* configure.ac: add --enable-build-timestamp
--
A group within Debian is working on making the archive rebuildable in
a reproducible way, so that the compiled binary outputs are
byte-for-byte identical when built for the same platform using the
same toolchain. This is useful in providing auditability and
corroboration for users of the operating system.
libgpg-error is very close to reproducible except for embedding the
build timestamp in the generated binary. This timestamp is set in
config.h during ./configure.
This patch allows an external build system to set this embedded
timestamp explicitly, which appears to make the package build
repeatably when ./configure is called with (for example)
--enable=build-timestamp=2014-09-23T01:02+0000
Debian-bug-id: 762397
---
configure.ac | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/configure.ac b/configure.ac
index b32b751..c0435b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -484,7 +484,13 @@ changequote([,])dnl
BUILD_FILEVERSION="${BUILD_FILEVERSION}0,mym4_revision_dec"
AC_SUBST(BUILD_FILEVERSION)
-BUILD_TIMESTAMP=`date -u +%Y-%m-%dT%H:%M+0000 2>/dev/null || date`
+
+AC_ARG_ENABLE([build-timestamp],
+ AC_HELP_STRING([--enable-build-timestamp],
+ [set an explicit build timestamp for
reproducibility.
+ (default is the current time in ISO-8601
format)]),
+ [if test "$enableval" = "no"; then BUILD_TIMESTAMP="<none>";
else BUILD_TIMESTAMP="$enableval"; fi],
+ [BUILD_TIMESTAMP=`date -u +%Y-%m-%dT%H:%M+0000 2>/dev/null ||
date`] )
AC_SUBST(BUILD_TIMESTAMP)
AC_DEFINE_UNQUOTED(BUILD_TIMESTAMP, "$BUILD_TIMESTAMP",
[The time this package was configured for a build])
--
2.1.0
--
To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
