gem install pg --with-pg-config works, bundle fails

Question

WhenI run (as root)

gem install pg -v '0.12.0' -- --with-pg-config=/usr/pgsql-9.1/bin/pg_config 

I get the following output:

#-> gem instal pg -v '0.12.0' -- --with-pg-config=/usr/pgsql-9.1/bin/pg_config Building native extensions.  This could take a while... Successfully installed pg-0.12.0 1 gem installed Installing ri documentation for pg-0.12.0... Installing RDoc documentation for pg-0.12.0... #->  

When I run bundle install:

Installing pg (0.12.0) with native extensions  Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.      /usr/local/rvm/rubies/ruby-1.9.2-p290/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 --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/usr/local/rvm/rubies/ruby-1.9.2-p290/bin/ruby --with-pg --without-pg --with-pg-dir --without-pg-dir --with-pg-include --without-pg-include=${pg-dir}/include --with-pg-lib --without-pg-lib=${pg-dir}/lib --with-pg-config --without-pg-config --with-pg_config --without-pg_config   Gem files will remain installed in /var/www/simpletrac/vendor/cache/ruby/1.9.1/gems/pg-    0.12.0 for inspection. Results logged to /var/www/simpletrac/vendor/cache/ruby/1.9.1/gems/pg-0.12.0/ext/gem_make.out An error occured while installing pg (0.12.0), and Bundler cannot continue. Make sure that `gem install pg -v '0.12.0'` succeeds before bundling. 

I have libpq-fe.h installed at /usr/pgsql-9.1/include/libpq-fe.h. So, I tried

gem install pg -v '0.12.0' -- --with-pg-config=/usr/pgsql-9.1/bin/pg_config --with-pg-lib=/usr/pgsql-9.1/include/libpq-fe.h but still no go.  

Any help would be greatly appreciated.

Also, I have installed postgresql91-devel and ruby-devel. Running CentOS 6.

Answer 1

Have you tried running this before running bundle install?

bundle config build.pg --with-pg-config=/usr/pgsql-9.1/bin/pg_config 

See http://bundler.io/v1.3/bundle_config.html