On Mon, 28 Jan 2019 at 23:24, Shlomi Fish <shlomif@xxxxxxxxx> wrote: > > Hi all! > > I am trying to do a https://reproducible-builds.org/ setup in my C / gnu11 > / cmake based FOSS project so I can cache valgrind results. The project is > https://fc-solve.shlomifish.org/ and it has a git repo at > https://github.com/shlomif/fc-solve . It's not clear from your mail if you're using some or all of GCC's options that are relevant, -Wdate-time and -frandom-seed, and the env var SOURCE_DATE_EPOCH.