2012/2/4 Julien Puydt <julien.pu...@laposte.net>: > Hi, > > I upgraded my AC100 to (a snapshot of the forthcoming) ubuntu precise, > thinking it woud perhaps raise new issues, and that would be interesting to > detect them beforehand. > > And indeed, pari doesn't compile! > > One of the files gives an assembler file which doesn't compile, but the > problem is optimization-dependent : > > (sage subshell) hecke:Olinux-armv7l jpuydt$ make > gcc -c -O3 -Wall -fno-strict-aliasing -fomit-frame-pointer -g > -funroll-loops -fPIC -I. -I../src/headers > -I/home/jpuydt/sage-4.8/local/include -o mp.o mp.c
Try running something like: gcc -c -S -O3 -Wall -fno-strict-aliasing -fomit-frame-pointer -g -funroll-loops -fPIC -I. -I../src/headers -I/home/jpuydt/sage-4.8/local/include -o mp.s mp.c and then look at the assembler generated in mp.s you can also s/-S/-E/; s/mp.s/mp.e/ or variant to reduce to, and create a self contained small test case and report upstream. If you want it "working now", you can try removing -funroll-loops > /tmp/ccgVJ73D.s: Assembler messages: > /tmp/ccgVJ73D.s:376: Error: branch out of range > /tmp/ccgVJ73D.s:5127: Error: branch out of range > make: *** [mp.o] Erreur 1 > SAGE_ROOT=/home/jpuydt/sage-4.8 > (sage subshell) hecke:Olinux-armv7l jpuydt$ gcc -c -O2 -Wall > -fno-strict-aliasing -fomit-frame-pointer -g -funroll-loops -fPIC -I. > -I../src/headers -I/home/jpuydt/sage-4.8/local/include -o mp.o mp.c > /tmp/ccMfUGHc.s: Assembler messages: > /tmp/ccMfUGHc.s:376: Error: branch out of range > /tmp/ccMfUGHc.s:5120: Error: branch out of range > SAGE_ROOT=/home/jpuydt/sage-4.8 > (sage subshell) hecke:Olinux-armv7l jpuydt$ gcc -c -O -Wall > -fno-strict-aliasing -fomit-frame-pointer -g -funroll-loops -fPIC -I. > -I../src/headers -I/home/jpuydt/sage-4.8/local/include -o mp.o mp.c > SAGE_ROOT=/home/jpuydt/sage-4.8 > > The gcc version is Ubuntu/Linaro 4.6.2-12ubuntu1. > > I'll try to investigate where the problem is (pari? gcc? other?), but I > thought sharing early would raise good suggestions. Hard to tell without looking at what is being generated, but I suspect something related to -mimplict-it=??? assembler option with the assembler generating extra code, and branch encoding for short jumps (8 or 11 bits). You can add -marm to CFLAGS and then it can only generate 24 bit displacement jumps... > Snark on #sagemath Paulo -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
