with my own project

                                  currently i am trying to compile this simulator:
                                  https://github.com/patrickelectric/Qt3D-Konqi-Simulator

                                  therefore I checked out this repository
                                  https://bitbucket.org/csaga77/bullet-physics-qml-plugin/src/master/
                                  into this folder:
                                  Qt3D-Konqi-Simulator\lib\bullet-physics-qml-plugin

                                  and here you can see my build settings
                                  0_1560454689842_build settings.JPG

                                  I am also getting the error message "bullet development package not found"

                                  Can someone help me out?

                                  S Offline
                                  S Offline
                                  safylee
                                  wrote on last edited by
                                  #16

                                  @Guti have you solve the probem? I met the same trouble.The bullet package not found!

                                  G 1 Reply Last reply
                                  0
                                  • S safylee

                                    @Guti have you solve the probem? I met the same trouble.The bullet package not found!

                                    G Offline
                                    G Offline
                                    Guti
                                    wrote on last edited by Guti
                                    #17

                                    @safylee I did not solve it for this example project, but as I mentioned in a later comment, I could make the bullet engine work with my own project.

                                    1 Reply Last reply
                                    0
                                    • JonBJ JonB

                                      @8Observer8
                                      Does BulletDynamics reference something in BulletCollision? The order of library linking is significant.

                                      8Observer88 Offline
                                      8Observer88 Offline
                                      8Observer8
                                      wrote on last edited by 8Observer8
                                      #18

                                      @JonB said in Environment Variable:

                                      The order of library linking is significant.

                                      Yes, I set this order of libraries and it works:

                                      LIBS += -lBulletDynamics -lBulletCollision -lLinearMath
                                      
                                      JonBJ 1 Reply Last reply
                                      0
                                      • 8Observer88 8Observer8

                                        @JonB said in Environment Variable:

                                        The order of library linking is significant.

                                        Yes, I set this order of libraries and it works:

                                        LIBS += -lBulletDynamics -lBulletCollision -lLinearMath
                                        
                                        JonBJ Offline
                                        JonBJ Offline
                                        JonB
                                        wrote on last edited by
                                        #19

                                        @8Observer8
                                        Indeed, so it does. What do you find "a very strange behavior"? It is working as expected. Libraries expect to find other Libraries which resolve the first one's undefined references later on the linker line. If they came earlier the linker would not know they were needed by a later library.

                                        8Observer88 1 Reply Last reply
                                        0
                                        • JonBJ JonB

                                          @8Observer8
                                          Indeed, so it does. What do you find "a very strange behavior"? It is working as expected. Libraries expect to find other Libraries which resolve the first one's undefined references later on the linker line. If they came earlier the linker would not know they were needed by a later library.

                                          8Observer88 Offline
                                          8Observer88 Offline
                                          8Observer8
                                          wrote on last edited by
                                          #20

                                          @JonB said in Environment Variable:

                                          Indeed, so it does. What do you find "a very strange behavior"?

                                          I didn't know before that the order of the libraries mattered, so I called it strange behavior, but now I know.

                                          JonBJ 1 Reply Last reply
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