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Re: source files in subdirs and VPATH build
From: |
Ralf Wildenhues |
Subject: |
Re: source files in subdirs and VPATH build |
Date: |
Thu, 11 Jan 2007 00:21:49 +0100 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Hello Guillaume,
* Guillaume Rousse wrote on Wed, Jan 10, 2007 at 11:56:09AM CET:
>
> foo1.ml
> foo2.ml
> subdir/foo3.ml
> subdir/foo4.ml
> etc...
>
> My current option is to build object files in the same directory as the
> corresponding ource file (actually, it is ocaml compiler defaut
> behaviour). It makes computing object files list quite easy:
> MYSOURCEFILES = foo1.ml foo2.ml subdir/foo3.ml subdir/foo4.ml
> MYOBJECTFILES = $(MYSOURCEFILES:.ml=.cmo)
This is what Automake usually does in the subdir-objects mode.
Without the subdir-objects option, it flattens all file names
(and renames based on conflicts). Of course, I'm speaking about
the case where Automake does the computation of the object file
names.
> Is there a a way to pre-create all those subdirectories in my build tree
> if they don't pre-exist ?
Yes. The object handling code in automake.in should take care of all of
that, by depending on the respective .dirstamp files in those
directories.
> Other alternative is to switch compilation model to always output object
> files in local directory, rather as in original source subdirectory.
> Howeverm then I'll have to find a make-portable way to compute a list of
> files from another one by applying a function to each member, as in GNU make
This machinery is all present in automake.in (but not accessible from
outside). Sorry, I haven't worked on this more yet.
Cheers,
Ralf