[SOLVED] How to rebuild a Debian package for a foreign architecture?
On 2018-01-25 23:03:50 +0100, Vincent Lefevre wrote:
> On 2018-01-25 15:30:02 +0100, tomas@tuxteam.de wrote:
> > On Thu, Jan 25, 2018 at 02:56:17PM +0100, Vincent Lefevre wrote:
> > > To rebuild a Debian package, one can use:
> > >
> > > debuild -i -us -uc -b
> > >
> > > But how to rebuild a Debian package for a foreign architecture?
> > > In my case for i386 from an amd64 machine. I've tried
> > >
> > > debuild -i -us -uc -b -a i386
> > >
> > > but the build fails at some point:
> > >
> > > [...]
> > > dh_strip -a
> > > dh_strip: Compatibility levels before 9 are deprecated (level 7 in use)
> > > dh_strip: Compatibility levels before 9 are deprecated (level 7 in use)
> > > dh_strip: Compatibility levels before 9 are deprecated (level 7 in use)
> > > Can't exec "i686-linux-gnu-strip": No such file or directory at /usr/share/perl5/Debian/Debhelper/Dh_Lib.pm line 358.
> > > [...]
> >
> > It seems that you are missing the '386 (or more precisely the '686)
> > executables. Perhaps you need the package dpkg-cross.
>
> Installing dpkg-cross just installs: cross-config dpkg-cross
> libconfig-auto-perl libdebian-dpkgcross-perl. This is not
> sufficient.
According to https://wiki.debian.org/CrossCompiling, it should
have been crossbuild-essential-i386, and indeed, this installs
binutils-i686-linux-gnu (which provides i686-linux-gnu-strip).
However, it seems to install more than necessary for the
particular case of i386 on an amd64 machine.
Now, this was just one of the issues. After installing
binutils-i686-linux-gnu, the other issue was that the architecture
wasn't taken into account by debuild itself, after running
dpkg-buildpackage successfully. I eventually found a bug / limitation
in the debuild source: to be taken into account by debuild, one
needs to write -ai386 *without a space*. I've reported this bug
(real bug or lack of documentation):
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=898706
With "debuild -i -us -uc -b -ai386", I now do not get any error.
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
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