1 files changed, 1 insertions, 1 deletions
diff --git a/configure b/configure
index 07608c4df3..14642faee9 100755
--- a/configure
+++ b/configure
@@ -1682,7 +1682,7 @@ SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
 AS_O='-o $@'
 CC_O='-o $@'
 
-host_cflags='-D_ISOC99_SOURCE -O3 -g'
+host_cflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600 -O3 -g'
 host_libs='-lm'
 
 target_path='$(CURDIR)'