Command explanations
mkdir ../binutils-build: The installation
instructions for Binutils recommend creating a separate build directory
instead of compiling the package inside the source tree. So, we create a
binutils-build directory and work from there.
--disable-nls: This option disables
internationalization (also known as i18n). We don't need this for our
static programs and nls often causes problems when you're linking
statically.
LDFLAGS=-all-static: Setting the variable LDFLAGS
to the value -all-static causes binutils to be linked statically.