On Thu, Aug 18, 2016 at 10:02 PM, Yaroslav Halchenko <deb...@onerussian.com> wrote:
> > On Thu, 18 Aug 2016, Aaron M. Ucko wrote: > > > Source: singularity-container > > Version: 2.1.2-1 > > Severity: important > > Justification: fails to build from source > > > Builds of singularity-container for architectures other than x86 Linux > > have been failing at the configuration stage. The non-Linux builds > > complain that various CLONE_* flags, most crucially CLONE_NEWNS, are > > unavailable; I presume these platforms are a lost cause. As for Linux > > on non-x86, the build system complains that the architecture "is not > > supported"; I haven't checked whether that's simply a case of > > excessive conservatism. > > > Could you please take a look and restrict the package's official > > Architecture accordingly? > > I thought that the idea generally is to not restrict by default and > possibly to let interested in porting to look at it. Policy 5.6.8 > states "Specifying a list of architectures or architecture wildcards > other than any is for the minority of cases where a program is not > portable or is not useful on some architectures". > > Theoretically I think singularity could be ported for other > architectures (CCing upstream for clarification), not that me or > upstream is going to embark on such a voyage ATM ;) > > If there is somewhere policy/recommendation that I should better drop > from any to a restricted list of architectures, please let me know, and > I will do so for the next release. > That is a good point regarding non-Linux builds. At present I am not checking for the clone() or unshare() system calls, as they have been on Linux for quite some time so I didn't think of them not being available, but they are Linux specific system calls (as are the CLONE_* flags which I am checking for). So it sounds like I need to add some checks for clone() and unshare() and bomb out early with a reasonable error message about an unsupported platform before checking for the flags. As far as architecture support, Singularity *should* build on non-x86 architectures just fine, but my ability to port and test are limited to x86. I am aware that IBM has successfully ported and used Singularity on Power, but I've never gotten any patches so I assumed it just worked. Are the failed build logs for non-x86 available? Thank you! -- Gregory M. Kurtzer High Performance Computing Services (HPCS) University of California Lawrence Berkeley National Laboratory One Cyclotron Road, Berkeley, CA 94720
