Re: [Rails] Unable to install pg gem file on CENT OS

You will need to install libyaml-devel from the epel repositories (which
you will also need to add).

On 05/12/12 08:49, Jordon Bedwell wrote:
> Install postgresql-libs and also recompile your Ruby after install libyaml.
>
> On Tue, Dec 4, 2012 at 6:50 AM, PavanKumar Chamarthi
> <pavankiumar546@gmail.com> wrote:
>> please help me in this... I am unable to install pg gem file
>>
>>
>> [root@vdimc04 ~]# gem install pg -v '0.12.0'
>> /usr/local/lib/ruby/1.9.1/yaml.rb:56:in `<top (required)>':
>> It seems your ruby installation is missing psych (for YAML output).
>> To eliminate this warning, please install libyaml and reinstall your ruby.
>> Fetching: rake-compiler-0.8.1.gem (100%)
>> Fetching: pg-0.12.0.gem (100%)
>> Building native extensions. This could take a while...
>> ERROR: Error installing pg:
>> ERROR: Failed to build gem native extension.
>>
>> /usr/local/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
>> --without-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/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
>> /usr/local/lib/ruby/gems/1.9.1/gems/pg-0.12.0 for inspection.
>> Results logged to
>> /usr/local/lib/ruby/gems/1.9.1/gems/pg-0.12.0/ext/gem_make.out
>>
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