Re: Long-term mass bug filing for crossbuild support

[Mike Hommey <mh@glandium.org>]

On Tue, Nov 06, 2007 at 02:52:37PM -0500, Steve Langasek wrote:
> On Tue, Nov 06, 2007 at 07:23:39PM +0000, Neil Williams wrote:
> > On Tue, 6 Nov 2007 19:35:41 +0100
> > Mike Hommey <mh@glandium.org> wrote:
> 
> > > On Tue, Nov 06, 2007 at 01:04:48PM +0000, Neil Williams wrote:
> 
> > > > The most common change is simply to retrieve the cross-building
> > > > metadata from dpkg-architecture in debian/rules:
> > > > http://wiki.debian.org/EmdebianGuide
> 
> > > > DEB_HOST_GNU_TYPE=$(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
> > > > DEB_BUILD_GNU_TYPE=$(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
> 
> > > > Depending on whether the package uses ./configure:
> > > > ifneq ($(DEB_HOST_GNU_TYPE),$(DEB_BUILD_GNU_TYPE))
> > > > CROSS= --build $(DEB_BUILD_GNU_TYPE) --host $(DEB_HOST_GNU_TYPE)
> > > > else
> > > > CROSS=
> > > > endif
> 
> > > Shouldn't packages be using these --build and --host arguments already
> > > even if not cross-building ?
> 
> > No. There is no need to specify --build and --host if not cross-compiling.
> 
> Er, no.  There *is* a need to specify --build when not cross-compiling, if
> your upstream build rules do clever things when the architecture is
> detected as "i686" instead of "i386".  This was the point in my previous
> comment.
> 
> There is no need to specify --host when not cross-compiling, and specifying
> it will result in autoconf believing that the compiler should be invoked as
> a cross-compiler.  Sometimes this has strange side effects as well.

Hadn't this been fixed quite some time ago ? Or wasn't it something with
--target ? Because I've been using --build and --host for a long time
with no problem.

Mike