Hello Chris, thanks for the report and patch.
* Chris Demetriou wrote on Mon, Mar 15, 2010 at 08:12:31PM CET: > A project that I work on wants to make sure our builds are > deterministic, i.e., same input sources -> same exact output binaries. > We've solved several problems (e.g., I've added the ar 'D' flag) > related to this. The last remaining issue is in libtool. libtool also uses 'ar' in a number of places and cases, most prominently, but not limited to, the static linking scenario. Do you have measures in place to use 'D' there too? IIRC some (non-GNU) compilers (or the assemblers they call, I don't recall) also add time stamps to generated objects. Are they relevant to you? I'm not sure whether one can turn stamps off everywhere; have you looked into normalizing output like in GCC's contrib/compare-debug? Then, it would be nice to be able to confirm that we produce stable output in cases where this is desirable; IOW, have testsuite exposure. Can you describe your setup in a bit more detail? (You could also provide a test case, but that will probably require copyright papers then first.) Thanks, Ralf > 2010-03-15 Chris Demetriou <c...@google.com> > > Sort output of 'find' to enable deterministic builds. > * libltdl/config/ltmain.m4sh (func_extract_archives): Sort > output of 'find'. > * libltdl/m4/libtool.m4 (_LT_LANG_CXX_CONFIG): Likewise.
