fix build

build.bat

@@ -69,6 +69,7 @@ set compiler_includes= ^
 	/Isrc\
 set libs= ^
 	kernel32.lib ^
+	Synchronization.lib ^
 	bin\llvm\windows\LLVM-C.lib
 
 set linker_flags= -incremental:no -opt:ref -subsystem:console
@@ -95,4 +96,4 @@ if %release_mode% EQU 0 odin run examples/demo
 
 del *.obj > NUL 2> NUL
 
-:end_of_build
+:end_of_build