On Fri, 28 Sep 2007 16:54:25 +0200 "Hector Oron" <hector.oron@gmail.com> wrote: > Hello, > > I'm looking at gcc-4.3 (on experimental) and trying to cross built > it, but i get the following error, that maybe somebody could explain > what is it. Don't use the dpkg in experimental with dpkg-cross <<2.0.0. The two are incompatible. Work is ongoing. > And why is dpkg-buildpackage failing? Because the dpkg-dev in experimental has converted dpkg-buildpackage to perl (which will make it easier to work with in cross-building) but the dpkg-cross diversion is shell. When the diversion tries to call the new perl script, it fails because it is expecting to call a shell script. (Hence 'use' is seen as an unknown command because shell does not understand the perl keyword 'use'). There is no point "fixing" the diversion because it has already been removed in dpkg-cross 1.99+2.0.0pre2 (dpkg-cross CVS). > I experienced that same > problem trying to build another package for experimental (it was > *apt-cross* with dpkg-cross 1.99+2.0.0pre1 dependency) which did not > work for me. apt-cross ? Which version? Current trunk in SVN is 0.2.9, there is a 0.2.2 branch too. Current Debian unstable version is 0.2.0 and Emdebian has 0.2.1. Depending on progress in dpkg, apt-cross 0.2.2 may not see the light of day - indeed, I'm rather hoping that it doesn't because it retains the existing bugs which are fixed in the NorthernCross code of 0.2.9. dpkg from experimental will break ALL builds if you still have dpkg-cross installed. Cross-builds won't find the right support and native builds will be confused by the diversion. Installing dpkg-cross 1.99+2.0.0pre2 from CVS will remove the diversion and all will be well for native builds at least. Cross-builds will almost certainly fail. To use apt-cross 0.2.9 and emdebian-tools 0.3.9 from SVN, you'll need dpkg-cross 1.99+2.0.0pre2 from CVS and a patched dpkg-dev from *unstable*: ii apt-cross 0.2.9 ii dpkg-dev 1.14.6.1 ii emdebian-tools 0.3.9 These are the versions I am using on amd64. On powerpc and i386, I'm using apt-cross 0.2.2 (might be uploaded to Emdebian but currently a branch in SVN) emdebian-tools 0.3.1 (ditto - not ready quite yet.) dpkg-cross 1.39 dpkg-dev 1.14.6 Current repository versions for unstable are: apt-cross 0.2.1 emdebian-tools 0.3.0 dpkg-cross 1.39 dpkg-dev 1.14.6 I recommend the current repository versions for unstable. The code to cross-build with dpkg-dev 1.14.7 from experimental has not been written yet - it will be internal to dpkg-dev (as far as dpkg-buildpackage is concerned). So a summary: 1. There is no cross-building support available for the experimental dpkg-dev 1.14.7 yet. When it is done, it will be internal to dpkg. 2. The current repository versions of apt-cross, dpkg-cross, dpkg-dev and emdebian-tools for unstable *work*. My advice is to stick with those and don't use the experimental dpkg. 3. There are pending releases of apt-cross and emdebian-tools to fix interim bugs but these may not be needed, it depends on work within dpkg. 4. When dpkg supports dpkg-cross 1.99+2.0.0pre2, dpkg-cross pre2 and apt-cross 0.2.9 and emdebian-tools 0.3.9 will be uploaded - locations to be decided depending on results of dpkg changes. If those check out, dpkg-cross 2.0.0, apt-cross 0.3.0 and emdebian-tools 0.4.0 will be uploaded to Debian unstable, dependent on dpkg-dev >= 1.14.8 (probably). 5. The SVN versions of apt-cross and emdebian-tools work with the CVS version of dpkg-cross 1.99+2.0.0pre2 as long as the patches from #439979 are applied to the *shell* version of dpkg-buildpackage. (You need the second set of patches from that bug report, [0]. 6. To restore native build functionality and still use dpkg from experimental, build dpkg-cross 1.99+2.0.0pre2 from dpkg-cross CVS to remove the cross-building diversion. Cross builds will break but native builds will proceed. 7. If you want to build gcc-4.3, remove all experimental / CVS/SVN packages, specify 'experimental' only as a deb-src and do it using the current versions in unstable. [0] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=439979#10 The moral of this story is: be careful how you use Debian experimental - it really can break things quite spectacularly. ;-) Downgrading should be painless. (If you get problems, let me know because that would be a bug.) The dpkg team are hoping to complete the cross-building support in dpkg-dev 1.14.8 in the next few days (Guillem has been ill recently) at which point the new NorthernCross-derived code will uploaded, as described. I haven't covered this before because I didn't expect anyone to try it. Everything works if you stick to unstable and that is how I've planned the entire transition. -- Neil Williams ============= http://www.data-freedom.org/ http://www.nosoftwarepatents.com/ http://www.linux.codehelp.co.uk/
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