[esm-integration] Dynamic linking is not implemented for ESM integration

See emscripten-core#24060

Author: sbc100

test/common.py

@@ -949,15 +949,17 @@ def is_2gb(self):
     return self.get_setting('INITIAL_MEMORY') == '2200mb'
 
   def check_dylink(self):
+    if self.get_setting('WASM_ESM_INTEGRATION'):
+      self.skipTest('dynamic linking not supported with WASM_ESM_INTEGRATION')
     if self.is_wasm2js():
-      self.skipTest('no dynamic linking support in wasm2js yet')
+      self.skipTest('dynamic linking not supported with wasm2js')
     if '-fsanitize=undefined' in self.emcc_args:
-      self.skipTest('no dynamic linking support in UBSan yet')
+      self.skipTest('dynamic linking not supported with UBSan')
     # MEMORY64=2 mode doesn't currently support dynamic linking because
     # The side modules are lowered to wasm32 when they are built, making
     # them unlinkable with wasm64 binaries.
     if self.get_setting('MEMORY64') == 2:
-      self.skipTest('MEMORY64=2 + dynamic linking is not currently supported')
+      self.skipTest('dynamic linking not supported with MEMORY64=2')
 
   def require_v8(self):
     if not config.V8_ENGINE or config.V8_ENGINE not in config.JS_ENGINES:

test/test_core.py

@@ -9511,6 +9511,7 @@ def test_externref_emjs(self, dynlink):
     self.emcc_args += ['-mreference-types']
     self.node_args += shared.node_reference_types_flags(self.get_nodejs())
     if dynlink:
+      self.check_dylink()
       self.set_setting('MAIN_MODULE', 2)
     self.do_core_test('test_externref_emjs.c')
 

tools/link.py

@@ -790,6 +790,8 @@ def phase_linker_setup(options, linker_args):  # noqa: C901, PLR0912, PLR0915
     default_setting('MODULARIZE', 'instance')
     if not settings.EXPORT_ES6 or settings.MODULARIZE != 'instance':
       exit_with_error('WASM_ESM_INTEGRATION requires EXPORT_ES6 and MODULARIZE=instance')
+    if settings.RELOCATABLE:
+      exit_with_error('WASM_ESM_INTEGRATION is not compatible with dynamic linking')
 
   if settings.MODULARIZE and settings.MODULARIZE not in [1, 'instance']:
     exit_with_error(f'Invalid setting "{settings.MODULARIZE}" for MODULARIZE.')