From 8485cb3d61755384d9e459e06d3fa1535f953682 Mon Sep 17 00:00:00 2001
From: Ray Speth <speth@mit.edu>
Date: Tue, 31 Jan 2023 13:16:16 -0500
Subject: [PATCH] WIP: second try at MinGW symbol export

---
 ext/eigen                                           |  2 +-
 include/cantera/extensions/PythonExtensionManager.h |  8 --------
 src/extensions/PythonExtensionManager.cpp           | 10 ++++++++++
 3 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/ext/eigen b/ext/eigen
index 21ae2afd4ed..3147391d946 160000
--- a/ext/eigen
+++ b/ext/eigen
@@ -1 +1 @@
-Subproject commit 21ae2afd4edaa1b69782c67a54182d34efe43f9c
+Subproject commit 3147391d946bb4b6c68edd901f2add6ac1f31f8c
diff --git a/include/cantera/extensions/PythonExtensionManager.h b/include/cantera/extensions/PythonExtensionManager.h
index ee6039ca1e0..be67dc7b151 100644
--- a/include/cantera/extensions/PythonExtensionManager.h
+++ b/include/cantera/extensions/PythonExtensionManager.h
@@ -8,12 +8,6 @@
 
 #include "cantera/base/ExtensionManager.h"
 
-#define BOOST_DLL_USE_STD_FS
-#ifdef __MINGW32__
-#define BOOST_DLL_FORCE_ALIAS_INSTANTIATION
-#endif
-#include <boost/dll/alias.hpp>
-
 namespace Cantera
 {
 
@@ -49,8 +43,6 @@ class PythonExtensionManager : public ExtensionManager
     static bool s_imported;
 };
 
-BOOST_DLL_ALIAS(Cantera::PythonExtensionManager::registerSelf, registerPythonExtensionManager);
-
 }
 
 #endif
diff --git a/src/extensions/PythonExtensionManager.cpp b/src/extensions/PythonExtensionManager.cpp
index d971023353d..ee6a8b89c1f 100644
--- a/src/extensions/PythonExtensionManager.cpp
+++ b/src/extensions/PythonExtensionManager.cpp
@@ -20,6 +20,16 @@
 #include <windows.h>
 #endif
 
+#define BOOST_DLL_USE_STD_FS
+#ifdef __MINGW32__
+#define BOOST_DLL_FORCE_ALIAS_INSTANTIATION
+#endif
+#include <boost/dll/alias.hpp>
+
+// This creates and exports the name that is imported from Application::loadExtension
+BOOST_DLL_ALIAS(Cantera::PythonExtensionManager::registerSelf,
+                registerPythonExtensionManager);
+
 namespace ba = boost::algorithm;
 using namespace std;