CFLAGS = -Wall -Wextra -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast \
-Wcast-qual -Wcast-align -Wwrite-strings -Wconversion \
-Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations \
-Wpadded -Wredundant-decls -Wunreachable-code -Wformat-nonliteral \
-Wnested-externs -g -pedantic -ansi -O3
