virglrenderer related -device help failure

Host environment

• Operating system: Arch Linux
• OS/kernel version: Linux arch 6.9.4-arch1-1 #1 SMP PREEMPT_DYNAMIC Wed, 12 Jun 2024 20:17:17 +0000 x86_64 GNU/Linux
• Architecture: x86-64
• QEMU flavor: qemu-system-x86_64
• QEMU version: QEMU emulator version 9.0.1
• QEMU command line:

  $ qemu-system-x86_64 -device virtio-vga-gl,help

Description of problem

When QEMU is compiled against a recent virglrenderer version, running the above command fails like this:

$ qemu-system-x86_64 -device virtio-vga-gl,help
qemu-system-x86_64: -device virtio-vga-gl,help: failed to open module: /usr/bin/../lib/qemu/hw-display-virtio-gpu-gl.so: undefined symbol: qemu_egl_display

Steps to reproduce

1. build QEMU against latest virglrenderer (1.0.1)
2. run the above command

Additional information

The cause appears to be related to e8a2db94 cc @marcandre.lureau-rh

Arch only recently updated to latest virglrenderer which has exposed the issue.

Note that the device seems to function correctly in normal usage when combined with -display e.g. -device virtio-vga-gl -display gtk,gl=on