From 5fe923b15d94e27fa6db863a6d994bfb4355e4cb Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Sat, 13 Aug 2016 11:29:46 +0200 Subject: [PATCH] kernel: allow reproducable builds Similar how we fix the file times in the filesystems, fix the build time of the kernel, and make the build number static. This should allow the kernel build to be reproducable when combined with setting the KERNEL_BUILD_USER and _DOMAIN in case of different machines. The reproducability only applies to non-initramfs kernels, those still require additional changes. Signed-off-by: Jonas Gorski --- include/kernel-defaults.mk | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/kernel-defaults.mk b/include/kernel-defaults.mk index 11dff75305..534699b79c 100644 --- a/include/kernel-defaults.mk +++ b/include/kernel-defaults.mk @@ -12,6 +12,8 @@ KERNEL_MAKEOPTS := -C $(LINUX_DIR) \ KBUILD_HAVE_NLS=no \ KBUILD_BUILD_USER="$(call qstrip,$(CONFIG_KERNEL_BUILD_USER))" \ KBUILD_BUILD_HOST="$(call qstrip,$(CONFIG_KERNEL_BUILD_DOMAIN))" \ + KBUILD_BUILD_TIMESTAMP="$(shell date -u --date="@$(SOURCE_DATE_EPOCH)")" \ + KBUILD_BUILD_VERSION="0" \ CONFIG_SHELL="$(BASH)" \ $(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') \ $(if $(PKG_BUILD_ID),LDFLAGS_MODULE=--build-id=0x$(PKG_BUILD_ID)) -- 2.30.2