Build of ebtables with clang_glibc toolchain

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

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

SLOCLanguage
8,635 ansic
218 sh
213 makefile
45 perl
9,111 total

The process tree of the build process is here.

Several sub-process invocations were improper; see the process tree for details. Summary:

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/sysroot --> /sysroot/sysroot
# /toolchain_root/lib --> /sysroot/lib
# /toolchain_root/sbin --> /sysroot/sbin
# /toolchain_root/lib64 --> /sysroot/lib64
# /toolchain_root/etc --> /sysroot/etc
# /toolchain_root/share --> /sysroot/share
# /toolchain_root/bin --> /sysroot/bin
# /toolchain_root/var --> /sysroot/var
# /toolchain_root/usr --> /sysroot/usr
# /toolchain_root/glibc-build --> /sysroot/glibc-build
# /toolchain_root/x86_64-pc-linux-gnu --> /sysroot/x86_64-pc-linux-gnu
# /toolchain_root/include --> /sysroot/include
# /toolchain_root/libexec --> /sysroot/libexec

CMD: sudo -u tuscan PATH=/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin CC=clang CXX=clang++ red makepkg --noextract --syncdeps --skipinteg --skippgpcheck --skipchecksums --noconfirm --nocolor --log --noprogressbar --nocheck
# ==> Making package: ebtables 2.0.10_4-6 (Thu Apr 13 18:20:27 UTC 2017)
# ==> Checking runtime dependencies...
# ==> Checking buildtime dependencies...
# ==> WARNING: Using existing $srcdir/ tree
# ==> Starting build()...
# gcc -Wunused -Wall -Werror -Wno-error=unused-but-set-variable -fPIC -O3 -DPROGVERSION=\"2.0.10-4\" -DPROGNAME=\"ebtables\" -DPROGDATE=\"December\ 2011\" -D_PATH_ETHERTYPES=\"/etc/ethertypes\" -DEBTD_ARGC_MAX=50 -DEBTD_CMDLINE_MAXLN=2048 -DLOCKFILE=\"/var/lib/ebtables/lock\" -DLOCKDIR=\"/var/lib/ebtables/\" -c -o getethertype.o getethertype.c -Iinclude/
# error: unknown warning option '-Werror=unused-but-set-variable'; did you mean '-Werror=unused-const-variable'? [-Werror,-Wunknown-warning-option]
# make: *** [Makefile:81: getethertype.o] Error 1
# ==> ERROR: A failure occurred in build().
# Aborting...