[debhelper-devel] Bug#829142: debhelper: dh_strip triggers fatal lintian error for packages with multiple hardlinks

[Sven Joachim]

Package: debhelper
Version: 9.20160618.1
Severity: serious

For packages which ship files with multiple hardlinks, dh_strip produces
broken -dbgsym packages that trigger the
library-in-debug-or-profile-should-not-be-stripped lintian error, which
unfortunately leads to auto-rejection by the FTP masters and cannot be
overridden.  To reproduce the problem:

- Find a suitable source package, say "apt-get source ed".

- Edit debian/rules and add this override to it to produce a file with
  two hardlinks:

override_dh_strip:
	ln debian/ed/bin/ed debian/ed/bin/ed2
	dh_strip

- Build the package, this already produces a warning from objcopy:

,----
| make[1]: Verzeichnis „/tmp/ed-1.10“ wird betreten
| ln debian/ed/bin/ed debian/ed/bin/ed2
| dh_strip
| 	install -d debian/.debhelper/ed/dbgsym-root/usr/lib/debug/.build-id/d8
| 	objcopy --only-keep-debug --compress-debug-sections debian/ed/bin/ed2 debian/.debhelper/ed/dbgsym-root/usr/lib/debug/.build-id/d8/571320f0b57dd55598aaff154e79dfca08cae2.debug
| 	chmod 0644 debian/.debhelper/ed/dbgsym-root/usr/lib/debug/.build-id/d8/571320f0b57dd55598aaff154e79dfca08cae2.debug
| 	strip --remove-section=.comment --remove-section=.note debian/ed/bin/ed2
| 	objcopy --add-gnu-debuglink debian/.debhelper/ed/dbgsym-root/usr/lib/debug/.build-id/d8/571320f0b57dd55598aaff154e79dfca08cae2.debug debian/ed/bin/ed2
| 	objcopy --only-keep-debug --compress-debug-sections debian/ed/bin/ed debian/.debhelper/ed/dbgsym-root/usr/lib/debug/.build-id/d8/571320f0b57dd55598aaff154e79dfca08cae2.debug
| 	chmod 0644 debian/.debhelper/ed/dbgsym-root/usr/lib/debug/.build-id/d8/571320f0b57dd55598aaff154e79dfca08cae2.debug
| 	strip --remove-section=.comment --remove-section=.note debian/ed/bin/ed
| 	objcopy --add-gnu-debuglink debian/.debhelper/ed/dbgsym-root/usr/lib/debug/.build-id/d8/571320f0b57dd55598aaff154e79dfca08cae2.debug debian/ed/bin/ed
| objcopy: debian/ed/bin/stNvhs2Q: debuglink section already exists
`----

- Run lintian on the -dbgsym package, this gives an error and a warning:

,----
| E: ed-dbgsym: library-in-debug-or-profile-should-not-be-stripped usr/lib/debug/.build-id/d8/571320f0b57dd55598aaff154e79dfca08cae2.debug
| W: ed-dbgsym: debug-file-with-no-debug-symbols usr/lib/debug/.build-id/d8/571320f0b57dd55598aaff154e79dfca08cae2.debug
`----

Today, the mesa 12.0.0~rc4-1 upload has been auto-rejected because of
this problem: https://lists.debian.org/debian-x/2016/06/msg00204.html.


-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (101, 'experimental')
Architecture: i386 (x86_64)

Kernel: Linux 4.6.3-nouveau (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages debhelper depends on:
ii  autotools-dev            20160430.1
ii  binutils                 2.26.1-1
ii  dh-autoreconf            12
ii  dh-strip-nondeterminism  0.019-1
ii  dpkg                     1.18.8
ii  dpkg-dev                 1.18.7
ii  file                     1:5.28-2
ii  libdpkg-perl             1.18.7
ii  man-db                   2.7.5-1
ii  perl                     5.22.2-1
ii  po-debconf               1.0.19

debhelper recommends no packages.

Versions of packages debhelper suggests:
ii  dh-make  2.201606

-- no debconf information