Redundant re-link when ".exe" omitted
|Reported by:||simonpj||Owned by:|
|Type of failure:||None/Unknown||Test Case:|
|Related Tickets:||Differential Rev(s):|
(Reported by Neil Mitchell.)
GHC 6.4.2 doesn't normally relink when invoked with --make if the target file has not changed. This is very very useful!
Create a Main.hs, and compile with
ghc --make twice, first time it
compiles, second time it does nothing.
ghc --make -o file.exe twice, first time it compiles,
second time it does nothing.
ghc --make -o file (note the absence of .exe). First time
it compiles as file.exe, second time and every time after it relinks.
This is the bug. On Windows
-o file means
-o file.exe, and I guess the
file "file" rather than "file.exe" is checked if it is up to date or