--- thunderbird-125.0/js/src/js-config.mozbuild.~1~	2024-04-25 13:35:52.482682180 -0400
+++ thunderbird-125.0/js/src/js-config.mozbuild	2024-04-25 13:41:18.400310514 -0400
@@ -24,3 +24,5 @@
     DEFINES["JS_HAS_CTYPES"] = True
     if not CONFIG["MOZ_SYSTEM_FFI"]:
         DEFINES["FFI_BUILDING"] = True
+
+DEFINES['SOLARIS'] = True