Mark CROSS_ORIGIN as requiring pthreads and dynamic execution (#25582)

sbc100 · web-flow · commit d6d3b16e8e3d · 2025-10-18T11:12:48.000-07:00
This setting was recently added in #25581 and it only currently has en effect on pthread-based programs. It is also not compatible with `-sNO_DYNAMIC_EXECUTION` because it depends on starting worker based on JS string. These errors look like this: ``` $ emcc -sCROSS_ORIGIN -pthread -sDYNAMIC_EXECUTION=0 hello.c emcc: error: CROSS_ORIGIN is not compatible with DYNAMIC_EXECUTION=0 ```
diff --git a/tools/link.py b/tools/link.py
@@ -677,6 +677,8 @@ def report_incompatible_settings():
     ('MODULARIZE', 'NODEJS_CATCH_REJECTION', None),
     ('MODULARIZE', 'NODEJS_CATCH_EXIT', None),
     ('LEGACY_VM_SUPPORT', 'MEMORY64', None),
+    ('CROSS_ORIGIN', 'NO_DYNAMIC_EXECUTION', None),
+    ('CROSS_ORIGIN', 'NO_PTHREADS', None),
   ]
 
   for a, b, reason in incompatible_settings:

Original file line number	Diff line number	Diff line change
`@@ -677,6 +677,8 @@ def report_incompatible_settings():`
`677`	`677`	`('MODULARIZE', 'NODEJS_CATCH_REJECTION', None),`
`678`	`678`	`('MODULARIZE', 'NODEJS_CATCH_EXIT', None),`
`679`	`679`	`('LEGACY_VM_SUPPORT', 'MEMORY64', None),`
	`680`	`+ ('CROSS_ORIGIN', 'NO_DYNAMIC_EXECUTION', None),`
	`681`	`+ ('CROSS_ORIGIN', 'NO_PTHREADS', None),`
`680`	`682`	`]`
`681`	`683`
`682`	`684`	`for a, b, reason in incompatible_settings:`