尝试安装 pg gem 时找不到“libpq-fe.h"标头 [英] Can't find the 'libpq-fe.h header when trying to install pg gem

问题描述

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:

I am using the Ruby on Rails 3.1 pre version. I like to use PostgreSQL, but the problem is installing the pg gem. It gives me the following error:

$ 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

我该如何解决这个问题?

How do I solve this problem?

推荐答案

看起来在 Ubuntu 中，标头是 libpq-dev 包(至少在以下 Ubuntu 版本中:11.04 (Natty Narwhal), 10.04 (Lucid Lynx), 11.10 (Oneiric Ocelot)，12.04(精确穿山甲)，14.04 (Trusty Tahr) 和 18.04(仿生海狸)):

It looks like in Ubuntu that header is part of the libpq-dev package (at least in the following Ubuntu versions: 11.04 (Natty Narwhal), 10.04 (Lucid Lynx), 11.10 (Oneiric Ocelot), 12.04 (Precise Pangolin), 14.04 (Trusty Tahr) and 18.04 (Bionic Beaver)):

...
/usr/include/postgresql/libpq-fe.h
...

因此，请尝试为您的操作系统安装 libpq-dev 或其等效物:

So try installing libpq-dev or its equivalent for your OS:

• 对于 Ubuntu/Debian 系统:sudo apt-get install libpq-dev
• 在 Red Hat Linux (RHEL) 系统上:yum install postgresql-devel
• 对于 Mac Homebrew:brew install postgresql
• 对于 Mac MacPorts PostgreSQL:gem install pg -- --with-pg-config=/opt/local/lib/postgresql[版本号]/bin/pg_config
• 对于 OpenSuse:zypper in postgresql-devel
• 对于ArchLinux:pacman -S postgresql-libs

• For Ubuntu/Debian systems: sudo apt-get install libpq-dev
• On Red Hat Linux (RHEL) systems: yum install postgresql-devel
• For Mac Homebrew: brew install postgresql
• For Mac MacPorts PostgreSQL: gem install pg -- --with-pg-config=/opt/local/lib/postgresql[version number]/bin/pg_config
• For OpenSuse: zypper in postgresql-devel
• For ArchLinux: pacman -S postgresql-libs

这篇关于尝试安装 pg gem 时找不到“libpq-fe.h"标头的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！