From 9c949b0dcab5e3b82d066da0041deae2ef2e4d8c Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 6 Jan 2016 18:37:42 +0000 Subject: build: suppress unnecessary kernel config rewrites to speed up build Signed-off-by: Felix Fietkau SVN-Revision: 48143 --- include/kernel-defaults.mk | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/include/kernel-defaults.mk b/include/kernel-defaults.mk index d37787a44b..f3b5e421d1 100644 --- a/include/kernel-defaults.mk +++ b/include/kernel-defaults.mk @@ -80,6 +80,7 @@ ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y) endif define Kernel/SetInitramfs + rm -f $(LINUX_DIR)/.config.prev mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old $(call Kernel/SetInitramfs/PreConfigure) echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config @@ -96,9 +97,9 @@ else endif define Kernel/SetNoInitramfs - mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old - grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config - echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config + mv $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config.old + grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config.set + echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config.set endef 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_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)/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) 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 - $(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 define Kernel/Configure/Initramfs -- cgit v1.2.3