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Asked: 2024-09-26T17:51:52+05:30 In: ,

I’m having trouble locating the appropriate command to install PGXS for PostgreSQL 14 on a CentOS system. Can anyone guide me on how to do this?

I’m having a bit of a rough time figuring out how to install PGXS for PostgreSQL 14 on my CentOS setup, and I could really use some help. I’ve been tinkering with my database for a while now, and I got motivated to dive into extending my PostgreSQL capabilities. After some research, I found out that PGXS (PostgreSQL Extension Building Infrastructure) would be super helpful for building and managing extensions, but I’m stuck on the installation part.

So, here’s the deal: I’ve got PostgreSQL 14 already up and running, but I can’t seem to find the right command or package to install PGXS. I’ve tried a few things on my own, like looking through the PostgreSQL docs and exploring some online forums, but nothing I’ve found seems to point me in the right direction. It’s turning into quite the puzzle, and I feel like I’m missing something really simple.

When I run the usual commands for installing software on CentOS, like `yum install` or `dnf install`, I don’t see any specific package that mentions PGXS. I did check that I have developer tools and the necessary libraries installed since I figured that would be crucial for compiling extensions. I’ve also made sure to have the PostgreSQL development package installed, but still no luck. I keep reading mentions of Makefiles and other configurations but can’t land on a concrete solution.

Has anyone been in this boat before? I’d really appreciate it if someone could break down the steps for me. Maybe point me to the correct package I need to install or provide the specific command that I should be using? I don’t mind rolling up my sleeves and getting my hands dirty with some configurations, but I’d like to start with a solid foundation. Any insights or tips would be super helpful—thanks a ton in advance!

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    2 Answers

    1. Installing PGXS for PostgreSQL 14 on CentOS

      It sounds like you’re really getting into extending your PostgreSQL capabilities! No worries, I can help you figure out how to get PGXS set up. Here’s a straightforward way to get it installed on your CentOS setup.

      1. Install PostgreSQL Development Package

      Since you mentioned that you’ve already got PostgreSQL 14 running, the next step is to make sure you have the development package installed. This package includes PGXS. You can install it using the following command:

      sudo yum install postgresql14-devel

      Just adjust the version number if you have a different version of PostgreSQL. This command should pull in PGXS along with the development tools.

      2. Check the PGXS Setup

      After that, verify that PGXS is available by checking the directory:

      ls /usr/pgsql-14/share/extension/

      You should see a bunch of `.control` files and the `Makefile` in there. If you see them, then PGXS is installed, and you’re good to go!

      3. Building Extensions

      When you want to build an extension using PGXS, navigate to your extension directory and create a Makefile. A simple one could look something like this:

      MODULES = your_extension_name
    PG_CONFIG = pg_config
    PGXS := $(shell $(PG_CONFIG) --pgxs)
    
    include $(PGXS)

      Then you can run:

      make
    sudo make install

      This should compile and install your extension!

      Troubleshooting

      If you run into any issues, double-check that you have the necessary developer tools installed. You can install the Development Tools group by running:

      sudo yum groupinstall "Development Tools"

      Hopefully, this helps you get PGXS up and running. Just take it one step at a time, and you’ll be extending PostgreSQL before you know it! Good luck!

    2. To install PGXS (PostgreSQL Extension Building Infrastructure) for PostgreSQL 14 on your CentOS setup, you need to ensure that you have the PostgreSQL development package installed, as PGXS is included with it. You mentioned that you have already installed the PostgreSQL development package, but just to clarify, you can install it using the following command:

      sudo dnf install postgresql14-devel

      This package includes the necessary headers and files required for building extensions, including the PGXS infrastructure. Once you have the development package installed, you should check for the PGXS makefiles, which are usually located in the `share/extension` directory of your PostgreSQL installation path (typically `/usr/pgsql-14/share/extension/`). You can then set your environment variable to include the PGXS path:

      export PGXS=/usr/pgsql-14/lib/pgxs/src/makefile

      After reaching this step, you should be able to compile your extensions using the `make` and `make install` commands from the directory where your extension source resides. If you encounter any errors along the way, ensure that you have the necessary development tools and libraries; you can do this by installing:

      sudo dnf groupinstall "Development Tools"

      This command ensures you have the compilers and other necessary tools. Once these configurations are set up, you should be well on your way to extending your PostgreSQL capabilities with PGXS. If you continue to face issues, examining the PostgreSQL logs and the output from your make commands will help identify any missing dependencies or specific errors that may arise.

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