directfb를 이용하여 선을 그리기 예제를 실행했는데 이러한 에러가 나왔습니다. directfb 세팅부터 하나도 모르겠군요....

소스코드는 아래와 같습니다
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#include
#include

#include

static IDirectFB *dfb = NULL;
static IDirectFBSurface *primary = NULL;

static int screen_width = 0;
static int screen_height = 0;


#define DFBCHECK(x...) \
{ \
DFBResult err = x; \
\
if (err != DFB_OK) \
{ \
fprintf( stderr, "%s <%d>:\n\t", __FILE__, __LINE__ ); \
DirectFBErrorFatal( #x, err ); \
} \
}


int main(int argc, char **argv)
{
DFBSurfaceDescription dsc;

DFBCHECK(DirectFBInit (&argc, &argv));

DFBCHECK(DirectFBCreate (&dfb));

DFBCHECK(dfb->SetCooperativeLevel (dfb,DFSCL_FULLSCREEN));

dsc.flags = DSDESC_CAPS;
dsc.caps = DSCAPS_PRIMARY | DSCAPS_FLIPPING;

DFBCHECK(dfb->CreateSurface(dfb,&dsc,&primary));
DFBCHECK(primary->GetSize(primary,&screen_width, &screen_height));
DFBCHECK(primary->FillRectangle(primary,0,0,screen_width,screen_height));
DFBCHECK (primary->SetColor (primary, 0xff, 0x00, 0x00, 0xff));
DFBCHECK (primary->DrawLine (primary,0,0, screen_width,screen_height ));

DFBCHECK (primary->Flip (primary, NULL, 0));
sleep (5);
primary->Release( primary );
dfb->Release( dfb );

return 23;
}

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발생한 에러는 아래와 같습니다

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root@DeathMania test]# gcc `pkg-config --cflags directfb` -o test b.c `pkg-config --libs directfb` -g
Package directfb was not found in the pkg-config search path.
Perhaps you should add the directory containing `directfb.pc'
to the PKG_CONFIG_PATH environment variable
No package 'directfb' found
Package directfb was not found in the pkg-config search path.
Perhaps you should add the directory containing `directfb.pc'
to the PKG_CONFIG_PATH environment variable
No package 'directfb' found
/tmp/cccE8C4c.o: In function `main':/home/DeathMania/test/b.c:29: undefined reference to `DirectFBInit'
:/home/DeathMania/test/b.c:29: undefined reference to `DirectFBErrorFatal'
:/home/DeathMania/test/b.c:31: undefined reference to `DirectFBCreate'
:/home/DeathMania/test/b.c:31: undefined reference to `DirectFBErrorFatal'
:/home/DeathMania/test/b.c:33: undefined reference to `DirectFBErrorFatal'
:/home/DeathMania/test/b.c:38: undefined reference to `DirectFBErrorFatal'
:/home/DeathMania/test/b.c:39: undefined reference to `DirectFBErrorFatal'
:/home/DeathMania/test/b.c:40: undefined reference to `DirectFBErrorFatal'
/tmp/cccE8C4c.o:/home/DeathMania/test/b.c:41: more undefined references to `DirectFBErrorFatal' follow
collect2: ld returned 1 exit status