From 3134de122dedb2523879e1506162b2513eaf1e1d Mon Sep 17 00:00:00 2001
From: Randy Palamar <palamar@ualberta.ca>
Date: Wed, 16 Aug 2023 09:13:29 -0600
Subject: build: stop setting _POSIX_C_SOURCE

from feature_test_macros(7):

> Defining _XOPEN_SOURCE with a value of 700 or greater produces the
> same effects as defining _POSIX_C_SOURCE with a value of 200809L or
> greater.

Depending on the configuration and system pkg-conf files there can be
redefinition warnings. Rather than patching with a -U_POSIX_C_SOURCE
it can just be dropped instead.
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 8e6676c..13fa0ea 100644
--- a/Makefile
+++ b/Makefile
@@ -46,7 +46,7 @@ CONFIG_TRE ?= 0
 CONFIG_ACL ?= 0
 CONFIG_SELINUX ?= 0
 
-CFLAGS_STD ?= -std=c99 -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -DNDEBUG -MMD
+CFLAGS_STD ?= -std=c99 -U_XOPEN_SOURCE -D_XOPEN_SOURCE=700 -DNDEBUG -MMD
 CFLAGS_STD += -DVERSION=\"${VERSION}\"
 LDFLAGS_STD ?= -lc
 
-- 
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