diff -Nrup a/Makefile b/Makefile

--- a/Makefile	2017-10-23 18:03:40.237177646 -0400

+++ b/Makefile	2017-10-23 18:06:20.060683518 -0400

@@ -292,7 +292,7 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fn

 # January's first Monday when a "%V" format is used and January 1

 # falls on a Friday, Saturday, or Sunday.

-CFLAGS=

+CFLAGS= -DHAVE_SNPRINTF=1

 # Linker flags.  Default to $(LFLAGS) for backwards compatibility

 # to release 2012h and earlier.