Problem compiling wallet on ARM

[Kokum]

Hi,

i am trying to compile latest wallet on ubuntu 18.04 on ARM platform but getting error like below. Can you help, please? Thanks.

In file included from tor/orconfig.h:13:0,
                 from tor/backtrace.c:16:
tor/backtrace.c: In function 'clean_backtrace':
tor/orconfig_linux.h:578:37: error: 'mcontext_t {aka const struct <anonymous>}' has no member named 'gregs'
 #define PC_FROM_UCONTEXT uc_mcontext.gregs[REG_RIP]
                                     ^
tor/backtrace.c:88:27: note: in expansion of macro 'PC_FROM_UCONTEXT'
   stack[n] = (void*) ctx->PC_FROM_UCONTEXT;
                           ^~~~~~~~~~~~~~~~
tor/orconfig_linux.h:578:44: error: 'REG_RIP' undeclared (first use in this function); did you mean 'REG_R15'?
 #define PC_FROM_UCONTEXT uc_mcontext.gregs[REG_RIP]
                                            ^
tor/backtrace.c:88:27: note: in expansion of macro 'PC_FROM_UCONTEXT'
   stack[n] = (void*) ctx->PC_FROM_UCONTEXT;
                           ^~~~~~~~~~~~~~~~
tor/orconfig_linux.h:578:44: note: each undeclared identifier is reported only once for each function it appears in
 #define PC_FROM_UCONTEXT uc_mcontext.gregs[REG_RIP]
                                            ^
tor/backtrace.c:88:27: note: in expansion of macro 'PC_FROM_UCONTEXT'
   stack[n] = (void*) ctx->PC_FROM_UCONTEXT;
                           ^~~~~~~~~~~~~~~~
makefile.unix:458: recipe for target 'obj/backtrace.o' failed
make: *** [obj/backtrace.o] Error 1

[Kokum]

Hi, I was able to compile the wallet (daemon - denariusd) I had to use makefile.arm instead of makefile.unix.  However, another problem arose - the wallet does not sync. I am trying to download the last chaindata from https://pos.watch/chaindata.zip but after start denariusd it do not get new blocks but stay at 2667869 Instead there are errors:

ProcessMessages(ping, 8 bytes) : Exception 'CDataStream::read() : end of data: iostream error' caught, normally caused by a message being shorter than its stated length
ProcessMessage(ping, 8 bytes) FAILED
ERROR: CheckProofOfStake() : INFO: read txPrev failed
WARNING: AcceptBlock(): check proof-of-stake failed for block e4888052fe3768e83389654f56990f7aa7f8076b4f7f132e465cf971798e8eca
ERROR: ProcessBlock() : AcceptBlock FAILED
ERROR: FetchInputs() : 225ef5b75d mempool Tx prev not found 3de53cd669

and many ORPHANs:

ProcessBlock: ORPHAN BLOCK, prev=0000000000186ef85ab2
ERROR: ProcessBlock() : already have block (orphan) 0000000000179db13774
ProcessBlock: ORPHAN BLOCK, prev=6d3bdd0dcf999bc64882
ERROR: ProcessBlock() : already have block (orphan) 024efe77cb8538559247
ProcessBlock: ORPHAN BLOCK, prev=a89d8af759325f8412dc
ERROR: ProcessBlock() : already have block (orphan) 00000000001cf2ae2380
ProcessBlock: ORPHAN BLOCK, prev=6e70ef0fd2ceb20cdef7
ERROR: ProcessBlock() : already have block (orphan) 41e8f7dd14b9daaba330
ProcessBlock: ORPHAN BLOCK, prev=8f20ac4f7e1b82ea1c1c
ERROR: ProcessBlock() : already have block (orphan) 00000000001aa9bd4a30
 

[buzzkillb]

For some reason AMD64 and ARM chaindata's are not compatible. So I split them up here.

https://chaindata.pos.watch/

[Kokum]

Hi buzzkillb,

unfortunatelly new pichaindata.zip did not help. It still not getting new blocks and plenty of errors and orphans. It is ARMv8-A - Rockchip RK3399.

[buzzkillb]

Try compiling latest v3.3.9.7 branch. Syncing from block 0 might be fast enough where it will take a day or 2 on ARM now. Otherwise I found using chaindata and restarting the wallet a few times to get past the orphans works.

[Kokum]

Unfortunately nothing helps. When using chaindata I've restarted the daemon a dozen times and it didn't help. When I tried to sync from the beginning on v3.3.9.7 it always stops on block 1429. Please see attached screen. 

[Ghost]

On 1/29/2020 at 6:47 AM, Kokum said:

Unfortunately nothing helps. When using chaindata I've restarted the daemon a dozen times and it didn't help. When I tried to sync from the beginning on v3.3.9.7 it always stops on block 1429. Please see attached screen. 

Try using the chaindata from https://denarii.cloud (There is one specifically for ARM powered devices) you extract that into your Denarius data directory (usually ~/.denarius/ on Linux if not using Snapcraft)

[buzzkillb]

Yes the chaindata will work as I tried this about a week ago on an ARM setup, raspberry pi4 4gb. Now that more people are on latest wallet the sync is fast again. Please try again.