Ruby on Rails

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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