diff --git a/Makefile b/Makefile
index 181c33b180f20..5301883061589 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,6 @@ $(if $(findstring $(space),$(TOPDIR)),$(error ERROR: The path to the OpenWrt dir
 
 world:
 
-DISTRO_PKG_CONFIG:=$(shell which -a pkg-config | grep -E '\/usr' | head -n 1)
 export PATH:=$(TOPDIR)/staging_dir/host/bin:$(PATH)
 
 ifneq ($(OPENWRT_BUILD),1)
@@ -90,21 +89,12 @@ prereq: $(target/stamp-prereq) tmp/.prereq_packages
 checksum: FORCE
 	$(call sha256sums,$(BIN_DIR),$(CONFIG_BUILDBOT))
 
-buildversion: FORCE
-	$(SCRIPT_DIR)/getver.sh > $(BIN_DIR)/version.buildinfo
-
-feedsversion: FORCE
-	$(SCRIPT_DIR)/feeds list -fs > $(BIN_DIR)/feeds.buildinfo
-
 diffconfig: FORCE
 	mkdir -p $(BIN_DIR)
-	$(SCRIPT_DIR)/diffconfig.sh > $(BIN_DIR)/config.buildinfo
-
-buildinfo: FORCE
-	$(_SINGLE)$(SUBMAKE) -r diffconfig buildversion feedsversion
+	$(SCRIPT_DIR)/diffconfig.sh > $(BIN_DIR)/config.seed
 
 prepare: .config $(tools/stamp-compile) $(toolchain/stamp-compile)
-	$(_SINGLE)$(SUBMAKE) -r buildinfo
+	$(_SINGLE)$(SUBMAKE) -r diffconfig
 
 world: prepare $(target/stamp-compile) $(package/stamp-compile) $(package/stamp-install) $(target/stamp-install) FORCE
 	$(_SINGLE)$(SUBMAKE) -r package/index
diff --git a/rules.mk b/rules.mk
index fbf42f725dddd..1bf59fbb4a982 100644
--- a/rules.mk
+++ b/rules.mk
@@ -70,7 +70,6 @@ TARGET_SUFFIX=$(call qstrip,$(CONFIG_TARGET_SUFFIX))
 BUILD_SUFFIX:=$(call qstrip,$(CONFIG_BUILD_SUFFIX))
 SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
 BUILD_SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
-NPROC:=$(shell sysctl -n hw.ncpu 2>/dev/null || nproc)
 export SHELL:=/usr/bin/env bash
 
 IS_PACKAGE_BUILD := $(if $(filter package/%,$(BUILD_SUBDIR)),1)
@@ -160,7 +159,7 @@ TARGET_ROOTFS_DIR?=$(if $(call qstrip,$(CONFIG_TARGET_ROOTFS_DIR)),$(call qstrip
 TARGET_DIR:=$(TARGET_ROOTFS_DIR)/root-$(BOARD)
 STAGING_DIR_ROOT:=$(STAGING_DIR)/root-$(BOARD)
 STAGING_DIR_IMAGE:=$(STAGING_DIR)/image
-BUILD_LOG_DIR:=$(if $(call qstrip,$(CONFIG_BUILD_LOG_DIR)),$(call qstrip,$(CONFIG_BUILD_LOG_DIR)),$(TOPDIR)/logs)
+BUILD_LOG_DIR:=$(TOPDIR)/logs
 PKG_INFO_DIR := $(STAGING_DIR)/pkginfo
 
 BUILD_DIR_HOST:=$(if $(IS_PACKAGE_BUILD),$(BUILD_DIR_BASE)/hostpkg,$(BUILD_DIR_BASE)/host)
@@ -184,6 +183,8 @@ else
 LIBGCC_A=$(lastword $(wildcard $(TOOLCHAIN_DIR)/lib/gcc/*/*/libgcc.a))
 LIBGCC_S=$(if $(wildcard $(TOOLCHAIN_DIR)/lib/libgcc_s.so),-L$(TOOLCHAIN_DIR)/lib -lgcc_s,$(LIBGCC_A))
 endif
+LIBRPC=-lrpc
+LIBRPC_DEPENDS=+librpc
 
 ifeq ($(CONFIG_ARCH_64BIT),y)
   LIB_SUFFIX:=64