Re: bug in swig make process?

On Tue, Nov 15, 2005 at 04:35:10PM +0100, Mathias Weinert wrote:
> But (at least on my machine) Makefile sets these two
> variables to the same directory.
>
> If I look at configure.in I see:
> abs_srcdir="`cd $srcdir && pwd`"
> abs_builddir="`pwd`"
> which lets me suppose that these two variables will
> always be set to the same values.
>

If you use what's variously known as an objdir or VPATH build, you'll
notice that these two paths are different. To do that, create a fresh
directory and run configure from there:

(assuming you've unpacked the tarball into a directory called ~/svn-srcdir)
$ mkdir ~/svn-objdir
$ cd ~/svn-objdir
$ ../svn-srcdir/configure [flags]

Now you'll have a Makefile in ~/svn-objdir that has abs_srcdir set to
~/svn-srcdir, and abs_builddir set to ~/svn-objdir. Running 'make'
will write only to the build directory, not the srcdir.

> The reason for this is that the files (and other swig
> files) are only deleted if the following condition is
> true:
> 'if test $(abs_srcdir) != $(abs_builddir);'.
>

So it only deletes the files in objdir builds. That's odd; I wonder why.

Are the files generated in the srcdir, I wonder? Some of our files are
(by configure), and make extraclean removes them.

Regards,
Malcolm

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Received on Tue Nov 15 17:37:16 2005