Bug#103024: dpkg-shlibdeps mostly useless on the Hurd

[Michael Banck <mbanck@debian.org>]

This patch does not seem to work for /usr/X11R6/lib, only /usr/lib:

blackbird:/tmp/chemtool-1.5+1.6alpha27# dpkg-shlibdeps.pl \
	-Tdebian/chemtool.substvars debian/chemtool/usr/bin/chemtool \
	debian/chemtool/usr/bin/cht
dpkg-shlibdeps.pl: warning: could not find any packages for
	/usr/X11R6/lib/libXi.so.6 (libXi.so.6)
dpkg-shlibdeps.pl: warning: unable to find dependency information for
	shared library libXi (soname 6, path /usr/X11R6/lib/libXi.so.6,
	dependency field Depends)
dpkg-shlibdeps.pl: warning: could not find any packages for
	/usr/X11R6/lib/libXext.so.6 (libXext.so.6)
dpkg-shlibdeps.pl: warning: unable to find dependency information for
	shared library libXext (soname 6, path /usr/X11R6/lib/libXext.so.6,
	dependency field Depends)
dpkg-shlibdeps.pl: warning: could not find any packages for
	/usr/X11R6/lib/libX11.so.6 (libX11.so.6)
dpkg-shlibdeps.pl: warning: unable to find dependency information for
	shared library libX11 (soname 6, path /usr/X11R6/lib/libX11.so.6,
	dependency field Depends)
blackbird:/tmp/chemtool-1.5+1.6alpha27# cat debian/chemtool.substvars
shlibs:Depends=libc6 (>= 2.3.1-1), libglib1.2 (>= 1.2.0), libgtk1.2 (>=
        1.2.10-4)

This is what the current unmodified dpkg-shlibdeps on unstable do:
blackbird:/tmp/chemtool-1.5+1.6alpha27# dpkg-shlibdeps.pl.orig \
	-Tdebian/chemtool.substvars debian/chemtool/usr/bin/chemtool \
	debian/chemtool/usr/bin/cht
dpkg-shlibdeps.pl.orig: warning: could not find any packages for
	/lib/libgtk-1.2.so.0 (libgtk-1.2.so.0)
dpkg-shlibdeps.pl.orig: warning: unable to find dependency information
	for shared library libgtk-1.2 (soname 0, path /lib/libgtk-1.2.so.0,
	dependency field Depends)
dpkg-shlibdeps.pl.orig: warning: could not find any packages for
	/lib/libgdk-1.2.so.0 (libgdk-1.2.so.0)
dpkg-shlibdeps.pl.orig: warning: unable to find dependency information
	for shared library libgdk-1.2 (soname 0, path /lib/libgdk-1.2.so.0,
	dependency field Depends)
dpkg-shlibdeps.pl.orig: warning: could not find any packages for
	/lib/libgmodule-1.2.so.0 (libgmodule-1.2.so.0)
dpkg-shlibdeps.pl.orig: warning: unable to find dependency information
	for shared library libgmodule-1.2 (soname 0, path
	/lib/libgmodule-1.2.so.0, dependency field Depends)
dpkg-shlibdeps.pl.orig: warning: could not find any packages for
	/lib/libglib-1.2.so.0 (libglib-1.2.so.0)
dpkg-shlibdeps.pl.orig: warning: unable to find dependency information
	for shared library libglib-1.2 (soname 0, path /lib/libglib-1.2.so.0,
	dependency field Depends)
blackbird:/tmp/chemtool-1.5+1.6alpha27# cat debian/chemtool.substvars  
shlibs:Depends=libc6 (>= 2.3.1-1), xlibs (>> 4.1.0)

Here, the xlibs get considered correctly.

blackbird:/tmp/chemtool-1.5+1.6alpha27# dpkg-shlibdeps \
	-Tdebian/chemtool.substvars debian/chemtool/usr/bin/chemtool \
	debian/chemtool/usr/bin/cht
blackbird:/tmp/chemtool-1.5+1.6alpha27# cat  debian/chemtool.substvars 
shlibs:Depends=libglib1.2 (>= 1.2.0), libc6 (>= 2.3.1-1), xlibs (>>
	4.1.0), libgtk1.2 (>= 1.2.10-4)

This dpkg-shlibdeps invocation is from the python version in current
cvs, which seems to do fine without modifications. Any ETA for that?

Note that I tested this on linux in an unstable chroot, where I moved
all the stuff under /usr into / and made the symlink like on the Hurd.

The orginal substvars from the package look like:
shlibs:Depends=libc6 (>= 2.3.1-1), libglib1.2 (>= 1.2.0), libgtk1.2 (>=
	1.2.10-4), xlibs (>> 4.1.0)

regards,

Michael