Source: tworld Version: 1.3.0-6 Severity: wishlist Tags: patch User: reproducible-builds@lists.alioth.debian.org Usertags: timestamps X-Debbugs-Cc: reproducible-builds@lists.alioth.debian.org
Hi! While working on the “reproducible builds” effort [1], we have noticed that tworld could not be built reproducibly. The attached patch sets the mtimes of all files which are modified during the built to the date of the last changelog entry in order to produce files with reproducible metadata. Cheers, akira [1]: https://wiki.debian.org/ReproducibleBuilds
diff -u tworld-1.3.0/debian/rules tworld-1.3.0/debian/rules --- tworld-1.3.0/debian/rules +++ tworld-1.3.0/debian/rules @@ -18,6 +18,7 @@ DEB_HOST_GNU_TYPE ?= $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE) DEB_BUILD_GNU_TYPE ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE) +BUILD_DATE := $(shell dpkg-parsechangelog --show-field Date) CFLAGS = -Wall -W -fomit-frame-pointer -DNDEBUG LDFLAGS = -Wall -W @@ -114,6 +115,8 @@ -p$(PKG1) -P$(TMP1) cd $(TMP1) && find * -type f ! -regex '^DEBIAN/.*' -print0 | \ xargs -r0 md5sum > DEBIAN/md5sums + find $(TMP1) -newermt '$(BUILD_DATE)' -print0 | \ + xargs -0r touch --no-dereference --date='$(BUILD_DATE)' dpkg --build $(TMP1) .. $(INSTALL_FILE) debian/copyright debian/README.Debian \ @@ -125,6 +128,8 @@ -p$(PKG2) -P$(TMP2) cd $(TMP2) && find * -type f ! -regex '^DEBIAN/.*' -print0 | \ xargs -r0 md5sum > DEBIAN/md5sums + find $(TMP2) -newermt '$(BUILD_DATE)' -print0 | \ + xargs -0r touch --no-dereference --date='$(BUILD_DATE)' dpkg --build $(TMP2) .. binary: binary-indep binary-arch diff -u tworld-1.3.0/debian/changelog tworld-1.3.0/debian/changelog --- tworld-1.3.0/debian/changelog +++ tworld-1.3.0/debian/changelog @@ -1,3 +1,10 @@ +tworld (1.3.0-6.1) UNRELEASED; urgency=medium + + * Non-maintainer upload. + * Fix mtimes before building binary packages to produce reproducible output + + -- akira <marival...@gmail.com> Wed, 15 Jul 2015 19:14:15 +0200 + tworld (1.3.0-6) unstable; urgency=low [ Peter Pentchev ]
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