Question

pg gem很顽固，所以我无法在新电脑上加载我的应用程序。似乎有多个问题，无法找到pg_config，然后是extconf.rb

#psql working...
psql (9.2.1)
Type "help" for help.

nd =>
\q

$ pg_config:

#adding the path to bashrc...
$ nano .bashrc

PATH=/usr/pgsql-9.2/bin:$PATH

#seems to work...
pg_config: /usr/pgsql-9.2/bin/pg_config

$ sudo gem install pg

#but i get the same errors...
Building native extensions.  This could take a while...
.......
ERROR:  Error installing pg:
        ERROR: Failed to build gem native extension.

        /usr/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.

那些处理过这个问题的linux人员？

Answer 1

用

解决了这个问题

$ yum install /usr/include/libpq-fe.h

Answer 2

对于Fedora 20+，需要以下软件包：

sudo yum install postgresql-devel

Answer 3

〜嗨

我在我的Rails项目中安装gem“pg”时遇到了同样的问题，当运行命令“bundle install”有同样的错误时，在我的情况下，partiuclar解决它如下：

我使用Fedora 19，我想它可以在Fedora 17中以相同的方式解决：

我使用以下教程安装了Postgres：

http://goo.gl/AhZZKR

然后，我在〜/ .bashrc中添加了下一行来解决pg_config的问题：

PATH = / usr/pgsql-9.2/bin: $ PATH

最后用libpq-fe.h来解决问题，我按如下方式安装了postgresql-devel：

# yum install postgresql92-devel

最后在我的Rails项目中运行了“bundle install”命令而不再出现错误。

Answer 4

浅顶软呢帽30：

$sudo dnf install libpq-devel

然后：

$gem install pg

Building native extensions. This could take a while...
Successfully installed pg-1.1.4
Parsing documentation for pg-1.1.4
Installing ri documentation for pg-1.1.4
Done installing documentation for pg after 1 seconds
1 gem installed

无法在Fedora 17上安装PG gem

4 个答案: