"Illegal instruction" on MIPS architecture

[82kg]

Output of rclone version

V1.44

Describe the issue

device: Thunder Timecloud
cpu: MT 7621AT
linux core version:4.4.153
system: LEDE Reboot 17.01.6 r3979-2252731af4 / LuCI lede-17.01 branch (git-18.201.27126-7bf0367)

i download the rclone-v1.44-linux-mipsle .
i runs well on linux core version:3.14 and system : LEDE14.07
today i update the system. and the linux core updated to 4.4.153

when i sun the script ./rclone config

it returns "Illegal instruction"

how can i solve the problem

[Cnly]

I found a post highly relevant on the forum. And we have #2724. @ncw maybe we should test the PR and then merge it?

@tony-sunjian I plan to build the binaries for that PR now and should be able to put them here in a while. Can you help with the testing?

[82kg]

@Cnly no problem, do you need the ssh? or what should i do

[Cnly]

rclone-v1.44-037-g148b0de7-beta-linux-mipsle.zip

@tony-sunjian Can you have a try with this version? Thanks.

[82kg]

@Cnly still returns "Illegal instruction", i can send you the ssh account,

[82kg]

@Cnly or e-mail what ever

[82kg]

rclone-v1.44-037-g148b0de7-beta-linux-mipsle.zip

@tony-sunjian Can you have a try with this version? Thanks.

my email : 717114806@qq.com

[Cnly]

@tony-sunjian I checked the config again and it seems the arch name is not correct in the PR. This version should work:

rclone-v1.44-037-g148b0de7-beta-linux-mipsle.zip

But if you want to send me something like credentials, that's okay too and you can reach me at minecnly@gmail.com. I may not be able to do remote tests right away, though.

[82kg]

@Cnly i have already send you ssh account , you may try it

[82kg]

@tony-sunjian I checked the config again and it seems the arch name is not correct in the PR. This version should work:

rclone-v1.44-037-g148b0de7-beta-linux-mipsle.zip

But if you want to send me something like credentials, that's okay too and you can reach me at minecnly@gmail.com. I may not be able to do remote tests right away, though.

sorry, still returns "Illegal instruction"

[sedlund]

@Cnly you will have to build with:
GOARCH=mipsle GOMIPS=softfloat go build -a -ldflags '-s -w'

If you have a previous build and then change GOMIPS=softfloat, you have to pass -a to go build to force rebuild of everything

[82kg]

@Cnly you will have to build with:
GOARCH=mipsle GOMIPS=softfloat go build -a

If you have a previous build and then change GOMIPS=softfloat, you have to pass -a to go build to force rebuild of everything

hi @sedlund
do MT7621AT has hardware FPU?
rclone v1.43 runs well on MT7621AT with linux core:3.14。

[sedlund]

@tony-sunjian
No, it does not have FPU.

OpenWRT had the kernel configured to enable FPU emulation with kernel 3.14 which is why it worked. When they switched to the 4.x kernel code base the kernel defaults to not enable FPU emulation - I think they just forgot to enable it - as they still build and ship packages (nodejs and others) that require FPU to work.

[82kg]

@tony-sunjian
No, it does not have FPU.

OpenWRT had the kernel configured to enable FPU emulation with kernel 3.14 which is why it worked. When they switched to the 4.x kernel code base the kernel defaults to not enable FPU emulation - I think they just forgot to enable it - as they still build and ship packages (nodejs and others) that require FPU to work.

i'v already send a bug report to openwrt
https://bugs.openwrt.org/index.php?do=details&task_id=1929

i got a reply, （Functionality is intentionally disabled）😀

the following link explains why
https://bugs.openwrt.org/index.php?do=details&task_id=1390&string=fpu&advancedsearch=on&search_name=&type%5B0%5D=&sev%5B0%5D=&pri%5B0%5D=&due%5B0%5D=&reported%5B0%5D=&cat%5B0%5D=&status%5B0%5D=closed&percent%5B0%5D=&opened=&dev=&closed=&duedatefrom=&duedateto=&changedfrom=&changedto=&openedfrom=&openedto=&closedfrom=&closedto=

[Cnly]

@sedlund thanks for the tip! It seems I've made the same mistake as the one in that forum post! :P

I tried with a clean build of the PR on @tony-sunjian your device and it runs with no error. Thanks for your help! Version output:

rclone v1.44-042-g4a6cfbeb-patch-1-beta
- os/arch: linux/mipsle
- go version: go1.11.2

[82kg]

@sedlund thanks for the tip! It seems I've made the same mistake as the one in that forum post! :P

I tried with a clean build of the PR on @tony-sunjian your device and it runs with no error. Thanks for your help! Version output:

rclone v1.44-042-g4a6cfbeb-patch-1-beta
- os/arch: linux/mipsle
- go version: go1.11.2

thanks a lot, i seen the rclone.new file , it runs well! perfect!

[ncw]

I've merged @sedlund 's PR to enable softfloat now - thank you!

This will be in the latest beta in 15-30 mins and release in v1.45.