From 041954e79b4267266e3d41414e878498ab780ab8 Mon Sep 17 00:00:00 2001
From: starball <119012845+starball5@users.noreply.github.com>
Date: Fri, 2 Aug 2024 09:52:34 -0700
Subject: [PATCH] Only set CMAKE_EXECUTABLE_SUFFIX in toolchain if not defined
 already

Fixes #18860
---
 cmake/Modules/Platform/Emscripten.cmake | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cmake/Modules/Platform/Emscripten.cmake b/cmake/Modules/Platform/Emscripten.cmake
index fbbaf2bf6fd06..16cb615e70c24 100644
--- a/cmake/Modules/Platform/Emscripten.cmake
+++ b/cmake/Modules/Platform/Emscripten.cmake
@@ -270,7 +270,9 @@ if (EMSCRIPTEN_GENERATE_BITCODE_STATIC_LIBRARIES)
   message(FATAL_ERROR "EMSCRIPTEN_GENERATE_BITCODE_STATIC_LIBRARIES is not compatible with the llvm backend")
 endif()
 
-set(CMAKE_EXECUTABLE_SUFFIX ".js")
+if(NOT DEFINED CMAKE_EXECUTABLE_SUFFIX)
+  set(CMAKE_EXECUTABLE_SUFFIX ".js")
+endif()
 
 set(CMAKE_C_USE_RESPONSE_FILE_FOR_LIBRARIES 1)
 set(CMAKE_CXX_USE_RESPONSE_FILE_FOR_LIBRARIES 1)