I couldn't reproduce with nouveau, vdpauinfo seems hardcoded to look for vdpau_nvidia, and just ignores vdpau_nouveau.
I have a patch that adds the symbol, but it feels ugly. I'm sending it and we can test it, if it does fix it I guess we should figure out why we need to keep adding --Wl,-whole-archive where autotools doesn't. Quoting Eric Engestrom (2018-01-11 08:58:32) > On Tuesday, 2018-01-09 10:09:16 -0800, Dylan Baker wrote: > > I'm not sure off the top of my head. I don't have an r600 anymore, but I > > have an > > SI and a nouveau machine, so I'll see if I can reproduce the problem there > > and > > fix it. > > I can confirm, the symbol is missing when building with meson: > > $ ninja src/gallium/targets/vdpau/libvdpau_gallium.so > $ nm -D --defined-only src/gallium/targets/vdpau/libvdpau_gallium.so | grep > -c vdp_imp_device_create_x11 > 0 > > I can't figure out why either, though. > > > > > Dylan > > > > Quoting Marc Dietrich (2018-01-09 02:38:33) > > > Hi Dylan, > > > > > > just found that vdpau does not work on r600 with meson build. Some > > > missing > > > symbol, but I cannot figure out why: > > > > > > # vdpauinfo > > > display: :0 screen: 0 > > > /usr/lib64/vdpau/libvdpau_r600.so.1: undefined symbol: > > > vdp_imp_device_create_x11 > > > Error creating VDPAU device: 1 > > > > > > The size of the library differs significant: > > > autotools: 2417768 libvdpau_r600.so.1.0.0 > > > meson : 717368 libvdpau_r600.so.1.0.0 > > With all the default options (except buildtype=release for meson), > I'm getting these sizes: > 5320936 meson/usr/lib/vdpau/libvdpau_r600.so.1.0.0 > 25190032 autotools/usr/lib/vdpau/libvdpau_r600.so.1.0.0 > > but if I strip them, the autotools one shrinks to about a tenth of > its size, and now the meson one actually looks bigger: > 4722192 meson/usr/lib/vdpau/libvdpau_r600.so.1.0.0.stripped > 2788936 autotools/usr/lib/vdpau/libvdpau_r600.so.1.0.0.stripped > > I'm not sure how much you can guess from the size of the binary though, > too much is different between the two builds. > Whether the symbols are exposed (see above) is a better metric IMO. > > > > > > > Any idea? > > > > > > Marc
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