From f5860f898a155c6e1f33813a8be7420135cb3481 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Tue, 23 Aug 2016 11:05:56 +0200 Subject: [PATCH] build: use perl instead of GNU date for KBUILD_BUILD_TIMESTAMP Fixes warning on non-Linux systems Signed-off-by: Felix Fietkau --- include/kernel-defaults.mk | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/include/kernel-defaults.mk b/include/kernel-defaults.mk index bae8cd0ee3..2c4bcec474 100644 --- a/include/kernel-defaults.mk +++ b/include/kernel-defaults.mk @@ -5,6 +5,12 @@ # See /LICENSE for more information. # +ifneq ($(SOURCE_DATE_EPOCH),) + ifndef DUMP + KBUILD_BUILD_TIMESTAMP:=$(shell perl -e 'print scalar gmtime($(SOURCE_DATE_EPOCH))') + endif +endif + KERNEL_MAKEOPTS := -C $(LINUX_DIR) \ HOSTCFLAGS="$(HOST_CFLAGS) -Wall -Wmissing-prototypes -Wstrict-prototypes" \ CROSS_COMPILE="$(KERNEL_CROSS)" \ @@ -12,7 +18,7 @@ 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))" \ - $(if $(SOURCE_DATE_EPOCH),KBUILD_BUILD_TIMESTAMP="$(shell date -u --date="@$(SOURCE_DATE_EPOCH)")") \ + KBUILD_BUILD_TIMESTAMP="$(KBUILD_BUILD_TIMESTAMP)" \ KBUILD_BUILD_VERSION="0" \ CONFIG_SHELL="$(BASH)" \ $(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') \