part 2 of the reorganization. Benefits/changes:

1) Eigen2 co-installable with Eigen1 without conflict, without affecting programs including either.
2) #include<Eigen/Core> without the .h without conflict with the Core/ directory
3) Uniformize coding style of the CMakeLists.

Eigen/CMakeLists.txt

@@ -8,7 +8,7 @@ SET(INCLUDE_INSTALL_DIR
 
 INSTALL(FILES 
   ${Eigen_SRCS}
-  DESTINATION ${INCLUDE_INSTALL_DIR}
+  DESTINATION ${INCLUDE_INSTALL_DIR}/Eigen
   )
 
-add_subdirectory(Core)
+ADD_SUBDIRECTORY(src)

Eigen/Core

@@ -0,0 +1,42 @@
+#include <iostream>
+#include <complex>
+#include <cassert>
+
+namespace Eigen {
+
+#include "src/Core/Util.h"
+#include "src/Core/NumTraits.h"
+#include "src/Core/MathFunctions.h"
+#include "src/Core/MatrixBase.h"
+#include "src/Core/Coeffs.h"
+#include "src/Core/OperatorEquals.h"
+#include "src/Core/MatrixRef.h"
+#include "src/Core/MatrixStorage.h"
+#include "src/Core/Matrix.h"
+#include "src/Core/Cast.h"
+#include "src/Core/Eval.h"
+#include "src/Core/ScalarMultiple.h"
+#include "src/Core/Sum.h"
+#include "src/Core/Difference.h"
+#include "src/Core/Product.h"
+#include "src/Core/Opposite.h"
+#include "src/Core/Row.h"
+#include "src/Core/Column.h"
+#include "src/Core/DynBlock.h"
+#include "src/Core/Block.h"
+#include "src/Core/Minor.h"
+#include "src/Core/Transpose.h"
+#include "src/Core/Conjugate.h"
+#include "src/Core/Trace.h"
+#include "src/Core/Dot.h"
+#include "src/Core/Random.h"
+#include "src/Core/Zero.h"
+#include "src/Core/Ones.h"
+#include "src/Core/DiagonalMatrix.h"
+#include "src/Core/DiagonalCoeffs.h"
+#include "src/Core/Identity.h"
+#include "src/Core/Fuzzy.h"
+#include "src/Core/Map.h"
+#include "src/Core/IO.h"
+
+} // namespace Eigen

Eigen/Core.h

@@ -1,42 +0,0 @@
-#include <iostream>
-#include <complex>
-#include <cassert>
-
-namespace Eigen {
-
-#include "Core/Util.h"
-#include "Core/NumTraits.h"
-#include "Core/MathFunctions.h"
-#include "Core/MatrixBase.h"
-#include "Core/Coeffs.h"
-#include "Core/OperatorEquals.h"
-#include "Core/MatrixRef.h"
-#include "Core/MatrixStorage.h"
-#include "Core/Matrix.h"
-#include "Core/Cast.h"
-#include "Core/Eval.h"
-#include "Core/ScalarMultiple.h"
-#include "Core/Sum.h"
-#include "Core/Difference.h"
-#include "Core/Product.h"
-#include "Core/Opposite.h"
-#include "Core/Row.h"
-#include "Core/Column.h"
-#include "Core/DynBlock.h"
-#include "Core/Block.h"
-#include "Core/Minor.h"
-#include "Core/Transpose.h"
-#include "Core/Conjugate.h"
-#include "Core/Trace.h"
-#include "Core/Dot.h"
-#include "Core/Random.h"
-#include "Core/Zero.h"
-#include "Core/Ones.h"
-#include "Core/DiagonalMatrix.h"
-#include "Core/DiagonalCoeffs.h"
-#include "Core/Identity.h"
-#include "Core/Fuzzy.h"
-#include "Core/Map.h"
-#include "Core/IO.h"
-
-} // namespace Eigen

Eigen/src/CMakeLists.txt

@@ -0,0 +1 @@
+ADD_SUBDIRECTORY(Core)

Eigen/src/Core/CMakeLists.txt

@@ -2,5 +2,5 @@ FILE(GLOB Eigen_Core_SRCS "*.h")
 
 INSTALL(FILES 
   ${Eigen_Core_SRCS}
-  DESTINATION ${INCLUDE_INSTALL_DIR}/Core
+  DESTINATION ${INCLUDE_INSTALL_DIR}/Eigen/src/Core
   )