Re: Cannot execute application on ARM target

["Williams Jr., Ernest L. via Tech-talk" <tech-talk@aps.anl.gov>]

On 1/12/19 6:57 PM, 刘佳 wrote:

-----原始邮件-----
发件人:"Williams Jr., Ernest L." <ernesto@slac.stanford.edu>
发送时间:2019-01-11 23:52:15 (星期五)
收件人: "刘佳" <liujia@ihep.ac.cn>
抄送: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
主题: Re: Cannot execute application on ARM target

Yes, I built the IOC application via the EPICS templates:

    makeBaseApp.pl -t example armexample

    makeBaseApp.pl -i -t example armexample ( the architechture choose linux-arm, and the application name is armexample)

Okay, that is good.

I didn't change any configuration of the application, and then MAKE is no error. So I copy the <appTop> to the target.

In this step, I need more information:

What type of linux distro are running on your target?

What file system are you using?

Does you target do an nfs mount anywhere?

when I try to start the application on the target,   ../../bin/linux-arm/armexample st.cmd,    the Error is: 

-bash: ../../bin/linux-arm/armexample: No such file or directory 

and then I change to the <appTop>/bin/linux-arm/, chmod +x armexample, and ./armexample, the Error is:

-bash: ./armexample: No such file or directory 

I didn't known what to do next, please give some advices, thanks a lot!

In theory, this should be working.

After you copy the <appTop> to your target file system, please do a pwd().

I would like to see the path on your target.

In general, I think we could help you troubleshoot this more efficiently if you

list all the commands you type in your console.

Cheers,

Ernesto

Jia LIU

---

From: tech-talk-bounces@aps.anl.gov <tech-talk-bounces@aps.anl.gov> on behalf of 刘佳 via Tech-talk <tech-talk@aps.anl.gov>
Sent: Thursday, January 10, 2019 6:59 PM
To: tech-talk@aps.anl.gov
Subject: Cannot execute application on ARM target

 

Hi,
I am trying to build EPICS application on ARM target, and the cross compiling on host have no error,
but the IOC on the target cannot execute:
    -bash: ./armexample: No such file or directory 

============================================================================================

[Ernest]:

If you are building  your IOC application via the EPICS Templates, then executable is found here by default:

<TOP>/bin/<T_A>/armexample

For example, I built and application called "Jupiter" for a linux target:

<TOP>/bin/rhel6-x86_64/Jupiter

Please provide more information such as did you first create a skeleton for you app with:

makeBaseApp.pl -t example
============================================================================================

########################################################
my configuration as following:
    HOST: Ubuntu 14.04 (on VMware)
    TARGET: Exynos4412
    BASE: base-3.14.12.5
    GCC: arm-none-linux-gnueabi-gcc-4.4.1

the cross compiling configuration is:   
    configure/CONFIG_SITE:
        CROSS_COMPILER_TARGET_ARCHS=linux-arm
        CROSS_COMPILER_HOST_ARCHS=linux-x86
        SHARED_LIBRARIES=NO
        STATIC_BUILD=YES
    configure/os/CONFIG_SITE.Common.linux-arm:
        #COMMANDLINE_LIBRARY = READLINE
    configure/os/CONFIG_SITE.linux-x86.linux-arm:
        GNU_DIR = /opt/armtoolchain/arm-2009q3
        GNU_TARGET = arm-none-linux-gnueabi
########################################################

the .bashrc configuration is:
    export EPICS_HOST_ARCH=linux-x86 
    export EPICS_BASE=/home/control/epics/base-3.14.12.5
    export LD_LIBRARY_PATH=/opt/armtoolchain/arm-2009q3/lib:$EPICS_BASE/lib/linux-arm

I am still getting the error message on target, Please solve my above query. 

Thanks 
Jia LIU