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運行'bundle install'時'pg gem'安裝出錯

[英]Error with 'pg gem' installation when running 'bundle install'

我在運行'bundle install'時突然遇到這個問題。 一切似乎都正確安裝,但后來我遇到了'pg'的問題,正如許多其他人似乎做的那樣。 正如消息所說,我嘗試運行'gem install pg - '0.12.2'',但它仍然失敗。

我在Snow Leopard 10.6上,這是我得到的錯誤:

Installing pg (0.12.2) with native extensions 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /Users/thomaskim/.rvm/rubies/ruby-1.9.3-p327/bin/ruby 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
    --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/thomaskim/.rvm/rubies/ruby-1.9.3-p327/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


Gem files will remain installed in /Users/thomaskim/.bundler/tmp/1336/gems/pg-0.12.2 for inspection.
Results logged to /Users/thomaskim/.bundler/tmp/1336/gems/pg-0.12.2/ext/gem_make.out
An error occurred while installing pg (0.12.2), and Bundler cannot continue.
Make sure that `gem install pg -v '0.12.2'` succeeds before bundling.

首先,您需要確保安裝了命令行工具(Xcode包)。 既然您使用的是OSX的舊版本 - 您將不得不研究如何做到這一點。

比,使用自制安裝postgress

brew install postgres 

在那之后,一切都應該捆綁沒有問題。

您似乎沒有正確安裝postgres。 當我嘗試使用npm安裝pg模塊時,我遇到了類似的錯誤。 正確安裝postgres后它消失了。 這是下載鏈接: http//www.postgresql.org/download/macosx/

如果僅在開機模式下在計算機上運行rails並使用sql lite,則無需安裝生產包。

所以如果你的gemfile像這樣:

group :production do
  gem 'pg'
end

嘗試使用以下命令安裝軟件包:

gem install --without production

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