X-Git-Url: https://git.deb.at/w?a=blobdiff_plain;f=filter.c;h=c5c69cfb7a07cac41661187ee330124f74c1c730;hb=f937f7246af81dac1401685e3e3384646bdd5ccd;hp=848aab94050d31625baae85119077ed15fb656d6;hpb=41a02e0be1194fa46951a7c376888e9693631d49;p=pkg%2Fabook.git

diff --git a/filter.c b/filter.c
index 848aab9..c5c69cf 100644
--- a/filter.c
+++ b/filter.c
@@ -7,6 +7,8 @@
  * Copyright (C) Jaakko Heinonen
  */
 
+#define _GNU_SOURCE
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>