This project provides a Dockerfile and RPM spec file to build GDAL from source with Brunsli compression support.

This project simplifies the process of building GDAL with Brunsli support by:

• Dockerized Build: Using a Docker image to provide a consistent and isolated build environment.
• RPM Packaging: Creating an RPM package for distribution and installation on RPM-based systems.
• Brunsli Integration: Including the necessary steps to build and integrate Brunsli into the GDAL build process.

• Docker: Make sure you have Docker installed and running on your system.
• Git: Git is required to clone the Brunsli source code.

The easiest way to build the GDAL Docker image with Brunsli support is to use the provided build script:

./build_gibs-gdal_image.sh

This script:

• Sources image name and version information from version.sh
• Detects CPU architecture and adds platform options if needed
• Passes version variables to the Docker build process
• Builds the Docker image using docker/Dockerfile

After building the Docker image, you can extract the RPM files using the provided script:

./extract_rpm.sh

This script:

• Creates a temporary container from the built image
• Copies the RPM files from the container to a local ./dist/${RPM_VERSION} directory, where ${RPM_VERSION} is automatically set based on the version information in version.sh.
• Removes the temporary container

sudo dnf install ./path/to/gdal-${RPM_VERSION}.x86_64.rpm

Run gdalinfo --version

gdal_translate -of JPEG2000 -co QUALITY=50 input.tif output.jp2 #Brunsli Support
Compare the file size of output.jp2 with a JPEG2000 file generated without Brunsli. The Brunsli-compressed file should be 22% smaller.

• Version Information: Edit the version.sh file to change the GDAL version, release number, or AlmaLinux version.
• Dependencies: Adjust the dnf install commands in the Dockerfile to install any additional dependencies required for your specific needs.
• CMake Options: Modify the CMake options in the %build section of the gdal.spec file to customize the GDAL build.
• Output Directory: The extracted RPMs will be placed in ./dist/${RPM_VERSION} by default.

*This project is licensed under the Apache License, Version 2.0 - see the LICENSE  file for details