diff --git a/docs/Doxyfile b/docs/Doxyfile
index 1e208e6..dbd5463 100644
--- a/docs/Doxyfile
+++ b/docs/Doxyfile
@@ -829,7 +829,7 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = "./"
+INPUT                  = "./include"
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
diff --git a/docs/source/conf.py b/docs/source/conf.py
index d28509a..7d56fd7 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -27,8 +27,8 @@ extensions = [
     'breathe',
 ]
 
-breathe_projects = {"DGEMS": "../build/xml"}
-breathe_default_project = "DGEMS"
+breathe_projects = {"CudaTools": "../build/xml"}
+breathe_default_project = "CudaTools"
 
 bibtex_bibfiles = ['refs.bib']
 
diff --git a/docs/source/core.rst b/docs/source/core.rst
index 0ef435b..8d34452 100644
--- a/docs/source/core.rst
+++ b/docs/source/core.rst
@@ -42,6 +42,7 @@ Host-Device Automation
 Compilation Options
 -------------------
 .. doxygendefine:: CUDATOOLS_ARRAY_MAX_AXES
+.. doxygendefine:: CUDATOOLS_USE_EIGEN
 
 Macro Functions
 ===============
diff --git a/include/Array.h b/include/Array.h
index 3772a8d..cd6e646 100644
--- a/include/Array.h
+++ b/include/Array.h
@@ -4,7 +4,7 @@
 #include "Core.h"
 #include "Macros.h"
 #include "Types.h"
-#include <Eigen/Dense>
+
 #include <cmath>
 #include <complex>
 #include <cstdlib>
@@ -12,6 +12,10 @@
 #include <random>
 #include <type_traits>
 
+#ifdef CUDATOOLS_USE_EIGEN
+#include <Eigen/Dense>
+#endif
+
 #ifdef DEVICE
 #define POINTER pDevice
 #else
@@ -22,6 +26,7 @@ using namespace CudaTools::Types;
 
 namespace CudaTools {
 
+#ifdef CUDATOOLS_USE_EIGEN
 template <typename T>
 using EigenMat = Eigen::Matrix<T, Eigen::Dynamic, Eigen::Dynamic, Eigen::ColMajor>;
 template <typename T> using EigenMapMat = Eigen::Map<EigenMat<T>>;
@@ -30,6 +35,7 @@ template <typename T> using ConstEigenMapMat = Eigen::Map<const EigenMat<T>>;
 template <typename T> struct EigenAdaptConst_S { typedef EigenMapMat<T> type; };
 template <typename T> struct EigenAdaptConst_S<const T> { typedef ConstEigenMapMat<T> type; };
 template <typename T> using EigenAdaptConst = typename EigenAdaptConst_S<T>::type;
+#endif
 
 template <typename T> class Array;
 
@@ -496,6 +502,7 @@ template <typename T> class Array {
      */
     HD void flatten() { reshape({mShape.mItems}); };
 
+#ifdef CUDATOOLS_USE_EIGEN
     /**
      * Returns the Eigen::Map of this Array.
      */
@@ -507,6 +514,7 @@ template <typename T> class Array {
         return EigenAdaptConst<ComplexConversion<T>>((ComplexConversion<T>*)POINTER, mShape.rows(),
                                                      mShape.cols());
     };
+#endif
 
     /**
      * Gets the Shape of the Array.
diff --git a/include/BLAS.h b/include/BLAS.h
index e315b2a..f25742b 100644
--- a/include/BLAS.h
+++ b/include/BLAS.h
@@ -1,6 +1,10 @@
 #ifndef CUDATOOLS_BLAS_H
 #define CUDATOOLS_BLAS_H
 
+#ifndef CUDATOOLS_USE_EIGEN
+#error "Cannot use CudaTools BLAS.h header without Eigen."
+#endif
+
 #include "Array.h"
 #include "Core.h"
 #include "Macros.h"
diff --git a/include/Macros.h b/include/Macros.h
index ff826e7..1b6f08d 100644
--- a/include/Macros.h
+++ b/include/Macros.h
@@ -49,6 +49,12 @@
  */
 #define SHARED
 
+/**
+ * \def CUDATOOLS_USE_EIGEN
+ * Compile the CudaTools library with Eigen support.
+ */
+#define CUDATOOLS_USE_EIGEN
+
 /**
  * \def KERNEL(call, settings, ...)
  * Used to call a CUDA kernel.