define bsd source to get access to chroot

[rrdtool.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 791243646d9f0a64efda93a3f1ffa5b1cfa29185..494a06aa2f59da0c1d1197d63bfa41186ffcdddb 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -60,8 +60,9 @@ AH_TOP([
 
 AH_BOTTOM([
 /* make sure that we pickup the correct stuff from all headers */
-#define _XOPEN_SOURCE 600
 #ifdef HAVE_FEATURES_H
+#define _XOPEN_SOURCE 600
+#define _BSD_SOURCE 1
 # include <features.h>
 #endif
 
@@ -91,6 +92,7 @@ AH_BOTTOM([
 #ifdef HAVE_SYS_MMAN_H
 # include <sys/mman.h>
 #endif
+
 #if !defined HAVE_MADVISE && defined HAVE_POSIX_MADVISE
 /* use posix_madvise family */
 # define madvise posix_madvise