Build FreeBSD as a Linux variant in GN (series 0003): ship
dart2bytecode in the SDK as on Linux and macOS.
FreeBSD-specific, not submitted upstream yet.
--- sdk/BUILD.gn.orig	2026-09-29 08:00:52 UTC
+++ sdk/BUILD.gn
@@ -177,7 +177,8 @@ if ((dart_target_arch == "x64" || dart_target_arch == 
 # dart2bytecode is an AOT snapshot, which is not supported on the ia32
 # architecture. It is only included as needed on a subset of OS targets.
 if ((dart_target_arch == "x64" || dart_target_arch == "arm64") &&
-    (dart_dynamic_modules || target_os == "linux" || target_os == "mac")) {
+    (dart_dynamic_modules || target_os == "linux" || target_os == "freebsd" ||
+     target_os == "mac")) {
   _sdk_snapshots += [ [
         "dart2bytecode",
         "../utils/dart2bytecode:dart2bytecode",