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[Bug fortran/47495] .mod files: File modification time - Makefile build issue
- From: "rwild at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 29 Jan 2011 13:28:12 +0000
- Subject: [Bug fortran/47495] .mod files: File modification time - Makefile build issue
- Auto-submitted: auto-generated
- References: <bug-47495-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47495
--- Comment #11 from Ralf Wildenhues <rwild at gcc dot gnu.org> 2011-01-29 13:28:11 UTC ---
(In reply to comment #10)
> > If you want one rule to update multiple outputs, see
> > <http://www.gnu.org/software/automake/manual/html_node/Multiple-Outputs.html>
>
> That sounds as if a huge number of lines is needed *per file* if one wants to
> be compatible with POSIX make and avoid compilation cascades. :-(
Which is one of the reasons I would like to see such rules be generated (e.g.,
by automake or your generator of choice). In order to write a correct rule
generator the exact semantics must be known (and of course, we would like to
abstract away as much as possible the different semantics from different
Fortran compilers).