-- misc opts
| Opt_Pp
| Opt_ForceRecomp
- | Opt_DryRun
| Opt_ExcessPrecision
| Opt_EagerBlackHoling
| Opt_ReadUserPackageConf
--------------- The main flags themselves ------------------
dynamic_flags :: [Flag (CmdLineP DynFlags)]
dynamic_flags = [
- Flag "n" (NoArg (setDynFlag Opt_DryRun))
+ Flag "n" (NoArg (addWarn "The -n flag is deprecated and no longer has any effect"))
, Flag "cpp" (NoArg (setExtensionFlag Opt_Cpp))
, Flag "F" (NoArg (setDynFlag Opt_Pp))
, Flag "#include"
| EOF
traceCmd :: DynFlags -> String -> String -> IO () -> IO ()
--- a) trace the command (at two levels of verbosity)
--- b) don't do it at all if dry-run is set
+-- trace the command (at two levels of verbosity)
traceCmd dflags phase_name cmd_line action
= do { let verb = verbosity dflags
; showPass dflags phase_name
; debugTraceMsg dflags 3 (text cmd_line)
; hFlush stderr
- -- Test for -n flag
- ; unless (dopt Opt_DryRun dflags) $ do {
-
-- And run it!
; action `catchIO` handle_exn verb
- }}
+ }
where
handle_exn _verb exn = do { debugTraceMsg dflags 2 (char '\n')
; debugTraceMsg dflags 2 (ptext (sLit "Failed:") <+> text cmd_line <+> text (show exn))
<entry>mode</entry>
<entry>-</entry>
</row>
- <row>
- <entry><option>-n</option></entry>
- <entry>do a dry run</entry>
- <entry>dynamic</entry>
- <entry>-</entry>
- </row>
- <row>
+ <row>
<entry><option>-v</option></entry>
<entry>verbose mode (equivalent to <option>-v3</option>)</entry>
<entry>dynamic</entry>
<variablelist>
<varlistentry>
<term>
- <option>-n</option>
- <indexterm><primary><option>-n</option></primary></indexterm>
- </term>
- <listitem>
- <para>Does a dry-run, i.e. GHC goes through all the motions
- of compiling as normal, but does not actually run any
- external commands.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term>
<option>-v</option>
<indexterm><primary><option>-v</option></primary></indexterm>
</term>