ffmpeg_full_ocheb

#!/bin/bash
## Arch linux packages system is required, overlay filesystem support is required too.
## Author Andrew S    License for this script itself is GPL
## License for result depends on components, some of them are nonfree
## https://gitlab.com/quarkscript/arch_linux_scripts/tree/master/pkgs_builds_scripts
## https://github.com/quarkscript/Build_from_source
echo "
        This script is try to build ffmpeg-full in overlayed chrooted environment,
as a result all downloaded and builded components (except already installed on system) will be 
included to final package. It is better to install specific drivers and software before run,
like nvidia-dkms intel-media-driver cuda gcc and so on. This script utilize arch linux packages
system, and it uses 3rd party PKGBUILDs from AUR for required components and for ffmpeg-full...
Final license of resulted package is complex and nonfree.
        
Build process is not fully automatic, your presence is required (for a sudo privileges)
"
sleep 15

who=$(whoami)
if [ "$who" == "root" ]; then echo "
to run this script you must be a regular user who can run sudo, but not a root
" ; exit 1 ; fi
 
if !(cat /proc/filesystems | grep -q overlay ); then 
    echo !!! superuser password is required for modprobe overlay 
    sudo modprobe overlay
fi
if !(cat /proc/filesystems | grep -q overlay ); then
    echo "
    Seems current linux kernel doesn't support overlay filesystem.
    overlayfs is required... current build impossible without it
    "; exit 1
fi

mkdir upper work processdir
mkdir upper/build
chown $who upper/build

if [ -f get_ffmpeg-full_arch ]; then
cp get_ffmpeg-full_arch upper/build/get_ffmpeg-full_arch
fi
if [ -f sfslib ]; then
cp sfslib upper/build/sfslib
fi

cat<<EOf>upper/build/runscript
#!/bin/bash
echo "$who ALL=(ALL) NOPASSWD: ALL
" >>/etc/sudoers

if [ ! -f get_ffmpeg-full_arch ]; then
wget https://gitlab.com/quarkscript/arch_linux_scripts/raw/master/pkgs_builds_scripts/get_ffmpeg-full_arch
fi
if [ ! -f get_ffmpeg-full_arch ]; then
wget https://raw.githubusercontent.com/quarkscript/Build_from_source/master/get_ffmpeg-full_arch
fi
if [ ! -f get_ffmpeg-full_arch ]; then
echo "There is some problem of getting required get_ffmpeg-full_arch
you can download it manually from mirrors:
https://gitlab.com/quarkscript/arch_linux_scripts/tree/master/pkgs_builds_scripts
https://github.com/quarkscript/Build_from_source
and palce with current script, then rerun current script.
Build process interrupted"
exit 1 
fi

## extra optimizations off
cat get_ffmpeg-full_arch | sed 's/#cat sfslib/cat sfslib/g' | sed 's/#echo /echo /g' >get_ffmpeg-full_arch.
## extra optimizations on
#cat get_ffmpeg-full_arch | sed 's/#cat sfslib/cat sfslib/g' >get_ffmpeg-full_arch.

chown $who get_ffmpeg-full_arch.
chmod +x get_ffmpeg-full_arch.
sudo -u $who ./get_ffmpeg-full_arch.
EOf
 
chmod +x upper/build/runscript
echo !!! superuser password is required for mount overlay folder and chroot it
sudo mount -t overlay overlay -o,lowerdir=/,upperdir=upper,workdir=work processdir
## additional check of mounted overlay
## continue without overlay may harm your system
if ! $(mount | grep overlay | grep processdir -q); then
    echo '
Something wrong with mounting overlayfs
Process interrupted...'
    exit 1
fi
sudo mount --bind /proc processdir/proc
sudo mount --bind /dev processdir/dev
sudo mount --bind /sys processdir/sys
sudo mount --bind /tmp processdir/tmp

