--- Makefile.orig 2016-09-05 13:31:39.000000000 -0400 +++ Makefile 2016-09-12 17:19:29.000000000 -0400 @@ -17,7 +17,7 @@ RM = rm -f # On some platforms you might need to comment this out: -CFLAGS += -std=c90 +CFLAGS += -std=c99 CFLAGS += -O3 -funroll-loops -fomit-frame-pointer