Switch _XOPEN_SOURCE to 700. You win, skarnet.

Noam Preil · Noam Preil · commit 5e10d0658bc2 · 2020-07-08T10:54:51.000-04:00
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 2.8.5)
 
 project(scas C)
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -pedantic -std=c99 -D_XOPEN_SOURCE=500")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -pedantic -std=c99 -D_XOPEN_SOURCE=700")
 set(CMAKE_C_FLAGS_DEVEL "-Werror -g -Og")
 
 if(WIN32)
diff --git a/scas/flags.c b/scas/flags.c
@@ -1,4 +1,3 @@
-#define _XOPEN_SOURCE
 #include "flags.h"
 #include <stdio.h>
 #include <string.h>
