Public bug reported:

Unable to use ld.conf methods (LD_LIBRARY_PATH, LD_PRELOAD) to locate
modules.

Context: HP ThinPro 7.1 Service Pack 8 (latest) is still based on Ubuntu 16.04 
LTS
Use Case: Thin Client -- HP will not allow Customers to install anything to OS
partition, e.g. to /usr.  automount installed from Canonical's repository but to
/usr on a flash drive e.g. /media/GenericFlash_sdb1/usr

the string: /usr/lib/x86_64-linux-gnu/autofs appears in the binary.  automount
does not search /media/GenericFlash_sdb1/usr defined with LD_LIBRARY_PATH.

Source Package:
* http://archive.ubuntu.com/ubuntu/pool/main/a/autofs/autofs_5.1.1.orig.tar.gz
* 
http://archive.ubuntu.com/ubuntu/pool/main/a/autofs/autofs_5.1.1-1ubuntu3.debian.tar.xz

Release:
Description:    ThinPro 7.1.0
Release:        7.1.0

Binary Package:
Package: autofs (5.1.1-1ubuntu3) autofs_5.1.1-1ubuntu3_amd64.deb
* 
http://de.archive.ubuntu.com/ubuntu/pool/main/a/autofs/autofs_5.1.1-1ubuntu3_amd64.deb


Expected Behaviour:
Setting LD_LIBRARY_PATH=/media/GenericFlash_sdb1/usr/lib/x86_64-linux-gnu/autofs
overriding compiled location of modules so that automount works correctly.

Actual Behaviour:
automount fails to find its modules:

Code:

# /media/GenericFlash_sdb1/usr/sbin/automount -V

Linux automount version 5.1.1

Directories:
        config dir:     /etc/default
        maps dir:       /etc
        modules dir:    /usr/lib/x86_64-linux-gnu/autofs

Compile options:
  ENABLE_FORCED_SHUTDOWN ENABLE_IGNORE_BUSY_MOUNTS WITH_HESIOD 
  WITH_LDAP WITH_SASL LIBXML2_WORKAROUND 


# ldd /media/GenericFlash_sdb1/usr/sbin/automount
       linux-vdso.so.1 =>  (0x00007ffc51113000)
       libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 
(0x00007f1729ec8000)
       libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f1729cc0000)
       libxml2.so.2 => /usr/lib/x86_64-linux-gnu/libxml2.so.2 
(0x00007f1729900000)
       libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f1729530000)
       /lib64/ld-linux-x86-64.so.2 (0x00007f172a330000)
       libicuuc.so.55 => /usr/lib/x86_64-linux-gnu/libicuuc.so.55 
(0x00007f1729198000)
       libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f1728f78000)
       liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f1728d50000)
       libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f1728a40000)
       libicudata.so.55 => /usr/lib/x86_64-linux-gnu/libicudata.so.55 
(0x00007f1726f88000)
       libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 
(0x00007f1726c00000)
       libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f17269e8000)

