build: suppress unnecessary kernel config rewrites to speed up build
Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48143
This commit is contained in:
		| @@ -80,6 +80,7 @@ ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y) | |||||||
|   endif |   endif | ||||||
|  |  | ||||||
|   define Kernel/SetInitramfs |   define Kernel/SetInitramfs | ||||||
|  | 	rm -f $(LINUX_DIR)/.config.prev | ||||||
| 	mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old | 	mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old | ||||||
| 	$(call Kernel/SetInitramfs/PreConfigure) | 	$(call Kernel/SetInitramfs/PreConfigure) | ||||||
| 	echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config | 	echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config | ||||||
| @@ -96,9 +97,9 @@ else | |||||||
| endif | endif | ||||||
|  |  | ||||||
| define Kernel/SetNoInitramfs | define Kernel/SetNoInitramfs | ||||||
| 	mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old | 	mv $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config.old | ||||||
| 	grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config | 	grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config.set | ||||||
| 	echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config | 	echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config.set | ||||||
| endef | endef | ||||||
|  |  | ||||||
| define Kernel/Configure/Default | define Kernel/Configure/Default | ||||||
| @@ -109,11 +110,15 @@ define Kernel/Configure/Default | |||||||
| 	echo "# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR)/.config.target | 	echo "# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR)/.config.target | ||||||
| 	echo "# CONFIG_KALLSYMS_UNCOMPRESSED is not set" >> $(LINUX_DIR)/.config.target | 	echo "# CONFIG_KALLSYMS_UNCOMPRESSED is not set" >> $(LINUX_DIR)/.config.target | ||||||
| 	$(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config $(KERNEL_PATCHVER) > $(LINUX_DIR)/.config.override | 	$(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config $(KERNEL_PATCHVER) > $(LINUX_DIR)/.config.override | ||||||
| 	$(SCRIPT_DIR)/kconfig.pl 'm+' '+' $(LINUX_DIR)/.config.target /dev/null $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config | 	$(SCRIPT_DIR)/kconfig.pl 'm+' '+' $(LINUX_DIR)/.config.target /dev/null $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config.set | ||||||
| 	$(call Kernel/SetNoInitramfs) | 	$(call Kernel/SetNoInitramfs) | ||||||
| 	rm -rf $(KERNEL_BUILD_DIR)/modules | 	rm -rf $(KERNEL_BUILD_DIR)/modules | ||||||
|  | 	cmp -s $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config.prev || { \ | ||||||
|  | 		cp $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config; \ | ||||||
|  | 		cp $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config.prev; \ | ||||||
|  | 	} | ||||||
| 	$(_SINGLE) [ -d $(LINUX_DIR)/user_headers ] || $(MAKE) $(KERNEL_MAKEOPTS) INSTALL_HDR_PATH=$(LINUX_DIR)/user_headers headers_install | 	$(_SINGLE) [ -d $(LINUX_DIR)/user_headers ] || $(MAKE) $(KERNEL_MAKEOPTS) INSTALL_HDR_PATH=$(LINUX_DIR)/user_headers headers_install | ||||||
| 	$(SH_FUNC) grep '=[ym]' $(LINUX_DIR)/.config | LC_ALL=C sort | md5s > $(LINUX_DIR)/.vermagic | 	$(SH_FUNC) grep '=[ym]' $(LINUX_DIR)/.config.set | LC_ALL=C sort | md5s > $(LINUX_DIR)/.vermagic | ||||||
| endef | endef | ||||||
|  |  | ||||||
| define Kernel/Configure/Initramfs | define Kernel/Configure/Initramfs | ||||||
|   | |||||||
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	 Felix Fietkau
					Felix Fietkau