Virtualbox 5.2.37 testbuild, Guest Additions Fail To Build Linux 5.5

[drankinatty]

Using testcase 5.2.37 (135942), while further attempting to troubleshoot https://www.virtualbox.org/ticket/19311, I managed to update the Archlinux guest to Linux 5.5 (host is Archlinux 5.5) (the update took several hours with a headless guest that usually takes 2 minutes)

After reboot, attempting to build the new guest additions, the build fails with:

    In file included from /tmp/vbox.0/vboxvideo_guest.h:32,
                    from /tmp/vbox.0/modesetting.c:27:
    /tmp/vbox.0/vbox_drv.h:101:10: fatal error: drm/drmP.h: No such file or directory
    101 | #include <drm/drmP.h>
        |          ^~~~~~~~~~~~
    compilation terminated.
    In file included from /tmp/vbox.0/hgsmi_base.c:27:
    /tmp/vbox.0/vbox_drv.h:101:10: fatal error: drm/drmP.h: No such file or directory
    101 | #include <drm/drmP.h>
        |          ^~~~~~~~~~~~
    compilation terminated.

[drankinatty]

vboxadd-setup.log

[Frank Batschulat (Oracle)]

you are trying a Virtualbox version 5.2.37 (135942), that does not support the 5.5 kernel. for more details see:

Ticket #19145 (closed defect: fixed) Opened 2 months ago Last modified 2 days ago linux: kernel 5.5-rc1/rc2 - we need changes -> fixed in 6.1.4 https://www.virtualbox.org/ticket/19145

[drankinatty]

Confirmed, fixed in 5.2.38 - Thank you!