switch workflow

MAKE.bat

@@ -265,7 +265,7 @@ if "%1"=="push" (
 )
 
 if "%1"=="prep" (
-    call make.bat split
+    call make.bat join
     call make.bat amalgamation
     exit /b
 )
@@ -616,6 +616,11 @@ rem rd /q /s _project               > nul 2> nul
     exit /b
 )
 
+@REM join split files together before we compile
+setlocal
+call make.bat prep
+endlocal
+
 set cc=%cc%
 set dll=dll
 set build=dev