diff --git a/share/mk/bsd.dep.mk b/share/mk/bsd.dep.mk
--- a/share/mk/bsd.dep.mk
+++ b/share/mk/bsd.dep.mk
@@ -170,10 +170,13 @@
 	@rm -f ${.TARGET}
 	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
 .if defined(LIB)
-CLEANFILES+= ${_D}.pico ${_D}.po ${_D}.nossppico
+CLEANFILES+= ${_D}.pico ${_D}.pieo ${_D}.po ${_D}.nossppico
 ${_D}.pico: ${_DSRC} ${SOBJS:S/^${_D}.pico$//}
 	@rm -f ${.TARGET}
 	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
+${_D}.pieo: ${_DSRC} ${OBJS:S/^${_D}.pieo$//}
+	@rm -f ${.TARGET}
+	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
 ${_D}.po: ${_DSRC} ${POBJS:S/^${_D}.po$//}
 	@rm -f ${.TARGET}
 	${DTRACE} ${DTRACEFLAGS} -G -o ${.TARGET} -s ${.ALLSRC:N*.h}
diff --git a/share/mk/local.autodep.mk b/share/mk/local.autodep.mk
--- a/share/mk/local.autodep.mk
+++ b/share/mk/local.autodep.mk
@@ -9,7 +9,8 @@
 .endif
 
 NOSSPPICO?= .nossppico
-OBJ_EXTENSIONS+= ${NOSSPPICO}
+PIEO?= .pieo
+OBJ_EXTENSIONS+= ${NOSSPPICO} ${PIEO}
 
 CFLAGS+= ${CFLAGS_LAST}
 CXXFLAGS+= ${CXXFLAGS_LAST}