On 06/16/2014 12:12 AM, Kevin Kofler wrote: > Antonio Trande wrote: >> To pass these problems, I had to decrease '-O' optimization flag >> gradually to '-O1' or '-O0', latest attempt is the removal of '-pipe' >> from RPM_OPT_FLAGS. >> >> What's best choice in these cases? > > Definitely not -O0, that generates really crappy (slow and large) code. I'd > also not recommend -O1. If you must change something, remove -pipe, that > only makes builds slower (given sufficient RAM for the piping), but does not > affect the quality of the generated code.
On 06/16/2014 12:37 AM, Reindl Harald wrote: > Am 16.06.2014 00:12, schrieb Kevin Kofler: > > i would add here > %_smp_mflags -j1 > > if it comes to reduce memory due compile > Thanks for your tips. On 06/16/2014 03:54 AM, John Reiser wrote:>> coin-or-lemon is still in f20 updates-testing repos > > Please mention such facts early and prominently. It saves time > for those who try to help you. Okay. > >> So my RAM is not adequate. > > It *can* work, but your machine is not configured properly for large compiles: > ----- >> $ cat /proc/swaps >> Filename Type Size Used Priority >> $ ### /proc/swaps is empty. There is no swap space. > ----- Honestly, I already had a swap partition but I never verified if it was available and used. > Get some swap space, either a disk partition, or a file of at least 6GB: > dd if=/dev/zero of=my_swap_space bs=32k count=200k > mkswap my_swap_space > swapon my_swap_space > Okay, I have made ready a swap partition mounted at boot time by changing /etc/fstab; 10GB should be sufficient. This is the swap after a first *complete* compilation of SeqAn (at last): $ cat /proc/swaps Filename Type Size Used Priority /dev/sda2 partition 10485756 188752 -1 My hardware needs more than 1 hour just for pair_align.cpp with "make -j1" in .spec. In any case, now I can complete SeqAn building on my PC. Thank you very much. -- Antonio Trande mailto: sagitterATfedoraproject.org http://www.fedoraos.worpress.com https://fedoraproject.org/wiki/User:Sagitter GPG Key: D400D6C4 -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