# LD_DEBUG=files 
LD_PRELOAD=/media/GenericFlash_sdb1/usr/lib/x86_64-linux-gnu/autofs/lookup_file.so
 /media/GenericFlash_sdb1/usr/sbin/automount -d -v -f
      9852:     WARNING: Unsupported flag value(s) of 0x8000000 in DT_FLAGS_1.
      9852:     
file=/media/GenericFlash_sdb1/usr/lib/x86_64-linux-gnu/autofs/lookup_file.so 
[0];  needed by /media/GenericFlash_sdb1/usr/sbin/automount [0]
      9852:     
file=/media/GenericFlash_sdb1/usr/lib/x86_64-linux-gnu/autofs/lookup_file.so 
[0];  generating link map
      9852:       dynamic: 0x00007f1737094d18  base: 0x00007f1736e68000   size: 
0x000000000022f870
      9852:         entry: 0x00007f1736e70f00  phdr: 0x00007f1736e68040  phnum: 
                 7
      9852:
      9852:     file=libpthread.so.0 [0];  needed by 
/media/GenericFlash_sdb1/usr/sbin/automount [0]
      9852:     file=libpthread.so.0 [0];  generating link map
      9852:       dynamic: 0x00007f1736e5fd50  base: 0x00007f1736c48000   size: 
0x000000000021c428
      9852:         entry: 0x00007f1736c4e0b0  phdr: 0x00007f1736c48040  phnum: 
                 9
      9852:
      9852:     file=libdl.so.2 [0];  needed by 
/media/GenericFlash_sdb1/usr/sbin/automount [0]
      9852:     file=libdl.so.2 [0];  generating link map
      9852:       dynamic: 0x00007f1736c42d88  base: 0x00007f1736a40000   size: 
0x00000000002030f0
      9852:         entry: 0x00007f1736a40da0  phdr: 0x00007f1736a40040  phnum: 
                 7
      9852:
      9852:     file=libxml2.so.2 [0];  needed by 
/media/GenericFlash_sdb1/usr/sbin/automount [0]
      9852:     file=libxml2.so.2 [0];  generating link map
      9852:       dynamic: 0x00007f1736a37808  base: 0x00007f1736680000   size: 
0x00000000003ba9b8
      9852:         entry: 0x00007f17366ad6f0  phdr: 0x00007f1736680040  phnum: 
                 7
      9852:
      9852:     file=libc.so.6 [0];  needed by 
/media/GenericFlash_sdb1/usr/sbin/automount [0]
      9852:     file=libc.so.6 [0];  generating link map
      9852:       dynamic: 0x00007f1736673ba0  base: 0x00007f17362b0000   size: 
0x00000000003c99a0
      9852:         entry: 0x00007f17362d0950  phdr: 0x00007f17362b0040  phnum: 
                10
      9852:
      9852:     file=libicuuc.so.55 [0];  needed by 
/usr/lib/x86_64-linux-gnu/libxml2.so.2 [0]
      9852:     file=libicuuc.so.55 [0];  generating link map
      9852:       dynamic: 0x00007f17362a6ae0  base: 0x00007f1735f18000   size: 
0x0000000000393b20
      9852:         entry: 0x00007f1735f6d4d0  phdr: 0x00007f1735f18040  phnum: 
                 7
      9852:
      9852:     file=libz.so.1 [0];  needed by 
/usr/lib/x86_64-linux-gnu/libxml2.so.2 [0]
      9852:     file=libz.so.1 [0];  generating link map
      9852:       dynamic: 0x00007f1735f10dd0  base: 0x00007f1735cf8000   size: 
0x0000000000219128
      9852:         entry: 0x00007f1735cf9db0  phdr: 0x00007f1735cf8040  phnum: 
                 7
      9852:
      9852:     file=liblzma.so.5 [0];  needed by 
/usr/lib/x86_64-linux-gnu/libxml2.so.2 [0]
      9852:     file=liblzma.so.5 [0];  generating link map
      9852:       dynamic: 0x00007f1735cf1dc0  base: 0x00007f1735ad0000   size: 
0x0000000000222078
      9852:         entry: 0x00007f1735ad2090  phdr: 0x00007f1735ad0040  phnum: 
                 7
      9852:
      9852:     file=libm.so.6 [0];  needed by 
/usr/lib/x86_64-linux-gnu/libxml2.so.2 [0]
      9852:     file=libm.so.6 [0];  generating link map
      9852:       dynamic: 0x00007f1735ac7d88  base: 0x00007f17357c0000   size: 
0x00000000003080f8
      9852:         entry: 0x00007f17357c5600  phdr: 0x00007f17357c0040  phnum: 
                 7
      9852:
      9852:     file=libicudata.so.55 [0];  needed by 
/usr/lib/x86_64-linux-gnu/libicuuc.so.55 [0]
      9852:     file=libicudata.so.55 [0];  generating link map
      9852:       dynamic: 0x00007f17357bddf0  base: 0x00007f1733d08000   size: 
0x0000000001ab6010
      9852:         entry: 0x00007f1733d08530  phdr: 0x00007f1733d08040  phnum: 
                 6
      9852:
      9852:     file=libstdc++.so.6 [0];  needed by 
/usr/lib/x86_64-linux-gnu/libicuuc.so.55 [0]
      9852:     file=libstdc++.so.6 [0];  generating link map
      9852:       dynamic: 0x00007f1733cfad50  base: 0x00007f1733980000   size: 
0x0000000000381400
      9852:         entry: 0x00007f1733a09d20  phdr: 0x00007f1733980040  phnum: 
                 8
      9852:
      9852:     file=libgcc_s.so.1 [0];  needed by 
/usr/lib/x86_64-linux-gnu/libicuuc.so.55 [0]
      9852:     file=libgcc_s.so.1 [0];  generating link map
      9852:       dynamic: 0x00007f173397d2b0  base: 0x00007f1733768000   size: 
0x0000000000215910
      9852:         entry: 0x00007f173376aa70  phdr: 0x00007f1733768040  phnum: 
                 6
      9852:
      9852:     calling init: /lib/x86_64-linux-gnu/libpthread.so.0
      9852:     calling init: /lib/x86_64-linux-gnu/libc.so.6
      9852:     calling init: /lib/x86_64-linux-gnu/libgcc_s.so.1
      9852:     calling init: /lib/x86_64-linux-gnu/libm.so.6
      9852:     calling init: /usr/lib/x86_64-linux-gnu/libstdc++.so.6
      9852:     calling init: /usr/lib/x86_64-linux-gnu/libicudata.so.55
      9852:     calling init: /lib/x86_64-linux-gnu/libdl.so.2
      9852:     calling init: /lib/x86_64-linux-gnu/liblzma.so.5
      9852:     calling init: /lib/x86_64-linux-gnu/libz.so.1
      9852:     calling init: /usr/lib/x86_64-linux-gnu/libicuuc.so.55
      9852:     calling init: /usr/lib/x86_64-linux-gnu/libxml2.so.2
      9852:     calling init: 
/media/GenericFlash_sdb1/usr/lib/x86_64-linux-gnu/autofs/lookup_file.so
      9852:     initialize program: /media/GenericFlash_sdb1/usr/sbin/automount
      9852:     transferring control: 
/media/GenericFlash_sdb1/usr/sbin/automount
Starting automounter version 5.1.1, master map /etc/auto.master
using kernel protocol version 5.05
      9852:     file=libxml2.so [0];  dynamically loaded by 
/media/GenericFlash_sdb1/usr/sbin/automount [0]
      9852:     opening file=/usr/lib/x86_64-linux-gnu/libxml2.so.2 [0]; 
direct_opencount=1
lookup_nss_read_master: reading master file /etc/auto.master
      9852:     file=/usr/lib/x86_64-linux-gnu/autofs/lookup_file.so [0];  
dynamically loaded by /media/GenericFlash_sdb1/usr/sbin/automount [0]
open_lookup:93: cannot open lookup module file 
(/usr/lib/x86_64-linux-gnu/autofs/lookup_file.so:
cannot open shared object file: No such file or directory)
no mounts in table

Resolution Requested:
If this cannot be accepted as a bug, pointers to a work around given 
restrictions placed by HP and that all Linux machines here are thin clients and 
not development environments.

Thank you.

** Affects: autofs (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1891551

Title:
  (Ubuntu 16.04) automount 5.1.1 hardcoding libraries

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