#include "HsVersions.h"
import DriverPipeline ( CompResult(..), preprocess, compile, link )
-import DriverState ( v_Output_file )
+import DriverState ( v_Output_file, v_NoHsMain )
import DriverPhases
import DriverUtil
import Finder
-- clean up after ourselves
cleanTempFilesExcept verb (ppFilesFromSummaries modsDone)
- -- issue a warning for the confusing case where the user said '-o foo'
- -- but we're not going to do any linking.
ofile <- readIORef v_Output_file
- when (ghci_mode == Batch && isJust ofile && not a_root_is_Main
+ no_hs_main <- readIORef v_NoHsMain
+
+ -- Issue a warning for the confusing case where the user
+ -- said '-o foo' but we're not going to do any linking.
+ -- We attempt linking if either (a) one of the modules is
+ -- called Main, or (b) the user said -no-hs-main, indicating
+ -- that main() is going to come from somewhere else.
+ --
+ let do_linking = a_root_is_Main || no_hs_main
+ when (ghci_mode == Batch && isJust ofile && not do_linking
&& verb > 0) $
hPutStrLn stderr "Warning: output was redirected with -o, but no output will be generated\nbecause there is no Main module."
-- link everything together
- linkresult <- link ghci_mode dflags a_root_is_Main hpt3
+ linkresult <- link ghci_mode dflags do_linking hpt3
cmLoadFinish Succeeded linkresult
hpt3 modsDone ghci_mode pcs3