>>> v4l2loopback 0.13.2 Extracting
mkdir -p /home/buildroot/instance-0/output-1/per-package/v4l2loopback/host
rsync -a --hard-links --link-dest=/home/buildroot/instance-0/output-1/per-package/host-tar/host/ /home/buildroot/instance-0/output-1/per-package/host-tar/host/ /home/buildroot/instance-0/output-1/per-package/v4l2loopback/host
mkdir -p /home/buildroot/instance-0/output-1/per-package/v4l2loopback/target
rsync -a --hard-links --link-dest=/home/buildroot/instance-0/output-1/per-package/host-tar/target/ /home/buildroot/instance-0/output-1/per-package/host-tar/target/ /home/buildroot/instance-0/output-1/per-package/v4l2loopback/target
gzip -d -c /home/buildroot/instance-0/dl/v4l2loopback/v4l2loopback-0.13.2.tar.gz | /home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/bin/tar --strip-components=1 -C /home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2   -xf -
>>> v4l2loopback 0.13.2 Patching
>>> v4l2loopback 0.13.2 Configuring
mkdir -p /home/buildroot/instance-0/output-1/per-package/v4l2loopback/host
rsync -a --hard-links --link-dest=/home/buildroot/instance-0/output-1/per-package/host-skeleton/host/ /home/buildroot/instance-0/output-1/per-package/host-skeleton/host/ /home/buildroot/instance-0/output-1/per-package/v4l2loopback/host
rsync -a --hard-links --link-dest=/home/buildroot/instance-0/output-1/per-package/linux/host/ /home/buildroot/instance-0/output-1/per-package/linux/host/ /home/buildroot/instance-0/output-1/per-package/v4l2loopback/host
rsync -a --hard-links --link-dest=/home/buildroot/instance-0/output-1/per-package/skeleton/host/ /home/buildroot/instance-0/output-1/per-package/skeleton/host/ /home/buildroot/instance-0/output-1/per-package/v4l2loopback/host
rsync -a --hard-links --link-dest=/home/buildroot/instance-0/output-1/per-package/toolchain/host/ /home/buildroot/instance-0/output-1/per-package/toolchain/host/ /home/buildroot/instance-0/output-1/per-package/v4l2loopback/host
mkdir -p /home/buildroot/instance-0/output-1/per-package/v4l2loopback/target
rsync -a --hard-links --link-dest=/home/buildroot/instance-0/output-1/per-package/host-skeleton/target/ /home/buildroot/instance-0/output-1/per-package/host-skeleton/target/ /home/buildroot/instance-0/output-1/per-package/v4l2loopback/target
rsync -a --hard-links --link-dest=/home/buildroot/instance-0/output-1/per-package/linux/target/ /home/buildroot/instance-0/output-1/per-package/linux/target/ /home/buildroot/instance-0/output-1/per-package/v4l2loopback/target
rsync -a --hard-links --link-dest=/home/buildroot/instance-0/output-1/per-package/skeleton/target/ /home/buildroot/instance-0/output-1/per-package/skeleton/target/ /home/buildroot/instance-0/output-1/per-package/v4l2loopback/target
rsync -a --hard-links --link-dest=/home/buildroot/instance-0/output-1/per-package/toolchain/target/ /home/buildroot/instance-0/output-1/per-package/toolchain/target/ /home/buildroot/instance-0/output-1/per-package/v4l2loopback/target
>>> v4l2loopback 0.13.2 Building
>>> v4l2loopback 0.13.2 Building kernel module(s)
GIT_DIR=. PATH="/home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/bin:/home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" PKG_CONFIG="/home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG_LIBDIR="/home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/lib/pkgconfig:/home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/share/pkgconfig" BR_BINARIES_DIR=/home/buildroot/instance-0/output-1/images /usr/bin/make -j17 -C /home/buildroot/instance-0/output-1/build/linux-6.12.7 HOSTCC="/usr/bin/gcc -O2 -isystem /home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/include -L/home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/lib -Wl,-rpath,/home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/lib" ARCH=sparc64 KCFLAGS="-Wno-attribute-alias" INSTALL_MOD_PATH=/home/buildroot/instance-0/output-1/per-package/v4l2loopback/target CROSS_COMPILE="/home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/bin/sparc64-buildroot-linux-gnu-" WERROR=0 REGENERATE_PARSERS=1 DEPMOD=/home/buildroot/instance-0/output-1/per-package/v4l2loopback/host/sbin/depmod  PWD=/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/. M=/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/. modules
make[1]: Entering directory '/home/buildroot/instance-0/output-1/build/linux-6.12.7'
  CC [M]  /home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.o
  MODPOST /home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./Module.symvers
ERROR: modpost: "v4l2_event_queue" [/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.ko] undefined!
ERROR: modpost: "video_unregister_device" [/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.ko] undefined!
ERROR: modpost: "v4l2_device_unregister" [/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.ko] undefined!
ERROR: modpost: "v4l2_ctrl_handler_free" [/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.ko] undefined!
ERROR: modpost: "v4l2_fill_pixfmt" [/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.ko] undefined!
ERROR: modpost: "v4l2_fill_pixfmt_mp" [/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.ko] undefined!
ERROR: modpost: "v4l2_event_subscribe" [/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.ko] undefined!
ERROR: modpost: "v4l2_ctrl_subscribe_event" [/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.ko] undefined!
ERROR: modpost: "v4l2_device_register" [/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.ko] undefined!
ERROR: modpost: "video_device_alloc" [/home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./v4l2loopback.ko] undefined!
WARNING: modpost: suppressed 14 unresolved symbol warnings because there were too many)
make[3]: *** [scripts/Makefile.modpost:145: /home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/./Module.symvers] Error 1
make[2]: *** [/home/buildroot/instance-0/output-1/build/linux-6.12.7/Makefile:1889: modpost] Error 2
make[1]: *** [Makefile:224: __sub-make] Error 2
make[1]: Leaving directory '/home/buildroot/instance-0/output-1/build/linux-6.12.7'
make: *** [package/pkg-generic.mk:290: /home/buildroot/instance-0/output-1/build/v4l2loopback-0.13.2/.stamp_built] Error 2
make: Leaving directory '/home/buildroot/instance-0/buildroot'