From b09f2a0495071a068c2b6b36084c974acf7aab9b Mon Sep 17 00:00:00 2001
From: Alexander Gottwald <alexander.gottwald@s1999.tu-chemnitz.de>
Date: Mon, 22 Nov 2004 16:04:04 +0000
Subject: [PATCH] Windows does not have ffs() implementation. added one Enable
 RootlessSafeAlpha and RootlessAcceleration for the Windows port too

---
 mi/mibitblt.c                   | 15 +++++++++++++++
 miext/rootless/rootlessConfig.h |  2 +-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/mi/mibitblt.c b/mi/mibitblt.c
index 82e34cdbeb..57d46ee38d 100644
--- a/mi/mibitblt.c
+++ b/mi/mibitblt.c
@@ -61,6 +61,21 @@ SOFTWARE.
 #include "Xmd.h"
 #include "servermd.h"
 
+#ifdef WIN32
+static 
+int ffs(int word) {
+     int i;
+     if (!word)
+         return 0;
+     i = 0;
+     for (;;)
+     {
+         if (((1 << i++) & word) != 0)
+             return i;
+     }
+}
+#endif
+
 /* MICOPYAREA -- public entry for the CopyArea request 
  * For each rectangle in the source region
  *     get the pixels with GetSpans
diff --git a/miext/rootless/rootlessConfig.h b/miext/rootless/rootlessConfig.h
index 1ee872ad8e..ccd0cc776f 100644
--- a/miext/rootless/rootlessConfig.h
+++ b/miext/rootless/rootlessConfig.h
@@ -47,7 +47,7 @@
 
 #endif /* __DARWIN__ */
 
-#ifdef __CYGWIN__
+#if defined(__CYGWIN__) || defined(WIN32)
 
 # define ROOTLESS_ACCEL YES
 # define ROOTLESS_GLOBAL_COORDS TRUE