mac で gem install sqlite3 しろといわれて実行してもエラーになる

mac (high sierra) で

gem "sqlite3"

を bundle install するとエラーに

```

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /Users/watashi/pj/myproject/vendor/bundle/ruby/2.3.0/gems/sqlite3-1.3.13/ext/sqlite3
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/ruby -r ./siteconf20180413-32008-z97bvq.rb extconf.rb
checking for sqlite3.h... yes
checking for pthread_create() in -lpthread... yes
checking for sqlite3_libversion_number() in -lsqlite3... no
sqlite3 is missing. Try 'brew install sqlite3',
'yum install sqlite-devel' or 'apt-get install libsqlite3-dev'
and check your shared library search path (the
location where your sqlite3 shared library is located).
*** 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=/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/$(RUBY_BASE_NAME)
	--with-sqlite3-config
	--without-sqlite3-config
	--with-pkg-config
	--without-pkg-config
	--with-sqlite3-dir
	--without-sqlite3-dir
	--with-sqlite3-include
	--without-sqlite3-include=${sqlite3-dir}/include
	--with-sqlite3-lib
	--without-sqlite3-lib=${sqlite3-dir}/lib
	--with-pthreadlib
	--without-pthreadlib
	--with-sqlite3lib
	--without-sqlite3lib

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /Users/watashi/pj/myproject/vendor/bundle/ruby/2.3.0/extensions/universal-darwin-17/2.3.0/sqlite3-1.3.13/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/watashi/pj/myproject/vendor/bundle/ruby/2.3.0/gems/sqlite3-1.3.13 for inspection.
Results logged to /Users/watashi/pj/myproject/vendor/bundle/ruby/2.3.0/extensions/universal-darwin-17/2.3.0/sqlite3-1.3.13/gem_make.out

An error occurred while installing sqlite3 (1.3.13), and Bundler cannot continue.
Make sure that `gem install sqlite3 -v '1.3.13'` succeeds before bundling.

In Gemfile:
  sqlite3
```

で、

```
$ sudo gem install sqlite3 -v '1.3.13'
Password:
Fetching: sqlite3-1.3.13.gem (100%)
Building native extensions.  This could take a while...
ERROR:  Error installing sqlite3:
	ERROR: Failed to build gem native extension.

    current directory: /Library/Ruby/Gems/2.3.0/gems/sqlite3-1.3.13/ext/sqlite3
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/ruby -r ./siteconf20180413-32755-frso0w.rb extconf.rb
checking for sqlite3.h... yes
checking for pthread_create() in -lpthread... yes
checking for sqlite3_libversion_number() in -lsqlite3... no
sqlite3 is missing. Try 'brew install sqlite3',
'yum install sqlite-devel' or 'apt-get install libsqlite3-dev'
and check your shared library search path (the
location where your sqlite3 shared library is located).
*** 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=/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/$(RUBY_BASE_NAME)
	--with-sqlite3-config
	--without-sqlite3-config
	--with-pkg-config
	--without-pkg-config
	--with-sqlite3-dir
	--without-sqlite3-dir
	--with-sqlite3-include
	--without-sqlite3-include=${sqlite3-dir}/include
	--with-sqlite3-lib
	--without-sqlite3-lib=${sqlite3-dir}/lib
	--with-pthreadlib
	--without-pthreadlib
	--with-sqlite3lib
	--without-sqlite3lib

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /Library/Ruby/Gems/2.3.0/extensions/universal-darwin-17/2.3.0/sqlite3-1.3.13/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Library/Ruby/Gems/2.3.0/gems/sqlite3-1.3.13 for inspection.
Results logged to /Library/Ruby/Gems/2.3.0/extensions/universal-darwin-17/2.3.0/sqlite3-1.3.13/gem_make.out
```

こうなる。:thinking-face:
こうした

```
$ sudo gem install sqlite3 -v '1.3.13' -- --with-sqlite3-lib=/usr/lib
Building native extensions with: '--with-sqlite3-lib=/usr/lib'
This could take a while...
Successfully installed sqlite3-1.3.13
Parsing documentation for sqlite3-1.3.13
Done installing documentation for sqlite3 after 0 seconds
1 gem installed
```

よっしゃ

で、bundler にも同じオプションわたす

```
$ bundle config build.sqlite3 --with-sqlite3-lib=/usr/lib
```

その後、

```
$ bundle install --path vendor/bundle

~ snip ~

Fetching sqlite3 1.3.13
Installing sqlite3 1.3.13 with native extensions
Bundle complete! 5 Gemfile dependencies, 28 gems now installed.
Bundled gems are installed into `./vendor/bundle`
```

勝利