From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Sat, 13 Aug 2016 13:47:48 +0000 (+0200)
Subject: kernel: check SOURCE_DATE_EPOCH before setting KBUILD_BUILD_TIMESTAMP
X-Git-Tag: v17.01.0-rc1~1744
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=86ec4104181992400363e5602c11079e79524d9c;p=openwrt%2Fopenwrt.git

kernel: check SOURCE_DATE_EPOCH before setting KBUILD_BUILD_TIMESTAMP

Make sure SOURCE_DATE_EPOCH actually contains something.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---

diff --git a/include/kernel-defaults.mk b/include/kernel-defaults.mk
index 534699b79c..53e733adc0 100644
--- a/include/kernel-defaults.mk
+++ b/include/kernel-defaults.mk
@@ -12,7 +12,7 @@ KERNEL_MAKEOPTS := -C $(LINUX_DIR) \
 	KBUILD_HAVE_NLS=no \
 	KBUILD_BUILD_USER="$(call qstrip,$(CONFIG_KERNEL_BUILD_USER))" \
 	KBUILD_BUILD_HOST="$(call qstrip,$(CONFIG_KERNEL_BUILD_DOMAIN))" \
-	KBUILD_BUILD_TIMESTAMP="$(shell date -u --date="@$(SOURCE_DATE_EPOCH)")" \
+	$(if $(SOURCE_DATE_EPOCH),KBUILD_BUILD_TIMESTAMP="$(shell date -u --date="@$(SOURCE_DATE_EPOCH)")") \
 	KBUILD_BUILD_VERSION="0" \
 	CONFIG_SHELL="$(BASH)" \
 	$(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') \