error compile raylib's examples

gcc -o core_basic_window core_basic_window.c -O2 -Wall -std=c99 -I. -I../src -I../src/external -I/usr/local/include/raylib/ -L. -L../src -lraylib -lglfw3 -lGL -lopenal -lm -pthread -ldl -DPLATFORM_DESKTOP
/usr/bin/ld: cannot find -lraylib
collect2: error: ld returned 1 exit status
Makefile:225: recipe for target 'core_basic_window' failed
make: *** [core_basic_window] Error 1