diff --git a/docs/CODEMAP.md b/docs/CODEMAP.md
index 7923470..3119ac2 100644
--- a/docs/CODEMAP.md
+++ b/docs/CODEMAP.md
@@ -49,7 +49,8 @@ cargo +stable install cargo-expand --version 1.0.95 --locked
 cargo +stable install flutter_rust_bridge_codegen --version 1.80.1 --features uuid --locked
 pushd flutter && flutter pub get && popd
 RUSTC_BOOTSTRAP=1 flutter_rust_bridge_codegen --rust-input ./src/flutter_ffi.rs \
-  --dart-output ./flutter/lib/generated_bridge.dart --c-output ./flutter/macos/Runner/bridge_generated.h
+  --dart-output ./flutter/lib/generated_bridge.dart --c-output ./flutter/macos/Runner/bridge_generated.h \
+  --llvm-path S:/dev/LLVM   # ffigen ищет libclang.dll в дефолтных путях, LLVM у нас на S:
 ```
 Пины FRB_VERSION/CARGO_EXPAND_VERSION — в `upstream.txt`. Шаг встроен в `build-windows.ps1` перед build.py.
 RUSTC_BOOTSTRAP=1 нужен, т.к. cargo-expand требует nightly-фич, а тулчейн 1.75 stable.
diff --git a/scripts/build-windows.ps1 b/scripts/build-windows.ps1
index 36d84be..e23160f 100644
--- a/scripts/build-windows.ps1
+++ b/scripts/build-windows.ps1
@@ -110,7 +110,9 @@ if (-not (Test-Path $frb)) {
   cargo +stable install flutter_rust_bridge_codegen --version $pins['FRB_VERSION'] --features uuid --locked
 }
 Push-Location flutter; flutter pub get; Pop-Location
-& $frb --rust-input ./src/flutter_ffi.rs --dart-output ./flutter/lib/generated_bridge.dart --c-output ./flutter/macos/Runner/bridge_generated.h
+# ffigen (внутри codegen) ищет libclang.dll в дефолтных путях -> явно указываем корень LLVM (S:\dev\LLVM).
+$llvmRoot = (Split-Path $env:LIBCLANG_PATH) -replace '\\','/'
+& $frb --rust-input ./src/flutter_ffi.rs --dart-output ./flutter/lib/generated_bridge.dart --c-output ./flutter/macos/Runner/bridge_generated.h --llvm-path $llvmRoot
 $frbRc = $LASTEXITCODE
 # Проверяем ОБЕ стороны: rust + dart (+ freezed). rust-файл создаётся до dart, поэтому одного его мало.
 $genOk = ($frbRc -eq 0) -and (Test-Path 'src/bridge_generated.rs') -and (Test-Path 'flutter/lib/generated_bridge.dart') -and (Test-Path 'flutter/lib/generated_bridge.freezed.dart')