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LIBS += -L$${BULLET_LOCATION}/lib
LIBS += -L$${BULLET_LOCATION}/lib  -lBulletDynamics -lBulletCollision -lLinearMath

Попытался вот так, но по-прежнему те же ошибки:

LIBS += -L$${QWT_LOCATION}/lib \
     -lqwtd

Покажите ошибки с самого начала.

C++ (Qt)
#include <QCoreApplication>
#include <btBulletDynamicsCommon.h>
#include <iostream>
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
 
    btBroadphaseInterface* broadphase = new btDbvtBroadphase();
 
    btDefaultCollisionConfiguration* collisionConfiguration = new btDefaultCollisionConfiguration();
    btCollisionDispatcher* dispatcher = new btCollisionDispatcher(collisionConfiguration);
 
    btSequentialImpulseConstraintSolver* solver = new btSequentialImpulseConstraintSolver;
 
    btDiscreteDynamicsWorld* dynamicsWorld = new btDiscreteDynamicsWorld(dispatcher,broadphase,solver,collisionConfiguration);
 
    dynamicsWorld->setGravity(btVector3(0,-10,0));
 
 
    btCollisionShape* groundShape = new btStaticPlaneShape(btVector3(0,1,0),1);
 
    btCollisionShape* fallShape = new btSphereShape(1);
 
 
    btDefaultMotionState* groundMotionState = new btDefaultMotionState(btTransform(btQuaternion(0,0,0,1),btVector3(0,-1,0)));
    btRigidBody::btRigidBodyConstructionInfo
            groundRigidBodyCI(0,groundMotionState,groundShape,btVector3(0,0,0));
    btRigidBody* groundRigidBody = new btRigidBody(groundRigidBodyCI);
    dynamicsWorld->addRigidBody(groundRigidBody);
 
 
    btDefaultMotionState* fallMotionState =
            new btDefaultMotionState(btTransform(btQuaternion(0,0,0,1),btVector3(0,50,0)));
    btScalar mass = 1;
    btVector3 fallInertia(0,0,0);
    fallShape->calculateLocalInertia(mass,fallInertia);
    btRigidBody::btRigidBodyConstructionInfo fallRigidBodyCI(mass,fallMotionState,fallShape,fallInertia);
    btRigidBody* fallRigidBody = new btRigidBody(fallRigidBodyCI);
    dynamicsWorld->addRigidBody(fallRigidBody);
 
 
    for (int i=0 ; i<300 ; i++) {
        dynamicsWorld->stepSimulation(1/60.f,10);
 
        btTransform trans;
        fallRigidBody->getMotionState()->getWorldTransform(trans);
 
        std::cout << "sphere height: " << trans.getOrigin().getY() << std::endl;
    }
 
    dynamicsWorld->removeRigidBody(fallRigidBody);
    delete fallRigidBody->getMotionState();
    delete fallRigidBody;
 
    dynamicsWorld->removeRigidBody(groundRigidBody);
    delete groundRigidBody->getMotionState();
    delete groundRigidBody;
 
    delete fallShape;
    delete groundShape;
 
    delete dynamicsWorld;
    delete solver;
    delete collisionConfiguration;
    delete dispatcher;
    delete broadphase;
 
