From 42ffa51fd46bc6fd4bf2c244f00a80df31d01596 Mon Sep 17 00:00:00 2001 From: Vagrant Cascadian Date: Sun, 12 Jun 2016 06:07:07 -0700 Subject: [PATCH] Use C locale when setting CC_VERSION_STRING and LD_VERSION_STRING. The output reported may be locale-dependent, which results in unreproducible builds. $ LANG=C ld --version | head -n 1 GNU ld (GNU Binutils for Debian) 2.26 $ LANG=it_CH.UTF-8 ld --version | head -n 1 ld di GNU (GNU Binutils for Debian) 2.26 Forcing LC_ALL=C ensures the output is consistant regardless of the build environment. Thanks to HW42 for debugging the issue: https://lists.alioth.debian.org/pipermail/reproducible-builds/Week-of-Mon-20160606/005722.html For more information about reproducible builds: https://reproducible-builds.org/ Signed-off-by: Vagrant Cascadian Reviewed-by: Tom Rini --- Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Makefile b/Makefile index d0e7a8a4ec..256d4ff38f 100644 --- a/Makefile +++ b/Makefile @@ -1269,8 +1269,8 @@ prepare: prepare0 define filechk_version.h (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \ echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \ - echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \ - echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; ) + echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \ + echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; ) endef # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date. -- 2.25.1