Re: Rule formulation
haues 1 <[email protected]>
| Newsgroups | gmane.comp.gnu.make.windows |
|---|---|
| Message-ID | <[email protected]> |
I am glad it is that easy. Thanks a lot! -haues- Rob Walker-6 wrote: > > Just add an empty rule for fileB, like so: > > fileB: > > -Rob > > haues1 wrote: >> Hi, >> >> I am trying to formulate a rule for the following task: >> >> The target "fileA" is created by executing the command >> "Cmd_to_create_fileA", which does NOT require the "fileB". There is no >> rule >> in GnuMake to create "fileB". Still, I would like to make the creation of >> "fileA" dependent on "fileB", according to the conditons: >> >> Execute "Cmd_to_create_fileA" >> 1) if fileA exists and fileB exists and fileB is younger than fileA; >> 2) if fileA exists and fileB does not exist; >> 3) if fileA does not exist and fileB exists; >> 4) if fileA does not exist and fileB does not exist; >> or, formulated the other way round, do NOT execute "Cmd_to_create_fileA": >> if fileA exists and fileB exists and fileB is older than fileA; >> >> The conditions 1) and 3) are covered by the standard rule: >> >> fileA: fileB >> Cmd_to_create_fileA >> >> In cases 2) and 4) gnumake doesn't find a rule to create fileB, and >> aborts >> with an error like "Don't now how to make fileB". How can I formulate the >> rule, so no error occurs? >> >> Can somebody please help me? >> >> Cheers >> Haues >> > > > > _______________________________________________ > Make-w32 mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/make-w32 > > -- View this message in context: http://www.nabble.com/Rule-formulation-tp14721900p14766474.html Sent from the Gnu - Make - W32 mailing list archive at Nabble.com.