buildds: Using LD_PRELOAD & LD_LIBRARY_PATH

[Mathieu Malaterre <malat@debian.org>]

[CC me please]

Dear DDs,

I am staring at:

* https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1001136

One can verify that sh4 build went fine for this upload:

* https://buildd.debian.org/status/fetch.php?pkg=openvdb&arch=sh4&ver=9.0.0-3&stamp=1638662998&raw=0

It should be noticed that, this is a duplicate of:

* https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=997080

As mentioned in the above:

[...]
I cannot reproduce the issue:
* On my local sid schroot,
* On barriere.d.o
* The exp. buildds are working as expected:
** https://buildd.debian.org/status/fetch.php?pkg=openvdb&arch=amd64&ver=9.0.0-2&stamp=1638489598&raw=0
[...]

Could someone please confirm if the following command line invocation
is acceptable in d/rules within buildds environment:

[...]
debian/vdb_print.1: debian/vdb_print.1.in
        LD_PRELOAD= LD_LIBRARY_PATH=./debian/tmp/usr/lib/$(DEB_HOST_MULTIARCH) \
          help2man --version-string=$(VER_FULL) --include=$<
--output=$@ --no-info \
          --no-discard-stderr ./debian/tmp/usr/bin/vdb_print
[...]

Thanks much,