    return a.exec();
}
 

17:46:53: Running steps for project HelloBullet...
17:46:53: Configuration unchanged, skipping qmake step.
17:46:53: Starting: "C:\Qt\Qt5.2.1\Tools\mingw48_32\bin\mingw32-make.exe"
C:/Qt/Qt5.2.1/Tools/mingw48_32/bin/mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory 'D:/Documents/Qt/QtBullet/build-HelloBullet-Desktop_Qt_5_2_1_MinGW_32bit-Debug'
g++ -Wl,-subsystem,console -mthreads -o debug/HelloBullet.exe debug/main.o  -LC:/cygwin64/usr/local/lib -lBulletDynamics -lBulletCollision -lLinearMath -lBulletSoftBody -LC:\Qt\Qt5.2.1\5.2.1\mingw48_32\lib -lQt5Cored
debug/main.o: In function `main':
D:\Documents\Qt\QtBullet\build-HelloBullet-Desktop_Qt_5_2_1_MinGW_32bit-Debug/../HelloBullet/main.cpp:9: undefined reference to `btDbvtBroadphase::btDbvtBroadphase(btOverlappingPairCache*)'
D:\Documents\Qt\QtBullet\build-HelloBullet-Desktop_Qt_5_2_1_MinGW_32bit-Debug/../HelloBullet/main.cpp:11: undefined reference to `btDefaultCollisionConfiguration::btDefaultCollisionConfiguration(btDefaultCollisionConstructionInfo const&)'
D:\Documents\Qt\QtBullet\build-HelloBullet-Desktop_Qt_5_2_1_MinGW_32bit-Debug/../HelloBullet/main.cpp:12: undefined reference to `btCollisionDispatcher::btCollisionDispatcher(btCollisionConfiguration*)'
D:\Documents\Qt\QtBullet\build-HelloBullet-Desktop_Qt_5_2_1_MinGW_32bit-Debug/../HelloBullet/main.cpp:14: undefined reference to `btSequentialImpulseConstraintSolver::btSequentialImpulseConstraintSolver()'
D:\Documents\Qt\QtBullet\build-HelloBullet-Desktop_Qt_5_2_1_MinGW_32bit-Debug/../HelloBullet/main.cpp:16: undefined reference to `btDiscreteDynamicsWorld::btDiscreteDynamicsWorld(btDispatcher*, btBroadphaseInterface*, btConstraintSolver*, btCollisionConfiguration*)'
D:\Documents\Qt\QtBullet\build-HelloBullet-Desktop_Qt_5_2_1_MinGW_32bit-Debug/../HelloBullet/main.cpp:21: undefined reference to `btStaticPlaneShape::btStaticPlaneShape(btVector3 const&, float)'
D:\Documents\Qt\QtBullet\build-HelloBullet-Desktop_Qt_5_2_1_MinGW_32bit-Debug/../HelloBullet/main.cpp:29: undefined reference to `btRigidBody::btRigidBody(btRigidBody::btRigidBodyConstructionInfo const&)'
D:\Documents\Qt\QtBullet\build-HelloBullet-Desktop_Qt_5_2_1_MinGW_32bit-Debug/../HelloBullet/main.cpp:39: undefined reference to `btRigidBody::btRigidBody(btRigidBody::btRigidBodyConstructionInfo const&)'
debug/main.o: In function `ZN17btCollisionObjectnwEj':
C:/cygwin64/usr/local/include/bullet/BulletCollision/CollisionDispatch/btCollisionObject.h:123: undefined reference to `btAlignedAllocInternal(unsigned int, int)'
debug/main.o: In function `ZN17btCollisionObjectdlEPv':
C:/cygwin64/usr/local/include/bullet/BulletCollision/CollisionDispatch/btCollisionObject.h:123: undefined reference to `btAlignedFreeInternal(void*)'
debug/main.o: In function `ZN13btSphereShapenwEj':
C:/cygwin64/usr/local/include/bullet/BulletCollision/CollisionShapes/btSphereShape.h:27: undefined reference to `btAlignedAllocInternal(unsigned int, int)'
debug/main.o: In function `ZN13btSphereShapedlEPv':
C:/cygwin64/usr/local/include/bullet/BulletCollision/CollisionShapes/btSphereShape.h:27: undefined reference to `btAlignedFreeInternal(void*)'
debug/main.o: In function `ZN13btSphereShapeC1Ef':
C:/cygwin64/usr/local/include/bullet/BulletCollision/CollisionShapes/btSphereShape.h:29: undefined reference to `btConvexInternalShape::btConvexInternalShape()'
C:/cygwin64/usr/local/include/bullet/BulletCollision/CollisionShapes/btSphereShape.h:29: undefined reference to `vtable for btSphereShape'
debug/main.o: In function `ZN18btStaticPlaneShapenwEj':
C:/cygwin64/usr/local/include/bullet/BulletCollision/CollisionShapes/btStaticPlaneShape.h:34: undefined reference to `btAlignedAllocInternal(unsigned int, int)'
debug/main.o: In function `ZN18btStaticPlaneShapedlEPv':
C:/cygwin64/usr/local/include/bullet/BulletCollision/CollisionShapes/btStaticPlaneShape.h:34: undefined reference to `btAlignedFreeInternal(void*)'
debug/main.o: In function `ZN20btDefaultMotionStatenwEj':
C:/cygwin64/usr/local/include/bullet/LinearMath/btDefaultMotionState.h:14: undefined reference to `btAlignedAllocInternal(unsigned int, int)'
debug/main.o: In function `ZN20btDefaultMotionStatedlEPv':
C:/cygwin64/usr/local/include/bullet/LinearMath/btDefaultMotionState.h:14: undefined reference to `btAlignedFreeInternal(void*)'
debug/main.o: In function `ZN23btDiscreteDynamicsWorldnwEj':
C:/cygwin64/usr/local/include/bullet/BulletDynamics/Dynamics/btDiscreteDynamicsWorld.h:99: undefined reference to `btAlignedAllocInternal(unsigned int, int)'
debug/main.o: In function `ZN23btDiscreteDynamicsWorlddlEPv':
C:/cygwin64/usr/local/include/bullet/BulletDynamics/Dynamics/btDiscreteDynamicsWorld.h:99: undefined reference to `btAlignedFreeInternal(void*)'
debug/main.o: In function `ZN17btTypedConstraintdlEPv':
C:/cygwin64/usr/local/include/bullet/BulletDynamics/ConstraintSolver/btTypedConstraint.h:112: undefined reference to `btAlignedFreeInternal(void*)'
debug/main.o: In function `ZN35btSequentialImpulseConstraintSolvernwEj':
C:/cygwin64/usr/local/include/bullet/BulletDynamics/ConstraintSolver/btSequentialImpulseConstraintSolver.h:112: undefined reference to `btAlignedAllocInternal(unsigned int, int)'
debug/main.o: In function `ZN35btSequentialImpulseConstraintSolverdlEPv':
C:/cygwin64/usr/local/include/bullet/BulletDynamics/ConstraintSolver/btSequentialImpulseConstraintSolver.h:112: undefined reference to `btAlignedFreeInternal(void*)'
debug/main.o: In function `ZN18btAlignedAllocatorIiLj16EE10deallocateEPi':
Makefile.Debug:77: recipe for target 'debug/HelloBullet.exe' failed
mingw32-make[1]: Leaving directory 'D:/Documents/Qt/QtBullet/build-HelloBullet-Desktop_Qt_5_2_1_MinGW_32bit-Debug'
makefile:34: recipe for target 'debug' failed
C:/cygwin64/usr/local/include/bullet/LinearMath/btAlignedAllocator.h:90: undefined reference to `btAlignedFreeInternal(void*)'
debug/main.o: In function `ZN18btAlignedAllocatorI9btHashIntLj16EE10deallocateEPS0_':
C:/cygwin64/usr/local/include/bullet/LinearMath/btAlignedAllocator.h:90: undefined reference to `btAlignedFreeInternal(void*)'
debug/main.o: In function `ZN18btAlignedAllocatorI14btTriangleInfoLj16EE10deallocateEPS0_':
C:/cygwin64/usr/local/include/bullet/LinearMath/btAlignedAllocator.h:90: undefined reference to `btAlignedFreeInternal(void*)'
debug/main.o:main.cpp:(.rdata$_ZTV17btTypedConstraint[__ZTV17btTypedConstraint]+0x30): undefined reference to `btTypedConstraint::serialize(void*, btSerializer*) const'
collect2.exe: error: ld returned 1 exit status
mingw32-make[1]: *** [debug/HelloBullet.exe] Error 1
mingw32-make: *** [debug] Error 2
17:46:54: The process "C:\Qt\Qt5.2.1\Tools\mingw48_32\bin\mingw32-make.exe" exited with code 2.
Error while building/deploying project HelloBullet (kit: Desktop Qt 5.2.1 MinGW 32bit)
When executing step 'Make'
17:46:54: Elapsed time: 00:01.

