[Bug 1071928] Re: isc-dhcp-server-ldap (4.2.4-1ubuntu10.1) is not capable of ldap

[Christian Hoffmann]

I stumbled upon this problem as well.

The root cause is an error in the build process, more specifically the
debian/rules Makefile.

First, the ldap flavour of the binary is built and moved to isc-dhcp-server-ldap/dhcpd. This works as expected, the resulting binary contains ldap symbols as expected.
Then, the normal flavour is built. The binary is left in server/dhcpd (like in a vanilla build).

Then, both of these steps are repeated again, and this is the actual
problem. First, it's a useless step, second, it leads to the broken ldap
binary as no make (dist)clean is invoked inbetween which makes "make"
think that server/dhcpd is already the correct ldap binary (which it is
not; it is a left-over from the first normal build); afterwards, the
build process (debian/rules) overwrites the correct ldap binary in isc-
dhcp-server-ldap/dhcpd with a vanilla binary. The normal flavour is
"built" again as well, but this does not break anything.

The problem is complex and the patch is trivial, but I don't know if it
is correct. Works for me, but YMMV. The patch fixes this problem and
probably reduces build time, as the process runs only twice instead of 4
times.

The actual problem is that the "clean" target is invoked between builds,
which also calls dh_clean, which in fact removes all the *stamp files,
which usually avoid accidental duplicate builds. I've modified the build
target to call "buildclean", which does the same thing as before, just
without the dh_clean.

I would also consider this bug report really severe, as it renders the
given package completely unusuable and breaks existing setups.

** Patch added: "isc-dhcp-4.2.4-fix-ldap-build.patch"
   https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1071928/+attachment/3484291/+files/isc-dhcp-4.2.4-fix-ldap-build.patch

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https://bugs.launchpad.net/bugs/1071928

Title:
  isc-dhcp-server-ldap (4.2.4-1ubuntu10.1) is not capable of ldap

Status in “isc-dhcp” package in Ubuntu:
  New

Bug description:
  When I try to start dhcpd (ldap) I get this error:

  Internet Systems Consortium DHCP Server 4.2.4
  Copyright 2004-2012 Internet Systems Consortium.
  All rights reserved.
  For info, please visit https://www.isc.org/software/dhcp/
  /etc/dhcp/dhcpd.conf line 14: semicolon expected.
  ldap-server "10.0.0.1"
               ^
  /etc/dhcp/dhcpd.conf line 15: semicolon expected.
  ldap-port 389;
             ^

  
  Also ldd /usr/sbin/dhcpd is not reporting any ldap dependency
  linux-vdso.so.1 =>  (0x00007fffff9ff000)
  libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f3420324000)
  /lib64/ld-linux-x86-64.so.2 (0x00007f3420af7000)

  
  And in the package dependency libldap is also not listed. So I guess isc-dhcp-server-ldap ist not compiled against ldap library.

  I know from version 4.1.ESV-R4-0ubuntu5.5 that isc-dhcp-server-ldap
  requires the libldap-2.4-2 library.

  -Ivo

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