From 6dbbfca0309c960ef3a52f065199d3fa4f99760b Mon Sep 17 00:00:00 2001
From: obligaron <obligaron@live.com>
Date: Mon, 12 Jul 2021 19:40:42 +0200
Subject: [PATCH] Don't use -fpermissive on msvc

---
 3rdParty/libzt/CMakeLists.txt | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/3rdParty/libzt/CMakeLists.txt b/3rdParty/libzt/CMakeLists.txt
index d9081a4ae..3a6414ca5 100644
--- a/3rdParty/libzt/CMakeLists.txt
+++ b/3rdParty/libzt/CMakeLists.txt
@@ -7,12 +7,18 @@ FetchContent_Declare(libzt
 FetchContent_MakeAvailableExcludeFromAll(libzt)
 
 # External library, ignore all warnings
-target_compile_options(zto_obj PRIVATE -fpermissive -w)
+target_compile_options(zto_obj PRIVATE -w)
 target_compile_options(libnatpmp_obj PRIVATE -w)
-target_compile_options(libzt_obj PRIVATE -fpermissive -w)
+target_compile_options(libzt_obj PRIVATE -w)
 target_compile_options(lwip_obj PRIVATE -w)
 target_compile_options(miniupnpc_obj PRIVATE -w)
-target_compile_options(zt-static PRIVATE -fpermissive -w)
+target_compile_options(zt-static PRIVATE -w)
+
+if(NOT CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+  target_compile_options(zto_obj PRIVATE -fpermissive)
+  target_compile_options(libzt_obj PRIVATE -fpermissive)
+  target_compile_options(zt-static PRIVATE -fpermissive)
+endif()
 
 target_include_directories(zt-static INTERFACE
   "${libzt_SOURCE_DIR}/include"