From b5a8538baaad95f31fcd788042654c2949c2850d Mon Sep 17 00:00:00 2001
From: Fernando Iglesias <fernando.iglesiasg@gmail.com>
Date: Sun, 27 Jul 2014 15:10:29 +0200
Subject: [PATCH] Guard LDA in GUIClassifier against missing Eigen.

---
 src/shogun/ui/GUIClassifier.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/shogun/ui/GUIClassifier.cpp b/src/shogun/ui/GUIClassifier.cpp
index 237763a789e..0e9dd2218e2 100644
--- a/src/shogun/ui/GUIClassifier.cpp
+++ b/src/shogun/ui/GUIClassifier.cpp
@@ -279,13 +279,15 @@ bool CGUIClassifier::new_classifier(char* name, int32_t d, int32_t from_d)
 		((CLibLinear*) classifier)->set_epsilon(svm_epsilon);
 		((CLibLinear*) classifier)->set_bias_enabled(svm_use_bias);
 	}
+#endif //HAVE_LAPACK
+#ifdef HAVE_EIGEN
 	else if (strcmp(name,"LDA")==0)
 	{
 		SG_UNREF(classifier);
 		classifier= new CLDA();
 		SG_INFO("created LDA object\n")
 	}
-#endif //HAVE_LAPACK
+#endif //HAVE_EIGEN
 #ifdef USE_CPLEX
 	else if (strcmp(name,"LPM")==0)
 	{
@@ -740,7 +742,7 @@ bool CGUIClassifier::train_linear(float64_t gamma)
 		((CPerceptron*) classifier)->set_max_iter(perceptron_maxiter);
 	}
 
-#ifdef HAVE_LAPACK
+#ifdef HAVE_EIGEN
 	if (ctype==CT_LDA)
 	{
 		if (trainfeatures->get_feature_type()!=F_DREAL ||
@@ -748,7 +750,7 @@ bool CGUIClassifier::train_linear(float64_t gamma)
 		SG_ERROR("LDA requires train features of class SIMPLE type REAL.\n")
 		((CLDA*) classifier)->set_gamma(gamma);
 	}
-#endif
+#endif //HAVE_EIGEN
 
 	if (ctype==CT_SVMOCAS)
 		((CSVMOcas*) classifier)->set_C(svm_C1, svm_C2);