autoupdate

diff --git a/doc/install.texi b/doc/install.texi
index f4c8c4caaaf68ef36bf21ebb36b078b9b5911486..d498639ff8c3b9692220660176d18429e8ef2fbf 100644 (file)
--- a/doc/install.texi
+++ b/doc/install.texi
@@ -188,7 +188,7 @@ not installed, it is recommended to use the following options in order to
 use an ANSI C compiler:
 
 @example
-./configure CC="cc -Ae"
+./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
 @end example
 
 @noindent