On a new Raspberry Pi 3, running Raspbian, all apt-get package updates loaded, I'm encountering an error compiling gnuradio (branch: master). I made one modification from the default source code, and that is the neonasm patch to fix a different compile error with a missing instruction on the Pi.
Has anybody encountered the ARM mode error mentioned below or know what I can do to push past it?
$ git diff HEAD~1
diff --git a/kernels/volk/asm/neon/volk_32f_x2_dot_prod_32f_a_neonasm_opts.s b/kernels/volk/asm/neon/volk_32f_x2_dot_prod_32f_a_neonasm_opts.s
index e4002b8..37dcd75 100644
--- a/kernels/volk/asm/neon/volk_32f_x2_dot_prod_32f_a_neonasm_opts.s
+++ b/kernels/volk/asm/neon/volk_32f_x2_dot_prod_32f_a_neonasm_opts.s
@@ -43,7 +43,12 @@ volk_32f_x2_dot_prod_32f_a_neonasm_opts:
vadd.f32 s15, s15, s13
vadd.f32 s15, s15, s14
bls .done @ if vector is multiple of 16 then finish
- sbfx r11, r1, #2, #1 @ check alignment
+@ BH
https://lists.gnu.org/archive/html/discuss-gnuradio/2016-01/msg00234.html address@hidden sbfx r11, r1, #2, #1 @ check alignment
+ mov r11,#0
+ tst r1,#4
+ movne r11,#15
+# BH END OF PATCH
rsb r9, r8, r3
and r11, r11, #3
mov r6, r1
$ cat /etc/debian_version
8.0
$ uname -a
Linux redwave 4.9.35-v7+ #1014 SMP Fri Jun 30 14:47:43 BST 2017 armv7l GNU/Linux
$ gnuradio branch: master (82d0a6b)
* 82d0a6b -(4 weeks ago) gr-newmod: Pylint fixes in python scripts . Swapnil Negi (HEAD, origin/master, origin/HEAD, master)
Error output follows:
[ 0%] Building C object volk/lib/CMakeFiles/volk_obj.dir/volk_machine_neon_hardfp_orc.c.o
In file included from /home/pi/gr/gnuradio/build/volk/lib/volk_machine_neon_hardfp_orc.c:130:0:
/home/pi/gr/gnuradio/volk/kernels/volk/volk_32fc_s32fc_multiply_32fc.h: In function ‘volk_32fc_s32fc_multiply_32fc_neon’:
/home/pi/gr/gnuradio/volk/kernels/volk/volk_32fc_s32fc_multiply_32fc.h:282:16: warning: unused variable ‘cPtr’ [-Wunused-variable]
lv_32fc_t* cPtr = cVector;
^
/tmp/ccWuy8Qj.s: Assembler messages:
/tmp/ccWuy8Qj.s:7707: Error: selected processor does not support ARM mode `rbit r4,r4'
/tmp/ccWuy8Qj.s:7718: Error: selected processor does not support ARM mode `rbit r4,r4'
/tmp/ccWuy8Qj.s:7725: Error: selected processor does not support ARM mode `rbit r4,r4'
/tmp/ccWuy8Qj.s:7732: Error: selected processor does not support ARM mode `rbit r4,r4'
/tmp/ccWuy8Qj.s:7740: Error: selected processor does not support ARM mode `rbit r4,r4'
/tmp/ccWuy8Qj.s:7747: Error: selected processor does not support ARM mode `rbit r4,r4'
/tmp/ccWuy8Qj.s:7754: Error: selected processor does not support ARM mode `rbit r4,r4'
/tmp/ccWuy8Qj.s:7761: Error: selected processor does not support ARM mode `rbit r4,r4'
/tmp/ccWuy8Qj.s:7789: Error: selected processor does not support ARM mode `rbit ip,ip'
volk/lib/CMakeFiles/volk_obj.dir/build.make:2572: recipe for target 'volk/lib/CMakeFiles/volk_obj.dir/volk_machine_neon_hardfp_orc.c.o' failed
make[2]: *** [volk/lib/CMakeFiles/volk_obj.dir/volk_machine_neon_hardfp_orc.c.o] Error 1
CMakeFiles/Makefile2:178: recipe for target 'volk/lib/CMakeFiles/volk_obj.dir/all' failed
make[1]: *** [volk/lib/CMakeFiles/volk_obj.dir/all] Error 2
Makefile:160: recipe for target 'all' failed
make: *** [all] Error 2