For compiling libx265 with multi depth(bit)

multilib.sh

#!/bin/sh

mkdir -p 8bit 10bit 12bit

cd 12bit
cmake ../../../source -DHIGH_BIT_DEPTH=ON -DEXPORT_C_API=OFF -DENABLE_SHARED=OFF -DENABLE_CLI=OFF -DMAIN12=ON -DCMAKE_INSTALL_PREFIX="$HOME/ffmpeg_build"
make -j16

cd ../10bit
cmake ../../../source -DHIGH_BIT_DEPTH=ON -DEXPORT_C_API=OFF -DENABLE_SHARED=OFF -DENABLE_CLI=OFF -DCMAKE_INSTALL_PREFIX="$HOME/ffmpeg_build"
make -j16

cd ../8bit
ln -sf ../10bit/libx265.a libx265_main10.a
ln -sf ../12bit/libx265.a libx265_main12.a
cmake ../../../source -DEXTRA_LIB="x265_main10.a;x265_main12.a;-ldl" -DEXTRA_LINK_FLAGS=-L. -DLINKED_10BIT=ON -DLINKED_12BIT=ON -DCMAKE_INSTALL_PREFIX="$HOME/ffmpeg_build" -DENABLE_SHARED:bool=off
make -j16

# rename the 8bit library, then combine all three into libx265.a
mv libx265.a libx265_main.a

# On Linux, we use GNU ar to combine the static libraries together
ar -M <<EOF
CREATE libx265.a
ADDLIB libx265_main.a
ADDLIB libx265_main10.a
ADDLIB libx265_main12.a
SAVE
END
EOF