pg gem install fails, cannot find libpq-fe.h header - centos

Whenever I run bundle install on my VPS (CentOS Linux release 7.0.1406 (Core)) I get an error when installing the pg gem.
No pg_config... trying anyway. If building fails, please try again with
--with-pg-config=/path/to/pg_config
checking for libpq-fe.h... no
Can't find the 'libpq-fe.h header
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
I can install pg standalone with: gem install pg -- --with-pg-config=/usr/pgsql-9.4/bin/pg_config and the issue is resolved.
So I added a capistrano taskto create a ./bundle/config for the deploy with the build.pg key set with the path to pg_config on my VPS. In the Capistrano config/deploy.rb this is invoked before bundler:install.
desc "Create bundle config"
task :prepare_bundle_config do
on roles(:app) do
within release_path do
execute :bundle, 'config build.pg --with-pg-config=/usr/pgsql-9.4/bin/pg_config --local'
end
end
end
I have the necessary packages installed:
postgresql94-server.x86_64
postgresql94-devel.x86_64
postgresql94-libs.x86_64
libpqxx.x86_64
libpqxx-devel.x86_64
Here are the capistrano* gems I have installed
bundle list | grep capistrano
* capistrano (3.3.5)
* capistrano-bundler (1.1.4)
* capistrano-rails (1.1.2)
* capistrano-rbenv (2.0.3)
* capistrano-stats (1.1.1)
What am I missing here to successfully install pg with bundler? Please leave a comment if you need any additional information and I will update this post.

The postgres binaries are not in the path. Symlink them in to a directory in your path and you should be good: ln -s /usr/pgsql-9.4/bin/p* /usr/local/bin.
Did you build postgres or install it from yum?

Just posting the solution for PostgreSQL 11. If someone lands here.
sudo yum install epel-release
sudo yum install postgresql11-llvmjit
sudo yum install postgresql11-devel postgresql11-libs
Then run
gem install pg -v '1.2.3' -- --with-pg-config=/usr/pgsql-11/bin/pg_config
Thats it

I find that if I compile pgsql with source code, and PATH ENV not configed with pgsql/bin, this happends. You can have a try with this.

Alternatively, if you're using a Mac
brew link postgresql
Or in my case
brew link postgresql#12

Related

Where is libpq-fe.h on a Travis-CI instance?

I'm trying to build a postgres database adapter (luapgsql) as part of my setup:
install:
- sudo luarocks install --server=http://rocks.moonscript.org/dev luapgsql
But the build can't find libpq-fe.h:
Error: Could not find expected file libpq-fe.h, or libpq-fe.h for PQ --
you may have to install PQ in your system and/or pass PQ_DIR or
PQ_INCDIR to the luarocks command. Example: luarocks install luapgsql
PQ_DIR=/usr/local
I've tried what's suggested above, apt-get install libpq-dev and just find \ -name libpq-fe.h. No luck so far. Any ideas where it might be?
So it turns out that running pg_config as part of the install: was the answer. I could read the output in the log.
In the end, the line that worked for me for installing luapgsql on travis is:
sudo luarocks install --server=http://rocks.moonscript.org/dev luapgsql PQ_INCDIR=/usr/include/postgresql PQ_LIBDIR=/usr/lib/x86_64-linux-gnu

Error "the PGXS Makefile cannot be found" when installing PostGis on Debian

I am in the process of installing PostGis over psql on a Debian machine (actually crunchbang).
I have completed the following steps:
$ wget http://download.osgeo.org/postgis/source/postgis-2.0.3.tar.gz
$ tar xzf postgis-2.0.3.tar.gz
$ cd postgis-2.0.3
$ ./configure
On the final step I get the following error:
configure: error: the PGXS Makefile /usr/lib/postgresql/9.1/lib/pgxs/src/makefiles/pgxs.mk cannot be found. Please install the PostgreSQL server development packages and re-run configure.
The issue is that I do already have Postgres installed:
$ psql --version
psql (9.1.9)
I have checked this on two machines with the same configuration and get the same error. What am I missing here?
PostgreSQL is broken down into several packages, and having psql installed doesn't imply that the development packages are also installed.
According to the error message:
Please install the PostgreSQL server development packages and re-run
configure
you need:
# apt-get install postgresql-server-dev-9.1
Also note there's a APT pgdg repository providing recent pre-compiled versions of postgres-related packages (including postgis) that you may use instead of self-compiling.
If your system is set up to use this repository, just do:
# apt-get install postgresql-9.1-postgis-2.0
Daniel's answer works great except that it needs the following update:
$ sudo apt-get install postgresql-9.1-postgis-2.1
These packages can be updated some time in future again. So, it is recommended to search for new packages using aptitude and install the appropriate one:
$ aptitude search postgis

Bundle install ignores pg gem

When I type, "gem install pg", I get a message that the gem is installed along with the documenation.
But when I put "gem 'pg'" in the gemfile, and type "bundle install", it says that the bundle is complete. However if I type "bundle show pg", it says that it cannot find 'pg' in the current bundle. Accordingly, a command like "rake db:create:all", gives back, "no such file to load -- pg"
I am running on Ubuntu 11.04, Rails 3.0.11 and ruby 1.9.2.
Chris
I managed to fix this by deleting my Gemfile.lock and then running bundle install again. I am not sure why this works.
How I solved this problem:
I found the string in Gemfile.lock, in "GEM" section:
pg (0.15.1-x86-mingw32)
But I work on x64 OS (Windows 7 64), and "gem list" shows me "pg" gem as:
pg (0.15.1 x64-mingw32)
So, I replaced the string in Gemfile.lock to:
pg (0.15.1-x64-mingw32)
And my project works!
On Linux, I had to install these two devel libraries
sudo apt-get install postgresql
sudo apt-get install pgadmin3
bundle install
thats worked for me :)

Rails 3.1 - Pushing to Heroku - Errors installing postgres adapter?

