* installing *source* package ‘av’ ...
** using staged installation
Found pkg-config cflags and libs!
Using PKG_CFLAGS=-I/usr/include/x86_64-linux-gnu 
Using PKG_LIBS=-lavfilter 
** libs
using C compiler: ‘Debian clang version 16.0.6 (15)’
rm -f av.so fft.o formats.o info.o init.o video.o winfunc.o
clang-16  -I"/home/hornik/tmp/R-d-clang-16/include" -DNDEBUG -I/usr/include/x86_64-linux-gnu   -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3  -fvisibility=hidden -fpic  -g -O3 -Wall -pedantic -c fft.c -o fft.o
clang-16  -I"/home/hornik/tmp/R-d-clang-16/include" -DNDEBUG -I/usr/include/x86_64-linux-gnu   -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3  -fvisibility=hidden -fpic  -g -O3 -Wall -pedantic -c formats.c -o formats.o
clang-16  -I"/home/hornik/tmp/R-d-clang-16/include" -DNDEBUG -I/usr/include/x86_64-linux-gnu   -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3  -fvisibility=hidden -fpic  -g -O3 -Wall -pedantic -c info.c -o info.o
clang-16  -I"/home/hornik/tmp/R-d-clang-16/include" -DNDEBUG -I/usr/include/x86_64-linux-gnu   -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3  -fvisibility=hidden -fpic  -g -O3 -Wall -pedantic -c init.c -o init.o
clang-16  -I"/home/hornik/tmp/R-d-clang-16/include" -DNDEBUG -I/usr/include/x86_64-linux-gnu   -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3  -fvisibility=hidden -fpic  -g -O3 -Wall -pedantic -c video.c -o video.o
clang-16  -I"/home/hornik/tmp/R-d-clang-16/include" -DNDEBUG -I/usr/include/x86_64-linux-gnu   -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3  -fvisibility=hidden -fpic  -g -O3 -Wall -pedantic -c winfunc.c -o winfunc.o
clang-16 -shared -L/home/hornik/tmp/R-d-clang-16/lib -Wl,-O1 -o av.so fft.o formats.o info.o init.o video.o winfunc.o -lavfilter -L/home/hornik/tmp/R-d-clang-16/lib -lR
installing to /srv/hornik/tmp/CRAN/av.Rcheck/00LOCK-av/00new/av/libs
** R
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
** checking absolute paths in shared objects and dynamic libraries
** testing if installed package can be loaded from final location
** testing if installed package keeps a record of temporary installation path
* DONE (av)