From 9ae0e0f195e0a3b83e86d11b2ff6f4f8be254803 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Antonio=20S=C3=A1nchez?= <cantonios@google.com>
Date: Fri, 13 Mar 2026 21:03:24 +0000
Subject: [PATCH] Remove include from within Eigen namespace.

libeigen/eigen!2294
---
 Eigen/Core                   | 5 +++++
 Eigen/src/Core/util/Memory.h | 4 ----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/Eigen/Core b/Eigen/Core
index 616b184b1..ccf7a0c1a 100644
--- a/Eigen/Core
+++ b/Eigen/Core
@@ -129,6 +129,11 @@
 #include <intrin.h>
 #endif
 
+// Required for querying cache sizes on macOS.
+#if EIGEN_OS_MAC
+#include <sys/sysctl.h>
+#endif
+
 #if defined(EIGEN_USE_SYCL)
 #undef min
 #undef max
diff --git a/Eigen/src/Core/util/Memory.h b/Eigen/src/Core/util/Memory.h
index 3d279014a..efe0eb764 100644
--- a/Eigen/src/Core/util/Memory.h
+++ b/Eigen/src/Core/util/Memory.h
@@ -977,10 +977,6 @@ class aligned_allocator {
 
 //---------- Cache sizes ----------
 
-#if EIGEN_OS_MAC
-#include <sys/sysctl.h>
-#endif
-
 #if !defined(EIGEN_NO_CPUID)
 #if EIGEN_COMP_GNUC && EIGEN_ARCH_i386_OR_x86_64
 #if defined(__PIC__) && EIGEN_ARCH_i386