diff --git a/sci-libs/mlpack/mlpack-2.2.5.recipe b/sci-libs/mlpack/mlpack-2.2.5.recipe
new file mode 100644
index 000000000..9cd04a54c
--- /dev/null
+++ b/sci-libs/mlpack/mlpack-2.2.5.recipe
@@ -0,0 +1,192 @@
+SUMMARY="Scalable c++ machine learning library"
+DESCRIPTION="mlpack is an intuitive, fast, scalable C++ machine learning \
+library, meant to be a machine learning analog to LAPACK. It aims to implement \
+a wide array of machine learning methods and functions as a \"swiss army \
+knife\" for machine learning researchers."
+HOMEPAGE="http://www.mlpack.org/"
+COPYRIGHT="2011-2017 mlpack Team"
+LICENSE="BSD (3-clause)"
+REVISION="1"
+SOURCE_URI="https://github.com/mlpack/mlpack/archive/mlpack-$portVersion.tar.gz"
+CHECKSUM_SHA256="6bba8b28a50dc3b8afacd357aca57a658cf5b8d90a57d38f357d7e2eafcf09bb"
+SOURCE_DIR="mlpack-mlpack-$portVersion"
+PATCHES="mlpack-$portVersion.patchset"
+
+ARCHITECTURES="!x86_gcc2 x86 x86_64"
+SECONDARY_ARCHITECTURES="?x86"
+
+PROVIDES="
+	mlpack$secondaryArchSuffix = $portVersion
+	cmd:mlpack_adaboost$secondaryArchSuffix
+	cmd:mlpack_allkfn$secondaryArchSuffix
+	cmd:mlpack_allknn$secondaryArchSuffix
+	cmd:mlpack_allkrann$secondaryArchSuffix
+	cmd:mlpack_approx_kfn$secondaryArchSuffix
+	cmd:mlpack_cf$secondaryArchSuffix
+	cmd:mlpack_dbscan$secondaryArchSuffix
+	cmd:mlpack_decision_stump$secondaryArchSuffix
+	cmd:mlpack_decision_tree$secondaryArchSuffix
+	cmd:mlpack_det$secondaryArchSuffix
+	cmd:mlpack_emst$secondaryArchSuffix
+	cmd:mlpack_fastmks$secondaryArchSuffix
+	cmd:mlpack_gmm_generate$secondaryArchSuffix
+	cmd:mlpack_gmm_probability$secondaryArchSuffix
+	cmd:mlpack_gmm_train$secondaryArchSuffix
+	cmd:mlpack_hmm_generate$secondaryArchSuffix
+	cmd:mlpack_hmm_loglik$secondaryArchSuffix
+	cmd:mlpack_hmm_train$secondaryArchSuffix
+	cmd:mlpack_hmm_viterbi$secondaryArchSuffix
+	cmd:mlpack_hoeffding_tree$secondaryArchSuffix
+	cmd:mlpack_kernel_pca$secondaryArchSuffix
+	cmd:mlpack_kfn$secondaryArchSuffix
+	cmd:mlpack_kmeans$secondaryArchSuffix
+	cmd:mlpack_knn$secondaryArchSuffix
+	cmd:mlpack_krann$secondaryArchSuffix
+	cmd:mlpack_lars$secondaryArchSuffix
+	cmd:mlpack_linear_regression$secondaryArchSuffix
+	cmd:mlpack_local_coordinate_coding$secondaryArchSuffix
+	cmd:mlpack_logistic_regression$secondaryArchSuffix
+	cmd:mlpack_lsh$secondaryArchSuffix
+	cmd:mlpack_mean_shift$secondaryArchSuffix
+	cmd:mlpack_nbc$secondaryArchSuffix
+	cmd:mlpack_nca$secondaryArchSuffix
+	cmd:mlpack_nmf$secondaryArchSuffix
+	cmd:mlpack_pca$secondaryArchSuffix
+	cmd:mlpack_perceptron$secondaryArchSuffix
+	cmd:mlpack_preprocess_binarize$secondaryArchSuffix
+	cmd:mlpack_preprocess_describe$secondaryArchSuffix
