Req #69727 [NEW]: Remove timestamps from build to make it reproducible

From: thijs at debian dot org Operating system: PHP version: 5.6.9 Package: Unknown/Other Function Bug Type: Feature/Change Request Bug description:Remove timestamps from build to make it reproducible Description: ------------ The PHP build embeds timestamps into the generated binaries at build time. This makes the build not reproducible, as in that the same source code will not generate the bitwise exact same binaries. Reproducible builds are important amongst others to verify the integrity of distributions. See: https://wiki.debian.org/ReproducibleBuilds We believe the value of the embedded timestamps is very limited. They do not indicate which release, commit or git branch has been built, only a date which in itself does not really say something. Therefore it seems safe to remove them. Test script: --------------- https://reproducible.debian.net/rb-pkg/unstable/amd64/php5.html Expected result: ---------------- Building PHP two times yields bitwise identical binaries. Actual result: -------------- Building PHP two times yields bitwise different binaries. -- Edit bug report at https://bugs.php.net/bug.php?id=69727&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69727&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69727&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69727&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69727&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69727&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69727&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69727&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69727&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69727&r=support Expected behavior: https://bugs.php.net/fix.php?id=69727&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69727&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69727&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69727&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69727&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69727&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69727&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69727&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69727&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69727&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69727&r=mysqlcfg