From 8573ea39e440e1b318d912b254cdba8205437797 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= <mat@brain-dump.org>
Date: Wed, 29 Apr 2020 07:36:42 +0200
Subject: build: fix _XOPEN_SOURCE redefinition warning

Was also reported in #780.
---
 configure | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'configure')

diff --git a/configure b/configure
index 7b1c054..b86bb34 100755
--- a/configure
+++ b/configure
@@ -220,7 +220,7 @@ tryflag   CFLAGS_TRY  -Werror=unused-command-line-argument
 tryldflag LDFLAGS_TRY -Werror=unknown-warning-option
 tryldflag LDFLAGS_TRY -Werror=unused-command-line-argument
 
-CFLAGS_STD="-std=c99 -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -DNDEBUG -D_FORTIFY_SOURCE=2"
+CFLAGS_STD="-std=c99 -D_POSIX_C_SOURCE=200809L -U_XOPEN_SOURCE -D_XOPEN_SOURCE=700 -DNDEBUG -D_FORTIFY_SOURCE=2"
 LDFLAGS_STD="-lc"
 
 OS=$(uname)
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