OS X 10.6 に「sqlite3-ruby」gem (または「sqlite3」gem) をインストールしようとしています。私は ruby-1.9.2 を使用していますが、現在次のようになっています。
$ sqlite3 --version
3.7.4
$ sudo gem install sqlite3
Building native extensions. This could take a while...
ERROR: Error installing sqlite3-ruby:
ERROR: Failed to build gem native extension.
/Users/folken/.rvm/rubies/ruby-1.9.2-head/bin/ruby extconf.rb
checking for sqlite3.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/folken/.rvm/rubies/ruby-1.9.2-head/bin/ruby
--with-sqlite3-dir
--without-sqlite3-dir
--with-sqlite3-include
--without-sqlite3-include=${sqlite3-dir}/include
--with-sqlite3-lib
--without-sqlite3-lib=${sqlite3-dir}/lib
/Users/folken/.rvm/rubies/ruby-1.9.2-head/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/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:452:in `try_cpp'
from /Users/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:853:in `block in find_header'
from /Users/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:693:in `block in checking_for'
from /Users/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:280:in `block (2 levels) in postpone'
from /Users/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:254:in `open'
from /Users/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:280:in `block in postpone'
from /Users/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:254:in `open'
from /Users/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:276:in `postpone'
from /Users/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for'
from /Users/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:852:in `find_header'
from extconf.rb:28:in `<main>'
Gem files will remain installed in /Users/folken/.rvm/gems/ruby-1.9.2-head/gems/sqlite3-1.3.3 for inspection.
以下は which & whereis の結果で、sqlite3.h は /opt/local/include にあります。
$ which sqlite3
/opt/local/bin/sqlite3
$ whereis sqlite3
/usr/bin/sqlite3
私も次のものを渡そうとしました：
sudo gem install sqlite3 -- --with-sqlite3-include /opt/local/include --with-sqlite3-lib /opt/local/lib
sudo gem install sqlite3 -- --with-sqlite3-dir /opt/local/bin
その結果、次のようになります。
ERROR: Error installing sqlite3-ruby:
ERROR: Failed to build gem native extension.
/Users/folken/.rvm/rubies/ruby-1.9.2-head/bin/ruby extconf.rb --with-sqlite3-dir /usr/bin/sqlite3
*** 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/folken/.rvm/rubies/ruby-1.9.2-head/bin/ruby
--with-sqlite3-dir
/Users/folken/.rvm/rubies/ruby-1.9.2-head/lib/ruby/1.9.1/mkmf.rb:1336:in `dir_config': undefined method `split' for true:TrueClass (NoMethodError)
from extconf.rb:9:in `<main>'
また、/Users/folken/.rvm/gems/ruby-1.9.2-head/gems の下: sqlite-ruby-2.2.3 sqlite3-1.3.3
RVM では ruby-1.8.7 を使用しており、sqlite3 gem は問題なくロードされますが、何度もグーグル検索を行った後、自分に合った解決策が見つかりませんでした。どんな助けも大歓迎です (たとえそれが手動でのインストールや機能するためのハッキングを伴う場合でも)。