Получается, что там тоже самое, что и на картинке.

Вы готовые библиотеки скачивали или сами собирали. Если второе, то каким компилятором (из какой директории)?

-G <generator-name>         = Specify a makefile generator.

C:\bullet-build>cmake /cygdrive/c/bullet-2.82-r2704 -G "Unix Makefiles" -DINSTALL_LIBS=ON
CMake Warning at /usr/share/cmake-2.8.11.2/Modules/Platform/CYGWIN.cmake:15 (message):
  CMake no longer defines WIN32 on Cygwin!

  (1) If you are just trying to build this project, ignore this warning or
  quiet it by setting CMAKE_LEGACY_CYGWIN_WIN32=0 in your environment or in
  the CMake cache.  If later configuration or build errors occur then this
  project may have been written under the assumption that Cygwin is WIN32.
  In that case, set CMAKE_LEGACY_CYGWIN_WIN32=1 instead.

  (2) If you are developing this project, add the line

    set(CMAKE_LEGACY_CYGWIN_WIN32 0) # Remove when CMake >= 2.8.4 is required

  at the top of your top-level CMakeLists.txt file or set the minimum
  required version of CMake to 2.8.4 or higher.  Then teach your project to
  build on Cygwin without WIN32.
Call Stack (most recent call first):
  /usr/share/cmake-2.8.11.2/Modules/CMakeSystemSpecificInformation.cmake:36 (include)
  CMakeLists.txt:7 (PROJECT)


-- Could NOT find OpenGL (missing:  OPENGL_gl_LIBRARY)
OPENGL NOT FOUND
-- WARNING: you are using the obsolete 'GLU' package, please use 'OpenGL' instead
-- Could NOT find GLUT (missing:  GLUT_glut_LIBRARY GLUT_INCLUDE_DIR)
GLUT NOT FOUND
-- Configuring done
-- Generating done
-- Build files have been written to: /cygdrive/c/bullet-2.82-r2704

C:\bullet-build>

LIBS += -L$${BULLET_LOCATION}/lib  -llibBulletDynamics

Под виндой еще можно так попробовать:

Т.е. полное название файла.

У меня такое ощущение, что не все библиотеки собрались. Вот какие есть: -lBulletSoftBody -lBulletDynamics -lBulletCollision -lLinearMath

Меня пугает, что добавлению нет конца. Он всё требует и требует. Я уже больше десятка .h .cpp подключил.

То мало, подключайте сразу пачками (фолдерами).

SOURCES += ../FiveAndFive/FiveAndFive.cpp