+	cmd:mlpack_preprocess_imputer$secondaryArchSuffix
+	cmd:mlpack_preprocess_split$secondaryArchSuffix
+	cmd:mlpack_radical$secondaryArchSuffix
+	cmd:mlpack_range_search$secondaryArchSuffix
+	cmd:mlpack_softmax_regression$secondaryArchSuffix
+	cmd:mlpack_sparse_coding$secondaryArchSuffix
+	lib:libmlpack$secondaryArchSuffix = $portVersion compat >= 2.2
+	"
+REQUIRES="
+	haiku$secondaryArchSuffix
+	lib:libarmadillo$secondaryArchSuffix
+	lib:libboost_program_options$secondaryArchSuffix
+	lib:libboost_serialization$secondaryArchSuffix
+	lib:libboost_system$secondaryArchSuffix
+	lib:libboost_unit_test_framework$secondaryArchSuffix
+	lib:libgomp$secondaryArchSuffix
+	lib:libhdf5$secondaryArchSuffix
+	lib:liblapack$secondaryArchSuffix
+	lib:libopenblas$secondaryArchSuffix
+	lib:libsuperlu$secondaryArchSuffix
+	"
+
+PROVIDES_devel="
+	mlpack${secondaryArchSuffix}_devel = $portVersion
+	devel:libmlpack$secondaryArchSuffix = $portVersion compat >= 2.2
+	"
+REQUIRES_devel="
+	mlpack$secondaryArchSuffix == $portVersion base
+	"
+
+BUILD_REQUIRES="
+	haiku${secondaryArchSuffix}_devel
+	devel:libarmadillo$secondaryArchSuffix
+	devel:libboost_program_options$secondaryArchSuffix
+	devel:libboost_serialization$secondaryArchSuffix
+	devel:libboost_system$secondaryArchSuffix
+	devel:libboost_unit_test_framework$secondaryArchSuffix
+	devel:libhdf5$secondaryArchSuffix
+	devel:liblapack$secondaryArchSuffix
+	devel:libopenblas$secondaryArchSuffix
+	devel:libsuperlu$secondaryArchSuffix
+	"
+BUILD_PREREQUIRES="
+	cmd:cmake
+	cmd:g++$secondaryArchSuffix
+	cmd:make
+	cmd:pkg_config$secondaryArchSuffix
+	cmd:strip$secondaryArchSuffix
+	"
+
+defineDebugInfoPackage mlpack$secondaryArchSuffix \
+	$libDir/libmlpack.so.2.2 \
+	$binDir/mlpack_adaboost$secondaryArchSuffix \
+	$binDir/mlpack_allkfn$secondaryArchSuffix \
+	$binDir/mlpack_allknn$secondaryArchSuffix \
+	$binDir/mlpack_allkrann$secondaryArchSuffix \
+	$binDir/mlpack_approx_kfn$secondaryArchSuffix \
+	$binDir/mlpack_cf$secondaryArchSuffix \
+	$binDir/mlpack_dbscan$secondaryArchSuffix \
+	$binDir/mlpack_decision_stump$secondaryArchSuffix \
+	$binDir/mlpack_decision_tree$secondaryArchSuffix \
+	$binDir/mlpack_det$secondaryArchSuffix \
+	$binDir/mlpack_emst$secondaryArchSuffix \
+	$binDir/mlpack_fastmks$secondaryArchSuffix \
+	$binDir/mlpack_gmm_generate$secondaryArchSuffix \
+	$binDir/mlpack_gmm_probability$secondaryArchSuffix \
+	$binDir/mlpack_gmm_train$secondaryArchSuffix \
+	$binDir/mlpack_hmm_generate$secondaryArchSuffix \
+	$binDir/mlpack_hmm_loglik$secondaryArchSuffix \
+	$binDir/mlpack_hmm_train$secondaryArchSuffix \
+	$binDir/mlpack_hmm_viterbi$secondaryArchSuffix \
+	$binDir/mlpack_hoeffding_tree$secondaryArchSuffix \
