Control: reassign -1 src:opencv Control: forcemerge 998140 -1 Sorry, I see that this has already been fixed in a subsequent Debian upload and Ubuntu is just behind.
On Mon, Dec 06, 2021 at 12:13:57PM -0800, Steve Langasek wrote: > Package:libopencv-dnn4.5 > Version: 4.5.4+dfsg-1 > Severity: serious > User: ubuntu-de...@lists.ubuntu.com > Usertags: origin-ubuntu jammy > > libopencv-dnn is provided as a shared library in Debian, but it evidently > does not have a stable ABI. > > This shows up in the gyoto autopkgtests, which, miserably, don't exit > non-zero on these errors: > > $ ./debian/tests/gyoto-mk-video > WARNING: PatternDisk: not tested for repeat_phi_>1; check your results > Traceback (most recent call last): > File "<string>", line 2, in <module> > File "/usr/lib/python3/dist-packages/gyoto/animate.py", line 823, in main > mk_video(**args.__dict__) > File "/usr/lib/python3/dist-packages/gyoto/animate.py", line 655, in > mk_video > video=backend(output, fps, width, height) > File "/usr/lib/python3/dist-packages/gyoto/animate.py", line 125, in > __init__ > import cv2 > ImportError: > /usr/lib/python3/dist-packages/cv2.cpython-39-x86_64-linux-gnu.so: undefined > symbol: _ZTIN2cv3dnn14dnn4_v202106085LayerE > $ > > This symbol was present in opencv 4.5.3 but is not present in 4.5.4: > > $ apt download libopencv-dnn4.5=4.5.3+dfsg-1ubuntu1 > Get:1 http://archive.ubuntu.com/ubuntu jammy/universe amd64 libopencv-dnn4.5 > amd64 4.5.3+dfsg-1ubuntu1 [972 kB] > Fetched 972 kB in 3s (307 kB/s) > $ dpkg-deb -R libopencv-dnn4.5_4.5.3+dfsg-1ubuntu1_amd64.deb dnn-4.5.3 > $ objdump -T dnn-4.5.3/usr/lib/x86_64-linux-gnu/libopencv_dnn.so.4.5|grep > _ZTIN2cv3dnn14dnn4_v202106085LayerE > 00000000002fd448 g DO .data.rel.ro 0000000000000018 Base > _ZTIN2cv3dnn14dnn4_v202106085LayerE > $ apt download libopencv-dnn4.5 > Get:1 http://archive.ubuntu.com/ubuntu jammy-proposed/universe amd64 > libopencv-dnn4.5 amd64 4.5.4+dfsg-1ubuntu2 [1102 kB] > Fetched 1102 kB in 2s (550 kB/s) > $ dpkg-deb -R libopencv-dnn4.5_4.5.4+dfsg-1ubuntu2_amd64.deb dnn-4.5.4 > $ objdump -T dnn-4.5.4/usr/lib/x86_64-linux-gnu/libopencv_dnn.so.4.5|grep > _ZTIN2cv3dnn14dnn4_v202106085LayerE > $ > > opencv uses no symbols files to prevent ABI skew; and from the type name > (dnn4_v20210608) it appears this is not a stable interface. But it is > exported, and it is used. > > This is also not a one-off symbol change. > > $ diff -u <(objdump -T > dnn-4.5.3/usr/lib/x86_64-linux-gnu/libopencv_dnn.so.4.5 | grep '\.text' | cut > -b50- |sort) <(objdump -T > dnn-4.5.4/usr/lib/x86_64-linux-gnu/libopencv_dnn.so.4.5 | grep '\.text' | cut > -b50- |sort) | grep -c ^- > 256 > $ > > Since upstream doesn't ship a stable ABI here, there are basically two > choices: > > - change the binary package name and conflict with older versions of the > library (libopencv-dnn4.5debian1 Conflicts: libopencv-dnn4.5) > - ship this as a static library only. > > -- > Steve Langasek Give me a lever long enough and a Free OS > Debian Developer to set it on, and I can move the world. > Ubuntu Developer https://www.debian.org/ > slanga...@ubuntu.com vor...@debian.org -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developer https://www.debian.org/ slanga...@ubuntu.com vor...@debian.org
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