the binary was compiled with -Os, linked against musl, and stripped to
keep size down
compiled with the following script (assuming you are on a musl based host):
VERSION=2.30
curl -LOC - http://ftp.gnu.org/gnu/binutils/binutils-$VERSION.tar.gz
bsdtar xf binutils-$VERSION.tar.gz
cd binutils-$VERSION
./configure --target=mips-linux-musl \
--with-gnu-ld \
--enable-64-bit-bfd \
--enable-multilib \
--enable-plugins \
--disable-gold \
--disable-shared \
--disable-werror \
--disable-nls \
--prefix=$(pwd)/out || exit 1
make configure-host
make CFLAGS=-Os LDFLAGS="-s -all-static" || exit 1
make install