Build of x265 with android toolchain

The build took 00h 01m 02s and was NOT successful.

The program in this build is written in the following languages, according to sloccount:

SLOCLanguage
139,585 asm
47,945 cpp
740 ansic
86 makefile
52 sh
11 python
188,419 total

The process tree of the build process is here.

List of Errors

Log

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Removed vanilla repositories from pacman.conf and added:
# [tuscan]
# Server = file:///var/cache/pacman/pkg/

CMD: pacman -Syy --noconfirm
# :: Synchronizing package databases...
# downloading tuscan.db...

Copied permanent toolchain into container-local sysroot
# /toolchain_root/arm-linux-androideabi --> /sysroot/arm-linux-androideabi
# /toolchain_root/COPYING3.LIB --> /sysroot/COPYING3.LIB
# /toolchain_root/sysroot --> /sysroot/sysroot
# /toolchain_root/COPYING.RUNTIME --> /sysroot/COPYING.RUNTIME
# /toolchain_root/lib --> /sysroot/lib
# /toolchain_root/SOURCES --> /sysroot/SOURCES
# /toolchain_root/lib64 --> /sysroot/lib64
# /toolchain_root/share --> /sysroot/share
# /toolchain_root/bin --> /sysroot/bin
# /toolchain_root/COPYING --> /sysroot/COPYING
# /toolchain_root/COPYING3 --> /sysroot/COPYING3
# /toolchain_root/COPYING.LIB --> /sysroot/COPYING.LIB
# /toolchain_root/include --> /sysroot/include
# /toolchain_root/libexec --> /sysroot/libexec

CMD: sudo -u tuscan PATH=/sysroot/bin:/sysroot/libexec/gcc/arm-linux-androideabi/4.8:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin CC=arm-linux-androideabi-gcc CXX=arm-linux-androideabi-g++ red makepkg --noextract --syncdeps --skipinteg --skippgpcheck --skipchecksums --noconfirm --nocolor --log --noprogressbar --nocheck
# ==> Making package: x265 1.9-1 (Tue Apr 4 21:47:24 UTC 2017)
# ==> Checking runtime dependencies...
# ==> Checking buildtime dependencies...
# ==> Installing missing dependencies...
# error: target not found: yasm
# ==> ERROR: 'pacman' failed to install missing dependencies.