安装pg gem时找不到'libpq-fe.h头文件

我使用的是Ruby on Rails 3.1预版本。我喜欢使用PostgreSQL，但问题是安装pg gem。它给了我以下错误:

$ gem install pg
Building native extensions.  This could take a while...
ERROR:  Error installing pg:
    ERROR: Failed to build gem native extension.

        /home/u/.rvm/rubies/ruby-1.9.2-p0/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=/home/u/.rvm/rubies/ruby-1.9.2-p0/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 /home/u/.rvm/gems/ruby-1.9.2-p0/gems/pg-0.11.0 for inspection.
    Results logged to /home/u/.rvm/gems/ruby-1.9.2-p0/gems/pg-0.11.0/ext/gem_make.out

我怎么解决这个问题?

当前回答

Ubuntu 20.04.1 LTS，这似乎对我有用:

sudo apt-get install ruby ruby-dev libpqxx-dev libpq-fe-dev libpq-dev 
sudo gem install pg -- --with-pg-config=/usr/include/postgresql/pg_config --with-pg-include=/usr/include/postgresql/

2020-08-28 04:40:35

其他回答

在OS X和MacPorts上，PostgreSQL不再需要-devel包。安装pg gem的步骤如下:

~ > sudo port install postgresql-devel
...
Error: postgresql-devel has been replaced by postgresql91; please install that port instead
~ > gem install pg -v '0.17.1' -- --with-pg-config=/opt/local/lib/postgresql95/bin/pg_config

参见这篇文章。

2015-08-29 09:39:37

对于Mac OS X，只需安装https://postgresapp.com/，并遵循命令行部分和ruby的步骤

sudo mkdir -p /etc/paths.d &&
echo /Applications/Postgres.app/Contents/Versions/latest/bin | sudo tee /etc/paths.d/postgresapp

然后

sudo ARCHFLAGS="-arch x86_64" gem install pg

2018-04-24 18:00:13

我在运行Postgres。应用程序，我必须这么做

export PATH=$PATH:/Applications/Postgres.app/Contents/Versions/9.4/bin

第一。然后

bundle install

为我工作。

2015-02-17 14:16:11

我通过安装postgresql-common包解决了这个问题。这个包提供了pg_config二进制文件，这很可能是您所缺少的。

2013-01-07 17:19:08

在Mac OS X上运行如下:

gem install pg -- --with-pg-config=***/path/to/pg_config***

***/path/to/pg_config***是pg_config的路径

2014-01-08 09:36:16

安装pg gem时找不到'libpq-fe.h头文件

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