On Mon, 10 Feb 2014, Rick Stevens wrote: > On 02/10/2014 12:09 PM, Robert P. J. Day issued this missive: > > > > grrrrrr ... following the instructions here: > > > > https://fedoraproject.org/wiki/Building_a_custom_kernel > > > > on how to build a custom kernel (some of which is incorrect, more on > > that later), and builds keep failing at random places, i'm guessing > > because i have a hyperthreaded quad-core laptop, and the "make -j8" is > > simply tripping over itself in arbitrary places. > > > > what's the easiest way to specify a single-threaded build? yes, it > > will take forever, but it will be nice to verify that that's the > > problem. > > > > thanks. > > > > rday > > Theoretically you could do > > MAKEFLAGS="-j 1" rpmbuild blah-blah > > gmake looks for the environment variable "MAKEFLAGS". Most reasonable > makefiles do "MAKEFLAGS+=other-specific-flags", so it should honor it. > Keep in mind that if there are multiple "-j" variables to gmake, it will > only honor the LAST one specified. YMMV. well, this is interesting ... i found the variable "smp_mflags" in kernel.spec, so i ran: $ rpmbuild --showrc to see how it was being set, and found the following: -14: _smp_mflags %( [ -z "$RPM_BUILD_NCPUS" ] \ && RPM_BUILD_NCPUS="`/usr/bin/nproc 2>/dev/null || \ /usr/bin/getconf _NPROCESSORS_ONLN`"; \ if [ "$RPM_BUILD_NCPUS" -gt 16 ]; then \ echo "-j16"; \ elif [ "$RPM_BUILD_NCPUS" -gt 3 ]; then \ echo "-j$RPM_BUILD_NCPUS"; \ else \ echo "-j3"; \ fi ) which i find fascinating since, if you follow the logic, even if you use "RPM_BUILD_NCPUS=1", that code above will still set it to 3. :-) rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ======================================================================== -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