I just upgraded to Rails 3.1 and the first app i've tried to deploy to Heroku has encountered a problem relating to Postgres adapter. I'm able to push the app to heroku but then when i try to migrate the database i get the following error:
heroku rake db:migrate
rake aborted!
Please install the postgresql adapter: `gem install activerecord-postgresql-adapter`
(pg is not part of the bundle. Add it to Gemfile.)
Tasks: TOP => db:migrate => db:load_config
(See full trace by running task with --trace)
when I try their suggested install i get:
ERROR: Could not find a valid gem 'activerecord-postgresql-adapter' (>= 0) in any repository
ERROR: Possible alternatives: activerecord-postgis-adapter, activerecord-jdbcpostgresql-adapter, activerecord-postgresql-cursors, activerecord-jdbcmysql-adapter, activerecord-jdbcmssql-adapter
which already seems weird... so what exact gem should I install to get this thing working if not what they say I should install??
When I try installing gem pg i get:
Building native extensions. This could take a while...
ERROR: Error installing pg:
ERROR: Failed to build gem native extension.
/Users/jerometufte/.rvm/rubies/ruby-1.9.2-p180/bin/ruby extconf.rb
checking for pg_config... no
No pg_config... trying anyway. If building fails, please try again with
--with-pg-config=/path/to/pg_config
checking for libpq-fe.h... no
Can't find the 'libpq-fe.h header
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.
Provided configuration options:
--with-opt-dir
...
I'm using SQLite3 currently. Any help greatly appreciated, this is baffling me.
Option 1:
Add pg to your Gemfile but skip trying to install it locally.
$ cat Gemfile
...
group :production do
# gems specifically for Heroku go here
gem "pg"
end
# Skip attempting to install the pg gem
$ bundle install --without production
Option 2 (Debian/Ubuntu):
Add pg to your Gemfile but first install the prerequisites.
$ cat Gemfile
...
group :production do
# gems specifically for Heroku go here
gem "pg"
end
# Install the pg gem's dependencies first
$ sudo apt-get install libpq-dev
# Then install the pg gem along with all the other gems
$ bundle install
You definitely need pg in the Gemfile for Heroku.
About the error you're getting locally: make sure you have postgres installed, run gem install pq -- --with-pg-config=[path to wherever your pg-config binary is], then bundle install.
Alternatively, if your local database is working fine (either because you're using sqlite or postgres-pr), you could put the gem 'pg' line in your Gemfile in a group called production, then bundle install --without production locally.
More up-to-date info: It had something to do with a different version of pg gem locally.
I already had pg in a production group (I run sqllite locally), but Heroku was still puking.
The problem went away for my new Rails 3.1 app when I:
rm Gemfile.lock
touch Gemfile
bundle install
git add .
git commit -am "wiped Gemfile.lock re-ran bundle install"
git push heroku master
worked like a charm when I then ran heroku run rake db:migrate

Having trouble installing the PG gem

I'm trying this, as the docs say:
gem install pg --with-pg-config=/opt/local/lib/postgresql90/bin/pg_config
ERROR: While executing gem ... (OptionParser::InvalidOption)
But, that's obviously not working. Can anyone spot an error?
The example that you're linking to says this:
gem install -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config
#-----------^^
Note the -- in there that you're not using. I suspect that gem is trying to parse the --with-pg-config as an option to gem rather than an option to the gem itself. Just a plain -- in an option list means "stop parsing options here" so try one of these:
gem install -- pg --with-pg-config=/opt/local/lib/postgresql90/bin/pg_config
gem install pg -- --with-pg-config=/opt/local/lib/postgresql90/bin/pg_config
One of those should keep gem from trying to interpret --with-pg-config as a gem option and get it down to the pg gem itself.
Not sure if the other answer works, but I thought I'd point out that the instructions here did work if you're using bundler to manage gems:
http://devblog.vworkapp.com/post/403869225/install-pg-gem-via-bundler-on-osx-snow-leopard
install postgres from Mac Ports
sudo port install postgres84
Include the postgres binaries in the PATH environment variable
export PATH=/opt/local/lib/postgresql84/bin:${PATH}
Then run bundle install with the all-important arch flag
env ARCHFLAGS="-arch x86_64" bundle install
Caveats: Your ARCHFLAGS may be something like i386 and not x86_64, depending on your local environment (and these instructions are obviously installing an older postgres -- I did sudo port install postgresql90).