Ruby-on-rails 使用“gem pq”安装 PostgreSQL gem 失败并显示错误：无法构建 gem 本机扩展
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Installing the PostgreSQL gem with 'gem pq' fails with ERROR: Failed to build gem native extension
提问by Tushar Khatiwada
I am learning Ruby on Rails and trying to develop an application.
In my application I am trying to use the default SQLite database in the Development Modeand PostgreSQL in the Production Mode.
But I'm getting the following error while trying to install pg gem using: gem install pg
我正在学习 Ruby on Rails 并尝试开发一个应用程序。在我的应用我试图使用默认的开发模式SQLite数据库和PostgreSQL的在生产模式。但是在尝试使用以下方法安装 pg gem 时出现以下错误：gem install pg
Building?native?extensions.??This?could?take?a?while...
ERROR:??Error?installing?pg:
????????ERROR:?Failed?to?build?gem?native?extension.
?
????/home/tusharkhatiwada/.rvm/rubies/ruby-2.0.0-p247/bin/ruby?extconf.rb
checking?for?pg_config...?yes
Using?config?values?from?/usr/bin/pg_config
You?need?to?install?postgresql-server-dev-X.Y?for?building?a?server-side?extension?or?libpq-dev
?for?building?a?client-side?application.
You?need?to?install?postgresql-server-dev-X.Y?for?building?a?server-side?extension?or?libpq-dev
?for?building?a?client-side?application.
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/tusharkhatiwada/.rvm/rubies/ruby-2.0.0-p247/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}/
?
?
Gem?files?will?remain?installed?in?/home/tusharkhatiwada/.rvm/gems/[email protected]/g
ems/pg-0.17.0?for?inspection.
Results?logged?to?/home/tusharkhatiwada/.rvm/gems/[email protected]/gems/pg-0.17.0/ext
/gem_make.out
After that I again tried with gem install pg -- --with-pg-config= '/usr/bin/pg_config'and the following error is displayed:
之后我再次尝试gem install pg -- --with-pg-config= '/usr/bin/pg_config'并显示以下错误：
Building?native?extensions?with:?'--with-pg-config=?/usr/bin/pg_config'
This?could?take?a?while...
ERROR:??Error?installing?pg:
????????ERROR:?Failed?to?build?gem?native?extension.
?
????/home/tusharkhatiwada/.rvm/rubies/ruby-2.0.0-p247/bin/ruby?extconf.rb?--with-pg-config=?/us
r/bin/pg_config
Using?config?values?from?
sh:?1:?:?Permission?denied
sh:?1:?:?Permission?denied
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/tusharkhatiwada/.rvm/rubies/ruby-2.0.0-p247/bin/ruby
????????--with-pg
????????--without-pg
????????--with-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}/
?
?
Gem?files?will?remain?installed?in?/home/tusharkhatiwada/.rvm/gems/[email protected]/g
ems/pg-0.17.0?for?inspection.
Results?logged?to?/home/tusharkhatiwada/.rvm/gems/[email protected]/gems/pg-0.17.0/ext
/gem_make.out
回答by santosh
If you are using Ubuntu try to install following lib file
如果您使用的是 Ubuntu，请尝试安装以下 lib 文件
sudo apt-get install libpq-dev
and then gem install pg
然后 gem install pg
worked for me.
对我来说有效。
回答by Haytham Mtair
for those who reached this by google search if libpq-dev didnt work or threw another errors i hade the same problem try upgrading your system and get the ruby div-kit
对于那些通过谷歌搜索达到这个的人，如果 libpq-dev 没有工作或抛出另一个错误，我遇到了同样的问题，请尝试升级您的系统并获取 ruby div-kit
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install ruby1.9.1-dev
then reboot after this just try again
然后在此之后重新启动再试一次
...
...
回答by Paritosh Piplewar
You have to do this
你必须这样做
sudo apt-get install libgmp-dev libpq-dev
and then
进而
gem install pg
