diff --git a/eigen-3.1.2/Makefile b/eigen-3.1.2/Makefile
new file mode 100644
index 0000000..f1604e1
--- /dev/null
+++ b/eigen-3.1.2/Makefile
@@ -0,0 +1,80 @@
+#
+#    Copyright (c) 2010-2011 Nest, Inc.
+#    All rights reserved.
+#
+#    This document is the property of Nest. It is considered
+#    confidential and proprietary information.
+#
+#    This document may not be reproduced or transmitted in any form,
+#    in whole or in part, without the express written permission of
+#    Nest.
+#
+#    Description:
+#    This Makefile is used to build eigen, a template based math library
+#
+
+BuildConfigSpecialized	:= No
+BuildProductSpecialized	:= No
+
+include pre.mak
+
+PackageName		:= eigen
+
+PackageKey          := 5097c01bcdc4
+PackageExtension	:= tar.gz
+PackageSeparator	:= -
+
+PackageArchive		:= $(PackageVersion).$(PackageExtension)
+PackageSourceDir	:= $(PackageName)$(PackageSeparator)$(PackageName)$(PackageSeparator)$(PackageKey)
+
+CleanPaths		+= $(PackageLicenseFile)
+
+all: $(PackageDefaultGoal)
+
+# Generate the package license contents.
+
+$(PackageSourceDir)/COPYING.MPL2: source
+
+$(PackageLicenseFile): $(PackageSourceDir)/COPYING.MPL2
+	$(copy-result)
+
+# Extract the source from the archive and apply patches, if any.
+
+$(PackageSourceDir): $(PackageArchive) $(PackagePatchPaths)
+	$(expand-and-patch-package)
+
+# Prepare the sources.
+
+.PHONY: source
+source: | ${PackageSourceDir}
+
+# Patch the sources, if necessary.
+
+.PHONY: patch
+patch: source
+
+# Configure the source for building.
+
+.PHONY: configure
+configure: patch
+
+.PHONY: build
+build: configure | $(BuildDirectory)
+
+
+# Stage the build to a temporary installation area.
+#
+# We have to unset MAKEFLAGS since they confuse the package build otherwise.
+.PHONY filestocopy:
+	cp -r ${call Slashify,${CURDIR}}${call Slashify,${PackageSourceDir}} ${ResultDirectory}
+
+
+.PHONY: stage
+stage: build filestocopy | $(ResultDirectory)
+
+clean:
+	$(Verbose)$(RM) $(RMFLAGS) -r $(PackageSourceDir)
+	$(Verbose)$(RM) $(RMFLAGS) -r $(BuildDirectory)
+	$(Verbose)$(RM) $(RMFLAGS) -r $(ResultDirectory)
+
+include post.mak
diff --git a/eigen-3.1.2/eigen.url b/eigen-3.1.2/eigen.url
new file mode 100644
index 0000000..c69959a
--- /dev/null
+++ b/eigen-3.1.2/eigen.url
@@ -0,0 +1 @@
+https://bitbucket.org/eigen/eigen/get/3.1.2.tar.gz
diff --git a/eigen-3.1.2/eigen.version b/eigen-3.1.2/eigen.version
new file mode 100644
index 0000000..ef538c2
--- /dev/null
+++ b/eigen-3.1.2/eigen.version
@@ -0,0 +1 @@
+3.1.2