如何在linux上安装gd库（linuxgd库安装）

How to Install the GDLib on linux?

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The GDLib is an open source library for handling graphics, and is widely used in web development and programming. GDLib is especially useful for dynamically generated images, such as charts, graphs, and other images used on websites and dynamic web applications. This guide will show You how to install GDLib on Linux systems.

Before proceeding, you’ll need to make sure that you have the required software packages installed:

* An Apache or Nginx web server

* php

* php-gd

Once you have confirmed that you have all the prerequisites, you can proceed with the installation.

The first step is to install the GDLib library. It is available as a source package, or you can download pre-compiled binaries. For this guide, we’ll be downloading the source package. The latest version of GDLib can be downloaded from the GDLib website.

Once you have the source code, extract it and change into the GDLib directory. Now you can compile GDLib by running the following commands:

./configure --prefix=/path/to/install
make
make install

Once the installation is complete, you can verify that GDLib is installed correctly by running the /path/to/install/bin/gdlib-config command. If everything is installed correctly, you should see something like this:

gdlib version 2.2.4
GD linkage:
  directives: -lgd

Finally, you will need to configure Apache or Nginx to use GDLib. For Apache, open the httpd.conf file and add the following line:

LoadModule php7_module /usr/lib/apache2/modules/libphp7.so

For Nginx, open the nginx.conf file and add the following line:

load_module /usr/lib/nginx/modules/ngx_http_php7_module.so;

Once you save the changes, restart Apache or Nginx for the changes to take effect. Now you can check if GDLib is working correctly by creating a simple PHP file with the following code:

phpinfo();
?>

If GDLib is installed correctly, you should see an entry for “GD Version” in the output.

That’s it! With GDLib installed and configured, you can now create dynamic images with PHP. Have fun!

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