Forum: Ruby on Rails Problem with installing gems

Ae3452a40e1c5960c935cfb9ec9ad221?d=identicon&s=25 Elton Yau (Guest)
on 2014-03-15 09:20
(Received via mailing list)
Hey Guys, so i recently started playing around with ROR, however
whenever i
try to install gems i get this message

ERROR:  Error installing pg:
ERROR: Failed to build gem native extension.

        /Applications/rubystack-1.9.3-22/ruby/bin/ruby extconf.rb
checking for pg_config... yes
Using config values from
/Applications/rubystack-1.9.3-22/postgresql/bin/pg_config
*** 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=/Applications/rubystack-1.9.3-22/ruby/bin/ruby
--with-pg
--without-pg
--with-pg-config
--without-pg-config
--with-pg_config
--without-pg_config
--with-pg-dir
--without-pg-dir
--with-pg-include
--without-pg-include=${pg-dir}/include
--with-pg-lib
--without-pg-lib=${pg-dir}/lib
/Applications/rubystack-1.9.3-22/ruby/lib/ruby/1.9.1/mkmf.rb:381:in
`try_do': The compiler failed to generate an executable file.
(RuntimeError)
You have to install development tools first.
from /Applications/rubystack-1.9.3-22/ruby/lib/ruby/1.9.1/mkmf.rb:461:in
`try_link0'
from /Applications/rubystack-1.9.3-22/ruby/lib/ruby/1.9.1/mkmf.rb:476:in
`try_link'
from extconf.rb:39:in `<main>'


Gem files will remain installed in
/Applications/rubystack-1.9.3-22/ruby/lib/ruby/gems/1.9.1/gems/pg-0.17.1
for inspection.
Results logged to
/Applications/rubystack-1.9.3-22/ruby/lib/ruby/gems/1.9.1/gems/pg-0.17.1/ext/gem_make.out

I dont really get whats happening ...

Thanks !

Elton
81b61875e41eaa58887543635d556fca?d=identicon&s=25 Frederick Cheung (Guest)
on 2014-03-15 14:09
(Received via mailing list)
On Saturday, March 15, 2014 6:35:18 AM UTC, Elton Yau wrote:
> Using config values from
/Applications/rubystack-1.9.3-22/postgresql/bin/pg_config
>
>



You need development tools installed (c compiler etc). Assuming you're
on OS X this means installing Xcode and from within Xcode installing the
command line tools (on mavericks you run xcode-select --install )

Fred.
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