use LDLIBS for linker flags
    
    When you put -lfoo into the dependency line of make, it forces it to
    search /lib and /usr/lib for files to link against.  This can cause
    problems when trying to cross-compile or build for different ABIs.
    Use the standard LDLIBS variable instead.
    
    URL: https://bugs.gentoo.org/505760
    Reported-by: Georgi Georgiev <chutzimir@gmail.com>
    Signed-off-by: Mike Frysinger <vapier@gentoo.org>