$ gcc -o przyklad -l/usr/X11R6/include -L/usr/X11R6/lib -R/usr/X11R6/lib -IX11
przyklad.c
gcc: unrecognized option '-R/usr/X11R6/lib'
przyklad.c:6:22: error: X11/Xlib.h: No such file or directory
przyklad.c:7:23: error: X11/Xutil.h: No such file or directory
przyklad.c: In function 'main':
przyklad.c:20: error: 'Display' undeclared (first use in this function)
przyklad.c:20: error: (Each undeclared identifier is reported only once
przyklad.c:20: error: for each function it appears in.)
przyklad.c:20: error: 'display' undeclared (first use in this function)
przyklad.c:21: error: 'Window' undeclared (first use in this function)
przyklad.c:21: error: expected ';' before 'window'
przyklad.c:22: error: 'GC' undeclared (first use in this function)
przyklad.c:22: error: expected ';' before 'gc'
przyklad.c:23: error: 'XEvent' undeclared (first use in this function)
przyklad.c:23: error: expected ';' before 'event'
przyklad.c:24: error: 'KeySym' undeclared (first use in this function)
przyklad.c:24: error: expected ';' before 'key'
przyklad.c:25: error: 'XSizeHints' undeclared (first use in this function)
przyklad.c:25: error: expected ';' before 'info'
przyklad.c:33: error: 'XPoint' undeclared (first use in this function)
przyklad.c:33: error: expected ';' before 'triangle'
przyklad.c:34: error: expected ';' before 'square'
przyklad.c:35: error: 'poly' undeclared (first use in this function)
przyklad.c:36: error: expected ';' before 'pts'
przyklad.c:39: error: expected ';' before 'current_point'
przyklad.c:43: error: 'Colormap' undeclared (first use in this function)
przyklad.c:43: error: expected ';' before 'colormap'
przyklad.c:51: error: 'colormap' undeclared (first use in this function)
przyklad.c: In function 'AllocNamedColor':
przyklad.c:55: error: 'XColor' undeclared (first use in this function)
przyklad.c:55: error: expected ';' before 'col'
przyklad.c:56: error: 'col' undeclared (first use in this function)
przyklad.c: In function 'main':
przyklad.c:66: error: 'info' undeclared (first use in this function)
przyklad.c:70: error: 'PPosition' undeclared (first use in this function)
przyklad.c:70: error: 'PSize' undeclared (first use in this function)
przyklad.c:72: error: 'window' undeclared (first use in this function)
przyklad.c:75: error: 'None' undeclared (first use in this function)
przyklad.c:77: error: 'gc' undeclared (first use in this function)
przyklad.c:82: error: 'KeyPressMask' undeclared (first use in this function)
przyklad.c:82: error: 'ExposureMask' undeclared (first use in this function)
przyklad.c:82: error: 'ButtonPressMask' undeclared (first use in this function)
przyklad.c:83: error: 'ButtonReleaseMask' undeclared (first use in this functio
)
przyklad.c:83: error: 'Button1MotionMask' undeclared (first use in this functio
)
przyklad.c:90: error: 'event' undeclared (first use in this function)
przyklad.c:94: error: 'Expose' undeclared (first use in this function)
przyklad.c:108: error: 'pts' undeclared (first use in this function)
przyklad.c:112: error: 'square' undeclared (first use in this function)
przyklad.c:112: error: 'triangle' undeclared (first use in this function)
przyklad.c:118: error: 'Nonconvex' undeclared (first use in this function)
przyklad.c:118: error: 'CoordModePrevious' undeclared (first use in this functi
n)
przyklad.c:128: error: 'MappingNotify' undeclared (first use in this function)
przyklad.c:132: error: 'ButtonRelease' undeclared (first use in this function)
przyklad.c:133: error: 'Button1' undeclared (first use in this function)
przyklad.c:135: error: 'current_point' undeclared (first use in this function)
przyklad.c:148: error: 'KeyPress' undeclared (first use in this function)
przyklad.c:149: error: 'key' undeclared (first use in this function)

mASTEr@master-q50wd92q ~
$