1 files changed, 1 insertions, 4 deletions
diff --git a/configure.ac b/configure.ac
index a4074ed..c1de4d8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -254,15 +254,12 @@ case "$host_os" in
 *-android)
     android=yes
     ;;
-linux*|*-gnu*|gnu*)
+linux*|*-gnu*|gnu*|cygwin*)
     DEFINES="$DEFINES -D_GNU_SOURCE"
     ;;
 solaris*)
     DEFINES="$DEFINES -DSVR4"
     ;;
-cygwin*)
-    DEFINES="$DEFINES -D_XOPEN_SOURCE=700"
-    ;;
 esac
 
 AM_CONDITIONAL(HAVE_ANDROID, test "x$android" = xyes)