Fix build on linux

Makefile

 else
 	LIBRARIES=-lX11 -lGL -lpthread -lpng -lasound
 	EXECUTABLE=awoorwae
+	CC=gcc
+	CPP=g++
 endif
 SOURCES=$(wildcard src/*.c)
 SOURCES_CPP=$(wildcard src/*.cpp)
 	gdb $(EXECUTABLE)
 
 run: $(EXECUTABLE)
-	./$(EXECUTABLE)
+	./$(EXECUTABLE)