to ${LD} via:
${LDADD.${PROG}}
${LDFLAGS.${PROG}}
${LDSTATIC.${PROG}}
${LDADD.${LIB}}
${LDFLAGS.${LIB}}
OTOH you can't pass parameters to ${CC}, because in suffix rules make(1) only
knows the name of ${.IMPSRC} and ${.TARGET}; it's users' responsivility to
define ${CC} parameters to all the sources of a given ${PROG} / ${LIB}.
Should address bin/42381.
(Bug in this commit log was pointed out by mrg@.)
cf4c152485