+	$binDir/mlpack_kernel_pca$secondaryArchSuffix \
+	$binDir/mlpack_kfn$secondaryArchSuffix \
+	$binDir/mlpack_kmeans$secondaryArchSuffix \
+	$binDir/mlpack_knn$secondaryArchSuffix \
+	$binDir/mlpack_krann$secondaryArchSuffix \
+	$binDir/mlpack_lars$secondaryArchSuffix \
+	$binDir/mlpack_linear_regression$secondaryArchSuffix \
+	$binDir/mlpack_local_coordinate_coding$secondaryArchSuffix \
+	$binDir/mlpack_logistic_regression$secondaryArchSuffix \
+	$binDir/mlpack_lsh$secondaryArchSuffix \
+	$binDir/mlpack_mean_shift$secondaryArchSuffix \
+	$binDir/mlpack_nbc$secondaryArchSuffix \
+	$binDir/mlpack_nca$secondaryArchSuffix \
+	$binDir/mlpack_nmf$secondaryArchSuffix \
+	$binDir/mlpack_pca$secondaryArchSuffix \
+	$binDir/mlpack_perceptron$secondaryArchSuffix \
+	$binDir/mlpack_preprocess_binarize$secondaryArchSuffix \
+	$binDir/mlpack_preprocess_describe$secondaryArchSuffix \
+	$binDir/mlpack_preprocess_imputer$secondaryArchSuffix \
+	$binDir/mlpack_preprocess_split$secondaryArchSuffix \
+	$binDir/mlpack_radical$secondaryArchSuffix \
+	$binDir/mlpack_range_search$secondaryArchSuffix \
+	$binDir/mlpack_softmax_regression$secondaryArchSuffix \
+	$binDir/mlpack_sparse_coding$secondaryArchSuffix
+
+BUILD()
+{
+	mkdir -p build && cd "$_"
+
+	cmake .. \
+		-DCMAKE_INSTALL_BINDIR=$binDir \
+		-DCMAKE_INSTALL_DATADIR=$dataDir \
+		-DCMAKE_INSTALL_DOCDIR=$docDir \
+		-DCMAKE_INSTALL_INCLUDEDIR=$includeDir \
+		-DCMAKE_INSTALL_LIBDIR=$libDir \
+		-DCMAKE_INSTALL_MANDIR=$manDir
+
+	# mlpack easily eats up all your ram, so don't do parallel jobs!
+	make
+}
+
+INSTALL()
+{
+	cd build
+	make install $jobArgs
+
+	mkdir -p $includeDir
+	mv $prefix/include/* $includeDir/
+	rmdir $prefix/include
+
+	prepareInstalledDevelLib libmlpack
+
+	fixPkgconfig
+
+	packageEntries devel \
+		$developDir
+}
+
+TEST()
+{
+	cd build
+	make test
+}
diff --git a/sci-libs/mlpack/patches/mlpack-2.2.5.patchset b/sci-libs/mlpack/patches/mlpack-2.2.5.patchset
new file mode 100644
index 000000000..515a4a4f1
--- /dev/null
+++ b/sci-libs/mlpack/patches/mlpack-2.2.5.patchset
@@ -0,0 +1,22 @@
+From 371ded568630d4a1633585d310511fd2ee8a5236 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Zolt=C3=A1n=20Mizsei?= <zmizsei@extrowerk.com>
+Date: Tue, 12 Dec 2017 10:28:32 +0100
+Subject: Haiku got no -lrt
+
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index ae70f2d..7ce146e 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -121,7 +121,7 @@ if(BUILD_WITH_COVERAGE)
+ endif()
+ 
+ # For clock_gettime().
+-if (UNIX AND NOT APPLE)
++if (UNIX AND NOT APPLE AND NOT HAIKU)
+   set(MLPACK_LIBRARIES ${MLPACK_LIBRARIES} "rt")
+ endif ()
+ 
+-- 
+2.15.0
+