1 files changed, 3 insertions, 0 deletions
diff --git a/configure b/configure
index dc500ca8e..ea4314842 100755
--- a/configure
+++ b/configure
@@ -1023,6 +1023,9 @@ EOF
 			print FILEHANDLE "#define IS_CYGWIN\n";
 			print FILEHANDLE "#ifndef FD_SETSIZE\n#define FD_SETSIZE	1024\n#endif\n";
 		}
+		if ($config{OSNAME} eq "MINGW32") {
+			print FILEHANDLE "#define IS_MINGW\n";
+		}
 		if ($config{OSNAME} eq "CYG-STATIC") {
 			print FILEHANDLE "#ifndef FD_SETSIZE\n#define FD_SETSIZE    1024\n#endif\n";
 		}