[Ruby On Rails] pg Gem 설치 오류 해결하기

[Ruby On Rails] pg Gem 설치 오류 해결하기

Mac OS X 환경으로 설명하겠습니다.

$ gem install pg

Fetching: pg-1.0.0.gem (100%)

ERROR:  While executing gem ... (Errno::EACCES)

    Permission denied @ rb_sysopen - /Users/Chipmunk/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/pg-1.0.0/.gemtest

Permission 접근이 금지되었다고 나옵니다. sudo 로 권한을 줘 봅시다.

$ sudo gem install pg

Password:

Building native extensions.  This could take a while...

ERROR:  Error installing pg:

ERROR: Failed to build gem native extension.

    current directory: /Users/Chipmunk/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/pg-1.0.0/ext

/Users/Chipmunk/.rbenv/versions/2.4.0/bin/ruby -r ./siteconf20180521-5009-tgjz9b.rb 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=/Users/Chipmunk/.rbenv/versions/2.4.0/bin/$(RUBY_BASE_NAME)

--with-pg

--without-pg

--enable-windows-cross

--disable-windows-cross

--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

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

  /Users/Chipmunk/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/extensions/x86_64-darwin-17/2.4.0-static/pg-1.0.0/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/Chipmunk/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/pg-1.0.0 for inspection.

Results logged to /Users/Chipmunk/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/extensions/x86_64-darwin-17/2.4.0-static/pg-1.0.0/gem_make.out

또 알 수 없는 이유로 pg 젬 인스톨에 실패합니다!

pg_config 를 찾을 수 없고, libpq-fe.h 헤더도 찾을 수 없다고 나옵니다.

이를 해결하기 위해서는 다음의 방법이 있습니다.

Mac OS 내에서 'postgresql' 을 설치해줘야 합니다.

postgresql 을 설치하기 위해서, 맥 패키지 매니저인 HomeBrew 를 설치해야 합니다.

터미널에 아래 코드를 쳐 주세요.

$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

그런 다음 postgresql 을 인스톨합시다!

$ brew install postgresql

==> Downloading https://homebrew.bintray.com/bottles/postgresql-10.4.high_sierra

Already downloaded: /Users/Chipmunk/Library/Caches/Homebrew/postgresql-10.4.high_sierra.bottle.tar.gz

==> Pouring postgresql-10.4.high_sierra.bottle.tar.gz

==> Caveats

To migrate existing data from a previous major version of PostgreSQL run:

  brew postgresql-upgrade-database

To have launchd start postgresql now and restart at login:

  brew services start postgresql

Or, if you don't want/need a background service you can just run:

  pg_ctl -D /usr/local/var/postgres start

==> Summary

🍺  /usr/local/Cellar/postgresql/10.4: 3,389 files, 39.2MB

그런 다음 다시 관리자 권한을 줘서 bundle install 해봅시다!

$ sudo bundle install

Fetching pg 1.0.0

Installing pg 1.0.0 with native extensions

Bundle complete! 19 Gemfile dependencies, 82 gems now installed.

Use `bundle info [gemname]` to see where a bundled gem is installed.

혹 그럼에도 설치가 안되신다면, 다음의 문서를 참고해 주시길 바랍니다.

$ sudo ARCHFLAGS="-arch x86_64" gem install pg