check for define PATH_MAX before referencing it

1 files changed, 1 insertions, 1 deletions

diff --git a/Xwindows.h b/Xwindows.h
index 129c78e..7fb9840 100644
--- a/Xwindows.h
+++ b/Xwindows.h
@@ -68,7 +68,7 @@ The Open Group.
 
 #define sleep(x) Sleep(1000*x)
 
-#if defined(WIN32) && PATH_MAX < 1024
+#if defined(WIN32) && (!defined(PATH_MAX) || PATH_MAX < 1024)
 #undef PATH_MAX
 #define PATH_MAX 1024
 #endif