From 16d6068bfd3579531501cde118ddcdd5ee1786b9 Mon Sep 17 00:00:00 2001
From: Mark Charlebois <charlebm@gmail.com>
Date: Fri, 24 Apr 2015 10:52:07 -0700
Subject: [PATCH] QuRT: patch for eigen

This patch is required for QuRT. comlpex.h defines "I" and it replaces "I" in the
enum definition without this patch creating an error.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>
---
 makefiles/qurt/qurt_eigen.patch | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 makefiles/qurt/qurt_eigen.patch

diff --git a/makefiles/qurt/qurt_eigen.patch b/makefiles/qurt/qurt_eigen.patch
new file mode 100644
index 0000000000..d5cec3141a
--- /dev/null
+++ b/makefiles/qurt/qurt_eigen.patch
@@ -0,0 +1,17 @@
+This patch is required for QuRT. compex.h defines "I" and it replaces "I" in the 
+enum definition without this patch creating an error.
+
+diff --git a/Eigen/src/Core/SolveTriangular.h b/Eigen/src/Core/SolveTriangular.h
+index ef17f28..1116270 100644
+--- a/Eigen/src/Core/SolveTriangular.h
++++ b/Eigen/src/Core/SolveTriangular.h
+@@ -112,6 +112,9 @@ template<typename Lhs, typename Rhs, int Mode, int Index, int Size,
+          bool Stop = Index==Size>
+ struct triangular_solver_unroller;
+ 
++#ifdef __PX4_QURT
++#undef I
++#endif
+ template<typename Lhs, typename Rhs, int Mode, int Index, int Size>
+ struct triangular_solver_unroller<Lhs,Rhs,Mode,Index,Size,false> {
+   enum {