--- ./Makefile.orig	2025-06-11 16:10:59.839765755 -0500
+++ ./Makefile	2025-06-11 16:11:34.236708716 -0500
@@ -44,7 +44,7 @@
 BINDIR=/usr/sbin
 MANDIR=/usr/share/man
 
-CFLAGS= $(OPTDEFS) $(SYSDEFS) $(FILEDEFS) $(MOREDEFS)
+CFLAGS= $(OPTDEFS) $(SYSDEFS) $(FILEDEFS) $(MOREDEFS) -std=gnu17
 PROGS= bootpd bootpef bootpgw bootptest
 TESTS= trylook trygetif trygetea