diff --git a/Eigen/src/Core/CMakeLists.txt b/Eigen/src/Core/CMakeLists.txt
index 9af605dd4..fb745a252 100644
--- a/Eigen/src/Core/CMakeLists.txt
+++ b/Eigen/src/Core/CMakeLists.txt
@@ -5,4 +5,5 @@ INSTALL(FILES
   DESTINATION ${INCLUDE_INSTALL_DIR}/Eigen/src/Core
   )
 
-ADD_SUBDIRECTORY(util)
\ No newline at end of file
+ADD_SUBDIRECTORY(util)
+ADD_SUBDIRECTORY(arch)
\ No newline at end of file
diff --git a/Eigen/src/Core/SolveTriangular.h b/Eigen/src/Core/SolveTriangular.h
index ccb13991c..44edb46c1 100755
--- a/Eigen/src/Core/SolveTriangular.h
+++ b/Eigen/src/Core/SolveTriangular.h
@@ -71,10 +71,12 @@ struct ei_solve_triangular_selector<Lhs,Rhs,UpLo,RowMajor>
     {
       // process first rows using the non block version
       if(!(Lhs::Flags & UnitDiagBit))
+      {
         if (IsLower)
           other.coeffRef(0,c) = other.coeff(0,c)/lhs.coeff(0, 0);
         else
           other.coeffRef(size-1,c) = other.coeff(size-1, c)/lhs.coeff(size-1, size-1);
+      }
       for(int i=(IsLower ? 1 : size-2); IsLower ? i<blockyStart : i>blockyStart; i += (IsLower ? 1 : -1) )
       {
         Scalar tmp = other.coeff(i,c)
diff --git a/Eigen/src/Core/arch/AltiVec/CMakeLists.txt b/Eigen/src/Core/arch/AltiVec/CMakeLists.txt
new file mode 100644
index 000000000..dfb1d575b
--- /dev/null
+++ b/Eigen/src/Core/arch/AltiVec/CMakeLists.txt
@@ -0,0 +1,6 @@
+FILE(GLOB Eigen_Core_arch_AltiVec_SRCS "*.h")
+
+INSTALL(FILES
+  ${Eigen_Core_arch_AltiVec_SRCS}
+  DESTINATION ${INCLUDE_INSTALL_DIR}/Eigen/src/Core/arch/AltiVec
+)
\ No newline at end of file
diff --git a/Eigen/src/Core/arch/CMakeLists.txt b/Eigen/src/Core/arch/CMakeLists.txt
new file mode 100644
index 000000000..8ddba284e
--- /dev/null
+++ b/Eigen/src/Core/arch/CMakeLists.txt
@@ -0,0 +1,2 @@
+ADD_SUBDIRECTORY(SSE)
+ADD_SUBDIRECTORY(AltiVec)
\ No newline at end of file
diff --git a/Eigen/src/Core/arch/SSE/CMakeLists.txt b/Eigen/src/Core/arch/SSE/CMakeLists.txt
new file mode 100644
index 000000000..ee0d660ce
--- /dev/null
+++ b/Eigen/src/Core/arch/SSE/CMakeLists.txt
@@ -0,0 +1,6 @@
+FILE(GLOB Eigen_Core_arch_SSE_SRCS "*.h")
+
+INSTALL(FILES
+  ${Eigen_Core_arch_SSE_SRCS}
+  DESTINATION ${INCLUDE_INSTALL_DIR}/Eigen/src/Core/arch/SSE
+)
\ No newline at end of file