Hi,

I just compiled qemu-system-ppc using the the meson-poc-next branch with:
git clone -b meson-poc-next http://www.github.com/bonzini/qemu qemu-mesonbuild-next
cd qemu-mesonbuild-next
mkdir build
cd build
../configure --target-list="ppc-softmmu" --enable-sdl --enable-gtk --disable-werror

qemu-system-ppc is invoked as follows:

./qemu-system-ppc -L pc-bios \
-M mac99,via=pmu -m 512 -sdl \
-serial stdio \
-drive file=/home/hsp/Mac-disks/9.2.img,format=raw,media=disk \
-boot c

Both SDL and GTK GUis are not found, while the configuration overview lists:
SDL support: YES
GTK support: YES

Terminal says:
qemu-system-ppc: Display 'sdl' is not available, or
qemu-system-ppc: Display 'gtk' is not available.

So qemu starts with the vnc server only.

Best,
Howard