| How to prepare an Ubuntu machine for GTK-2-less test run. |
| |
| The test DemandGTK2.sh should work well without GTK-2 switching to version 3 |
| if there's no GTK-2 library available. |
| At the moment, it's not easy to find a system with GTK-3 and without GTK-2: |
| many programs still depend on version 2. |
| We can, however, rename GTK-2 library for a single test run and then restore |
| it back. |
| |
| (1) Find GTK2 library: run |
| /sbin/ldconfig -v 2>/dev/null | grep libgtk-x11-2 |
| |
| It will output one or two lines like |
| libgtk-x11-2.0.so.0 -> libgtk-x11-2.0.so.0.2400.23 |
| Search for the target of that symlink for instance with locate: |
| locate libgtk-x11-2.0.so.0.2400.23 |
| Finally, you'll find the libraries. On my current machine they are |
| /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0.2400.23 |
| /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.23 |
| |
| I'm running 64-bit JDK and need to tamper with x86_64 copy only. |
| |
| (2) Find running programs depending on this library. They probably would crash |
| if you rename it. Stop them for this test run. |
| That said, I'm afraid it would be impossible to do on a system older than Ubuntu 16.04. |
| On my Ubuntu 16.04 I have only hud-service using this library, and that's OK, it will restart |
| after a crash, if any. |
| To find these programs, run |
| lsof /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.23 |
| |
| (3) Now, |
| sudo mv /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.23 /usr/lib/x86_64-linux-gnu/bak.libgtk-x11-2.0.so.0.2400.23 |
| jtreg DemandGTK2.sh |
| sudo mv /usr/lib/x86_64-linux-gnu/bak.libgtk-x11-2.0.so.0.2400.23 /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.23 |
| |
| Needless to say, you should substitute your own library path and however you run jtreg. |
