$NetBSD: patch-src_Makefile,v 1.1 2024/10/10 17:55:25 nia Exp $

Set correct compiler flags for standards & functions used.

--- src/Makefile.orig	2019-09-11 17:43:12.000000000 +0000
+++ src/Makefile
@@ -10,7 +10,7 @@
 
 CPPFLAGS =
 CFLAGS  ?= -O2
-override CFLAGS += -ansi -fomit-frame-pointer -fstack-protector-strong -W -Wall -Wunreachable-code -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -D_XOPEN_SOURCE -D_GNU_SOURCE -DVERSION=\"$(VERSION)\"
+override CFLAGS += -std=gnu89 -fomit-frame-pointer -fstack-protector-strong -W -Wall -Wunreachable-code -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -D_XOPEN_SOURCE=600 -D_POSIX_C_SOURCE=200112L -D_GNU_SOURCE -DVERSION=\"$(VERSION)\"
 override CFLAGS += $(shell getconf LFS_CFLAGS)
 STATIC	=
 MANDB	:= s@^\('\\\\\"\)[^\*-]*-\*- coding: [^[:blank:]]\+ -\*-@\1@