My mozconfig (2018-08-23)

.mozconfig

. $topsrcdir/browser/config/mozconfig
mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/obj-ff-dbg

ac_add_options --enable-debug
ac_add_options --enable-warnings-as-errors
#ac_add_options --disable-install-strip
#ac_add_options --enable-geckodriver
ac_add_options --disable-crashreporter
#ac_add_options --enable-clang-plugin

mk_add_options MOZ_MAKE_FLAGS="-j8"

mk_add_options "export RUSTC_WRAPPER=sccache"
mk_add_options 'export CARGO_INCREMENTAL=1'

export CC="clang -fcolor-diagnostics"
export CXX="clang++ -fcolor-diagnostics"

export CCACHE_CC="clang"
export CCACHE_CXX="clang++"

export GNU_CC="clang"
export GNU_CXX="clang++"

ac_add_options --with-ccache

#export LD="/usr/bin/ld.gold"