https://buildd.debian.org/status/fetch.php?pkg=libyuv&arch=loong64&ver=0.0.1959.20260817-1&stamp=1787859793&raw=0

...
[ 71%] Linking CXX executable yuvconvert
/usr/bin/cmake -E cmake_link_script CMakeFiles/yuvconvert.dir/link.txt --verbose=1
/usr/bin/loongarch64-linux-gnu-ld.bfd: libyuv.a(convert.cc.o): in function `L0
':
./obj-loongarch64-linux-gnu/./source/convert.cc:780:(.text+0xe1c): undefined reference to `RGBToYMatrixRow_Any_LASX'
/usr/bin/loongarch64-linux-gnu-ld.bfd: libyuv.a(convert.cc.o): in function `Ix10ToI010':
./obj-loongarch64-linux-gnu/./source/convert.cc:780:(.text+0xe20): undefined reference to `RGBToYMatrixRow_Any_LASX'
/usr/bin/loongarch64-linux-gnu-ld.bfd: libyuv.a(convert.cc.o): in function `RAWToJ420':
./obj-loongarch64-linux-gnu/./source/convert.cc:3314:(.text+0x5828): undefined reference to `RGBToYMatrixRow_Any_LASX'
/usr/bin/loongarch64-linux-gnu-ld.bfd: ./obj-loongarch64-linux-gnu/./source/convert.cc:3314:(.text+0x582c): undefined reference to `RGBToYMatrixRow_Any_LASX'
/usr/bin/loongarch64-linux-gnu-ld.bfd: ./obj-loongarch64-linux-gnu/./source/convert.cc:3341:(.text+0x59c8): undefined reference to `RGBToYMatrixRow_Any_LASX'
/usr/bin/loongarch64-linux-gnu-ld.bfd: libyuv.a(convert.cc.o):./obj-loongarch64-linux-gnu/./source/convert.cc:3341: more undefined references to `RGBToYMatrixRow_Any_LASX' follow
collect2: error: ld returned 1 exit status
/usr/bin/loongarch64-linux-gnu-g++ -g -O2 -ffile-prefix-map=/build/reproducible-path/libyuv-0.0.1959.20260817=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -Wno-narrowing -mlsx -mlasx -Wl,-z,relro -Wl,-z,now -Wl,--dependency-file=CMakeFiles/yuvconvert.dir/link.d CMakeFiles/yuvconvert.dir/util/yuvconvert.cc.o -o yuvconvert  libyuv.a
make[3]: *** [CMakeFiles/yuvconvert.dir/build.make:105: yuvconvert] Error 1

We believe that the bug you reported is fixed in the latest version of
libyuv, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1145927@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Boyuan Yang <byang@debian.org> (supplier of updated libyuv package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Fri, 04 Sep 2026 22:06:21 -0400
Source: libyuv
Architecture: source
Version: 0.0.1971.20260904-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Multimedia Maintainers <debian-multimedia@lists.debian.org>
Changed-By: Boyuan Yang <byang@debian.org>
Closes: 1145927
Changes:
 libyuv (0.0.1971.20260904-1) unstable; urgency=medium
 .
   * New upstream snapshot.
     + Fix FTBFS on loong64: add the missing RGBToYMatrixRow_Any_LASX
       row wrapper and fix LSX/LASX RGBToY kernels. (Closes: #1145927)
     + LSX-only kernels are no longer compiled with -mlasx.
   * debian/libyuv0.shlibs: Bump required version.
   * debian/patches/: Refresh patches.
   * debian/rules: Drop the sed call on CMakeLists.txt; upstream now links
     libjpeg into the shared library directly.
Checksums-Sha1:
 0e90ff747c133f010616af5d01b2a51803934ffc 2320 libyuv_0.0.1971.20260904-1.dsc
 c4cfaaaa1e99e1bf6ea5ec00ba84bca0e7d3a2e0 393448 libyuv_0.0.1971.20260904.orig.tar.xz
 b62fdb0ee84eab36d6c438ac8fffa084065d7945 8088 libyuv_0.0.1971.20260904-1.debian.tar.xz
 00ebf254c2536cfd443cfe77abf6b13c2e69c951 7798 libyuv_0.0.1971.20260904-1_amd64.buildinfo
Checksums-Sha256:
 9da7593ea0e817f4e0f51cf548acfcdf85fea1b7470fd7f65fdefd1f5fecbe11 2320 libyuv_0.0.1971.20260904-1.dsc
 9dc0432edf3f36cfa031b5e6a46c206d40773868a9e50605ac9f8dcb8d08c2cc 393448 libyuv_0.0.1971.20260904.orig.tar.xz
 b96a3f4d0621fc5e6904a5f827be9666f20d555d5557b8d9827ec14287d0e6c4 8088 libyuv_0.0.1971.20260904-1.debian.tar.xz
 4a8a1d4445ff64269bd99bb287acd133bf8f85fb1ff458e36cf4ce624683bf04 7798 libyuv_0.0.1971.20260904-1_amd64.buildinfo
Files:
 78c70f07754c6b10aade30c86e62623d 2320 libs optional libyuv_0.0.1971.20260904-1.dsc
 60cf48f502284e24fa1b6202e4d27f8a 393448 libs optional libyuv_0.0.1971.20260904.orig.tar.xz
 8687cc5901047c413778a9d006a89d33 8088 libs optional libyuv_0.0.1971.20260904-1.debian.tar.xz
 c5a64b159a9d838fafdbd51abf2d544a 7798 libs optional libyuv_0.0.1971.20260904-1_amd64.buildinfo
-----BEGIN PGP SIGNATURE-----
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=elok
-----END PGP SIGNATURE-----