--- FileUtils.cpp	2012-06-26 15:08:14.515494317 -0700
+++ /homes/biocbuild/work/FileUtils.cpp	2012-06-26 15:08:51.681532891 -0700
@@ -29,12 +29,15 @@
 
 #ifdef _MSC_VER
 #include <direct.h>
-#define 	S_ISDIR(m)   (((m) & S_IFMT) == S_IFDIR)
+#define         S_ISDIR(m)   (((m) & S_IFMT) == S_IFDIR)
 #else
+#include <unistd.h>
 #include <dirent.h>
 #endif
 
 
+
+
 using namespace affymetrix_calvin_utilities;
 using namespace std;
