pkg:setup
if MacOS.version == :sierra || MacOS.version == :el_capitan
ENV["SDKROOT"] = MacOS.sdk_path
end
ENV.append "CFLAGS", "-std=gnu89"
ENV.prepend_path "PATH", "#{MacOS.sdk_path}/usr/bin"
pkg:configure --with-lispdir=#{elisp} --disable-dependency-tracking
make DESTDIR=${PKG_DEST} install