Cannot compile without Postgres 9.3+ libraries in pgdg on Ubuntu 14.04 about repmgr

[martinisoft]

Think I might have found the commit that changed the library in 9.3+

[martinmarques]

root@debian7:~# dlocate /usr/include/postgresql/libpq-fe.h
libpq-dev: /usr/include/postgresql/libpq-fe.h

Which version of libpq-dev and libpq are you using?

Regards,

[martinisoft]

$ sudo dpkg -l | grep postgres
ii  pgdg-keyring                        2014.1                        all          keyring for apt.postgresql.org
ii  postgresql-9.2                      9.2.10-1.pgdg14.04+1          amd64        object-relational SQL database, version 9.2 server
ii  postgresql-client-9.2               9.2.10-1.pgdg14.04+1          amd64        front-end programs for PostgreSQL 9.2
ii  postgresql-client-common            166.pgdg14.04+1               all          manager for multiple PostgreSQL client versions
ii  postgresql-common                   166.pgdg14.04+1               all          PostgreSQL database-cluster manager
ii  postgresql-server-dev-9.2           9.2.10-1.pgdg14.04+1          amd64        development files for PostgreSQL 9.2 server-side programming

$ sudo dpkg -l | grep libpq
ii  libpq-dev                           9.4.1-1.pgdg14.04+1           amd64        header files for libpq5 (PostgreSQL library)
ii  libpq5:amd64                        9.4.1-1.pgdg14.04+1           amd64        PostgreSQL C client library

[martinisoft]

Looks like pgdg is pulling in a 9.4 series libpq as a dependency, even when installing the 9.2 server dev package.

[dimitri]

Yes it is, by design, please see the FAQ and install the setup you seem to need as described there:

https://wiki.postgresql.org/wiki/Apt/FAQ#I_want_libpq5_for_version_X.2C_but_there_is_only_version_Y_in_the_repository

[martinisoft]

@dimitri That's the fun part, I am doing that.

$ sudo cat /etc/apt/sources.list.d/apt.postgresql.org.list
deb     http://apt.postgresql.org/pub/repos/apt trusty-pgdg main 9.2

[martinisoft]

I'm trying various apt pinning techniques to get it to attempt installing 9.2 based libs. So far my hunch is that 9.3+ breaks library compatibility so I need to somehow force apt to attempt grabbing the older libraries even though the newer one is supposed to be, but is really not compatible with 9.0 through 9.2 libraries.

[martinisoft]

A lot changed in 9.3 so I am not surprised a break happened. I can submit a PR if you like to update the README here to warn people that 9.2 and earlier cannot be compiled on Ubuntu against the pgdg repo (or official Ubuntu in 14.04 and newer).

[martinmarques]

Add the 9.x at the end of you apt source line and you will have the appropriate libpq packages:

cat /etc/apt/sources.list.d/pgdg.list
deb http://apt.postgresql.org/pub/repos/apt/ wheezy-pgdg main 9.2

apt-cache policy libpq-dev
libpq-dev:
Instalados: 9.4.1-1.pgdg70+1
Candidato: 9.4.1-1.pgdg70+1
Tabla de versión:
*** 9.4.1-1.pgdg70+1 0
500 http://apt.postgresql.org/pub/repos/apt/ wheezy-pgdg/main amd64 Packages
100 /var/lib/dpkg/status
9.2.10-1.pgdg70+1 0
500 http://apt.postgresql.org/pub/repos/apt/ wheezy-pgdg/9.2 amd64 Packages
9.1.15-0+deb7u1 0
500 http://security.debian.org/ wheezy/updates/main amd64 Packages
9.1.14-0+deb7u1 0
500 http://cdn.debian.net/debian/ wheezy/main amd64 Packages

Then you can install the appropriate version you need.

Regards,

[martinisoft]

@martinmarques That's the thing. That version will not compile at all (see previous messages) on Ubuntu 14.04 against pgdg with 9.2 set for that repo. If I upgrade to PostgreSQL 9.3 it's totally fine and compiles normally.

[martinisoft]

@martinmarques If it's working for you on wheezy then it might be a broken Ubuntu Trusty package.

[martinisoft]

If anyone here likes I can post an exemplar Chef cookbook to prove this bug exists and that I am following the readme link people are pointing out here.

[martinmarques]

Could you send the apt line for the pgdg repo? Also the output of "apt-cache policy libpq"?

If you install libpq, libpq-dev and postgresql-9.x-server-dev from the same version it will compile with no errors.

[martinisoft]

@martinmarques pasted below. So you know, the apt line they suggest puts you into two apt sources, main and the version number. In my case, 9.2. Since the libpq-dev package does not exist in the 9.2 repo, any package depending on it always pulls the main version which currently is 9.4.1. I suggest you give this a try by removing libpq-dev on your system and installing postgresql-server-dev-9.2 and I guarantee it will pull in libpq-dev 9.4.1 because it exists in main, not 9.2.

$ sudo cat /etc/apt/sources.list.d/apt.postgresql.org.list
deb     http://apt.postgresql.org/pub/repos/apt trusty-pgdg main 9.2

$ sudo dpkg -l | grep postgres
ii  pgdg-keyring                        2014.1                        all          keyring for apt.postgresql.org
ii  postgresql-9.2                      9.2.10-1.pgdg14.04+1          amd64        object-relational SQL database, version 9.2 server
ii  postgresql-client-9.2               9.2.10-1.pgdg14.04+1          amd64        front-end programs for PostgreSQL 9.2
ii  postgresql-client-common            166.pgdg14.04+1               all          manager for multiple PostgreSQL client versions
ii  postgresql-common                   166.pgdg14.04+1               all          PostgreSQL database-cluster manager
ii  postgresql-server-dev-9.2           9.2.10-1.pgdg14.04+1          amd64        development files for PostgreSQL 9.2 server-side programming

$ sudo dpkg -l | grep libpq
ii  libpq-dev                           9.4.1-1.pgdg14.04+1           amd64        header files for libpq5 (PostgreSQL library)
ii  libpq5:amd64                        9.4.1-1.pgdg14.04+1           amd64        PostgreSQL C client library

[martinisoft]

I think the better course of action here is to close this and bring up the issue with PostgreSQL directly since it's a backwards compatibility issue and I can work on presenting a failing test. Thank you for the replies folks and again I'll offer a separate pull request to update your docs with a warning about 9.2 incompatibility on Ubuntu trusty if you'd like.