From 9638c2df2ca9b0a5c018c41b0863cc743a2e691b Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Sat, 29 Jun 2019 20:02:13 +0200
Subject: [PATCH] Add underscore only for mingw32

checking WIN32 is not sufficient
---
 cmake/prebuild.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/prebuild.cmake b/cmake/prebuild.cmake
index b0348f3a3..e508a46c2 100644
--- a/cmake/prebuild.cmake
+++ b/cmake/prebuild.cmake
@@ -59,7 +59,7 @@ set(FU "")
 if (APPLE OR (MSVC AND NOT ${CMAKE_C_COMPILER_ID} MATCHES "Clang"))
   set(FU "_")
 endif()
-if(MINGW)
+if(MINGW AND NOT MINGW64)
   set(FU "_")
 endif()