chipmunk에서 bounce.c라는 데모를 실행하는 중에 오류가 발생했습니다.

Question

#include <stdlib.h> 
#include <stdio.h> 
#include <math.h> 

#include "/home/satyajit/Chipmunk-5.2.0/include/chipmunk/chipmunk.h" 
#include "drawSpace.h" 
#include "ChipmunkDemo.h" 

cpSpace *space; 
cpBody *staticBody; 

int i; 
static void 
update(int ticks) 
{ 
    int steps = 3; 
    cpFloat dt = 1.0f/60.0f/(cpFloat)steps; 

    for(i=0; i<steps; i++) 
    { 
     cpSpaceStep(space, dt); 
    } 
} 

static void 
add_box() 
{ 
    const cpFloat size = 10.0f; 
    const cpFloat mass = 1.0f; 

    cpVect verts[] = { 
     cpv(-size,-size), 
     cpv(-size, size), 
     cpv(size, size), 
     cpv(size,-size), 
    }; 

    cpFloat radius = cpvlength(cpv(size, size)); 

    cpBody *body = cpSpaceAddBody(space, cpBodyNew(mass, cpMomentForPoly(mass, 4, verts, cpvzero))); 
    body->p = cpv(frand()*(640 - 2*radius) - (320 - radius), frand()*(480 - 2*radius) - (240 - radius)); 
    body->v = cpvmult(cpv(2*frand() - 1, 2*frand() - 1), 200); 

    cpShape *shape = cpSpaceAddShape(space, cpPolyShapeNew(body, 4, verts, cpvzero)); 
    shape->e = 1.0f; shape->u = 0.0f; 
} 

static cpSpace * 
init(void) 
{ 
    staticBody = cpBodyNew(INFINITY, INFINITY); 

    cpResetShapeIdCounter(); 

    space = cpSpaceNew(); 
    cpSpaceResizeActiveHash(space, 30.0f, 1000); 
    space->iterations = 10; 

    cpShape *shape; 

    // Create segments around the edge of the screen. 
    shape = cpSpaceAddStaticShape(space, cpSegmentShapeNew(staticBody, cpv(-320,-240), cpv(-320,240), 0.0f)); 
    shape->e = 1.0f; shape->u = 1.0f; 
    shape->layers = NOT_GRABABLE_MASK; 

    shape = cpSpaceAddStaticShape(space, cpSegmentShapeNew(staticBody, cpv(320,-240), cpv(320,240), 0.0f)); 
    shape->e = 1.0f; shape->u = 1.0f; 
    shape->layers = NOT_GRABABLE_MASK; 

    shape = cpSpaceAddStaticShape(space, cpSegmentShapeNew(staticBody, cpv(-320,-240), cpv(320,-240), 0.0f)); 
    shape->e = 1.0f; shape->u = 1.0f; 
    shape->layers = NOT_GRABABLE_MASK; 

    shape = cpSpaceAddStaticShape(space, cpSegmentShapeNew(staticBody, cpv(-320,240), cpv(320,240), 0.0f)); 
    shape->e = 1.0f; shape->u = 1.0f; 
    shape->layers = NOT_GRABABLE_MASK; 

    for(i=0; i<10; i++) 
     add_box(); 

    cpBody *body = cpSpaceAddBody(space, cpBodyNew(100.0f, 10000.0f)); 

    shape = cpSpaceAddShape(space, cpSegmentShapeNew(body, cpv(-75,0), cpv(75,0), 5.0f)); 
    shape->e = 1.0f; shape->u = 1.0f; 

    cpSpaceAddConstraint(space, cpPivotJointNew2(body, staticBody, cpvzero, cpvzero)); 

    return space; 
} 

static void 
destroy(void) 
{ 
    cpBodyFree(staticBody); 
    cpSpaceFreeChildren(space); 
    cpSpaceFree(space); 
} 

const chipmunkDemo Bounce = { 
    "Bounce", 
    NULL, 
    init, 
    update, 
    destroy, 
}; 

이것은 코드입니다. 내가 그것을 실행하면 오류가 발생합니다.

/usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/crt1.o: In function `_start': 
    (.text+0x18): undefined reference to `main' 
    /tmp/ccyG1FXX.o: In function `update': 
    Bounce.c:(.text+0x37): undefined reference to `cpSpaceStep' 
    /tmp/ccyG1FXX.o: In function `add_box': 
    Bounce.c:(.text+0x18f): undefined reference to `cpvlength' 
    Bounce.c:(.text+0x1d3): undefined reference to `cpMomentForPoly' 
    Bounce.c:(.text+0x1e2): undefined reference to `cpBodyNew' 
    Bounce.c:(.text+0x1f4): undefined reference to `cpSpaceAddBody' 
    Bounce.c:(.text+0x368): undefined reference to `cpPolyShapeNew' 
    Bounce.c:(.text+0x37a): undefined reference to `cpSpaceAddShape' 
    /tmp/ccyG1FXX.o: In function `init': 
    Bounce.c:(.text+0x45c): undefined reference to `cpBodyNew' 
    Bounce.c:(.text+0x466): undefined reference to `cpResetShapeIdCounter' 
    Bounce.c:(.text+0x46b): undefined reference to `cpSpaceNew' 
    Bounce.c:(.text+0x48f): undefined reference to `cpSpaceResizeActiveHash' 
    Bounce.c:(.text+0x548): undefined reference to `cpSegmentShapeNew' 
    Bounce.c:(.text+0x55a): undefined reference to `cpSpaceAddStaticShape' 
    Bounce.c:(.text+0x610): undefined reference to `cpSegmentShapeNew' 
    Bounce.c:(.text+0x622): undefined reference to `cpSpaceAddStaticShape' 
    Bounce.c:(.text+0x6cf): undefined reference to `cpSegmentShapeNew' 
    Bounce.c:(.text+0x6e1): undefined reference to `cpSpaceAddStaticShape' 
    Bounce.c:(.text+0x78e): undefined reference to `cpSegmentShapeNew' 
    Bounce.c:(.text+0x7a0): undefined reference to `cpSpaceAddStaticShape' 
    Bounce.c:(.text+0x7fd): undefined reference to `cpBodyNew' 
    Bounce.c:(.text+0x80f): undefined reference to `cpSpaceAddBody' 
    Bounce.c:(.text+0x89b): undefined reference to `cpSegmentShapeNew' 
    Bounce.c:(.text+0x8ad): undefined reference to `cpSpaceAddShape' 
    Bounce.c:(.text+0x91d): undefined reference to `cpPivotJointNew2' 
    Bounce.c:(.text+0x92f): undefined reference to `cpSpaceAddConstraint' 
    /tmp/ccyG1FXX.o: In function `destroy': 
    Bounce.c:(.text+0x949): undefined reference to `cpBodyFree' 
    Bounce.c:(.text+0x956): undefined reference to `cpSpaceFreeChildren' 
    Bounce.c:(.text+0x963): undefined reference to `cpSpaceFree' 
    collect2: ld returned 1 exit status 

Answer 1

헤더 검색 경로를 업데이트해야합니다.