| Message ID | 1479376839-27795-8-git-send-email-jezz@sysmic.org |
|---|---|
| State | Superseded |
| Headers | show |
diff --git a/linux/linux.mk b/linux/linux.mk index 7e826cc..a63d1f3 100644 --- a/linux/linux.mk +++ b/linux/linux.mk @@ -209,6 +209,13 @@ define LINUX_TRY_PATCH_TIMECONST endef LINUX_POST_PATCH_HOOKS += LINUX_TRY_PATCH_TIMECONST +ifeq ($(BR2_REPRODUCIBLE),y) +define LINUX_REMOVE_BUILD_ID + sed -i -e s/--build-id/--build-id=none/ $(@D)/Makefile +endef +LINUX_POST_PATCH_HOOKS += LINUX_REMOVE_BUILD_ID +endif + ifeq ($(BR2_LINUX_KERNEL_USE_DEFCONFIG),y) LINUX_KCONFIG_DEFCONFIG = $(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG))_defconfig else ifeq ($(BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG),y)
By default, Linux kernel enable 'build-id'. 'build-id' tends to add random bytes in section .notes of kernel image[1]: $ readelf -Wn .../vmlinux Displaying notes found at file offset 0x00008000 with length 0x00000024: Owner Data size Description GNU 0x00000014 NT_GNU_BUILD_ID (unique build ID bitstring) Build ID: ca689e2ed3944f49474715908e2ac1bb04907fb2 Therefore, we patch kernel Makefile to disable 'build-id'. [1] https://kernelnewbies.org/BuildId This work was sponsored by `BA Robotic Systems'. Signed-off-by: Jérôme Pouiller <jezz@sysmic.org> --- linux/linux.mk | 7 +++++++ 1 file changed, 7 insertions(+)