Bug#482727: libdrm: FTBFS when converted to new source format 3.0 (quilt)
Package: libdrm
Version: 2.3.0-4
Severity: minor
Usertags: 3.0-quilt-by-default
To prepare a possible switch to the new source package format "3.0
(quilt)" [1], I converted all source packages and rebuilt the packages
afterwards to see what breaks, and libdrm does break. To reproduce the
problem you can do this:
$ apt-get source libdrm
$ sed -i -e '/^Source:/ aFormat: 3.0 (quilt)' libdrm-2.3.0/debian/control
$ dpkg-source -b libdrm-2.3.0
$ dpkg-source -x libdrm_2.3.0-4.dsc
$ cd libdrm-2.3.0 && debuild -us -uc
In this process, if the .diff.gz contains changes to upstream files,
dpkg-source will have created a corresponding patch in
debian/patches/debian-changes-2.3.0-4 and will have registered that
patch in a quilt series (debian/patches/series, it is created if needed).
All the patches listed in the "series" file are applied directly during
the extraction (dpkg-source -x). quilt itself is used if available (and
will thus lead to the creation of the .pc directory), otherwise
dpkg-source applies the patches by itself. For more information about the
new source package format see the manual page dpkg-source(1).
In the case of libdrm, the .diff.gz contains changes to
config.sub/guess because your "clean" target in debian/rules replaces
those files. With the conversion to the new source format, those
changes end up as a patch in debian/patches/ and when the package
tries to apply that patch it will fail because the clean rule has already
replaced those files.
To fix this, please make sure that the .diff.gz doesn't contain those
changes. You can easily do that by copying
/usr/share/misc/config.{sub,guess} in place just before the ./configure
call and by removing (rm -f config.sug config.guess) the files
in the clean target. (I just filed #482716 against autotools-dev so that
/usr/share/doc/autotools-dev/README.Debian.gz is updated in that regard)
Cheers,
[1] http://lists.debian.org/debian-devel-announce/2008/04/msg00004.html
--
Raphael Hertzog
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