On Tue, 23 Oct 2012, Daniel Richard G. wrote:
> config.h.generic: configure.ac
> rm -rf $@ _generic
> mkdir _generic
> cd _generic && $(abs_top_srcdir)/configure
> perl -pe '<insert Perl one-liner here>' _generic/config.h >$@
> rm -rf _generic
>
> So regardless of how the build tree is currently configured, this re-runs the
> configure script with default settings, but in a temporary subdirectory so
> that the existing configuration remains untouched.
We have a problem. When I run this, I get this error:
configure: error: source directory already configured; run "make
distclean" there first
I tried changing
cd _generic && $(abs_top_srcdir)/configure
to
(cd _generic; $(abs_top_srcdir)/configure)
because surely you want to return to srcdir after the configure, but
that did not help.
I managed to get this to work by a nasty hack: hide config.status when
running configure, then restore it afterwards. I don't like this. It
relies too much on the internal behaviour of ./configure. I am going to
try something different:
Copy into _generic the necessary files for running configure, then run
it locally there.
Philip
--
Philip Hazel
