$OpenBSD: patch-modules_ml_src_gbt_cpp,v 1.2 2011/07/16 22:43:57 espie Exp $
--- modules/ml/src/gbt.cpp.orig	Sun Dec  5 04:35:25 2010
+++ modules/ml/src/gbt.cpp	Sat Jul 16 23:20:10 2011
@@ -11,7 +11,7 @@ using namespace std;
 #define CV_CMP_FLOAT(a,b) ((a) < (b))
 static CV_IMPLEMENT_QSORT_EX( icvSortFloat, float, CV_CMP_FLOAT, float)
 
-#if ANDROID
+#if defined(ANDROID) || defined(__OpenBSD__)
 #define expl(x) exp(x)
 #endif
 
