For Firefox 3/Gecko 1.9, the release team is planning on maintaining binary compatibility with the following Linux distributions:
See also, the Linux/Runtime Requirements
| Distro | libstdc++ | Gnome | GTK | ATK | pango | libXrender | |
|---|---|---|---|---|---|---|---|
| RHEL/ CentOS | 5.0 | libstdc++.so.5 and .6 | 2.16.0 | 2.10.4 | 1.12.2 | 1.14.9 | libXrender.so.1.3.0 |
| 5.1 | libstdc++.so.5 and .6 | 2.16.0 | 2.10.4 | 1.12.2 | 1.14.9 | libXrender.so.1.3.0 | |
| Fedora Core | 6 | libstdc++.so.6 | 2.16 | 2.10.4 | 1.12.1 | 1.14.0 | libXrender.so.1.3.0 |
| 7 | libstdc++.so.6 | 2.18.0 | 2.10.11 | 1.18.0 | 1.16.4 | libXrender.so.1.3.0 | |
| 8 | libstdc++.so.6 | 2.20.1 | 2.12.1 | 1.20.0 | 1.18.3 | libXrender.so.1.3.0 | |
| SUSE | 10.2 | libstdc++.so.6 | 2.16.1 | 2.10.6 | 1.12.3 | 1.14.5 | libXrender.so.1.3.0 |
| 10.3 | libstdc++.so.6 | 2.20.0 | 2.12.0 | 1.20.0 | 1.18.2 | libXrender.so.1.3.0 | |
| Ubuntu | 6.10 | libstdc++.so.5 and .6 | 2.16.1 | 2.10.6 | 1.12.3 | 1.14.5 | libXrender.so.1.3.0 |
| 7.04 | libstdc++.so.5 and .6 | 2.18.1 | 2.10.11 | 1.18.0 | 1.16.2 | libXrender.so.1.3.0 | |
| 7.10 | libstdc++.so.5 and .6 | 2.20.0 | 2.12.0 | 1.20.0 | 1.18.2 | libXrender.so.1.3.0 |