> make
gcc -Wall -Wextra -std=c99 -g -c main.c -o main.o
gcc -Wall -Wextra -std=c99 -g -c process_list.c -o process_list.o
gcc -Wall -Wextra -std=c99 -g -c ui.c -o ui.o
ui.c:445:37: error: use of undeclared identifier 'BUTTON5_PRESSED'
445 | if (event.bstate & (BUTTON5_PRESSED | 2097152)) { // scroll down
| ^
1 error generated.
make: *** [ui.o] Error 1
