如何在Linux CentOS 7上安装luasql? [英] How to install luasql on Linux CentOS 7?

问题描述

我尝试使用以下命令在Linux CentOS 7计算机上安装 luasql .

I tried to install luasql on my Linux CentOS 7 computer with this command:

luarocks install luasql-postgres

但不幸的是，我遇到了以下错误:

but unfortunately I got the following error:

Installing https://raw.githubusercontent.com/rocks-moonscript-org/moonrocks-mirror/master/luasql-postgres-2.3.5-2.rockspec...
Using https://raw.githubusercontent.com/rocks-moonscript-org/moonrocks-mirror/master/luasql-postgres-2.3.5-2.rockspec... switching to 'build' mode

Error: Could not find header file for PGSQL
  No file libpq-fe.h in /usr/local/include
  No file libpq-fe.h in /usr/include
You may have to install PGSQL in your system and/or pass PGSQL_DIR or PGSQL_INCDIR to the luarocks command.
Example: luarocks install luasql-postgres PGSQL_DIR=/usr/local

然后我尝试运行最后一行luarocks install luasql-postgres PGSQL_DIR=/usr/local，但没有任何改善...

I tried then to run the last line luarocks install luasql-postgres PGSQL_DIR=/usr/local but I had no improvement...

我该怎么办?

推荐答案

Lua的代码很好.您得到的错误是C位不存在.

The Lua bits of this are fine; the error you're getting is that the C bits aren't there.

通常，在与C库连接时，需要确保已安装C库的-dev(对于Debianish)或-devel(对于Redhatish)软件包.

In general, when you are interfacing with a C library, you need to make sure you have the C library's -dev (for Debianish) or -devel (for Redhatish) package installed.

以您为例，您可以仅以root身份在盒子上执行以下操作:

In your case, you can probably just do the following as root on your box:

yum install postgresql-devel

...然后尝试再次安装您的羽绒服.

...and then attempt your luarocks install again.

或者，您可以尝试使用OS本机软件包:

Or, you could try the OS native package instead:

yum install lua-sql-postgresql

我个人更喜欢将OS软件包用于稳定的Lua库，它们不会发生太大变化，但这是您的要求...

I personally prefer using the OS packages for stable Lua libs that don't change much, but it's your call...

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