gem pg installer sur Mac OS Lion avec RVM

Question

212-178-13-214:~ igorfedoronchuk$ gem install pg Building native extensions. This could take a while... 
/Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/ext/builder.rb:48: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777 
ERROR: Error installing pg: 
    ERROR: Failed to build gem native extension. 

     /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/bin/ruby extconf.rb 
checking for pg_config... yes 
Using config values from /usr/bin/pg_config 
checking for libpq-fe.h... *** 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=/Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/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 
/Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:368:in `try_do': The complier failed to generate an executable file. (RuntimeError) 
You have to install development tools first. 
    from /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:452:in `try_cpp' 
    from /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:853:in `block in find_header' 
    from /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:693:in `block in checking_for' 
    from /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:280:in `block (2 levels) in postpone' 
    from /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:254:in `open' 
    from /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:280:in `block in postpone' 
    from /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:254:in `open' 
    from /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:276:in `postpone' 
    from /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for' 
    from /Users/igorfedoronchuk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/mkmf.rb:852:in `find_header' 
    from extconf.rb:36:in `<main>' 


Gem files will remain installed in /Users/igorfedoronchuk/.rvm/gems/ruby-1.9.2-p180@global/gems/pg-0.12.0 for inspection. 
Results logged to /Users/igorfedoronchuk/.rvm/gems/ruby-1.9.2-p180@global/gems/pg-0.12.0/ext/gem_make.out 

Postgres a été téléchargé et installé à partir http://www.postgresql.org/download/macosx/ (version 9.1)

Je tentais d'installer postgres Brew - aucun résultat.

Comment résoudre ce problème? Merci

Answer 1

Le message d'erreur ("Vous devez d'abord installer les outils de développement.") Dit tout. Installez d'abord Xcode, puis essayez d'installer le pg gem.

De même, vous n'avez pas besoin d'installer un PostgreSQL tiers sur Lion, car il est déjà inclus.

Answer 2

Je faisais la même question et voici où j'ai trouvé mon resolution

Hope this helps!