+ # CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas -Wcast-qual -g -fsanitize=thread
+ # LDFLAGS=-g -fsanitize=thread
+ # CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas -Wcast-qual -g -fsanitize=address
+ # LDFLAGS=-g -fsanitize=address
+-LIBS=-lm -lpthread -lz