From c0ae8892cc3473c92b2ac1be3193b4cf90640e34 Mon Sep 17 00:00:00 2001
From: Chris Cranford <chris@hibernate.org>
Date: Fri, 23 Aug 2024 20:48:06 -0400
Subject: [PATCH] GH-609 Create Emscripten `.so` file

---
 CMakeLists.txt    | 21 +++++++++++++++------
 CMakePresets.json |  2 +-
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c49da96b..c9e41e4d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -148,17 +148,26 @@ endif()
 TARGET_INCLUDE_DIRECTORIES(${PROJECT_NAME} PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/src")
 
 IF (NOT APPLE)
-    # Linker options for the GDExtension library
-    TARGET_LINK_OPTIONS(${PROJECT_NAME} PRIVATE
-            $<$<NOT:${compiler_is_msvc}>:
+    # Check if we are using Emscripten
+    IF (CMAKE_CXX_COMPILER MATCHES "em\\+\\+|emcc")
+        # Emscripten-specific linker options (empty or specific to Emscripten)
+        # Do not add -R or $$ORIGIN here since Emscripten does not support them
+        TARGET_LINK_OPTIONS(${PROJECT_NAME} PRIVATE
+                # Emscripten does not need these options
+        )
+    ELSE()
+        # Linker options for non-Emscripten platforms
+        TARGET_LINK_OPTIONS(${PROJECT_NAME} PRIVATE
+                $<$<NOT:${compiler_is_msvc}>:
                 -static-libgcc
                 -static-libstdc++
                 -Wl,-R,'$$ORIGIN'
                 $<$<CONFIG:Release>:
-                    $<$<PLATFORM_ID:Android>:-s>
+                $<$<PLATFORM_ID:Android>:-s>
                 >
-            >
-    )
+                >
+        )
+    ENDIF()
 ENDIF ()
 
 if (AUTOFORMAT_SRC_ON_CONFIGURE MATCHES ON)
diff --git a/CMakePresets.json b/CMakePresets.json
index 8d55f8ef..e03d1338 100644
--- a/CMakePresets.json
+++ b/CMakePresets.json
@@ -92,7 +92,7 @@
         "CMAKE_CXX_COMPILER": "em++",
         "CMAKE_TOOLCHAIN_FILE": "$env{EMSDK}/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake",
         "BUILD_SHARED_LIBS": "ON",
-        "CMAKE_CXX_FLAGS": "-s SIDE_MODULE=1 -shared"
+        "CMAKE_CXX_FLAGS": "-s SIDE_MODULE=1"
       }
     }
   ]