diff --git a/.github/workflows/builds.yml b/.github/workflows/builds.yml
new file mode 100644
index 00000000..18f7172c
--- /dev/null
+++ b/.github/workflows/builds.yml
@@ -0,0 +1,20 @@
+name: builds
+
+on: [push, pull_request]
+
+jobs:
+  build-windows-2022:
+    runs-on: windows-2022
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+      - name: build (vs 2022)
+        shell: cmd
+        run: |
+          call "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
+          call build raddbg msvc debug
+          call build raddbg_from_pdb msvc debug
+          call build raddbg_from_dwarf msvc debug
+          call build raddbg clang debug
+          call build raddbg_from_pdb clang debug
+          call build raddbg_from_dwarf clang debug
diff --git a/build.bat b/build.bat
index 8521437b..6809c165 100644
--- a/build.bat
+++ b/build.bat
@@ -81,23 +81,23 @@ if not exist local mkdir local
 if "%no_meta%"=="1" echo [skipping metagen]
 if not "%no_meta%"=="1" (
   pushd build
-  %compile_debug% ..\src\metagen\metagen_main.c %compile_link% %out%metagen.exe
-  metagen.exe
+  %compile_debug% ..\src\metagen\metagen_main.c %compile_link% %out%metagen.exe || exit /b 1
+  metagen.exe || exit /b 1
   popd
 )
 
 :: --- Build Everything (@build_targets) --------------------------------------
 pushd build
-if "%raddbg%"=="1"             %compile% %gfx%       ..\src\raddbg\raddbg_main.cpp                                %compile_link% %out%raddbg.exe
-if "%raddbg_from_pdb%"=="1"    %compile%             ..\src\raddbg_convert\pdb\raddbg_from_pdb_main.c             %compile_link% %out%raddbg_from_pdb.exe
-if "%raddbg_from_dwarf%"=="1"  %compile%             ..\src\raddbg_convert\dwarf\raddbg_from_dwarf.c              %compile_link% %out%raddbg_from_dwarf.exe
-if "%raddbg_dump%"=="1"        %compile%             ..\src\raddbg_dump\raddbg_dump.c                             %compile_link% %out%raddbg_dump.exe
-if "%ryan_scratch%"=="1"       %compile%             ..\src\scratch\ryan_scratch.c                                %compile_link% %out%ryan_scratch.exe
-if "%cpp_tests%"=="1"          %compile%             ..\src\scratch\i_hate_c_plus_plus.cpp                        %compile_link% %out%cpp_tests.exe
-if "%look_at_raddbg%"=="1"     %compile%             ..\src\scratch\look_at_raddbg.c                              %compile_link% %out%look_at_raddbg.exe
-if "%mule_main%"=="1"          del vc*.pdb mule*.pdb && %compile_release% %only_compile% ..\src\mule\mule_inline.cpp && %compile_release% %only_compile% ..\src\mule\mule_o2.cpp && %compile_debug% %EHsc% ..\src\mule\mule_main.cpp ..\src\mule\mule_c.c mule_inline.obj mule_o2.obj
-if "%mule_module%"=="1"        %compile%             ..\src\mule\mule_module.cpp                                  %compile_link% %link_dll% %out%mule_module.dll
-if "%mule_hotload%"=="1"       %compile% ..\src\mule\mule_hotload_main.c %compile_link% %out%mule_hotload.exe & %compile% ..\src\mule\mule_hotload_module_main.c %compile_link% %link_dll% %out%mule_hotload_module.dll
+if "%raddbg%"=="1"             %compile% %gfx%       ..\src\raddbg\raddbg_main.cpp                                %compile_link% %out%raddbg.exe || exit /b 1
+if "%raddbg_from_pdb%"=="1"    %compile%             ..\src\raddbg_convert\pdb\raddbg_from_pdb_main.c             %compile_link% %out%raddbg_from_pdb.exe || exit /b 1
+if "%raddbg_from_dwarf%"=="1"  %compile%             ..\src\raddbg_convert\dwarf\raddbg_from_dwarf.c              %compile_link% %out%raddbg_from_dwarf.exe || exit /b 1
+if "%raddbg_dump%"=="1"        %compile%             ..\src\raddbg_dump\raddbg_dump.c                             %compile_link% %out%raddbg_dump.exe || exit /b 1
+if "%ryan_scratch%"=="1"       %compile%             ..\src\scratch\ryan_scratch.c                                %compile_link% %out%ryan_scratch.exe || exit /b 1
+if "%cpp_tests%"=="1"          %compile%             ..\src\scratch\i_hate_c_plus_plus.cpp                        %compile_link% %out%cpp_tests.exe || exit /b 1
+if "%look_at_raddbg%"=="1"     %compile%             ..\src\scratch\look_at_raddbg.c                              %compile_link% %out%look_at_raddbg.exe || exit /b 1
+if "%mule_main%"=="1"          del vc*.pdb mule*.pdb && %compile_release% %only_compile% ..\src\mule\mule_inline.cpp && %compile_release% %only_compile% ..\src\mule\mule_o2.cpp && %compile_debug% %EHsc% ..\src\mule\mule_main.cpp ..\src\mule\mule_c.c mule_inline.obj mule_o2.obj || exit /b 1
+if "%mule_module%"=="1"        %compile%             ..\src\mule\mule_module.cpp                                  %compile_link% %link_dll% %out%mule_module.dll || exit /b 1
+if "%mule_hotload%"=="1"       %compile% ..\src\mule\mule_hotload_main.c %compile_link% %out%mule_hotload.exe & %compile% ..\src\mule\mule_hotload_module_main.c %compile_link% %link_dll% %out%mule_hotload_module.dll || exit /b 1
 popd
 
 :: --- Unset ------------------------------------------------------------------