FastDXT Setup (Linux) - CESNET/UltraGrid GitHub Wiki
You need to have GL-devel, g++ installed:
# as root
yum install gcc-c++ # Fedora, CentOS
yum install mesa-libGL-devel # Fedora, CentOS
apt-get install g++ # Debian, Ubuntu
apt-get install libgl1-mesa-dev # Debian, Ubuntu
zypper install gcc-c++ # openSUSE
zypper install Mesa-devel # OoenSUSE
Enter the FastDXT directory and compile it:
cd FastDXT/
make
The feature will be automatically recognized by UltraGrid. You may proceed with the UltraGrid setup.