【问题标题】:Can't install postgresql gem on mac无法在 mac 上安装 postgresql gem
【发布时间】:2014-03-05 09:58:02
【问题描述】:

我将在 Heroku 上部署我的应用程序,但希望在 SQLite 上进行本地开发。这是我添加到我的 Gemfile 中的代码。

group :development, :test do
    gem 'sqlite3'
end

group :production do
    gem 'postgresql'
end

当我进行捆绑安装时,这是我得到的错误。

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

    /Users/Fulcrum/.rbenv/versions/2.1.0/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
    --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/Fulcrum/.rbenv/versions/2.1.0/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

extconf failed, exit code 1

Gem files will remain installed in /Users/Fulcrum/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/pg-0.17.1 for inspection.
Results logged to /Users/Fulcrum/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/extensions/x86_64-darwin-13/2.1.0-static/pg-0.17.1/gem_make.out

An error occurred while installing pg (0.17.1), and Bundler cannot continue.
Make sure that `gem install pg -v '0.17.1'` succeeds before bundling.

【问题讨论】:

  • 在日志checking for pg_config... no 中查看答案为please try again with --with-pg-config=/path/to/pg_config 并使用pg 而不是postgresql
  • @Monk_Code 你的意思是我必须在我的本地机器上安装 pg 才能运行命令吗?
  • 你有brew吗?和postgresql?
  • 我有自制软件,但没有安装 postgresql。重点是在 SqlLite 中进行本地开发。由于 Heroku 不支持 pg 以外的任何东西,我必须将其用于生产。
  • 好的,试试bundle install --without production

标签: ruby-on-rails ruby heroku gem


【解决方案1】:

尝试捆绑安装而不进行生产:

bundle install --without production

【讨论】:

    【解决方案2】:

    安装缺少的libpq-dev。

    brew install libpq-dev

    然后进行捆绑安装,这应该可以解决您的问题。

    【讨论】:

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