The goal of reproducible builds is that a rebuild of the same source code with the same compiler, libraries, etc. should result in the same binaries. SOURCE_DATE_EPOCH provides a standard way for build systems to fill in the date of the latest source change, typically from a git commit or from metadata like the debian/changelog in Debian packages.
This does not change anything if SOURCE_DATE_EPOCH is not defined; the intention is that a larger build system like a Debian package will define it.
a-hurst
commented
1 year ago
From: Chris Lamb
The goal of reproducible builds is that a rebuild of the same source code with the same compiler, libraries, etc. should result in the same binaries. SOURCE_DATE_EPOCH provides a standard way for build systems to fill in the date of the latest source change, typically from a git commit or from metadata like the debian/changelog in Debian packages.
This does not change anything if SOURCE_DATE_EPOCH is not defined; the intention is that a larger build system like a Debian package will define it.
Please see https://reproducible-builds.org/ for more information about reproducible builds.
Bug-Debian: https://bugs.debian.org/1031412
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