## run
sudo chroot processdir /bin/bash <<EEOOF
cd /build
./runscript |& tee build.log 
chown $who build.log
EEOOF

echo !!! superuser password is required for unmount overlay folder
sudo umount processdir/tmp
sudo umount processdir/proc
sudo umount processdir/dev
sudo umount processdir/sys
sudo umount processdir

# if $(cat upper/build/build.log | grep -v --regexp="failed retrieving file" | grep -iq --regexp="error: "); then
# echo "
# It seems something goes wrong... Build fail
# Check upper/build/build.log
# "
# exit 1
# fi

cp -f upper/build/build.log build.log
echo clear build
sudo rm -fr processdir work upper/build upper/tmp upper/root upper/var upper/home upper/etc/sudoers
echo search and remove character files
for ii in $(find upper/ ! -type d); do
    if [ -c "$ii" ]; then sudo rm -f $ii ; fi
done

tar -czvf source.tar.gz upper

## remove upper dir
sudo rm -fr upper

## set final pkg params, change it as you want
pkgname=ffmpeg-full-ocheb
installdir='/opt'
prefix='o_'
## do not change next variables
pkgdir='$pkgdir'
i='$i'
j='$j'
set '$@'

## gen PKGBUILD
cat<<EOf>PKGBUILD
pkgname=$pkgname
pkgver=$(date +%Y.%m.%e | sed 's/ //g')
pkgrel=1 
pkgdesc='FFMPEG-FULL-Overlayed CHrooted Environment Build'
arch=('i686' 'x86_64')
url='https://www.ffmpeg.org/'
license=(nonfree)
conflicts=($pkgname)
source=(source.tar.gz)
sha512sums=(SKIP)

package() {
mkdir -p $pkgdir$installdir/$pkgname
cp -r upper/* $pkgdir$installdir/$pkgname
echo "binpath $installdir/$pkgname/usr/local/sbin:$installdir/$pkgname/usr/local/bin:$installdir/$pkgname/usr/bin:$installdir/$pkgname/opt/cuda/bin:$installdir/$pkgname/opt/intel/mediasdk/bin:/opt/intel/mediasdk/bin">path.txt
echo "libpath $installdir/$pkgname/usr/lib:$installdir/$pkgname/opt/intel/mediasdk/lib64:$installdir/$pkgname/opt/intel/mediasdk/lib64/mfx:$installdir/$pkgname/opt/intel/mediasdk/lib:$installdir/$pkgname/opt/intel/mediasdk/lib/mfx:$installdir/$pkgname/opt/cuda/lib:$installdir/$pkgname/usr/local/lib">>path.txt
install -Dm 644 path.txt $pkgdir$installdir/$pkgname/path.txt

mkdir -p $pkgdir/usr/bin

        for j in ffmpeg ffplay ffprobe; do
echo '#!/bin/bash
export PATH=''$''(cat $installdir/$pkgname/path.txt | grep binpath | sed "s/binpath //g"):''$''PATH
export LD_LIBRARY_PATH=''$''(cat $installdir/$pkgname/path.txt | grep libpath | sed "s/libpath //g"):''$''LD_LIBRARY_PATH
ffmpeg_string="'$j' "
ttt=$''#
for ((i=1; i<=$''ttt; i+=1)); do
  ffmpeg_string+='"'"'"$''{'"'"'$i'"'"'}"'" '"'
done
eval $''ffmpeg_string
'>$prefix''$j
install -m755 $prefix''$j $pkgdir/usr/bin/$prefix''$j
        done

}
EOf

makepkg

rm -fr pkg src

if $(cat build.log | grep -v --regexp="failed retrieving file" | grep -iq --regexp="error: "); then echo "
    It seems some errors happens. Package may be incomplete. Check build.log for 'error: '"
fi

if (ls | grep $pkgname | grep -q pkg.tar.xz); then
echo "
the package is
'$(ls | grep $pkgname | grep pkg.tar.xz)'
                                            do not forget to install it
This may work on system where it was built, other systems are questionable
new commands are: $prefix""ffmpeg , $prefix""ffplay , $prefix""ffprobe
"
else echo "
Something goes wrong... final package was not built
"
fi