Hi, uploaded is
http://www.gnu.org/software/xorriso/xorriso-1.4.5.tar.gz MD5 2e64a46b50c5192a0797e63dd3182b6a Version timestamp : 2016.08.16.131907 which obeys SOURCE_DATE_EPOCH by stating in its man pages ENVIRONMENT ... SOURCE_DATE_EPOCH belongs to the specs of reproducible-builds.org. It is supposed to be either undefined or to contain a decimal number which tells the seconds since january 1st 1970. If it contains a number, then it is used as time value to set the default of --modification-date=, --gpt_disk_guid, and --set_all_file_dates. Startup files and program options can override the effect of SOURCE_DATE_EPOCH. Changeset: http://libburnia-project.org/changeset/5747 If you start xorriso in an environment with SOURCE_DATE_EPOCH it will react as follows. Issue a NOTE message about acceptable values and DEBUG messages about the consequences: $ export SOURCE_DATE_EPOCH=1471290111 $ xorriso -report_about all -as mkisofs ... ... xorriso : NOTE : Environment variable SOURCE_DATE_EPOCH encountered with value 1471290111 xorriso : DEBUG : SOURCE_DATE_EPOCH : -volume_date uuid 2016081519415100 xorriso : DEBUG : SOURCE_DATE_EPOCH : -volume_date all_file_dates 2016081519415100 xorriso : DEBUG : SOURCE_DATE_EPOCH : -boot_image any volume_date_uuid ... The DEBUG messages will not be visible by default. Issue a SORRY message (mild error severity) on unacceptable values, go on with ISO production, and end with non-zero exit value: $ export SOURCE_DATE_EPOCH=xyz1471290111 $ xorriso -as mkisofs ... ... xorriso : SORRY : Malformed environment variable SOURCE_DATE_EPOCH encountered xorriso : HINT : Unset SOURCE_DATE_EPOCH before starting xorriso or see https://reproducible-builds.org/specs/source-date-epoch/ ... $ echo $? 32 The continued work and the exit value are consequences of default settings -abort_on FAILURE -return_with SORRY 32 It can be influenced by the user of xorriso in startup files or program arguments: $ xorriso -abort_on sorry -as mkisofs ... ... xorriso : SORRY : Malformed environment variable SOURCE_DATE_EPOCH encountered xorriso : HINT : Unset SOURCE_DATE_EPOCH before starting xorriso or see https://reproducible-builds.org/specs/source-date-epoch/ xorriso : aborting : -abort_on 'SORRY' encountered 'SORRY' $ echo $? 5 I compared again the MD5s of two rebuild runs of my ISO collection. All identical. All disk GUIDs the same. (Shudder.) In another comparison the modification date of SOURCE_DATE_EPOCH was overridden by program arguments. All identical. At least slight differences between disk GUIDs. So this mixing is reproducible as expected. Have a nice day :) Thomas _______________________________________________ Reproducible-builds mailing list Reproducible-builds@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/reproducible-builds