[Bug 1792544] Re: demotion of pcre3 in favor of pcre2

[Andreas Hasenack]

I've seen the wget debian change, but just switching builddeps from pcre3-dev to pcre2-dev and rebuilding isn't enough. The package ends up not finding pcre and doesn't enable it:
checking for PCRE... no
checking pcre.h usability... no
checking pcre.h presence... no
checking for pcre.h... no
...
  Libs:              -luuid -lidn2 -lnettle -lgnutls -lz -lpsl 

So while the package builds, it's not using pcre.

I tried to switch apache, and while I could make it find pcre2-config and use it, pcre2 has different libraries than pcre3:
pcre3-config --libs: -lpcre
pcre2-config --libs: no such parameter

In pcre2, we have --libs8, --libs-posix, --libs32 and --libs16, but no
--libs. Is this a bug in pcre2-config?

Any quick tips about this before I dig in further?

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https://bugs.launchpad.net/bugs/1792544

Title:
  demotion of pcre3 in favor of pcre2

Status in aide package in Ubuntu:
  New
Status in apache2 package in Ubuntu:
  New
Status in apr-util package in Ubuntu:
  New
Status in clamav package in Ubuntu:
  Triaged
Status in exim4 package in Ubuntu:
  New
Status in freeradius package in Ubuntu:
  New
Status in git package in Ubuntu:
  Triaged
Status in glib2.0 package in Ubuntu:
  New
Status in grep package in Ubuntu:
  New
Status in haproxy package in Ubuntu:
  New
Status in libpam-mount package in Ubuntu:
  New
Status in libselinux package in Ubuntu:
  New
Status in nginx package in Ubuntu:
  Triaged
Status in nmap package in Ubuntu:
  New
Status in pcre3 package in Ubuntu:
  Confirmed
Status in php7.2 package in Ubuntu:
  Triaged
Status in postfix package in Ubuntu:
  New
Status in python-pyscss package in Ubuntu:
  New
Status in quagga package in Ubuntu:
  New
Status in rasqal package in Ubuntu:
  New
Status in slang2 package in Ubuntu:
  New
Status in sssd package in Ubuntu:
  Triaged
Status in wget package in Ubuntu:
  Triaged
Status in zsh package in Ubuntu:
  Triaged

Bug description:
  demotion of pcre3 in favor of pcre2. These packages need analysis what
  needs to be done for the demotion of pcre3:

  Packages which are ready to build with pcre2 should be marked as
  'Triaged', packages which are not ready should be marked as
  'Incomplete'.

  aide
  apache2
  apr-util
  clamav
  exim4
  freeradius
  git
  glib2.0
  grep
  haproxy
  libpam-mount
  libselinux
  nginx
  nmap
  php7.2
  postfix
  python-pyscss
  quagga
  rasqal
  slang2
  sssd
  wget
  zsh

  ------

  For clarification: pcre2 is actually newer than pcre3.  pcre3 is just
  poorly named (according to jbicha).

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