Bug#1115395: dpkg-shlibdeps fails to find libraries if /lib is removed from ld.so.conf search path

- with /lib

> # /usr/bin/dpkg-shlibdeps -v -Tdebian/libhe5-hdfeos0t64.substvars debian/libhe5-hdfeos0t64/usr/lib/x86_64-linux-gnu/libhe5_hdfeos.so.0.0.0 
> dpkg-shlibdeps: debug: >> Scanning debian/libhe5-hdfeos0t64/usr/lib/x86_64-linux-gnu/libhe5_hdfeos.so.0.0.0 (for Depends field)
> dpkg-shlibdeps: debug: Library libgctp-2.0.0.so found in /lib/x86_64-linux-gnu/libgctp-2.0.0.so
> dpkg-shlibdeps: debug: Library libgctp-2.0.0.so found in /usr/lib/x86_64-linux-gnu/libgctp-2.0.0.so
> dpkg-shlibdeps: debug: Library libhdf5_serial_hl.so.310 found in /lib/x86_64-linux-gnu/libhdf5_serial_hl.so.310
> dpkg-shlibdeps: debug: Library libhdf5_serial_hl.so.310 found in /usr/lib/x86_64-linux-gnu/libhdf5_serial_hl.so.310
> dpkg-shlibdeps: debug: Library libhdf5_serial.so.310 found in /lib/x86_64-linux-gnu/libhdf5_serial.so.310
> dpkg-shlibdeps: debug: Library libhdf5_serial.so.310 found in /usr/lib/x86_64-linux-gnu/libhdf5_serial.so.310
> dpkg-shlibdeps: debug: Library libm.so.6 found in /lib/x86_64-linux-gnu/libm.so.6
> dpkg-shlibdeps: debug: Library libm.so.6 found in /usr/lib/x86_64-linux-gnu/libm.so.6
> dpkg-shlibdeps: debug: Library libc.so.6 found in /lib/x86_64-linux-gnu/libc.so.6
> dpkg-shlibdeps: debug: Library libc.so.6 found in /usr/lib/x86_64-linux-gnu/libc.so.6
> dpkg-shlibdeps: debug: Using shlibs+objdump for libgctp-2.0.0.so (file /lib/x86_64-linux-gnu/libgctp-2.0.0.so)
> dpkg-shlibdeps: debug:  Looking up shlibs dependency of libgctp-2.0.0.so provided by 'libgctp-2.0.0:amd64'
> dpkg-shlibdeps: debug:  Found libgctp-2.0.0 (>= 2.0.0) in /var/lib/dpkg/info/libgctp-2.0.0:amd64.shlibs
> dpkg-shlibdeps: debug: Using symbols file /var/lib/dpkg/info/libhdf5-hl-310:amd64.symbols for libhdf5_serial_hl.so.310
> dpkg-shlibdeps: debug: Using symbols file /var/lib/dpkg/info/libhdf5-310:amd64.symbols for libhdf5_serial.so.310
> dpkg-shlibdeps: debug: Using symbols file /var/lib/dpkg/info/libc6:amd64.symbols for libm.so.6
> dpkg-shlibdeps: debug: Using symbols file /var/lib/dpkg/info/libc6:amd64.symbols for libc.so.6

- without /lib

> # /usr/bin/dpkg-shlibdeps -v -Tdebian/libhe5-hdfeos0t64.substvars debian/libhe5-hdfeos0t64/usr/lib/x86_64-linux-gnu/libhe5_hdfeos.so.0.0.0 
> dpkg-shlibdeps: debug: >> Scanning debian/libhe5-hdfeos0t64/usr/lib/x86_64-linux-gnu/libhe5_hdfeos.so.0.0.0 (for Depends field)
> dpkg-shlibdeps: debug: Library libgctp-2.0.0.so found in /usr/lib/x86_64-linux-gnu/libgctp-2.0.0.so
> dpkg-shlibdeps: debug: Library libhdf5_serial_hl.so.310 found in /usr/lib/x86_64-linux-gnu/libhdf5_serial_hl.so.310
> dpkg-shlibdeps: debug: Library libhdf5_serial.so.310 found in /usr/lib/x86_64-linux-gnu/libhdf5_serial.so.310
> dpkg-shlibdeps: debug: Library libm.so.6 found in /usr/lib/x86_64-linux-gnu/libm.so.6
> dpkg-shlibdeps: debug: Library libc.so.6 found in /usr/lib/x86_64-linux-gnu/libc.so.6
> dpkg-shlibdeps: debug: Using shlibs+objdump for libgctp-2.0.0.so (file /usr/lib/x86_64-linux-gnu/libgctp-2.0.0.so)
> dpkg-shlibdeps: debug:  Looking up shlibs dependency of libgctp-2.0.0.so provided by 'libgctp-dev'
> dpkg-shlibdeps: debug:  Found nothing
> dpkg-shlibdeps: debug: No shlibs+objdump info available, trying next package for /usr/lib/x86_64-linux-gnu/libgctp-2.0.0.so
> dpkg-shlibdeps: error: no dependency information found for /usr/lib/x86_64-linux-gnu/libgctp-2.0.0.so (used by debian/libhe5-hdfeos0t64/usr/lib/x86_64-linux-gnu/libhe5_hdfeos.so.0.0.0)
> dpkg-shlibdeps: hint: check if the library actually comes from a package

-----BEGIN PGP SIGNATURE-----
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=lOmy
-----END PGP SIGNATURE-----