gd is a graphics library. It allows your code to quickly draw images complete with lines, arcs, text, multiple colors, cut and paste from other images, and flood fills, and write out the result as a PNG or JPEG file. This is particularly useful in World Wide Web applications, where PNG and JPEG are two of the formats accepted for inline images by most browsers.
Note: This driver has been deprecated in favour of more modern library like libcairo and libpango. See the relevant Wiki pages for these.
Instructions for Mac OS X
Instructions for Linux
Instructions for Windows
- Download gd 2.34 library as zip
- Unzip gd-latest-win32.zip into a folder of your choice
Set CMake paths
- set environment variables (for MinGW and Visual C++) and add bin directory to PATH
set LIBGDDIR=c:\libraries\libgd set PATH=%LIBGDDIR%\bin;%PATH% set CMAKE_INCLUDE_PATH=%LIBGDDIR%\include;%CMAKE_INCLUDE_PATH% set CMAKE_LIBRARY_PATH=%LIBGDDIR%\lib;%CMAKE_LIBRARY_PATH%
CMake is now able to find the libgd library and headers.