Gilles,
Yes I can. I tried a simple C code ("hello world") and it compiled
and ran correctly.Thanks! Jeff
Jeff, can you gcc -march=armv7-a foo.c Cheers, GillesOn Tuesday, June 9, 2015, Jeff Layton <layto...@att.net <mailto:layto...@att.net>> wrote:Gilles, I'm not cross-compiling - I'm building on the Pi 2. I'm not sure how to check if gcc can generate armv7 code. I'm using Raspbian and I'm just using the default compilers that come with it (I think it's gcc 4.6.3). Thanks! Jeff Jeff, dmb is available only on ARMv7 (Pi 2) if i remember correctly, you are building Open MPI on ARMv7 as well (Pi 2), so this is not a cross compilation issue. if you configure with -march=armv7, the relevant log is libtool: compile: gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I../../opal/include -I../../orte/include -I../../ompi/include -I../../oshmem/include -I../../opal/mca/hwloc/hwloc191/hwloc/include/private/autogen -I../../opal/mca/hwloc/hwloc191/hwloc/include/hwloc/autogen -I../.. -I/work/pi/src/openmpi-1.8.5/opal/mca/hwloc/hwloc191/hwloc/include -I/work/pi/src/openmpi-1.8.5/opal/mca/event/libevent2021/libevent -I/work/pi/src/openmpi-1.8.5/opal/mca/event/libevent2021/libevent/include -march=armv7 -MT atomic-asm.lo -MD -MP -MF .deps/atomic-asm.Tpo -c atomic-asm.S -fPIC -DPIC -o .libs/atomic-asm.o^M atomic-asm.S:1:0: error: target CPU does not support ARM mode which is very puzzling ... can you confirm 1) you are not cross compiling 2) your gcc can generate code for armv7 ? Cheers, Gilles On 6/9/2015 1:48 AM, Jeff Layton wrote: Jeff, Sorry - I was traveling for a week and didn't have to the RPi. What happens if you don't supply CCASFLAGS at all? The output from "make" is below. It died when it tried to compile atomic-local. It says the processor doesn't support ARM mode "dmb". Thanks! Jeff pi@raspberrypi /work/pi/src/openmpi-1.8.5 $ make Making all in config make[1]: Entering directory '/work/pi/src/openmpi-1.8.5/config' make[1]: Nothing to be done for 'all'. make[1]: Leaving directory '/work/pi/src/openmpi-1.8.5/config' Making all in contrib make[1]: Entering directory '/work/pi/src/openmpi-1.8.5/contrib' make[1]: Nothing to be done for 'all'. make[1]: Leaving directory '/work/pi/src/openmpi-1.8.5/contrib' Making all in opal make[1]: Entering directory '/work/pi/src/openmpi-1.8.5/opal' Making all in include make[2]: Entering directory '/work/pi/src/openmpi-1.8.5/opal/include' make all-am make[3]: Entering directory '/work/pi/src/openmpi-1.8.5/opal/include' make[3]: Leaving directory '/work/pi/src/openmpi-1.8.5/opal/include' make[2]: Leaving directory '/work/pi/src/openmpi-1.8.5/opal/include' Making all in asm make[2]: Entering directory '/work/pi/src/openmpi-1.8.5/opal/asm' CC asm.lo rm -f atomic-asm.S ln -s "../../opal/asm/generated/atomic-local.s" atomic-asm.S CPPAS atomic-asm.lo atomic-asm.S: Assembler messages: atomic-asm.S:7: Error: selected processor does not support ARM mode `dmb' atomic-asm.S:15: Error: selected processor does not support ARM mode `dmb' atomic-asm.S:23: Error: selected processor does not support ARM mode `dmb' atomic-asm.S:55: Error: selected processor does not support ARM mode `dmb' atomic-asm.S:70: Error: selected processor does not support ARM mode `dmb' atomic-asm.S:86: Error: selected processor does not support ARM mode `ldrexd r4,r5,[r0]' atomic-asm.S:91: Error: selected processor does not support ARM mode `strexd r1,r6,r7,[r0]' atomic-asm.S:107: Error: selected processor does not support ARM mode `ldrexd r4,r5,[r0]' atomic-asm.S:112: Error: selected processor does not support ARM mode `strexd r1,r6,r7,[r0]' atomic-asm.S:115: Error: selected processor does not support ARM mode `dmb' atomic-asm.S:130: Error: selected processor does not support ARM mode `ldrexd r4,r5,[r0]' atomic-asm.S:135: Error: selected processor does not support ARM mode `dmb' atomic-asm.S:136: Error: selected processor does not support ARM mode `strexd r1,r6,r7,[r0]' Makefile:1608: recipe for target 'atomic-asm.lo' failed make[2]: *** [atomic-asm.lo] Error 1 make[2]: Leaving directory '/work/pi/src/openmpi-1.8.5/opal/asm' Makefile:2149: recipe for target 'all-recursive' failed make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory '/work/pi/src/openmpi-1.8.5/opal' Makefile:1698: recipe for target 'all-recursive' failed make: *** [all-recursive] Error 1 _______________________________________________ users mailing list us...@open-mpi.org Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users Link to this post: http://www.open-mpi.org/community/lists/users/2015/06/27050.php _______________________________________________ users mailing list us...@open-mpi.org Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users Link to this post: http://www.open-mpi.org/community/lists/users/2015/06/27055.php _______________________________________________ users mailing list us...@open-mpi.org Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users Link to this post: http://www.open-mpi.org/community/lists/users/2015/06/27058.php _______________________________________________ users mailing list us...@open-mpi.org Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users Link to this post: http://www.open-mpi.org/community/lists/users/2015/06/27059.php
