do not generate garbled interp

for parallel make

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

Makerules

@@ -326,10 +326,11 @@ $(top_builddir)%.dep:
 
 $(top_builddir)lib/interp.c: | $(sub_headers)
 	$(Q)$(INSTALL) -d $(dir $@)
-	$(Q)echo "/* Force shared libraries to know about the correct library loader */" > $@
-	$(Q)echo "#include <features.h>" >> $@
+	$(Q)echo "/* Force shared libraries to know about the correct library loader */" > $@.tmp
+	$(Q)echo "#include <features.h>" >> $@.tmp
 	$(Q)echo "const char __dl_ldso__[] attribute_hidden __attribute__ ((weak)) __attribute__ ((section " \
-		"(\".interp\"))) =\""$(RUNTIME_PREFIX)$(MULTILIB_DIR)/$(UCLIBC_LDSO)"\";" >> $@
+		"(\".interp\"))) =\""$(RUNTIME_PREFIX)$(MULTILIB_DIR)/$(UCLIBC_LDSO)"\";" >> $@.tmp
+	$(Q)mv $@.tmp $@
 
 $(interp): $(top_builddir)lib/interp.c
 	$(compile.c)