* [PATCH] build: use SOURCE_DATE_EPOCH if available to make the build reproducible
@ 2018-10-03 9:59 Michael Olbrich
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From: Michael Olbrich @ 2018-10-03 9:59 UTC (permalink / raw)
To: keyrings
The build date is included into the binary. As a result, the binaries
change with the build date.
Use SOURCE_DATE_EPOCH[1] if defined. This allows packages to make the build
reproducible by setting SOURCE_DATE_EPOCH to a fixed value.
[1] https://reproducible-builds.org/specs/source-date-epoch/
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
---
Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
index 96b5df716e4c..bcb4b0704117 100644
--- a/Makefile
+++ b/Makefile
@@ -104,7 +104,7 @@ all: keyctl request-key key.dns_resolver
###############################################################################
#RPATH = -Wl,-rpath,$(LIBDIR)
-VCPPFLAGS := -DPKGBUILD="\"$(shell date -u +%F)\""
+VCPPFLAGS := -DPKGBUILD="\"$(shell date $(if $(SOURCE_DATE_EPOCH),--date @$(SOURCE_DATE_EPOCH)) -u +%F)\""
VCPPFLAGS += -DPKGVERSION="\"keyutils-$(VERSION)\""
VCPPFLAGS += -DAPIVERSION="\"libkeyutils-$(APIVERSION)\""
--
2.19.0
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2018-10-03 9:59 [PATCH] build: use SOURCE_DATE_EPOCH if available to make the build reproducible Michael Olbrich
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